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+0300055EN MPXPRO User Manual

1. Setting Function Duration al Value on display flashing Set point Temperature set point A T Set value a Save set point and return to standard display a parameters me Prg 5s The first type F parameter is displayed Prg Set 5 s Access the parameters program SR ing level i at ming level pace ace A B v Enter password 22 for configuration level and 33 for advanced level Confirm the password the first type C or A parameter is displayed a from the livello program 2 5s The chang s are saved Local defrost 5s dFb activate defrost dFE deactivate defrost Defrost ll defrost Master K amp T 5s dFb activate defrost dFE deactivate defrost Continuous cycle a 55 ccb activate continuous cycle see paragraph 6 6 Auxiliary functions amp ccE deactivate continuous cycle AUX output a Activate deactivate auxiliary output Prg Set 56 Copy parameters from A a Network functions only for Master to Slave wA Enter password default 66 Mast aster al See paragraph 3 6 Copy parameters from Master to Slave Display network unit status Prg set a Select Slave see paragraph 3 5 Display Slave controller status from from Master j amp amp LY Master terminal Set the default parame
2. Par Description Pag Def Min Max UoM Type Icon c7 Defrost priority over continuous cycle 0 no 1 yes 47 0 0 1 A gt dEF defrost do Type of defrost 36 0 0 6 C ed 0 heater by temperature 4 heater by time with temp control 1 hot gas by temperature 5 multiplexed hot gas by temperature 2 heater by time 6 multiplexed hot gas by time 3 hot gas by time d2 End defrost synchronized by Master 48 1 0 1 E A a 0 not synchronized 1 synchronized dl Maximum interval between consecutive defrosts 38 8 0 240 hour G 3i dt1 End defrost temperature read by Sd 49 8 50 0 50 0 C F F x dt2 End defrost temperature read by Sd2 49 8 50 0 50 0 C F A dP1 Maximum defrost duration 36 49 45 1 240 min F ao dP2 Maximum secondary evaporator defrost duration 36 49 45 1 240 min A a d4 Defrost on power up 48 0 0 1 A x 0 disabled 1 enabled Master network defrost Slave local defrost d5 Defrost delay on power up if d4 1 48 0 0 240 min A a 0 delay disabled d6 Display on terminals during defrost 36 1 0 2 C a 0 temperature alternating with dEF 1 freeze display 2 dEF dd Dripping time after defrost fans off 39 48 2 0 15 min A eg 0 no dripping d7 Skip defrost 49 0 0 A se 0 disabled 1 enabled
3. Displa a Alarm Evaporator Continuous Signalled on Network Pay Cause of the alarm flash on Buzzer Reset Compressor Defrost P g solenoid code relay fans cycle tLAN display valve rE Control probe fault A A ON ON automatic duty unchanged unchanged unchanged V setting c4 F f BE 5 i duty p E1 Probe S1 fau A A OF automatic setting c4 unchanged unchanged unchanged V E2 Probe S2 fau A A FF OFF automatic unchanged unchanged unchanged unchanged V E3 Probe S3 fau UN OFF OFF automatic unchanged unchanged unchanged unchanged V E Probe S4 fau A A OFF OFF automatic unchanged unchanged unchanged unchanged V E5 Probe S5 fau A A OFF OFF automatic unchanged unchanged unchanged unchanged V E6 Probe S6 fau UN OFF OFF automatic unchanged unchanged unchanged unchanged V E7 Probe S7 fau UN OFF OFF automatic unchanged unchanged unchanged unchanged V F i DE G i duty fe 8 Serial probe S8 not updated YN Ol OF automatic setting c4 unchanged unchanged unchanged V E9 Serial probe S9 not updated A A OFF OFF automatic duty unchanged unchanged unchanged V setting c4 m E P duty _ E10 Serial probe S10 not updated A A O OF automatic s ting unchanged unchanged unchanged V E11 Serial probe S11 not updated vA OFF OFF automatic duty unchanged unchanged unchanged V setting c4 LO Low temperature alarm A O O a
4. P5 Type of probe group 5 serial probes S8 to 11 41 0 0 15 A FA Assign outlet temperature probe Sm 30 1 0 11 Cc A 0 Function disabled 6 Probe S6 1 Probe S1 7 Probe S7 2 Probe S2 8 Serial probe S8 3 Probe 3 9 Serial probe S9 4 Probe 54 10 Serial probe 10 5 Probe S5 11 Serial probe 11 Fb Assign defrost temperature probe Sd See FA 30 2 0 11 E A Fc Assign intake temperature probe Sr See FA 30 3 0 11 C A Fd Assign superheated gas temperature probe tGS See FA 27 41 0 0 11 A A FE Assign saturated evaporation pressure temperature probe PEu tEu See FA 27 41 0 0 11 z A A A FF Assign defrost temperature probe 2 Sd2 See FA 41 0 0 11 A A 57 MPXPRO 0300055EN rel 1 3 07 03 13 O gt A m Par Description Pag Def Min Max UoM Type Icon FG Assign auxiliary temperature probe 1 Saux1 See FA 41 0 0 11 A A A FH Assign auxiliary temperature probe 2 Saux2 See FA 41 0 0 11 A A FI Assign ambient temperature probe SA See FA Al 0 0 11 A A FL Assign ambient humidity probe SU See FA Al 0 0 11 A A FM Assign glass temperature probe Svt See FA
5. Par Description Def Min Max UoM tdlto8 _ Defrost 1 to 8 press Set d_ Defrost 1 to 8 day 0 0 1 day h_ Defrost 1 to 8 hour 0 0 23 hour n Defrost 1 to 8 minute 0 0 59 min P_ Defrost 1 to 8 power defrost activation 0 0 1 Tab 5 r MPXPRO can manage the following types of defrost depending on the setting of parameter dO 1 heater located near the evaporator 2 hot gas 3 multiplexed hot gas The defrost can end by temperature in which case the defrost probe Sd must be installed or by time In the first case the defrost ends when the defrost probe Sd exceeds the end defrost value dt1 or the time dP1 has elapsed in the second case when the defrost phase exceeds the maximum time dP1 At the end of the defrost the dripping phase may begin if dd gt 0 during which the compressor and the fans are off followed by the post dripping phase if Fd gt 0 during control resumes with the fans off See the chapter on Advanced functions MPXPRO 0300055EN rel 1 3 07 03 13 36 CAREL The type of display on user terminal and the remote display during the defrost can be selected by setting parameter d6 Par Description Def Min Max UoM dti End defrost temperature read by Sd 8 50 0 50 0 C F dP1 Maximum defrost duration 45 1 240 min do Type of defrost 0 0 6 0 heater by temperature 1 hot gas by temperature 2 heater
6. HOT GAS line LIQUID line Key SSu EEV CMP SV Suction valve Fig 5 n ESu Equalizing valve Evaporation pressure PEu HSGV1 to4 Hot gas valves Electronic expansion valve P Compressor Fan forced evaporator T Solenoid valve SV Superheated gas temp tGS Solenoid valve MPXPRO 0300055EN rel 1 3 07 03 13 Note For hot gas defrosts in every Master Slave network depending on parameter dHG the equalizing valve may be closed or open e local defrosts are not possible the hot gas valve is always and only local one for each controller e the liquid solenoid valve may be local or network e the suction and equalizing valve may be local or network the end of a hot gas defrost must be synchronized e the change from one phase to the next is always synchronized between all controllers e the durations of the various phases are controlled by the parameters set on the Master the corresponding parameters on the Slaves are not considered The defrost starts by setting the event and the start mode with a maximum of 8 defrosts each day parameters td1 to td8 The real time clock RTC must be available meaning this is always possible on the Master which then sends the synchronized requests to the Slaves If independent programming is required on the Slaves these must also be installed with RTC cards e from the supervisor which sends t
7. Par Description Def Min Max UoM ro Control offset with probe error 0 0 0 0 20 CEE Tab 6 r MPXPRO in standard mode uses the virtual probe Sv for control that is the weighted average of the outlet and intake probe see parameter 4 If one of the two probes making up the virtual probe is broken or has an error parameter ro is used to continue normal control in controlled conditions without the need for immediate intervention by maintenance personnel The recommended value of ro is the temperature difference between the outlet probe and intake probe reading in steady operating conditions of the refrigeration unit ro Sr Sm If ro 0 the function is not active The following cases may occur outlet probe Sm error MPXPRO starts control based on the intake probe Sr alone considering a new set point St determined by the formula 100 4 100 St St ro intake probe Sr error MPXPRO starts control based on the outlet probe Sm alone considering a new set point St determined by the formula 4 100 If night time operation has been set with the intake probe as the control probe the controller considers 4 100 and uses the outlet probe The new set point becomes St St roe St St ro Note if ro 0 the function is not active for night time operation the new set point is added to the value defined by r4 automatic night time set point variation in the event
8. activated and the temperature alarms are enabled with the delay Ad Par Description Def Min Max UoM d8 Bypass high temperature alarm time after 30 1 240 min defrost and door open Tab 5 g 6 Remote ON OFF When the controller is OFF e the display shows the value measured by the probes set parameter t1 alternating with the message OFF e the auxiliary relays set as AUX and light remain active while the other auxiliary outputs are deactivated e the buzzer and alarm relay are deactivated the following are not performed control defrosts continuous cycle emperature alarm signals the compressor protection times are observed e switching ON from the keypad supervisor or remote control is ignored When the controller is ON again all the functions are reactivated except for the defrost on start up and compressor and evaporator fan delay on power up parameter c0 Note if more than one input is configured as the remote ON OFF the off status of one any of these determines the off status of the device e the FF control from digital input has priority over the keypad and the supervisor if the controller remains OFF for longer than the value set for basic parameter dl when the controller is switched back on a defrost is performed 7 Curtain switch light During night status the night time set point Stn is used for control calculated based on the set point St plus th
9. protection function and is automatically reset as soon as the saturated temperature falls below the threshold Par Description Def Min Max UoM PM1 MOP saturated evaporation temperature 50 0 50 0 50 0 C F threshold PM2 MOP integration time 10 0 0 0 240 0 S PM3 MOP alarm delay 0 0 999 s 0 function disabled PM4 MOP function delay when starting 2 0 240 S control PM5 MOP enable close solenoid valve 0 0 1 7 optional Tab 6 ay Fig 6 v Key T_EVAP Evaporation temperature PM1 MOP threshold MOP MOP protection PM3 Alarm delay ALARM Alarm t Time PM1 represents the maximum evaporation pressure expressed in degrees saturated above which the MOP protection and alarm are activated each with its own delay times There is a gradual return to normal operation to avoid the critical situations arising again PM2 represents the integration time for the maximum evaporation pressure protection function This replaces the normal PID control during MOP status PM2 0 gt MOP protection and alarm disabled PM3 represents the alarm activation delay after exceeding the MOP threshold When the alarm is activated the following occur e Message MOP shown on the display The buzzer is activated The alarm features automatic reset when the evaporation pressure falls below the threshold PM1 PM4 0 gt MOP alarm disabled PM4 represents the activation delay MOP protection after the
10. paragraph 6 10 The parameter that the control of the electronic valve is based on is Par Description Def Min Max UoM the superheat which effectively tells whether or not there is liquid at P7 __ LowSH low superheat threshold 70 10 0 P3 K the end of the evaporator The superheat temperature is calculated as Tab 5 2 the difference between superheated gas temperature measured by a temperature sensor located at the end of the evaporator and the saturated evaporation temperature calculated based on the reading of a pressure transducer located at the end of the evaporator and using the Tsat P conversion curve for each refrigerant Superheat Superheated gas temperature Saturated evaporation emperature f the superheat temperature is high it means that the evaporation process is completed well before the end of the evaporator and therefore flow rate of refrigerant through the valve is insufficient This causes a reduction in cooling efficiency due to the failure to exploit part of the evaporator The valve must therefore be opened further Vice versa if he superheat temperature is low it means that the evaporation process has not concluded at the end of the evaporator and a certain quantity of liquid will still be present at the inlet to the compressor The valve must therefore be closed further The operating range of the superheat emperature is limited at the lower end if the flow rate through the valve is ex
11. The remote control is used for programming and commissioning the E MPXPRO See the chapter on User interface Fig 1 0 Programming key MXOPZKEYAO IROPZKEYAO Fitted with interchangeable connectors the MXOPZKEYAO programming key for MPXPRO is used to copy the complete set of parameters storing up to six different control parameter configurations Below is the table of compatibility with MPXPRO firmware versions Fig 1 r Fig 1 p Sroarannminaike MPXPRO firmware Sets of parameters g g Key version available MXOPZKEYAO gt 2 1 6 IROPZKEYAO lt 12 2 Tab 1 c MPXPRO 0300055EN rel 1 3 07 03 13 10 CAREL 2 INSTALLATION 2 1 MPXPRO DIN rail assembly and MPXPRO optional connections dimensions 137 y IMN 109 i Fig 2 d Fig 2 a 1 Press the cover to remove it Fig 2 e 2 Plug the MXOPZKEYAO IROPZKEYAO key into the connector provided Note for models with firmware version lt 1 2 only use the To remove the cover IROPZKEYAO key 1 press the sides 2 remove the cover Fig 2 c To remove the covers 1 press the sides of the cover at the points of coupling 2 remove the cover 11 MPXPRO 0300055EN rel 1 3 07 03 13 CAREL 2 2 Mainboard description of the terminals Note before performing any operations on the control board disconnect the main power supply by turning the main switch in Below is the wiri
12. slave 1 slave 2 slave 3 slave 4 slave 5 tLAN 3 tLAN 3 tLAN 3 tLAN 3 tLAN 3 gaa 5EB GE SBE gag Fig 2 1 For the electrical connections see the general connection diagram in par 28 4 RS485 supervisor network The maximum number of Master controllers that can be connected in the network also depends on the number of Slaves connected to each Master the maximum total is 199 controllers CAREL and Modbus protocol 1 8 amp IG te master n TI master 1 master 2 Fig 2 m For the electrical connections see the general connection diagram in par 28 2 7 Connecting the MCHRTF module The connection of the MCHRTF single phase speed controller for evaporator fans requires a resistor in series as shown in the following figure 230 Vac 50 Hz N LOAD MCHRF module Fig 2 n 2 8 General connection diagram Power Supply AC 115 230 V N oT 200 mA max L Warning Before making any operation on 1 I the control board turn off the supply mains I turning off the main switch of the electrical panel I l al L A The contemporary operation of both outputs is not granted with any actuator Please refer to the technical features Bon 20 mA max totally F gt S
13. FULL MX30S21HOO Slave 5 8A 2HP 16A 8A 8A l YES YES YES YES Y l l MX30S31HOO Slave 3 8A 0 16A 0 8A l YES YES YES YES Y FULL EV MX30M25HOO Master 5 8A 2HP 16A 8A 8A Y __ YES YES YES YES y Y NO MX30S25HOO Slave 5 8A 2HP 16A 8A 8A l YES YES YES YES Y Y NO FULL PW MX30M24HOO Master 5 8A 2HP 16A 8A 8A Y __ YES YES YES YES y l Y NO MX30S24HOO Slave 5 8A 2HP 16A 8A 8A YES YES YES YES Y Y NO Tab 1 b Y fitted can be fitted 1 full optional board with 2 PWM outputs 12 Vdc max 20 mA The Master controllers have the clock RTC and the RS485 interface already driver board not pre installed possibility to connect as desired NTC fitted the Slave controllers can become Masters by fitting the MX30P48500 card PTC PT1000 NTC L243 probes 0 to 5 Vdc ratiometric probes 0 to 10 accessory and setting a parameter In A Master controller can become a Slave controller by simply setting the parameter In The code identifies the type of controller and outputs the fifth letter M or S represents a Master or Slave controller respectively the seventh letter 0 main board driver board not pre installed NTC and 0 to 5 Vdc ratiometric probe only Vdc or 4 to 20 mA active probes 4 full optional board with 2 PWM outputs 12 Vdc max 20 mA PWM driver board pre installed and including the 0 to 10 Vdc output all types of probes can be connected
14. Master Slave 1 2 3 4 5 Master Slave 1 2 3 4 5 A9 1 A8 7 A9 0 A8 8 A8 0 A8 8 A4 7 Light sensor threshold parameter H12 Digital inputs DI DI2 DI3 DI4 not DI5 can be connected to the light sensor code PSOPZLHT00 setting one of the parameters A4 A5 A10 A11 9 H12 represents the threshold for night day switching There is a fixed hysteresis A of around 10 lux for day night switching Par Description Def Min Max UoM H12___ Light sensor threshold 25 10 100 lux day night light lux H12 Fig 6 a 6 3 Analogue outputs As mentioned the most complete version of MPXPRO features 2 PWM outputs used as the control signal to manage loads such as anti sweat heaters or modulating evaporator fans for demisting the display cases Anti sweat heater or fan modulation The control of anti sweat heaters is performed by comparing dewpoint calculated based on the ambient temperature and humidity and the temperature of the display case glass measured by a probe or estimated using the outlet intake and ambient temperature of the display case MPXPRO features two types of anti sweat heater control e PI proportional integral e fixed activation manual control The conditions for the activation of the algorithms are as follows Algorithm Activation condition Pl rHd gt 0 fixed activation manual control rHd 0 rHt gt 0 Tab 6 If the temperature read by the glass t
15. F1 Frd FAN Fig 5 p Key Sd Evaporator probe Frd Differential Sv Virtual probe t Time F1 Fan activation threshold FAN Evaporator fans The fan can be turned off in the following situations when the compressor is off parameter F2 during the defrost parameter F3 During the dripping period parameter dd gt 0 and the post dripping period parameter Fd gt 0 the evaporator fans are always off This is useful to allow the evaporator to return to temperature after defrosting thus avoiding blowing warm hot and moist air into the refrigerated environment The evaporator fans can be forced on during control parameter F2 and during defrost parameter F3 Par Description Def Min Max UoM F2 Evaporator fans with compressor off 1 0 1 0 see FO 1 always off F3 Evaporator fans during defrost 1 0 1 0 on 1 off dd Dripping time after defrost fans off 2 0 15 min 0 no dripping Fd Post dripping time after defrost fans 1 0 15 min off with control active Tab 5 w Variable speed fans The installation of variable speed fans may be useful in optimising energy consumption In this case the fans are powered by the mains while the control signal may come from output PWM2 on the main board a0to 10 Vdc output on the driver board The maximum and minimum fan speed can be set using advanced parameters F6 and F7 If using the fan speed controller F5 repre
16. e Built in switching power supply for stepper valve option external transformer no longer required Valve cable length extended to max 50m Smooth Lines function from version 3 2 to modulate evaporator capacity based on actual cooling demand Models he LIGHT version is supplied without the plastic side cover it is not possible to install the driver board for expansion valves and it is available only in multiple packages without connector kit The following table shows the models and the main features also see paragraph 10 2 1 1 Light Version Display and master slave network cable length extended to max100 m advanced superheat control with protection for low superheat LowSH low evaporation temperature LOP high evaporation temperature MOP low suction temperature LSA defrost activated from the keypad digital input network control from Master supervisor management of various types of defrost on one or two evaporators heater natural stop compressor hot gas smart defrost functions coordinated network defrosts light and showcase curtain management anti sweat heater modulation evaporator fan speed modulation remote control accessory for commissioning and programming VPM program Visual Parameter Manager installed on a personal computer for managing parameters and testing the controller possibility to display and set the Slave parameters from the Master propagation of digital inpu
17. unchanged unchanged unchanged V EE Flash unit parameter error A A OFF OFF automatic OFF not performed OFF not performed V 5 EF F operaning Parameter A OFF OFF automatic OFF not performed OFF not performed V HA Type HA HACCP alarm HACCP OFF OFF manual unchanged unchanged unchanged unchanged V HF Type HF HACCP alarm HACCP OFF OFF manual unchanged unchanged unchanged unchanged V Communication error with MA Master only on Slave A A ON ON automatic unchanged unchanged unchanged unchanged Communication error with ul u5 Slave only on Master A A ON ON automatic unchanged unchanged unchanged unchanged z n1 n5 ae unit to sinthe A ON ON automatic unchanged unchanged unchanged unchanged up1 up5 Upload procedure with erors A OFF OFF unchanged unchanged unchanged unchanged gt 2 on unit 1 to5 Displayed probe wrong or N z 205 disconnected A OFF OFF unchanged unchanged unchanged unchanged Tab 9 b MPXPRO 0300055EN rel 1 3 07 03 13 64 CAREL 9 5 Alarm parameters Assign probe for high and low temperature alarms parameters AA AA2 AA selects the probe to be used for measuring the high and low temperature alarms with reference to thresholds AL and AH AA2 is the same as AA for thresholds AL2 and AH2 Par_ Description Def Min Max UM AA _ Assign probe for high AH and low AL tempera 1 1 14 ture alarms 1 control Sreg 2 virtual Sv
18. 150 C Pt 1000 10000 a 0 C range from 50 C to 90 C measurement error 1 C in range from 50 C to 50 C 3 C in range from 50 C to 90 C 2000 Q a 0 C range from 50 C to 90 C Probe type ieee measurement error 2 C in range from 50 C to 25 C i resolution 0 1 fs Oto av rademelne measurement error 2 fs maximum 1 typical resolution 0 5 fs COLOMA measurement error 8 fs maximum 7 typical Oto 10V resolution 0 1 fs measurement error 9 fs maximum 8 typical according to the model EN60730 1 UL relay 250 V operating cycles 250 V operating cycles 6 A res 240 Vac N O N C Relay outputs Ri psp Sona 64 hone A onNO 100000 1 2 Hp 240 Vac N O 30000 S 1 6 Hp 120 Vac N O R3 10 2 A su N O 100000 10 A res 240 Vac 30000 R2 10 10 A 100000 10 A res 1Hp 240 120 Vac N O 6000 reinforced insulation from very low voltage parts 6mm in air 8mm on surface 3750V insulation primary insulation between independent relay outputs 3mm in air 4mm on surface 1250 V insulation Model Output voltage maximum current available not isolated from board earth Analogue outputs PWM 1 2 MXxxx 2 3 xxxx 12 Vdc 20 mA max for each PWM Type of connections Cross section Maximum current model relay power supply probes Connections MXxxxxxx A G M x screw 180 screw 180 screw 180 for cables from 0 5 to 2 5mm 12A MXxxxxxx C O x plug in 180 plug in 180 plug in 180 The correct sizing of the power cables and the con
19. 5 full optional board with 2 PWM outputs 12 Vdc max 20 mA EV driver board pre installed and including the 0 to 10 Vdc output all types of probes can be connected MPXPRO 0300055EN rel 1 3 07 03 13 1 2 Functions and main characteristics MPXPRO has been designed to offer maximum installation flexibility and significant energy saving when fitted with the CAREL E2V or PWM electronic expansion valve driver It features 7 analogue inputs for probes and 5 digital inputs configurable by parameter The following probes can be used saturated evaporation pressure and superheated gas temperature probe required for superheat control outlet intake and defrost probe for showcase temperature control defrost probe for the second evaporator two auxiliary monitoring probes ambient temperature probe glass temperature sensor and humidity probe to prevent the showcase windows from misting In the later case the PWM outputs can be used either to control the glass heaters or the evaporator fans for air circulation If the stepper expansion valve is not used a second defrost probe can be installed to manage the defrost on a second evaporator The 5 digital outputs relays can control the compressor solenoid valve evaporator fans defrost light and alarm The digital inputs can be used for switching between day and night including from light sensor for the defrost calls for the door or curtain switch or to activate alarms By creating
20. 6 9 Electronic valve See paragraph 5 7 The advanced parameters for the evaporator fans concern the minimum and speed maximum the selection of the type of motor inductive or capacitive and the setting of the start up time Par Description Def Min Max UoM F6 _ Maximum fan speed 100 F7 100 F7__ Minimum fan speed 0 0 F6 F8 Fan peak time 0 0 240 S 0 function disabled F9 Select fan control with output PWM1 2 1 0 1 with phase cutting speed control 0 by pulse 1 by duration F10 Evaporator fan forcing time at maximum 0 0 240 min speed 0 function disabled Tab 6 al F6 is the maximum fan speed expressed as a of the output For 0 to 10 V outputs it represents the output voltage at maximum speed as a percentage For phase control outputs it represents the maximum portion of the semi wave applied to the load as a percentage The same is true for the minimum speed set for F7 The fan peak time F8 represents he operating time at maximum speed set using parameter F6 to overcome the mechanical inertia of the motor F10 represents the time he fan is operated at maximum speed for the peak time F8 f the fan is operated for too long at a reduced speed ice can form on the blades To avoid this at intervals of F10 minutes the fan is forced to the maximum speed for the time expressed by the parameter F8 f the evaporator fan speed is controlled with phase control F9 determines
21. 7 c 0 enabled 1 disabled Tab 7 f Below is a summary of the modes that are active for each setting Buttons Functions H6 Terminal keypad lock configuration z 6 ag T E 24 8 Fa Parameter H6 is used to disable the functions relating to the individual v S T 2 ES 2 Z amp BE gt 2 g9 z buttons on the keypad D w g Q zs ee Be eh 5o Par Description Def Min Max UoM 25 ca H6 Terminal keypad lock configuration 0 0 15 z o YEs YES YES YES YES NO NO YES Tab 7 9 1 YES YES YES YES YES YES YES YES 2 TES YES YES YES YES NO NO NO 3 YES YES YES YES YES YES YES NO 4 YES YES NO NO YES NO YES YES 5 YES YES NO NO YES NO NO VES Tab 7 b MPXPRO 0300055EN rel 1 3 07 03 13 CAREL Buttons Associated function Set et a Prg v a ime Network e Local defrost Enable Disable e Mute defrost e Network defrost aux light output je Enter Continuous cycle Continuous cycle HACCP e Enter HACCP Tab 7 h Active buttons H6 Set A A Prg H6 Set 5 p Prg 0 YES YES YES YES 8 YES YES MES O 1 O YES YES YES 9 O YES YES O 2 O NO YES YES 10 YES NO YES O 3 O NO NO YES 11 O NO YES O 4 YES YES NO YES 12 YES YES NO O 5 O YES NO YES 13 O YES NO O 6 YES NO NO YES 14 YES NO NO O 7 O NO NO YES 15 Q NO NO O Tab 7 i Htc Clock fitted Par Description Def
22. Display on user terminal and on remote display Parameters t1 and t2 select the variable shown on the display during normal operation In the event of alarms t enables the display of alarms on the remote display For example during defrost if t 0 and d6 0 the display does not show dEF alternating with the temperature set for t2 while when t 1 the display shows dEF alternating with the temperature set for t2 Par Description Def Min Max UoM t Display on user terminal 12 0 14 0 Terminal disabled 1 to 11 Probe 1 to 11 12 Control probe 13 Virtual probe 14 Set point t2 Display on remote display see t1 12 0 14 t Display signals alarms on remote display 0 0 1 0 disabled 1 enabled Tab 7 d 5 6 Temperature unit of measure and display decimal point Par Description Def Min Max UoM 5 Temperature unit of measure 0 0 7 OC 15 F 6 Display decimal point 0 0 1 0 enabled 1 disabled Tab 7 e Note the pressure probe minimum and maximum limits vary based on the selected unit of measure H4 Disable buzzer Par Description Def Min Max UoM The buzzer on the user terminal can be disabled by setting parameter H4 H2 Disable keypad and remote control 1 0 5 Par Description Def Min Max UoM functions H4 Terminal buzzer 0 0 1 Tab
23. Fig 5 h Key T temperature Sv virtual probe t time Sm outlet probe Sr intake probe Double thermostat and control with electronic valve See paragraph 6 5 MPXPRO 0300055EN rel 1 3 07 03 13 Shared network solenoid If using solenoid valves on Master controllers only the solenoid output relay 1 AUX4 can be configured as a network solenoid output The function is useful for multiplexed showcases the network solenoid valve is only connected to the Master controller which opens when at least one of the Slaves is in cooling request Par Description Def Min Max UoM r7 Master solenoid valve configuration 0 0 1 0 local valve 1 network valve connected to Master Tab 5 q If configured as the network solenoid the valve is open if at least one of the controllers requires cooling closed if there is no control request or if at least one of the controllers has a serious valve alarm low superheat low suction temperature high evaporation pressure when suitably configured See parameters P10 and PM5 paragraph 6 10 Fig 5 Key E Fan forced evaporator SV Solenoid valve EEV Electronic expansion valve P Evaporation pressure PEu T Superheated gas temperature tGS C Condenser 5 6 Defrost Introduction Parameters td1 to td8 can be used to set up to 8 defrost events based on the controller clock RTC and to activate the Power Defrost see par 6 7
24. relative 1 absolute AL Low temperature alarm threshold 67 4 50 0 50 0 ChE F A AH High temperature alarm threshold 67 10 50 0 50 0 CF F A AL2 Low temperature alarm 2 threshold 67 0 50 0 50 0 Oa A A AH2 High temperature alarm 2 threshold 67 0 50 0 50 0 CF A A Ad Delay time for high and low temperature alarms 67 120 0 240 min F A A4 Configure digital input DI1 on 4 32 0 0 9 C A d 5 door switch with compressor and 0 input not active evaporator fans OFF 1 immediate external alarm 6 remote ON OFF 2 delayed external alarm 7 curtain switch 3 enable defrost 8 start stop continuous cycle 4 start defrost 9 light sensor A5 Configure digital input DI2 on S5 see A4 32 0 0 9 A A6 Configure solenoid compressor control during external alarm immediate or delayed with 67 0 0 100 min A fixed 15 min OFF time 0 always OFF 100 always ON A7 Delay time for delayed external alarm 67 0 0 240 min A A8 Configure function of virtual digital input see A4 42 0 0 8 A AQ Select digital input propagated from Master to Slaves only on Master 42 0 0 5 A 0 from supervisor 3 DB 1 D1 4 Di4 2 DI2 5 DI5 A10 Configure function of digital input DI3 on S6 see A4 32 0 0 9 C A A11 Configure function of digital input Dl4 on S7 see A4 32 0 0 9 A A12 Configure function of digital input DI5 see A4 32 0 0 8 C A Ar Signal alarms from Slave to Master 68 1 0 1 A A 0 not enabled 1 enabled A13 Hot gas safety procedure for Slave
25. te 0 monitoring disabled 6 superheated gas probe tGS 1 control probe Sreg 7 saturated evaporation temp probe tEu 2 virtual probe Sv 8 auxiliary defrost probe Sd2 3 outlet probe Sm 9 auxiliary probe Saux 4 defrost probe Sd 10 auxiliary probe 2 Saux2 5 intake probe Sr rt Duration of the current maximum and minimum temperature monitoring session 46 0 999 hour A W rH Maximum temperature acquired in the session 46 CE A ee rL Minimum temperature acquired in the session 46 a Oa A w r6 Probe for night time control 35 0 0 1 G 5 0 virtual probe Sv 1 intake probe Sr ro Control offset with probe error 45 0 0 0 0 20 C F A W 17 Master solenoid valve configuration 36 0 0 1 eo 0 local valve 1 network valve connected to Master rsu Suction valve closure delay in normal regolation mode 47 0 0 999 sec E w CMP compressor cO Delay enable compressor and evaporator fans on power up 47 0 0 240 min A Gl Minimum time between successive starts 47 0 0 15 min A c2 Minimum OFF time 47 0 0 15 min A c3 Minimum ON time 47 0 0 15 min A B c4 ON time for duty setting operation Toff 15 minutes fixed 47 0 0 100 min A 0 compressor valve always OFF 100 compressor valve always ON cc Running time in continuous cycle 47 1 0 15 hour A O c6 Low temperature alarm bypass time after continuous cycle 47 60 240 min A O MPXPRO 0300055EN rel 1 3 07 03 13 58 CAREL
26. 1 PWM valve 2 CAREL E V valve Tab 6 a0 MPXPRO 0300055EN rel 1 3 07 03 13 50 CAREL Superheat set point parameter P3 This is used to set the reference superheat value for the control of the electronic valve It does not determine the actual superheat value but rather the desired value MPXPRO with PID control tends to maintain the actual superheat calculated based on the probe readings around the value set for this parameter This is done by gradually varying the opening of the valve based on the difference between the actual superheat and the set point A of the installation the position of the probes and other factors Consequently depending on the installation the set point read may deviate from the actual value Set point values that are too low 2 to 4 K albeit ideally usable may cause problems involving the return of liquid refrigerant to the compressor rack Important the set point value calculated depends on the quality Par Description Def Min Max UoM P3 Superheat set point 10 0 0 0 25 0 K Tab 6 ap Initial valve position when control starts par cP1 This is used to set the position of the valve as a percentage when control starts High values ensure intense and immediate cooling of the evaporator when each call is sent however may cause problems if the valve is oversized with reference to the cooling capacity of the controller Low values on the other ha
27. 3 outlet Sm 4 defrost Sd 5 intake Sr 6 gas surrisc tGS 7 saturated evap temp tEu AA2_ Assign probe for high AH2 and low AL2 tempe 5 1 14 rature alarms see AA 8 auxiliary defrost Sd2 9 auxiliary Saux 0 auxiliary 2 Saux2 1 ambient temp SA 2 amb humidity SU 3 glass temp Svt 4 dewpoint SdP Tab 9 c Alarm parameters and activation AL AH is used to determine the activation threshold for the low high emperature alarm LO HI The value set for AL AH is continuously compared against the value measured by the probe defined by parameter AA Parameter Ad represents the alarm activation delay in minutes the ow temperature alarm LO is activated only if the temperature remains below the value of AL for a time greater than Ad The alarm may relative or absolute depending on the value of parameter A1 In the former case A1 0 the value of AL indicates the deviation from the set point and thus he activation point for the low temperature alarm is set point AL If the set point changes the activation point also changes automatically In the atter case A1 1 the value of AL indicates the low temperature alarm hreshold The low temperature alarm active is signalled by the buzzer and code LO on the display The same applies to the high temperature alarm HI with AH instead of AL The meaning of parameters AL2 AH2 AA2 an
28. 4 12 Control probe 5 Probe 5 13 Virtual probe 6 Probe 6 14 Set point 7 Probe 7 t2 Display on remote display 57 12 0 14 A A 0 Remote display disabled 8 Serial probe 8 1 Probe 1 9 Serial probe 9 2 Probe 2 0 Serial probe 10 3 Probe 3 1 Serial probe 11 4 Probe 4 2 Control probe 5 Probe 5 3 Virtual probe 6 Probe 6 4 Set point 7 Probe 7 to Configure user terminal remote display 57 3 0 3 A A User terminal Remote display 0 Present Present 1 Optional Present 2 Present Optional 3 Optional Optional P1 Type of probe group 1 S1 S2 3 28 0 0 3 A A 0 NTC Standard Range 50T90 C PTC Standard Range 50T150 C T1000 Standard Range 5071150 C TC L243 Standard Range 50T90 C P2 Type of probe group 2 S4 S5 27 0 0 3 A A 0 NTC Standard Range 50T90 C PTC Standard Range 50T150 C PT1000 Standard Range 50T150 C 3 NTC L243 Standard Range 50T90 C P3 Type of probe group 3 S6 27 0 0 4 A A NTC Standard Range 50T90 C PTC Standard Range 50T150 C PT1000 Standard Range 50T150 C 3 NTC L243 Standard Range 50T90 C 4 0 to 5V ratiometric probe P4 Type of probe group 4 S7 41 0 0 6 A A 0 NTC Standard Range 50T90 C PTC Standard Range 50150 C 2 PT1000 Standard Range 50T150 C 3 NTC L243 Standard Range 50T90 C 4 0 to 5V ratiometric probe 5 0 to 10V input 6 4 to 20 mA input A
29. 41 0 0 11 A A Fn Assign dewpoint value SdP to a serial probe 41 0 0 4 A A 0 Function disabled 3 Serial probe 10 1 Serial probe S8 4 Serial probe 11 2 Serial probe S9 cl Probe 1 calibration 3 0 20 20 CCF F A c2 Probe 2 calibration 3 0 20 20 COF F A 3 Probe 3 calibration 3 0 20 20 CGR F A c4 Probe 4 calibration 4 0 20 20 CCR A A A c5 Probe 5 calibration 4 0 20 20 CCF A A A c6 Probe 6 calibration 4 0 20 20 C F A A barg RH c7 Probe 7 calibration 4 0 20 20 CECAF A A barg RH U6 Maximum value of probe 6 27 41 93 L6 160 if barg A A A 5 0 RH 800 if 5 1 L6 Minimum value of probe 6 27 41 1 20if 5 0 U6 barg A A 90 if S 1 RH U7 Maximum value of probe 7 4 9 3 L7 160 if barg A A 5 0 RH 800 if 5 1 L7 Minimum value of probe 7 4 1 0 20 if 5 0 U7 barg A A 90 if 5 1 RH CtL Control OFF ON OFF control 44 0 0 1 A 5 0 ON 1 OFF St Set point 35 50 rl r2 CF F we St2 Intake probe set point with Double thermostat 44 50 r 2 GPE A W rd Set point differential St 35 2 0 1 20 GPF F ey rd2 Set point differential St2 with Double thermostat 0 0 20 CEE A W 0 0 function disabled r1 Minimum set point 44 50 50 r2 IGE A W r2 Maximum set point 44 50 rl 50 G F A S 3 End defrost signal by timeout 48 0 0 1 9 0 disabled 1 enabled r4 Automatic night time set point variation 35 0 50 50 C E eo t5 Maximum and minimum temperature monitoring probe 46 0 0 10
30. Alarm in Flashes in the event of alarms during normal operation e g high low temperature or alarms external digital progress from external digital input immediate or delayed on both Master and Slave controllers alarm Night time sdei Clock eoaahen Clock alarm On power up the icon indicates the Real Time Clock RTC is fitted 6 ee Active Not active On the Master A Sewic indicates Upload 7 System error in During commissioning indicates that the parameter has not been set during the connection to parameters to progress the remote control indicates override in progress Slaves HACCP HACCP REE PUNE NOR z pee Palate During the HACCP alarm HA and or HF is shown on the display enabled saved Continuous nee zii amp Continuous cycle cycle function N Request Flashes when activation is prevented due to external disabling or procedures in progress e g sctivatad minimum compressor OFF time Tab 3 a Note e with the alarm clock service and HACCP icons active flashing has priority over ON For example in night time operation clock icon on the icon will flash if there is a clock alarm the value to be displayed on the user terminal can be configured by setting parameter t1 and on the remote display by setting parameter t2 MPXPRO 0300055EN rel 1 3 07 03 13 3 2 Keypad Front keypad controls CAREL Display when setting notes
31. Description Def Min Max UoM from the supervisor These can be defined as temperature probes or Fd Assign superheated gas temperature probe 0 0 generic probes according to the setting of parameter P5 tGS FE Assign saturated evaporation pressure 0 0 P5 Probe 8 Probe 9 Probe 10 Probe 11 temperature PEu tEu 0 T T T T FF Assign defrost temperature probe 2 Sd2 0 0 1 G T T T See FA 2 F G T T FG_ Assign auxiliary temperature probe 1 0 0 3 G T T Saux1 See FA 4 T T G T FH__ Assign auxiliary temperature probe 2 0 0 5 T G T Saux2 See FA 6 T G G T F Assign ambient temperature probe SA 0 0 7 G G A See FA 8 T E T G FL_ Assign ambient humidity probe SU See 0 0 9 T T G FA 10 T G T G FM_ Assign glass temperature probe Svt See 0 0 11 G T G FA iz i c c Fn Assign dewpoint value to serial probe Sdp O 0 4 14 F G G G 0 Func disabled 3 Serial probe S10 15 G G G G 1 Serial probe S8_ 4 Serial probe 11 Tab 6d 2 Serial probe S9 Key T temperature probe G generic probe Tab 6 f Note in models with built in driver the default values are Fd 4 and FE 6 MPXPRO 0300055EN rel 1 3 07 03 13 Calibration parameters c4 c5 c6 c7 cE Parameters c4 to c7 are used to correct the reading made by probes S4 to S7 respectively Serial probes S8 to S11 do not require calibration cE calibrates the saturated evaporation temperature Calibration is performed befo
32. In 0 allora 52 g SnO a Sn 0 lt t HOhalostesso significato del parametro SA di IR MPX HO 2 a HO 2 od Ind seriale 34 Ind seriale 40 p In 0 n In 0 a S0 Bs J sn 0 S HO 3 HO 3 Ind seriale 35 In 0 Sn 0 S4 HO 4 Fou Ind seriale 36 Ma ter Slave network max 10 meters between controllers In 0 i PI sisi sve saves sieves sieves s5 Sn 0 Shield 7 T T T T HO 5 Fig 4 q 4 4 Checks after commissioning Once having completed the installation configuration and programming operations after commissioning the controller check that e the programming logic is suitable to control the unit and the installation in question the day night time bands have been set correctly e the standard display has been set on the user terminal and remote display the unit of measure has been set for the temperature probes C or F the label on the cover of each controller shows serial address Master or Slave the number of Slaves any remarks A Important all the alarms with manual reset can be reset by pressing Prg mute and UP together for more than 5 seconds See the chapter on Alarms 29 MPXPRO 0300055EN rel 1 3 07 03 13 5 1 Probes analogue inputs Introduction MPXPRO features a maximum of 7 analogue inputs and 1 digital input DIS Analogue inputs S4 S5 S6 S7 can also be configured as digital inputs called DI1 DI2 DI3 D14 by setting param
33. OFF Sm rd St Fig 6 e Key Sm outlet probe Sr intake probe R control request CAREL R ON OFF Sr rd2 St2 Fig 6 f rd differential for St rd2 differential for St2 Below is an example of the temperature trend on a vertical showcase during the day and at night 15 17 C UNS Sv Sm Sr 2 19 21 C 99 8C o cee onessssees ss bdo ee 21 23 C Fig 6 9 Key Sm Outlet probe Sv Virtual probe Sr Intake probe t time T Temperature NIGHT Sm 19 21 C DAY Sm 21 23 C Set point 22 C Set point 22 C gt SUERA m 77 1 WW te te J ra LAT J Lr o n LT L Som Ll E him LA Sr 15 17 C Sr 12 14 C Set point 16 C Set point 16 C Fig 6 h Fig 6 i Key Sm Outlet probe Sr Intake probe Note e if one of the probes has an error or is missing it is considered as signalling the request if both probes are faulty or missing the controller switches to Duty setting mode see paragraph 6 6 A Important if the double thermostat function is activated the setting of the following parameters has no effect 16 probe for night time control r4 automatic night time set point variation CAREL Control offset with probe error parameter ro
34. Po6 in seconds and not to the maximum 480 steps for opening the stepper valve All the remarks made for the stepper valve can thus apply to the PWM valves considering these differences CAREL 7 OPTIONAL CONFIGURATIONS 7 1 Other configuration parameters The other configuration parameters that need to be set when commissioning the controller concern e the measurement stability of analogue probes e the selection of the user terminal and or remote display e the enabling of the keypad remote control and buzzer accessory e the standard display on the user terminal and the remote display e the display of messages alarms on the remote display the display in C F and the decimal point the locking of the buttons on the user terminal e the availability of the RTC real time clock 2 Analogue probe measurement stability Par Description Def Min Max UoM 2 Analogue probe measurement stability 4 1 15 Tab 7 a Defines the coefficient used to stabilise the temperature measurement Low values assigned to this parameter mean a prompt response of the probe to variations in temperature the reading however becomes mostly sensitive to disturbance High values high slow down the response but guarantee greater immunity to disturbance that is a more stable more precise and filtered reading to Select user terminal remote display Par Description Def Mi
35. Silk screened connectors kit for E2V stepper driver module with horizontal screws MX3COPWMO1 Silk screened connectors kit for PWM driver option with horizontal screws MX3CDB5RO Neutral connectors kit for 5 relay main board with vertical screws MX3CDB3RO Neutral connectors kit for 3 relay main board with vertical screws MX3CDSTHO1 Neutral connectors kit for E2V stepper driver module with vertical screws MX3CDPWMO1 Neutral connectors kit for PWM driver module with vertical screws MX3CRA104 Connectors kit 0 to 10 Vdc analog module Tab 10 b MPXPRO 0300055EN rel 1 3 07 03 13 68 CAREL Examples application no code description MX30M25HOO MPXPRO complete Master controller with EEV management including RS485 and RTC 5 relays Stepper EEV 2 PWM 0 to 10 Vdc NTC PT1000 horizontal screw connector kit IROOUGC300__ Terminal green LEDs keypad buzzer commissioning port IR 3 NTCO OHPOO __ NTC probe IP67 cable I 50T50 C NTCO OHFO1 NTC probe IP67 cable m 50T90 C STRAP ON multiple package 10 pcs showcase Master SPKTOO13RO Ratiometric pressure probes for MPXPRO ratiometric pressure transducer with 1 4 SAE steel female connector 7 16 20 UNF 2B PACKARD connector single package 0 to 5 Vdc 1 to 9 3 bar 0 to 150 psiA SPKCOO 310 Ratiometric pressure probes for MPXPRO ratiometric pressure transducer with 1 4 SAE steel fem
36. Tab 6 n Compressor output N H10 0 request active L No nc c 3 74 5 H10 1 request active NO NC C Fan output N H11 0 request active oR 12 13 m 0 m H11 1 request active iE MPXPRO 0300055EN rel 1 3 07 03 13 6 5 Control Minimum and maximum set point values parameters r1 and r2 The minimum and maximum value available for the set point can be defined by parameter Par Description Def Min Max UoM ial Minimum set point 50 50 2 OE r2 Maximum set point 50 ial 50 GFF Tab 6 0 ON OFF parameter OFF The parameter OFF is used to act on the ON OFF status of the control A any digital input configured as remote ON OFF has priority upper respect to the control from the supervisor or to the parameter OFF Par Description Def Min Max UoM OFF ON OFF control 0 0 1 0 ON 1 OFF Tab 6 p If more than one digital input is selected as ON OFF ON status will be activated when all the digital inputs are closed The unit is OFF even if just one of the contacts closes In this operating mode the display shows the standard display alternating with the message OFF When switching from ON to OFF and vice versa the compressor protector times are observed When OFF the following are possible access the F C A parameters and the set point e select the probe to be displayed activate remote ON OFF e display the
37. be skipped is increased by 1 if the defrost ends normally the next defrost is performed e when the counter reaches 3 three defrosts are skipped and then the counter is reset to 1 on power up the defrost is performed 7 times without increasing the counter from the eighth on the counter is updated Note in power defrost mode see the following paragraphs the maximum defrost duration dP1 and dP2 is increased by the value of parameter ddP Power defrost parameters ddt ddP Power defrost is used to increase the end defrost threshold dt1 dt2 for the second evaporator and or the maximum defrost duration dP1 dP2 for the second evaporator These increases allow longer and more effective defrosts Power defrost are performed on each defrost call during night status or when suitably configured by the RTC parameters sub parameter P of parameters td1 to td8 so as to allow the user to choose the conditions that are most suitable for this special procedure Power Defrost is activated when at least one of the increases ddt or ddP has any value other than zero Par Description Def Min Max UoM ddt Additional end defrost temperature delta 0 0 20 0 20 0 C F for Power defrost mode ddP Additional maximum defrost time delta for 0 0 60 min Power defrost mode P__ Defrost 1 to 8 enable 0 0 1 Power defrost 0 normal 1 Power defrost Tab 6 ak 48 CAREL 6 8 Evaporator fans
38. connections and the operation of the application CAREL MPXPRO remote control Ge Restore ALL a BS amp 2 Solenoid Res E V ew ae o wm Temp Probes Defrost Digital Out Open Close an a A E V Probes Lights Analog Out 10stp 5 e G eE ACC Probes Fans Digital In 10stp 5 Status Outputs Commands EV product part number IRTRMPX000 Fig 3 k Description The MPXPRO remote control features a series of buttons divided into groups based on their function In addition to the traditional remote keypad it has a special section for displaying the overall status of the controller probes internal variables manually overriding the inputs and outputs and manually positioning the electronic expansion valve EEV The MPXPRO remote control interacts with all terminals displays fitted with infrared receiver IROOUGC300 IROOXGC300 The parameter relating to the enabling code is H3 Par Description Def Min Max UoM H3 Remote control enabling code 0 0 255 7 00 programming from remote control without code Tab 3 c Remote control during start up When started for the first time MPXPRO displays the start up procedure In this phase the remote control is always active on all controllers without distinction between codes and consequently the parameters can be set without having to activate the remote control or enter specific codes As a result operate near th
39. ee eee 90 if 5 1 mo sisal Tab 6 a i am U7 Maximum value of probe 7 9 3 L7 800 if 5 lt 1 barg RH T 20 if 5 0 L7 Minimum value of probe 7 1 0 90 if 5 1 U7 barg RH Type of probe group 2 parameter P2 Tab 6 e Set the probes type S4 e S5 See the paragraph 4 3 Assign probe functions parameters Fd FE FF Type of probe group 3 parameter P3 FG FH FI FL FM Fn Sei the PINE type S6 see the paragraph 4 3 For parameters Fd and FE see paragraph 4 3 As well as the outlet Sm intake Sr and defrost probes Sd MPXPRO also Type of probe group 4 parameter P4 features Set the probe type S7 See the paragraph 5 1 defrost probe Sd2 used on the primary or secondary evaporator e auxiliary temperature probe 1 Par _ Description Def _ Min_ Max UoM e auxiliary temperature probe 2 P4__ Type of probe group 4 S7 0 0 6 ambient temperature probe Tab 6 b ambient humidity probe glass temperature probe e dewpoint serial probe Type of probe group 5 parameter P5 The ambient temperature is used by the algorithm to calculate the Par _ Description l Def _ Min__ Max__ UoM dewpoint together with the ambient humidity and glass temperature PS tue probe group 5 serial probes 58 0 9 1S P The value of the dewpoint can also be sent by the serial probe for 2 Tab 6c example from the supervisor See paragraph 6 3 MPXPRO can also manage up to 4 serial probes which are set directly Par
40. has higher priority Fig 6 k Key t time CMP compressor 46 CAREL 6 7 Defrost The advanced parameters for defrost management include general parameters on the time base activation delays synchronization between Master and Slaves the stages of the defrost such as pump down and dripping and the advanced defrost functions such as Skip defrost Running time Sequential stops Power defrost End defrost synchronized by Master parameter d2 Par Description Def Min Max UoM d2 End defrost synchronized by Master 1 0 1 0 not synchronized 1 synchronized Tab 6 2 The parameter determines whether or not in a local network MPXPRO awaits an end defrost signal from the Master at the end of the defrost End defrost signal by timeout parameter r3 Par Description Def Min Max UoM r3 End defrost signal by timeout 0 0 1 0 disabled 1 enabled Tab 6 aa For defrosts that end by temperature d0 0 1 5 this enables the end defrost by timeout signals Ed1 and Ed2 Defrost on power up parameter d4 Par Description Def Min Max UoM d4 Defrost on power up 0 0 1 0 disabled 1 enabled Master network defrost Slave local defrost Tab 6 ab The defrost call on power up has priority over the control request and the activation of the continuous cycle For Master controllers the defrost on power
41. last activation of the solenoid valve PM5 allows the local or network solenoid valve if available based on the configuration of the system see parameter r7 to be closed upon activation of the MOP alarm If the expansion valve 0 steps is closed completely during MOP status before the activation of the alarm the solenoid valve configured is also closed LSA Low suction temperature When the suction temperature falls below the threshold the alarm is activated after the set delay closing the electronic valve or the local and or shared tLAN solenoid valve if available The alarm is reset when the suction temperature exceeds the set threshold plus the hysteresis Reset is automatic for a maximum of four times in a two hour period Upon the fifth activation in such period the alarm is saved and requires manual reset from the user terminal or supervisor Par Description Def Min Max UoM P11__ LSA low suction temperature threshold 45 0 50 0 50 0 C F P12 LSA alarm delay 600 0 999 s 0 alarm disabled P13 LSA alarm differential C 10 0 0 0 60 0 C F 0 reset always automatic P10 Enable close solenoid valve optional for 0 0 1 low superheat LowSH and or low suction temperature LSA Tab 6 az P11 represents the suction temperature below which the alarm is activated after the corresponding delay The threshold for resetting the alarm is represented b
42. lasting the time dS1 At the end of the defrost instant B OFFTIME and ONTIME are reloaded with dS1 and dS2 value and control resumes _ OFFTIME 0 i 1 regulation regulation ON CMP OFF l C ONTIME 0 2 regulation defrost regulation l I ON i CMP OFF I l l l dS1 oa A B Fig 6 m Key CMP Compressor t Time The purpose is to stop control and allow natural defrosts only when necessary Note the setting of parameter F3 has no effect Evaporator fan management depends on parameter FO MPXPRO 0300055EN rel 1 3 07 03 13 CAREL Skip defrost parameters d7 dn The function applies to defrosts that end by temperature otherwise it has no effect The Skip defrost function evaluates whether the defrost duration is less than a certain threshold dn1 dn2 and based on this establishes whether or not the following defrosts will be skipped Max UoM Par Description Def Min d7 Skip defrost 0 0 0 disabled 1 enabled dn Nominal defrost duration for Skip defrost 75 0 100 dP1 _ Maximum defrost duration 45 1 240 min dP2 Maximum secondary evaporator defrost 45 1 240 min duration Tab 6 aj Thresholds dn1 evaporator 1 and dn2 evaporator 2 are defined by dn dn dn1 edP1 dn2 100 100 dP2 The algorithm keeps a counter of the defrosts to be skipped e if the defrost ends in a time less than dn1 the counter of the defrosts to
43. list of parameters in the selected category is displayed Category Icon Category Icon Probes A Electronic valve A Control we Configuration AUX Compressor Alarm log AQ Defrost Bg HACCP HACCP Alarm A RTC O Evaporator fans Tab 3 b 3 press UP or DOWN until reaching the desired parameter 4 press Set to display the associated value 5 increase or decrease the value of the parameter using UP or DOWN 6 press Set to temporarily save the new value and return to display the parameter code 7 iftheparameterhassub parameters afterhavingselectedtheparameter press Set again to enter the sub menu use the UP or DOWN button o scroll between the sub parameters which can be modified like a normal parameter Press Set again to temporarily save the values and Prg mute return to the higher level menu 8 repeat steps from 3 to 7 to modify other parameters 9 to permanently save the new values assigned to the parameters Prg mute for 5 seconds This exits the parameter setting procedure Note allthe changes made to the parameters temporarily stored in the RAM can be cancelled returning to the standard display by not pressing any button for 60 seconds The values of the clock parameters however are saved when entered if the controller is powered down before pressing Prg mute all the changes made to the parameters will be lost in the two parameter setting procedures C and A the new values are only saved after havi
44. occurred see the corresponding table d remove the key from the controller upload download extended download OFF OFF ON J Fig 2 p Fig 2 q Fig 2 1 CAREL LED signal Cause Meaning Solution The parameters cannot be copied due to incom patibility of the firmware versions Check compatibili y of the firmware versions see notes above Controller not Orange flashing compatible Repeat the pro The button on gt cedure following Incorrect use of Red flashing the key has been ea the key he instructions in released too early point c The data on the Repeat the ope Orange steady Data copy error controller orthe ration or contact key may be corrupt service cu ner boWwerRa Check that the Off y p ey is powered or or fault contact service Tab 2 9 The key can be programmed not only from the MPXPRO controller but also directly from a PC using the special USB I2C converter IRPOPZPRGOO and the VPM program Using this connection the PC can completely program the key Specifically the following operations are possible set the values of the parameters both unit and operating set the visibility and upload attribute write and read the parameters to from a file and check the parameters 2 11 Commissioningtool VPM VisualParameter Manager 7 MPXPRO can communicate directly with a PC using the commissioning port This connection can be used to pro
45. paragraph 5 6 Liquid solenoid valve Available only for R1 AUX4 modifiable only with H13 used to activate the liquid solenoid valve when ultracap technology is not available or in applications with thermostatic valves NB the solenoid function in the instrument is always active even if the corresponding output is not configured The icons and variables on the supervisor will thus reflect normal operation of the instrument 5 5 Control Introduction There are various modes for controlling air temperature for the conservation of foodstuffs in cold rooms and showcases The following figure shows the position of the intake probe Sr and the outlet probe Sm The virtual probe Sv is a weighted average of these two based on parameter 4 according to the following formula Sm 100 4 Sre 4 Sv 100 Par Description Def Min Max UoM 4 Virtual probe composition 0 0 100 0 outlet probe Sm 100 intake probe Sr Tab 5 m For example if 4 50 Sv Sm Sr 2 represents the estimated value of the air temperature around the food being cooled Example vertical showcase DAY 5 gt gt t PIE Y Sv Sm Sr 2 Key Sm Outlet probe Sv Virtual probe Sr Intake probe 34 CAREL During the day most of the load of the showcase is due to the warm air that enters from the outside and mixes with the cool air inside Contro
46. recent alarm A maximum of 3 errors are saved in a FIFO list HA to HA2 HAn indicates the number of type HA alarms activated Par Description Def Min Max UoM HtO HACCP alarms present 0 0 1 HAn Number of type HA alarms 0 0 15 HA to Type HA HACCP alarms activated press HA2 __ Set y Alarm 1 to 3 Year 0 0 99 year M Alarm 1 to 3 Month 0 1 12 __ month d Alarm 1 to 3 Day of the month 0 1 31 day h Alarm 1 to 3 Hour 0 0 23 hour n Alarm 1 to 3 Minutes 0 0 59 minute Alarm 1 to 3 Duration 0 0 240 minute Htd HACCP alarm delay 0 0 240 0 monitoring disabled Tab 9 i ALARM Key 5 Measurement probe Ad Delay time for high and low temperature alarms HACCP alarm delay 2 setpoint ne 0 monitoring disabled AH High temperature alarm Time threshold ALARM Type HA HACCP alarm MPXPRO 0300055EN rel 1 3 07 03 13 66 CAREL 10 TECHNICAL SPECIFICATIONS Model Voltage Power Power supply MX3xxxxHxx 110 230 V 50 60 Hz 11 5 VA 50 mA max MX3xxxx 3 5 6 Hxx 110 230 V 50 60 Hz 23 VA 115V 200 mA 230V 100 mA max reinforced insulation from very low voltage parts 6mm in ai
47. relay no EEV 230 Vac multiple package 20 pcs no connectors kit MX10SOOEI11 PXPRO light Slave 5 relay no EEV 230 Vac multiple package 20pcs no connectors kit MX10S10EI11 PXPRO light Slave 3 relay no EEV 230 Vac multiple package 20pcs no connectors kit MX30M21HOO PXPRO complete controller with RS485 e RTC Master 5 relay 115 230 Vac 2 PWM NTC Pt1000 connectors kit with horizontal screws MX30S21HOO PXPRO complete controller Slave 5 relay 115 230 Vac 2 PWM NTC Pt1000 connectors kit with horizontal screws MX30S31HOO PXPRO complete controller Slave 3 relay 115 230 Vac 2 PWM NTC Pt1000 connectors kit with horizontal screws PXPRO complete controller with E2V management with RS485 e RTC Master 5 relay 115 230 Vac E2V Stepper amp Ultracap 2 PWM 0 to10 Vdc MX30M25HOO en TC Pt1000 connectors kit with horizontal screws MX30S25HOO PXPRO complete controller with E2V management Slave 5 relay 115 230 Vac E2V Stepper amp Ultracap 2 PWM 0 to 10 Vdc NTC Pt1000 connectors kit with horizontal screws MX30M24HOO PXPRO complete controller with EEV management with RS485 e RTC Master 5 relay 115 230 Vac E2V PWM 2 PWM 0 to 10 Vdc NTC Pt1000 connectors kit with horizontal screws MX30S24HOO PXPRO complete controller with EEV management Slave 5 relay 115 230 Vac E2V PWM 2 PWM 0 to 10 Vdc NTC Pt1000 connectors kit with horizontal screws MX30M21HRO PXPRO complete controller with RS485 e RTC Master 5 relay 115 230 Vac 2
48. see parameter FM or estimated The estimate of the glass temperature probe reading is performed internally when ambient temperature SA outlet temperature Sm and intake temperature Sr are available and depends on parameters rHA rHb and rHS Parameters rHo rHd and rHL determine the modulating output Par Description Def Min Max UoM THA Coe icient A for glass temperature probe 2 20 20 ecrr estimate Hb Coe icient B for glass temperature probe 22 0 100 7 estimate rHS Virtual probe composition for glass tempe 20 0 100 rature probe estimate 0 outlet probe Sm 100 intake probe Sr rHo Offset for anti sweat heater modulation 2 0 20 0 20 0 C F rHd Differential for anti sweat heater modula 0 0 0 20 0 C F tion rHL Type of PWM output load for anti sweat 0 0 1 heater modulation 0 resistive 1 inductive Tab 6 l If one of the probes is not available SA or either Sm or Sr only fixed activation control will be possible based on parameters rHu and rHt Outputs Configurable outputs not PWM1 PWM2 relays 0 to 10V The output used by default is output PWM2 terminal 19 however this can be changed to other analogue outputs using VPM The actuator can be selected between anti sweat heaters or fan with inductive motor using parameter rHL If the load is resistive rHL 0 the period is fixed at 24 s and the ON time depends on
49. shielded cable AWG20 power supply rx tx gnd LAN connection up to 100 m total with shielded cable AWG20 rx tx gnd Serial communication master only RS485 CAREL and Modbus protocols auto recognized 19200 bps 8 data bits no parity 2 stop bits Programming key available on all models 67 MPXPRO 0300055EN rel 1 3 07 03 13 CAREL The MPXPRO range fitted with the standard CAREL NTC probes model NTCO15WFO00 NTCO30HFO1 and NTCO15HPO0 is compliant with standard EN 13485 on thermometers for measuring the air and product temperature for the transport storage and distribution of chilled frozen deep frozen quick frozen food and ice cream Designation of the instrument EN13485 air S 1 50T90 C The standard CAREL NTC probe is identifiable by the printed laser code on WF HF models or the code 103AT 1 1 on HP models both visible on the sensor part EN13485 2003 Tab 10 a 10 1 Cleaning the terminal When cleaning the terminal do not use ethyl alcohol hydrocarbons petrol ammonia and derivatives Use neutral detergents and water 10 2 Purchase codes code description MX10MOOEI11 PXPRO light with RS485 e RTC Master 5
50. shows Slave controller 2 selected Fig 3 1 CAREL 3 6 Copy parameters from Master to Slave Upload All the parameters with upload attribute can be uploaded from a aster controller to the Slave controllers in the subnetwork The upload attribute can only be set for the parameters using the VPM program Visual Parameter Manager This procedure can be used instead of the programming key with the advantage of being able to update all the Slave boards in the subnetwork at the same time without powering down he controllers and without overwriting the parameters that should not be modified such as the serial address the clock parameters etc rather han having to repeat the procedure individually for each board with the programming key Procedure 1 press Prg mute and Set together for more than 5 seconds if there are active alarms the buzzer is muted the display shows the number 0 flashing 2 press UP or DOWN and enter the PASSWORD 66 Confirm by selecting Set 3 press UP or DOWN to select the Slave controller to be programmed Confirm by selecting Set Selecting ALL programs all the Slave controllers in the network 4 during the programming procedure the terminal display shows the normal display alternating with the message uPL and the spanner icon comes on 5 once the programming procedure is complete the message uPL disappears and the spanner icon goes off In the event of errors the message uPX is displaye
51. solenoid output may cause the activation of the fan outputs depending on the configuration of the fan parameters see configuration parameters FO and F2 Commands area override digital analogue outputs and digital inputs This section can be used to override all the outputs on the MPXPRO both digital and analogue as well as the digital inputs The structure is similar to the display of the probe readings there are 3 submenus directly accessible by pressing the 3 buttons Q Q Q CMP Solenoid compressor___ PF__ Position steps EEV __ di1 Dig input 1 dEF_ Defrost PPU Position EEV di2 Dig input 2 FAn_ Evaporator fans FSC Modulating fans di3 Dig input 3 Anti sweat heater ma LiG Light rA output di4 Dig input 4 AU AUX di5 Dig input 5 ALM Alarm dF2_ Defrost aux SSu Suction valve ESu_ Equalizing valve Navigation inside the menus is the same as on any user terminal Pressing any of the 3 buttons enters one of the menus Up or Down scrolls the variables pressing Set displays the value of the selected variable and changing the value using Up or Down overrides the value When scrolling the menus the display shows which variable is currently virtualised by switching on the spanner icon The override of any variable can be disabled individually by briefly pressing 1 sec the Restore ALL button corresponding to the specif
52. technical PE E E IRTRMPX000 ae P leaflets 050000135 S E 7 2 i Pressure probe connection J i b 1s i y se only one pressure probe Z Connect with CAREL cable A E E E se 5 1 SPKC003310 or SPKC005310 EA TES E connection with E 1 tt terminal color i 28 5Vde Black is T OT 29 S7 D14 White DI3 GND Di4 5Vdc CS E E ee naa See 30 GND Green meee 20 29 28 al aie aaa i ate SAR aS Bb a ae er oe EARN gt ics 2 s77 t 31 S6 D13 White Green Black eg Dopo wall Whitey J 1 2s 1 A ite BEGER an pale CAREL electronic pressure probe 5282 5 J Range Range E E E A CARELcode barg psig Probe ref 138 lt lt on BAI min max min max i ZEB E j i 0053R0 _ l 10 42 l 15 60 2CP5 52 STEE a i 0013R0 1 0 93 15 135 2CP5 46 353 i 0043R0 loo 173 lo 250 52CP36 01 Sa rae yaa a eta are Tene 2CP5 66 i E ET 1 8s 9 S8bssse og 0033R0 0 0 345 500 _ 2CP5 47 T O0B6RO 0 0 145 0 650 2CP50 1 BGS 001150 1 93 135 1 EF 004150 0 173 250 I bee baa Ei 1 003150 0 345 500 AC 230V 00B150 0 145 0 650 ee ON 00G150 0 160 0 870 installation without capillary tubing possible Fig 2 0 15 MPXPRO 0300055EN rel 1 3 07 03 13 2 9 Installation For installation proceed as follows with reference to
53. the related Slaves observe the Master controller compressor management times This operating mode is highlighted on the Master user interface by the compressor icon on steady the Slave controllers ignore the Master control mode and do not show the compressor icon flashing when the compressor is off If a Slave activates duty setting mode due to lack of communication with the Master the Slave manages the display on the user interface as normal Continuous cycle parameter cc Continuous cycle is a function used to keep the refrigeration cycle active continuously for a settable duration irrespective of the temperature inside the unit This may be useful when requiring a rapid decrease in the temperature even below the set point The activation of the low temperature alarm when exceeding the threshold AL or AL2 can be delayed by setting parameter c6 Par Description Def Min Max UoM cc Running time in continuous cycle 0 15 hour 0 disabled c6 Low temperature alarm bypass time after 60 0 240 min continuous cycle Tab 6 v The continuous cycle is activated by pressing UP and DOWN for more than 5 s from the supervisor or via digital input When the continuous cycle is running the iconis displayed e the compressor solenoid valve output and electronic valve control are activated and the corresponding icon is shown on the display the low temperature alarm with threshold AL is enabled
54. the setting of parameter A9 only settable on he Master A physical input on the Master can be associated with the virtual digital input on the Master to be propagated to the Slaves This is some using a parameter either A4 A5 A10 A11 or A12 based on the setting of A9 set on the Master and parameter A8 set on the Slave See he advanced parameters explained in paragraph 6 2 Note if needed parameter A8 can have different settings on the Slaves so as to activate different functions The table below lists the various functions that can be activated by digital input when closing or opening the corresponding contact Digital inputs S4 D11 S55 D12 Parameter A4 A5 S6 D13 A10 S7 D14 DI5 A11 A12 Functions of the digital inputs Parameters A4 A5 A10 A11 A12 Contact Selection e _ N open closed 0 input not active 1 immediate external alarm active not active 2 delayed external alarm active not active 3 enable defrost not enabled enabled 4 defrost call not active active 5 door switch door open door closed 6 remote ON OFF OFF ON 7 curtain switch light day status night status 8 start stop continuous cycle not active active 9 light sensor Tab 5 f 1 Immediate external alarm Activation of the alarm causes message lA shown on the display and alarm icon triangle flashing activation of the buzzer to co
55. to Pdd refrig pump hotgas drip post drip refrig down dd Fd ON SV CMP OFF ON EEV OFF ON FAN OFF ON DEF OFF Pdd Fig 5 1 Key t Time SV CP Solenoid Compressor FAN Fan EEV Electronic expansion valve DEF Defrost Pdd Valve position maintenance time after defrost drip dripping post drip post dripping The pump down phase is the period in which the evaporator is emptied of liquid refrigerant and can be disabled by setting dH1 0 See the chapter on Advanced functions The operation of the fan during the Pump down and Hot gas phases depends on parameters F2 and F3 During the dripping and post dripping phases it is always off 37 3 Multiplexed hot gas defrost d0 5 6 duty cycle The duty cycle refers to the default values of parameters F2 and F3 The valve can be opened to the initial value set for cP1 for a period equal to Pdd refrig pump hotgas drip post drip refrig down dd Fd SV EEV SSV HGSV ESV FAN Fig 5 m Key t Time SV Solenoid FAN Fan EEV Electronic expansion valve SSV Suction valve HGSV Hot gas valve a Valve position maintenance time ESV Equalizing valve Pdd after defrost drip dripping post drip post dripping Example The following figure shows an installation with an MPXPRO Master controller and an MPXPRO Slave controller highlighting the hot gas intake and equalizing valves that are activated in the cycle
56. to empty the evaporator before completely closing the circuit 6 6 Compressor MPXPRO features the following compressor protection parameters Par Description Def Min Max UoM cO Delay enable compressor and evaporator 0 0 240 min ans on power up cl inimum time between successive starts 0 0 15 min c2 inimum OFF time 0 0 15 min eS inimum ON time 0 0 15 min d9 Defrost priority over compressor protection 1 0 1 imes 0 protection times observed protection times not observed Tab 6 y cO is used to delay the start of control when the device is powered up This is useful in the event of power failures so that the controllers in the network don t all start at the same time avoiding potential problems of electrical overload In models with Carel electronic expansion valve and ultracap technology this parameter must be set to a value greater than 2 e cl sets the minimum time between two successive starts of the compressor irrespective of the request This parameter can be used to limit the maximum number of starts per hour c2 sets the minimum compressor off time The compressor is not started again until the minimum time set has elapsed e c3 sets the minimum compressor running time d9 disables the compressor protection times when defrosting useful for hot gas defrosts d9 Q the protection times are observed d9 1 the protection times are not observed the defrost
57. to open the device in any way other than described in the manual e donot drop hit or shake the device as the internal circuits and mechanisms may be irreparably damaged e do not use corrosive chemicals solvents or aggressive detergents to clean the device e do not use the product for applications other than those specified in the technical manual All of the above suggestions likewise apply to the controllers serial boards programming keys or any other accessory in the CAREL product portfolio CAREL adopts a policy of continual development Consequently CAREL reserves the right to make changes and improvements to any produc described in this document without prior warning The technical specifications shown in the manual may be changed withou prior warning The liability of CAREL in relation to its products is specified in the CAREL genera contract conditions available on the website www carel com and or by specific agreements with customers specifically to the extent where allowed by applicable legislation in no case will CAREL its employees or subsidiaries be liable for any lost earnings or sales losses of data and information costs o replacement goods or services damage to things or people downtime or any direct indirect incidental actual punitive exemplary special or consequentia damage of any kind whatsoever whether contractual extra contractual or due to negligence or any other liabilities deriving from t
58. valve management A heater can be activated to perform a heater defrost on the main and auxiliary evaporator Fig 5 d Key E Evaporator with electric defrost SV Solenoid valve vV Thermostatic expansion valve MPXPRO can manage defrosts with one or two outputs and one or two end defrost probes The table below summarises the possible cases Defrost Evaporator Control outputs probes 1 1 normal 2 1 defrost managed on two outputs with reference to the same evaporator probe defrost managed on the same output with 1 2 reference to two evaporator probes minimum evaporation temperature defrost managed independently on the two 2 2 ears evaporator circuits Tab 5 k Par Description Def Min Max UoM Sd1 Defrost probe a gt C F Sd2 Secondary evaporator defrost probe E CPF Tab 5 1 Evaporator fans This configuration involves using the auxiliary output for the evaporator fans the activation deactivation of the evaporator fans is signalled by the evaporator fan icon on the display See paragraphs 5 7 and 6 8 Anti sweat heaters This configuration involves using the auxiliary output to demist the display cases control with fixed activation see paragraph 6 3 MPXPRO 0300055EN rel 1 3 07 03 13 CAREL Suction and equalizing valve This configuration involves using the auxiliary output as a suction or balancing valve for hot gas defrosts See
59. wear Precision of the measurement is in any case limited by the tolerance of both the controller and the probe Night time operation During night time operation the curtain on the display case is closed and consequently less cold inside air is mixed with warm outside air The thermal load decreases The temperature of the air that cools the produce is near the outlet temperature and therefore to avoid excessively low temperatures and reduce energy consumption the set point needs to be increased at night by setting parameter r4 Parameter r6 can then be used to possible the virtual probe Sv or intake probe Sr as the control probe Naturally the change to night time operation must be signalled externally This is usually done using the curtain switch set with the parameters relating to the digital inputs A4 A5 A10 A11 A12 signalling that the curtain has been lowered or by setting the time bands parameters tS1 to tS8 and tE1 to tE8 from the supervisor or from the Master controller via the Master Slave network Fot time bands setting see par 3 4 Par Description Def Min Max UoM r4 Automatic night time set point variation 0 50 ee r6 Probe for night time control 0 0 1 0 virtual probe Sv 1 intake probe Sr tS1 to 8 Start time band 1 to 8 day tEl to8 End time band 1 to 8 day Tab 5 0 35 Variable Daytime control Nighttime control r6 0
60. 0 0 240 0 S 0 function disabled P9 LowSH alarm delay 600 0 999 s 0 alarm disabled Tab 6 ax ON LowSH OFF ALARM OFF Key SH Superheat P7 LowSH threshold LowSH Low superheat protection P9 Alarm delay ALARM Alarm t time MOP Maximum evaporation pressure When starting or restarting an installation the compressors may not be able to satisfy the simultaneous refrigeration requirements of all the refrigeration utilities in the installation This may cause an excessive increase in the evaporation pressure and consequently the corresponding saturated temperature When the evaporation pressure expressed in degrees saturated rises above the threshold after a certain settable time the system enters MOP protection status PID superheat control is stopped and the controller starts gradually closing the valve with an integration action to return the evaporation pressure below the threshold The protection function has been designed to allow a gradual return to normal operating conditions that is when the critical conditions have ended the controller temporarily operates with a higher superheat set point until the function is automatically reset A electronic valve the solenoid valve is also closed even if this is a network solenoid valve when enabled The alarm signal with the message MOP on the display is delayed from the activation of the Important if this action causes the complete closing of the
61. 0 11 pressure temperature probe See Fd Tab 4 g U6 L6 Maximum minimum value of probe S6 Parameters L6 and U6 are used to adjust the maximum and minimum limits corresponding to the range of measurement for the probe connected to input S6 Par Description Def Min Max UoM U6 Maximum value of probe 6 9 3 L6 100 barg RH L6 Minimum value of probe 6 1 0 100 U6 barg RH Tab 4 h P1 Type of expansion valve MPXPRO can control the CAREL EV electronic valve or PWM valves depending on the model code Par Description Def Min Max UoM P1 Electronic valve 0 0 2 0 not used 1 PWM valve 2 CAREL E 7V valve Tab 4 i PH Type of refrigerant The type of refrigerant is essential for calculating the superheat In addition it is used to calculate the evaporation and condensing temperature based on the pressure probe reading Below is the table of refrigerants allowed and their compatibility with the CAREL E V valve Par Description Def Min Max PH _ Type of refrigerant 3 1 22 1 R22 2 R134a 3 R404A 4 R407C 5 R410A 6 R507A 7 R290 8 R600 9 R600a 0 R717 1 R744 2 R728 3 R1270 4 R417A 5 R422D 6 R413A 7 R422A 8 R423A 9 R407A 20 R427A 21 R245Fa 22 R407F Tab 4j MPXPRO 0300055EN rel 1 3 07 03 13 In Type of unit Parameter In assigns the controller the function of
62. 02 terminals and connections Analog 0 to 10 Vdc MX20PA1002 A Analog output 1 reinforced insulation with reference ARO OE SAREE i _ to its internal power supply Fig 2 1 Terminal 40 Not used Description Control signal for modulating actuators Maximum a Oto 10 Vdc output error 2 f s maximum load 2 2 KQ 42 GND Tab 2 f Note the input of the 0 to 10 Vdc modulating actuator load must have reinforced insulation based on its internal power supply MPXPRO 0300055EN rel 1 3 07 03 13 2 6 Functional diagrams The MPXPRO controllers are systems that manage refrigeration units for example one or a series of multiplexed showcases These systems are made up of control boards connected together in Master Slave mode each Master board can manage up to 5 Slaves The functional diagrams below show some examples of typical applications 1 Stand alone configuration and optional cards available E MX20P48500 o0 only for MX20S Aaa IR00XG 300 IROOUG 300 MX20PA1002 Fig 2 For the electrical connections see the general connection diagram in par 28 The Master controller can be supplied without the driver board MX30M00E00 with the driver board for E2V valve MX30 25E00 or with PWM driver board MX30 24E00 Available options 0 to 10 Vdc expansion board MX3OPA1002 If in
63. 0730 1 6 4 A N O 6 4 A N C 2 2 A C O 33 S4 D11 e Multifunction digital input 4 C UL 6A res 240Vac N O N C 34 GND 5 1 2Hp 240Vac N O _1 6 Hp 120Vac N O 35 S3 6 O Relay 2 EN60730 1 10 10 A N O Jonly models 36 5 NTC PTC PT1000 NTCL243 probes 7 Cc UL 10A res 1Hp 240 120 Vac N O _ with 5 relays 37 S1 2 Relay 3 EN60730 1 10 2 A N O 0 C UL 10A res 240Vac 1 ot used Note 2 O Relay 4 EN60730 1 6 4 A N O only models UL 6A res 240Vac 1 2Hp 240Vac Depending on the model the main board may have two open 3 C with 5 relays j 7 A g eee SODANO SARNE collector PWM analogue outputs for connecting 5 C en re een S i OMANE 1 PWM1 phase cuttingcontrollers e g MCHRTF forinductiveloads 6 C 1 2Hp 240Vac N O 1 6Hp 120Vac N O e g evaporator fans with inductive motors for optically isolated 7 12V Power supply control 8 PWM1 Open collector output PWM1 12Vdc 20mA MAX 2 PWM2 SSR relay for the anti sweat heaters on the display cases 9 PWM2 Open collector output PWM2 12 Vdc 20MA MAX The devices with 4 to 20 mA or 0 to 10 Vdc output connected to input 20 Ledia Connection to R5485 network supervisory CAREL S7 cannot be powered directly from the MPXPRO They therefore 21 x Rx and Modbus protocol for Master controller only enuie anaporoniiate extemal oowersunni 22 GND use shielded cable q pprop p PPI 23 M S N Tx Rx Connection to Master Slave tLAN Master Slave 26 GND Network Use shielded cable 24 Tx
64. 1 3 07 03 13 18 CAREL CAREL 3 USER INTERFACE The front panel of the user terminal IROOUG includes the display and the keypad featuring 4 buttons that pressed alone or in combination are used to program the controller The remote display IROOXG is only used to show the values of system variables 3 1 User terminal and remote display The display shows measurements in the range 50 and 150 C according to the type of probe used The measurement is displayed with resolution to one tenth between 19 9 and 19 9 C For 0 to 5 V ratiometric and active 0 to 10 V or 4 to 20 mA probes the unit of measure is defined by the type of probe used The decimal point can be disabled by setting a parameter 6 User terminal Remote display SII SISI l MPXPRO CAREL MPXPRO CAREL Fig 3 a Fig 3 b icon Function Icon function statuse Not OFF FLASH sr Active Not active Request Flashes when activation is delayed or stopped by protection times A Evaporator fans Active Not active Request Flashes when activation is prevented due to external disabling or procedures in progress rg Defrost Active Not active Request Flashes when activation is prevented due to external disabling or procedures in progress g g AUX Auxiliary output Active Not active Comes on with activation of the auxiliary output selected as local or network auxiliary Pre activation Al of the delayed
65. 2 1 MX30PST H U O a MX30PST H U Tight screw and nut after installing connector cable and EV CAREL E2VCABS any GND Terminal i O donotconnectto Green 84 Brown Red_83 Yellow Black 82 White 81 Shield 80 Earth t without solenoid Valve cable lenght without solenoid Unique correct connection view no other possible L lt 10m AWG22 connections E E2VCON not suitable 5 for refrigeration a L lt 30m AWG20 application 3 s L lt 50m AWG18 For further information please refere to the EEV system guide code 030220810 available in the web site www carel com in the literature section Fig 2 9 Terminal Description 73 Oto 10Vdc output Control signal for modulating actuators 4 55 mA MAX Maximum error 2 f s maximum load 2 2 KQ 74 _ GND 75 _ Functional earth 80 _ Shield ae Connection to CAREL E V valve with shielded cable 82___ Yellow black 83 Brown red Fe neeue 84 Green Tab 2 d Important To connect the valve use a CAREL shielded cable code E2VCABS 00 AWG22 or an alternative suitably sized 4 wire shielded cable reverse valve or valve size gt E3V45 gt solenoid required with AWG22 shielded cable direct valve and valve size lt E3V45 gt if the solenoid is installed AWG22 shielded cable if the solenoid is not installed for the size of the cables see the table to
66. 485 e RTC Master 5 relay 115 230 Vac E2V PWM 2 PWM 0 to 10 Vdc NTC MX30M24HO01 Pt1000 multiple package 20 pcs no connectors kit X30524H001 PXPRO complete controller with EEV management Slave 5 relay 115 230 Vac E2V PWM 2 PWM 0 to 10 Vdc NTC Pt1000 multiple package 20 pcs no connectors kit IROOUG6300 Terminal green LEDs keypad IROOUGC300 Terminal green LEDs keypad buzzer commissioning port IR IROOXG6300 Display green LEDs IROOXGC300 Display green LEDs keypad buzzer commissioning port IR IROOXGP300 Resinated display Green LED IP65 cavo I 5 m MX3O0PSTHO2 MPXPRO option E2V stepper amp ultracap module 0 to 10 Vdc connectors kit with horizontal screws MX3O0PSTHO3 MPXPRO option E2V stepper amp ultracap module 0 to 10 Vdc connectors kit with vertical screws MX30PPWMO2 MPXPRO option EEV PWM 0 to 10 Vdc module connectors kit with horizontal screws MX30PPWMO3 MPXPRO option EEV PWM 0 to 10 Vdc module connectors kit with vertical screws MX3O0PA1002 MPXPRO option analog module 0 to 10 V connectors kit MX30P48500 MPXPRO option RS485 RTC not necessary on master codes MXOPZKEYAO Programming key MPXPRO 230 Vac IRTRMPX000 IR remote control for MPXPRO CVSTDUMORO USB RS485 converter IROPZTLNOO Commissioning interface USB tLAN MX3COB5RO Silk screened connectors kit for 5 relay main board with horizontal screws MX3COB3RO Silk screened connectors kit for 3 relay main board with horizontal screws MX3COSTHO
67. 9 The last error saved can be read on parameter HSO see the table of parameters Example display after HI error MPXPRO CAREL MPXPRO CAREL Fig 9 a Note e to deactivate the buzzer press Prg mute e to cancel an alarm signal with manual reset once the cause has been resolved press Prg mute and UP together for 5 seconds The message rES will be shown as confirmation Procedure press Prg mute and Set together for 5 seconds enter the password 44 e press Set to access a submenu where the UP and DOWN buttons are used to scroll the various alarms HSO to HS9 e select an alarm and press Set to display the code hour minutes and duration e from any of the child parameters pressing Prg mute returns to the parent parameter HSx press Prg mute for 5 seconds to return to the standard display Example HI gt h17 gt m23 gt 65 indicates that alarm HI high temperature alarm was activated at 17 23 and lasted 65 minutes Note alternatively access the type A parameters and select category HSt alarm log See the table of parameters 9 4 HACCP alarms and display HACCP Hazard Analysis and Critical Control Point HACCP allows control of the operating temperature recording any anomalies due to power failures or an increase in the temperature due to other causes breakages extreme operating conditions user errors etc Two types of HACCP
68. Aux w Scroll Defrost ON OFF Used to switch the instrument to the OFF logical status in this status all the control functions are deactivated except for communication with the supervisor the Master Slave network and management of probe alarms Status area display instrument status wre Temp Probes eed E V Probes acc ACC Probes Status Used for direct and immediate access to the values read by the probes on the MPXPRO and the main internal variables used for the various control functions The three buttons access three different menus The menus are navigated in the same way as on a traditional user terminal to enter exit the menu for the displaying the temperature probes to enter exit the menu for the displaying the Q probes status relating the electronic expansion valve Q to enter exit the menu for the displaying the probes status relating to the anti sweat function Below is a list of all the variables with corresponding code displayed in the various menus SM Outlet probe temp SH_ Superheat dPt_ Dewpoint Sd1 Defrost probe temp P3_ Superheat set point _ SA_ Ambient temp Sr_ Intake probe temp PPU Position EEV SU Ambient humidity Su Virtual probe temp PF_ Position steps EEV_ SUt Glass probe temp SG Control probe temp tEu Saturated evapora ap Anti sweat heater tion temperature PWM output st Set point ics Superheated ga
69. CKARD connector single package IP67 cable I m with co moulded PACKARD connector for SPKT E2V BSFOO EEV with 12 mm copper fittings sizes from 9 to 24 E2VCABS600 __ Shielded cable with connector for EEV l 6 m Tab 10 c 69 MPXPRO 0300055EN rel 1 3 07 03 13 CAREL Note MPXPRO 0300055EN rel 1 3 07 03 13 70 CAREL CAREL INDUSTRIES Headquarters Via dell Industria 11 35020 Brugine Padova Italy Tel 39 049 9716611 Fax 39 049 9716600 e mail carel carel com www carel com Agenzia Agency CAREL reserves the right to modify or change its products without prior warning MPXPRO 0300055EN rel 1 3 07 03 13
70. F PWM modulating fans Lf heater MX30P48500 only for slave models MX30S MX30 H AC 115 230 V Expansion board 200 mA max 0 to10 Vdc Analog output MX3OPA10 PWM driver MX3OPPWM BBRA F V driver MX3OPSTP Mounted on MX30S SS gt 6 4 AN 0 10 10 AN 0O 10 2 AN O 6 4 AN O 6 4 AN O EN60730 1 6 4 A N C a For more details please refer to the technical leaflets MX30P485 OOOO PROG KEY MXOPZKEYAO with rel 2 x IROPZKEYAO with rel 1 x To be used only with control switch off no Power Supply and disconnected from the RS485 supervisory serial line 6 4 A N C CLOCK and SERIAL INT Maximum currents with removable vertical connectors cod MX30 C I O Default connection Only Master units to be connected on RS485 Supervisor RS485 Master Slave network max cable lenght 100 m with a section not less then AWG20 tLAN T NTE NTE NTE NTE RATIOMETRIC Shield w wW w za Pe 2 2s ae o Ea S a z e l l zo ES m ag ees Terminal user interface max cable lenght 100 m with a section not less then AWG20 Su Su 38 33 Pe E Se aoe ee bese 8 abe IR U IR X S 8 2 ES ESQ tLAN s E 3 2 Ene z praf 3 a Ee go Possible connection 2 ion VL 25 GND 26 j remote infrared Connection vL 25 26 see the
71. GO0 The glass temperature probe is connected at the coldest point of the glass on the showcase so as to optimise operation of the anti sweat device heaters or fans See instruction sheet 050002005 e light sensor PSOPZLHTOO This must be installed where it can see the ights in the supermarket and not the showcase so as to automate day night changeover In the showcase it will be located in the darkest part of the case at the top or the bottom based on the position of the lights Calibration of the night day threshold parameter H12 based on the luminance in the place of installation is the installer s responsibility e For further information see the instruction sheets that can be downloaded even prior to purchase from www carel com a Assign probe functions parameters FA Fb Fc Par Description Def Min Max UoM FA_ Assign outlet temperature probe Sm 1 0 11 0 Funct disab 6 Probe S6 1 Probe S1 7 Probe S7 2 Probe S2 8 Serial probe S8 3 Probe S3 9 Serial probe S9 4 Probe S4 10 Serial probe 10 5 Probe S5 11 Serial probe 11 Fb_ Assign defrost temperature probe Sd See 2 0 11 FA Fc_ Assign intake temperature probe Sr See 3 0 11 FA Sm FA Sr Fc Regulation probes parameters Fig 5 a CAREL MPXPRO inside the showcase or cold room can use temperature probes to measure e t
72. In the event of a temperature probe error MPXPRO uses the other probe available and adjusts the set point according to the setting of parameter ro In the event of errors on both probes MPXPRO switches to Duty setting mode The controller is activated at regular intervals operating for a time equal to the value set for the duty setting parameter c4 and off for a fixed time of 15 minutes Par Description Def Min Max UoM c4 ON time for duty setting operation Toff 0 0 100 min 15 minutes fixed 0 compressor valve always OFF 100 compressor valve always ON Tab 6 t Key R Control t Time c4 ON time With Duty setting active during the ON time the compressor icon remains on while it flashes during the OFF time Important during duty setting the compressor protection times are not observed The table below describes the possible fault situations relating to the control probes and the function that is activated Type of system Control probe fault Control Parameter Sm Sr 1 probe e Duty setting c4 e Duty setting c4 e control on Sr ro 2 probes e control on Sm ro o e Duty setting c4 Tab 6 u ro must be gt 0 MPXPRO 0300055EN rel 1 3 07 03 13 Duty setting with shared control status For the description of shared control status see paragraph 5 1 The activation of the duty setting mode on the Master controller implies that all
73. MPXPRO CARE L Electronic controller Enc User manual LEGGI E CONSERVA QUESTE ISTRUZIONI 4 READ AND SAVE THESE INSTRUCTIONS NO POWER ny esm CABLES Z TOGETHER READ CAREFULLY IN THE TEXT Integrated Control Solutions amp Energy Savings CAREL WARNINGS CAREL bases the development of its products on decades of experience in HVAC on the continuous investments in technological innovations to products procedures and strict quality processes with in circuit and functional testing on 100 of its products and on the most innovative production technology available on the market CAREL and its subsidiaries nonetheless cannot guarantee that all the aspects of the product and the software included with the product respond to the requirements of the fina application despite the product being developed according to start of the art techniques The customer manufacturer developer or installer of the fina equipment accepts all liability and risk relating to the configuration of the product in order to reach the expected results in relation to the specific fina installation and or equipment CAREL may based on specific agreements acts as a consultant for the positive commissioning of the final unit application however in no case does it accept liability for the correct operation of the fina equipment system The CAREL product is a state of the art product whose operation is specified in the technical documentat
74. Master or Slave To convert a Master controller to a Slave set parameter In 0 To convert a Slave controller to Master install the RTC and RS485 interface card MX30P48500 2 set parameter In 1 Par Description Def Min Max UoM n Type of unit 0 0 1 0 Slave 1 Master Tab 4 k Sn Number of Slaves in the local network This parameter tells the Master controller how many Slave controllers it has to manage in the local network If Sn 0 it is a stand alone display case The maximum number of Slave controllers in a subnetwork is 5 On Slave controllers the parameter must be left at 0 Par Description Def Min Max UoM Sn Number of Slaves in the local network 0 0 5 Z 0 no Slave Tab 4 1 HO Serial or Master Slave network address On a Master controller this represents the address of the controller in the CAREL or Modbus supervisory network On a Slave controller it represents the address of the controller in the local network 1 to 5 In this case the address in the CAREL or Modbus supervisory network will be the address of the Master added to the address of the Slave Par Description Def Min Max UoM HO Serial or Master Slave network address 199 0 199 Tab 4 m A Important if more than one Master with their own local networks are connected to a supervisor network the address set for each Master must consider the number o
75. Min Max UoM Htc Clock fitted 0 0 1 0 not fitted Tab 7 j Indicates whether or not the real time clock is fitted e Htc 0 clock not fitted Htc 1 clock fitted If the parameter is set to 0 and the operator physically installs the optional real time clock card MX30P48500 with the controller off when restarting the parameter is automatically set to 1 If set to 1 when the clock is not fitted the Etc alarm is activated MPXPRO 0300055EN rel 1 3 07 03 13 56 CAREL 8 TABLE OF PARAMETERS Parameter levels F frequent C configuration password 22 A advanced password 33 Par Description Pag Def Min Max UoM Type Icon Pro PROBES 2 Analogue probe measurement stability 57 4 1 15 A 4 Virtual probe composition 34 0 0 100 C A A 0 Outlet probe Sm 100 Intake probe Sr 5 Temperature unit of measure 57 0 0 1 3 A A A v 6 Display decimal point 57 0 0 1 A A 0 Enabled 1 Disabled rHS Virtual probe composition for glass temperature probe estimate 43 20 0 100 NV A 0 Outlet probe Sm 100 Intake probe Sr t Display signals alarms on remote display 57 0 0 1 a A A 0 Disabled 1 Enabled t Display on user terminal 57 12 0 14 7 C A 0 User terminal disabled 8 Serial probe 8 1 Probe 1 9 Serial probe 9 2 Probe 2 10 Serial probe 10 3 Probe 3 11 Serial probe 11 4 Probe
76. Minimum value Maximum value L6 U6 L7 U7 Tab 5 b MPXPRO can adjust the values read by the probes In particular c1 to c7 are used to increase or decrease the physical values read by the probes if configured as temperature probes Parameter cE on the other hand corrects the value of the saturated evaporation temperature calculated directly based on the evaporation pressure The serial probes cannot be calibrated while the probes shared with the Master such as the pressure probe are calibrated by the Master To assign the functions to each physical or serial probe set parameters FA Fb Fn See the table of parameters Probe Parameter Probe Parameter Outlet FA Auxiliary temperature 1 FG Defros Fb Auxiliary temperature 2 FH Intake Fe Ambient temperature FI Superheated gas zi temperature tGS Fd Ambient humidity FL zaturated evaporation FE Glass temperature FM temperature tEu Defrost probe 2 FF Dewpoint Fn Tab 5 c One single pressure probe can be shared across the Master Slave network This must be connected to the Master On the Master simply correctly configure the using the parameters FE U6 L6 while on the Slaves set FE 0 function disabled In this way the Slaves automatically search for the pressure value shared by the Master and used for calculating the local superheat This is used to save on the installation costs of a pressure probe fo
77. O Alarm 0 to 9 Duration 68 0 0 999 min AQ HcP HACCP alarms HtO HACCP alarms present 68 0 0 1 NV HAn Number of type HA alarms 68 0 0 15 A HACCP HA to HA2 Type HA HACCP alarms activated press Set 68 A HACCP J Alarm 1 to 3 Year 68 0 0 99 year j HACCP m Alarm 1 to 3 Month 68 0 1 12 month a HACCP d_ Alarm 1 to 3 Day of the month 68 0 1 31 day HACCP h Alarm 1 to 3 Hours 68 0 0 23 hour HACCP n Alarm 1 to 3 Minutes 68 0 0 59 min HACCP Alarm 1 to 3 Duration 68 0 0 240 min HACCP HFn Number of type HF alarms 68 0 0 15 A HACCP HF to HF2 Type HF HACCP alarms activated press Set 68 A HACCP y Alarm 1 to 3 Year 68 0 0 99 year HACCP ie Alarm 1 to 3 Month 68 0 1 12 month HACCP d_ Alarm 1 to 3 Day of the month 68 0 1 31 day HACCP h Alarm 1 to 3 Hours 68 0 0 23 hour HACCP n Alarm 1 to 3 Minutes 68 0 0 59 min HACCP Alarm 1 to 3 Duration 68 0 0 240 min a HACCP Htd HACCP alarm delay 68 0 0 240 min A HACCP 0 monitoring disabled rtc Real Time Clock d1 to 8 Defrost 1 to 8 press Set 36 C O d Defrost 1 to 8 day 36 0 0 11 day i O 0 event disabled 9 Monday to Saturday 1 to 7 Monday to Sunday 10 Saturday to Sunday 8 Monday to Friday 11 every day h Defrost 1 to 8 hours 36 0 0 23 hour nn Defrost 1 to 8 minutes 36 0 0 59 min O P_ Defrost 1 to 8 enable Power defrost 36 0 0 1 0 normal 1 Power defrost S1to8 Start ti
78. PECIFICATIONS GT 3 5 Display Slave controller status from the Master user terminal 10 1 Cleaning the termminal cscssssssssssststsssssstststatatintssisetetetet 68 virtual console eninnnnnininnnninininenninnnnnnninannaie 22 10 2 Purchase COd S ss sssstustsustnstntvstesnstnsustestntnetesieteeees 68 3 6 Copy parameters from Master to Slave Upload sesssssssssesessssne 23 3 7 Maximum and minimum temperature monitoring Parameters 5 PtH CL siiin 23 3 8 Using the remote control aCCESSOFY essssssessesesesseseseasestsseetnseeeee 23 4 COMMISSIONING 26 AD Configu ON ionining 26 4 2 Recommended initial configuration essesessessssessseesesessestsseetnseeeee 26 4 3 Guided commissioning procedure user terminal remote display 27 A A Checks after COMMISSIONING sscsscssssseesssssesesssssesssssssssssessnsseessessee 29 5 BASIC FUNCTIONS 30 5 1 Probes analogue INputs sssssssssesssessusssessssseesssessessssessssseesnseseeen 30 52 Digital tM PUits esrsznina tisui a 32 DS Analogue ouu n scisasasuesscacctaacte n 33 5 Digtal OPUS ssi sinscacsiassccnsesdssancnsdclntsns ects sleckiesuschseschtinaesabttedSobn 33 Bb COMMU Ol Pa daar EENE E EE E EEE 34 56 DENOS Enonesa nhan 36 5 7 Evaporator famns scssssssssssesssscesssusssscessssusssssesssusssesessesnnsssseseunsesseeseuest 39 58 Electone VANE anssi 40 5 MPXPRO 0300055EN rel 1 3 07 03 13 CAREL 1 INTRODUCTION MPXPRO is an electronic controlle
79. PWM NTC Pt1000 connectors kit with vertical screws MX30S21HRO PXPRO complete controller Slave 5 relay 115 230 Vac 2 PWM NTC Pt1000 connectors kit with vertical screws MX30S31HRO PXPRO complete controller Slave 3 relay 115 230 Vac 2 PWM NTC Pt1000 connectors kit with vertical screws MX30M25HRO PXPRO complete controller with E2V management with RS485 e RTC Master 5 relay 115 230 Vac E2V Stepper amp Ultracap 2 PWM O to 10 Vdc NTC Pt1000 connectors kit with vertical screws MX30S25HRO PXPRO complete controller with E2V management Slave 5 relay 115 230 Vac E2V Stepper amp Ultracap 2 PWM 0 to 10 Vdc NTC Pt1000 connectors kit with vertical screws PXPRO complete controller with EEV management with RS485 e RTC Master 5 relay 115 230 Vac E2V PWM 2 PWM 0 to 10 Vdc NTC X30M24HRO liad Pt1000 connectors kit with vertical screws MX30S24HRO PXPRO complete controller with EEV management Slave 5 relay 115 230 Vac E2V PWM 2 PWM 0 to 10 Vdc NTC Pt1000 connectors kit with vertical screws X30M25H001 PXPRO complete controller with E2V management with RS485 e RTC Master 5 relay 115 230 Vac E2V Stepper amp Ultracap 2 PWM 0 to 10 Vdc NTC Pt1000 multiple package 20 pcs no connectors ki X30525H001 PXPRO complete controller with E2V management Slave 5 relay 115 230 Vac E2V Stepper amp Ultracap 2 PWM 0 to 10 Vdc NTC Pt1000 multiple package 20 pcs no connectors kit PXPRO complete controller with EEV management with RS
80. Rx 25 VL tLAN connection for user terminals and remote i mportant 6 GND display A p 26 GND e 7 DIS Multifunction digital input e The type of input connected to each probe in the same group can be 28 DC5V Multifunction analogue digital input configured by just one parameter For each group 1 S1 S2 S3 2 S4 S5 29 S7 D14 NTC PTC PT1000 NTCL243 probe 3 S6 4 S7 there is just one parameter that defines the type of input 30 GND Oto 5 Vdc ratiometric probe and consequently this must be the same for all the probes in the same Oto 10 Vdc analogue input group For group 2 S4 and S5 can be configured as probes yet operate 4to 20 mA analogue input as diaital inputs e Multifunction digital input g pas 38 DC5V Multifunction analogue digital input All the contacts should be galvanically insulated by adding further relays 30 GND NTC PTC PT1000 NTCL243 probe for each contact The digital inputs must not be connected in parallel 31 S6 DI3 0to5Vdc ratiometric probe otherwise the board may be damaged e Multifunction digital input MPXPRO 0300055EN rel 1 3 07 03 13 12 CAREL 2 3 E Vdriverexpansionboard MX30PSTP terminals and connections i za i The input of the load O to 10 Vdc must 7 GND 2 1 The input of the load Oto 10Vde must LSE E V Driver feature reinforced insulation with i 4 H reference to its internal power supply taa O tolovde 1 i Analogic vseeno output only for 1 1
81. a Master Slave network a series of functions can be coordinated such as defrosts network solenoid valve management sharing of the pressure probe and sharing of control status Example of application on vertical showcase SV opzionale Fig 1 b Key Sm Outlet probe Sr Intake probe Sd Defrost probe E evaporator SV Solenoid valve EEV electronic expansion valve Below is a description of the series of components and accessories in the MPXPRO range MPXPRO 0300055EN rel 1 3 07 03 13 CAREL Master board MX30M Fitted with clock RTC and RS485 card this can independently manage a refrigeration unit synchronise events over a LAN and connect to a CAREL or Modbus supervisory network Plastic spacers are provided for fitting the for electronic valve driver EEV expansion board or the 0 to 10 Vdc output expansion board Fig 1 c Slave board MX30S Without clock RTC and RS485 card these can manage a refrigeration unit without the supervisor and clock functions Slave boards can be converted into Master boards by fitting in place see photo the RTC and RS485 interface card MX30P48500 and setting a parameter In Plastic spacers are provided for fitting the EEV driver expansion board or the 0 to 10 Vdc output board Master Slave boards MX30 25HOO With 2 PWM outputs and E2V driver board with O to 10 Vdc ou
82. ale connector 7 16 20 UNF 2B PACKARD connector single package IP67 cable I m with co moulded PACKARD connector for SPKT E2V BSFOO EEV with 12 mm copper fittings sizes from 9 to 24 E2VCABS600 _ Shielded cable with connector for EEV 6 m MX30525H00 ia complete Slave controller 5 relays Stepper EEV 2 PWM 0 to 10 Vdc NTC PT1000 horizontal screw connec ROOXGC300 __ Display green LEDs keypad buzzer commissioning port IR showcase Slave 3 TCO OHPOO TC probe IP67 cable 50T50 C TCO OHFO1 TC probe IP67 cable m 50T90 C STRAP ON multiple package 10 pcs E2V BSFOO EEV with 12 mm copper fittings sizes from 9 to 24 E2VCABS600 _ Shielded cable with connector for EEV l 6 m MX30M2S5HOO PXPRO complete Master controller with EEV management including RS485 and RTC 5 relays Stepper EEV 2 PWM 0 to 10 Vdc NTC PT1000 horizontal screw connector kit ROOUGC300 __ Terminal green LEDs keypad 2 3 ITCO OHPOO TC probe IP67 cable 50T50 C TCO OHFO1 ITC probe IP67 cable m 50T90 C STRAP ON multiple package 10 pcs cold room Master only SPKTOO13RO Ratiometric pressure probes for MPXPRO ratiometric pressure transducer with 1 4 SAE steel female connector 7 16 20 UNF 2B PACKARD connector single package 0 to 5 Vdc 1 to 9 3 bar 0 to 150 psiA SPKC00 310 Ratiometric pressure probes for MPXPRO ratiometric pressure transducer with 1 4 SAE steel female connector 7 16 20 UNF 2B PA
83. alve opening steps supervisor 0 step SH Superheat gt K PPU Valve opening percentage tGS Superheated gas temperature ais tEu Saturated evaporation temperature CPE Tab 6 bd PF status variable that only displays solely from the supervisor the current position of the electronic valve calculated by the controller System malfunctions may cause this value to be different from the effective position of the valve Not used with PWM valves SH status variable that only displays of the superheat value calculated by MPXPRO and used to control of valve PPu status variable that only displays the electronic valve opening as a percentage for both stepper and PWM valves tGS status variable that only displays the evaporator outlet temperature read by the corresponding probe advanced parameter Fd tEu status variable that only displays the saturated evaporation temperature calculated by the corresponding evaporation pressure probe or read directly by the NTC probe advanced parameter FE MPXPRO 0300055EN rel 1 3 07 03 13 54 CAREL PWM valve modulation period parameter Po6 Description Def Min Max UoM PWM expansion valve Ton Toff period 6 1 20 S Tab 6 be Par Po6 This represents the modulation period in seconds for the PWM electronic expansion valve only DC AC The opening of the PWM valve performed based on the PID parameters refers to the period
84. an alarm occurs on a Slave the Master shows the signal nx alternating with the temperature display where x is the address of the Slave with the alarm x 1 to 5 If the Master has the AUX1 AUX2 or AUX3 relay configured as the alarm relay then the alarm relay on the Master is activated Par Description Def Min Max UoM Ar Signal alarms from Slave to Master 1 0 0 not enabled 1 enabled Tab 9 f MPXPRO 0300055EN rel 1 3 07 03 13 CAREL Hot gas safety procedure for Slave offline parameter Type HF alarms A13 The type HF HACCP alarm is generated following a power failure for an In a Master Slave network the multiplexed hot gas defrost is always extended time gt 1 minute if when power returns the temperature i read by probe set for parameter AA exceeds the AH high temperature synchronized by the Master The safety procedure switches the Slave OFF threshold HEn indicates th beroft HE al wied if it is offline no longer by the Master across the tLAN SAS ir ME gee reg E E S E Par Description Def Min Max UoM Par Description Def Min Max UoM A13 Hot gas safety procedure for Slave offline 0 0 1 HFn Number of type HF alarms 0 0 15 0 not enabled 1 enabled HF to HF2 Type HF HACCP alarms activated 7 J Tab 9 g press Set y Alarm 1 to 3 Year 0 0 99 y
85. by time 3 hot gas by time 4 heater by time with temp control 5 multiplexed hot gas by temperature 6 multiplexed hot gas by time d6 Display on terminals during defrost 0 2 gt 0 temperature alternating with dEF 1 freeze display 2 dEF Tab 5 5 Below is the trend of the defrost output based on the setting of parameter do DEF DEF DEF Key t Time Sd dtl End defrost temperature dP1 Maximum defrost duration Defrost probe DEF Defrost The heater defrost by time with temperature control d0 4 activates the defrost output only if the evaporator temperature Sd is less than the value of parameter dt1 and ends after the time defined by dP1 This function is useful for energy saving CAREL 1 Heater defrost d0 0 2 4 duty cycle The duty cycle refers to the default values of parameters F2 and F3 The valve can be opened to the initial value set for cP1 for a period equal to Pdd refrig pump res drip postdrip refrig down dd _ Fd ON SV CMP OFF ON EEV OFF ON FAN OFF ON DEF OFF Pdd Fig 5 k Key t Time SV CMP Solenoid compressor FAN Fan EEV Electronic expansion valve DEF Defrost Pdd al maintenance time after drip dripping post drip post dripping 2 Hot gas defrost d0 1 3 duty cycle The duty cycle refers to the default values of parameters F2 and F3 The valve can be opened to the initial value set for cP1 for a period equal
86. c address assignment in progress ccb Start continuous cycle call GCE End continuous cycle call dFb Start defrost call dFE End defrost call On z Switch ON OFF Switch OFF Reset alarms with manual reset rES Reset HACCP alarms Reset temperature monitoring AcE Change from PI to ON OFF control of anti sweat heaters Act Control of Slaves serving Master via tLAN uPL Upload procedure in progress uS_ Slave unit not configured Tab 9 a 9 2 Alarms There are two types of alarms system valve motor EEPROM communication HACCP high HI and HI2 and low LO and LO2 temperature alarms e control low superheat LowSH low evaporation pressure LOP high evaporation pressure MOP low suction temperature LSA he EE EF data memory alarms shutdown the controller The auxiliary digital outputs AUX1 relay 4 AUX2 relay 5 and AUX3 relay 2 can be configured to signal the alarm status normally open or normally closed See paragraph 5 4 The controller indicates alarms due to faults on the controller itself on the probes or in network communication between the Master and Slaves An alarm can also be activated from an external contact immediate or delayed See paragraph 5 2 The display shows IA and at the same time the alarm icon triangle flashes and the buzzer is activated If more than one error occurs these are displayed in sequence A maximum of 10 errors can be saved in a FIFO list parameters HSO to HS
87. cessive the superheat measured will be near 0 K This indicates the presence of liquid even if the percentage of this relative to the gas cannot be quantified There is therefore an undetermined risk to the compressor hat must be avoided Moreover a high superheat temperature as mentioned corresponds to an insufficient flow rate of refrigerant The superheat temperature must therefore always be greater than 0 K and have a minimum stable value allowed by the valve unit system A low superheat temperature in fact corresponds to a situation of probable instability due to the turbulent evaporation process approaching the measurement point of the sensors The expansion valve must therefore be controlled with extreme precision and a reaction capacity around he superheat set point which will almost always vary from 3 to 14 K Set point values outside of this range are quite infrequent and relate to special applications Parameters SH tGS tEu and PPU are display only variables used to monitor the refrigeration cycle Fig 5 1 Key i Superheated gas temperature EEV Electronic expansion valve E Fan forced evaporator p Evaporation pressure MPXPRO 0300055EN rel 1 3 07 03 13 40 CAREL 6 ADVANCED FUNCTIONS This chapter examines the categories of parameters already described in the chapter on basic functions so as to explain the use of the corresponding advanced parameters and control algorithms In addition the parameters
88. closing of the digital contact starts the defrost if enabled In the event of Master Slave network connection if the controller is the Master the defrost will be a network defrost while if it is a Slave it will only be a local defrost The defrost digital input can be used effectively to perform real time defrosts Simply connect a timer to the multifunction digital input on the Master and use d5 to delay the defrosts on the various Slaves and thus avoid current overloads Note if the defrost is inhibited by another digital input configured as enable defrost the defrost calls are ignored 5 Door switch Door open stop control shutdown compressor solenoid and evaporator fans switch light on if configured see parameters H1 H5 H7 alarm icon triangle flashing on the display e disable temperature alarm Door closed resume control switch light off if configured see parameters H1 H5 H7 triangle icon stops flashing on the display e enable temperature alarm after bypass time defined by parameter d8 Door switch CAREL Note when resuming control the compressor protection times are observed see the advanced functions compressor parameters if the door remains open for a time greater than the value set for parameter d8 control is resumed in any case The light remains on the value shown on the display flashes the buzzer and the alarm relay are
89. d X number of the Slave controller where the error occurred MPXPRO CAREL 3 7 Maximum and minimum temperature monitoring parameters r5 rt rH rL The minimum and maximum temperatures measured by the probe set for parameter r5 can be monitored over a period of up to 999 hours more than 41 days To enable this function proceed as follows enter advanced programming mode type A parameters as explained in paragraph 3 3 set parameter r5 to select the probe used for monitoring see the table of parameters e display parameter rt and press Set to display the number of hours minimum and maximum temperature monitoring has been active if just enabled rt 0 or to restart temperature monitoring press DOWN for more than 5 seconds while displaying the hours the message rES indicates the hours have been reset The controller resets the hour counter and restarts monitoring e to display the maximum temperature measured by the probe read the value associated with parameter rH to display the minimum temperature measured by the probe read the value associated with parameter rL 1 23 3 8 Using the remote control accessory The MPXPRO remote control is an instrument developed to simplify the programming and setup of an MPXPRO controller As well as the traditional remote keypad it features a series of functions used to override the status of the outputs and inputs so as to completely test the
90. d A2 is similar to AL AH AA A1 relating to St2 Par Description Def Min Max UoM AL Low temperature alarm threshold 4 50 0 50 0 C F f A1 0 AL 0 alarm disabled f Al 1 AL 50 alarm disabled AH High temperature alarm threshold If A1 0 10 50 0 50 0 C F AH 0 alarm disabled f Al 1 AH 50 alarm disabled AL2 Low temperature alarm 2 threshold 0 50 0 50 0 C F f A2 0 AL2 0 alarm disabled f A2 1 AL2 50 alarm disabled AH2 High temperature alarm 2 threshold 0 50 0 50 0 C F f A2 0 AH2 0 alarm disabled f A2 1 AH2 50 alarm disabled Al Alarm thresholds AL AH relative to the set 0 0 1 point St or absolute 0 relative 1 absolute A2 Alarm thresholds AL2 AH2 relative to the 0 0 1 set point St2 or absolute 0 relative 1 absolute AO High and low temperature alarm reset 2 0 0 1 20 0 C F differential Ad _ Delay time for high and low temperature 120 0 240 min alarms A7___ Delay time for delayed external alarm 0 0 240 min A6 Configure solenoid compressor control du 0 0 100 min ring external alarm immediate or delayed with fixed 15 min OFF time 0 always OFF 100 always ON Tab 9 d Note e alarms LO LO2 and HI HI2 have automatic reset AO represents the hysteresis between the alarm activation value and deactivation value if Prg mute is pressed when the valu
91. d status variables relating to the Master controller as well as the Slave controllers in the subnetwork If the connection is made to the terminal on a slave only the parameters unit and operating and status variables of that Slave can be accessed Commissioning via the RS485 supervisor port with CVSTDUMORO converter As well as the connection via the terminal MPXPRO can also be connected to a PC via the RS485 supervisory network In this case the PC will only be connected to the Master controller Access to the parameters unit and operating and status variables relating to the Slaves connected to the Master will be available via the Master controller To use this commissioning connection connect a Master controller board terminals 20 21 22 to the RS485 output on the CVSTDUMORO converter using an RS485 connection cable connect the USB ports on the converter and the PC using a USB cable Note To manage the Slave controllers in the subnetwork from the PC make sure that these are correctly connected to the Master via the tLAN MASTER SLAVE HEHHEE T L a tLAN RS485 lt PC USB CVSTDUMORO AS Fig 2 t MPXPRO 0300055EN rel 1 3 07 03 13 2 12 Settingthedefaultparameters loadingthe parameter sets Introduction Seven different sets of parameters are saved in t
92. d8 Bypass high temperature alarm time after defrost and door open 33 30 1 240 min x d9 Defrost priority over compressor protection times 47 1 0 1 A amp 0 protection times observed 1 protection times not observed Sd1 Defrost probe 34 z 7 SCF a Sd2 Secondary evaporator defrost probe 34 lt 5 S C F a dc Time base for defrost 48 0 0 1 a 0 dl in hours dP 1 dP2 and ddP in min 1 dl in minutes dP1 dP2 and ddP in seconds d10 Defrost time in Running time mode 49 0 0 240 min A Pog 0 function disabled d11 Defrost temperature threshold in Running time mode 49 30 50 50 C PF se 2 Pressure probe alarm management during defrost 49 0 0 3 x probe error update supervisor 0 disabled enabled 1 enabled enabled 2 disabled disabled 3 enabled disabled ds1 Compressor off time in Sequential stop defrost mode 49 0 0 45 min A x 0 function disabled ds2 Compressor operating time in Sequential stop defrost mode 49 120 0 240 min A x ddt Additional end defrost temperature delta in Power defrost mode 50 0 0 20 0 20 0 GEE A 3h ddP Additional maximum defrost time delta in Power defrost mode 50 0 0 60 min A Pa dn Nominal Skip defrost duration 49 75 0 100 A a dis Number of daily defrosts td1 39 0 0 14 C 5 0 Disabled 8 3 hours 0 minutes 1 24 hours 0 minutes 9 2 hours 40 minutes 2 12 hours 0 minutes 10 2 hours 24 minutes 3 8 hours 0 minutes 11 2 hours 11 minutes 4 6 hours 0 minutes 12 2
93. e display is question in order to avoid interfering with other controllers Activating the remote control Synch enable the use of the remote control Esc disable the use of the remote control After pressing Synch each device displays its value of parameter H3 remote control enable code if not null The numeric keypad can be used to specify the code of the instrument in question so as to avoid interference with the other devices Important parameter H3 is equal to 0 by default on all MPXPRO controllers to avoid interference within the operating range of the remote control the values of parameter H3 should be unique for each device e after 5 minutes without pressing any button the remote control connection is automatically interrupted together with any active overrides To keep the connection and any overrides active press any button before the 5 minutes elapse Before interrupting the connection the display flashes for 10 seconds to signal the imminent disconnection e the remote control can be disabled completely by setting parameter H2 3 MPXPRO 0300055EN rel 1 3 07 03 13 Remote keypad and navigation button Pressed briefly 1 s Pressed and held 5 s Return to the pre Return to the initial display 2ra fyious menu and save changes mute Mute buzzer Access ALL the parameters Edit parameter r Set f Confirm changes ae al A ON OFF O Scroll Light
94. e function 0 0 1 PLt Smooth Lines Offset to stop control below 2 0 10 0 10 0 CPF set point PHS Smooth Lines Maximum superheat offset_ 15 0 0 0 50 0 K Note Smooth Lines is not compatible with traditional Floating Suction control and must be used with the new Rack Smart Set algorithm MPXPRO 0300055EN rel 1 3 07 03 13 52 CAREL 6 10 Protectors LowSH Low superheat To prevent too low superheat values that may cause the return of liquid to the compressor or system instability swings a low superheat threshold can be defined below which a special protection function is activated When the superheat falls below the threshold the system immediately enters low superheat status and activates a control action in addition to normal control with the aim of closing the electronic valve more quickly In practice the intensity of the system reaction is increased If the device remains in low superheat status for a certain period a low superheat alarm is activated with the display showing the message LSH The low superheat signal features automatic reset when the condition is no longer present or the controller is switched off standby When low superheat status is activated the local solenoid valve can be forced closed parameter P10 Par Description Def Min Max UoM P7 LowSH low superheat threshold 70 10 0 P3 K P8 LowSH integration time 15 0
95. e measured is above one of the hresholds the buzzer is immediately muted while the alarm code and the alarm output if set remain active until the value measured is outside of the activation threshold For delayed alarms from digital input A4 3 code dA the contact must remain open for a time greater han A7 In the case of an alarm event a counter starts and generates an alarm when reaching the minimum time A7 If during the count he value measured returns within the threshold or the contact closes he alarm is not signalled and the count is reset When a new alarm condition occurs the count starts from 0 again Parameter A6 has a similar meaning to parameter c4 duty setting If an external alarm occurs immediate or delayed the compressor works for a time equal to the value set for A6 and remains off for a fixed time of 15 minutes LO HI ON OFF i i Sl SS ay gas AL AH L02 HI2 ON OFF i i i n 92 A0 A0 AL2 AH2 Fig 9 b Key LO LO2 Low temperature alarms HI HI2 High temperature alarms S1 S2 Probes Enable valve alarm at end travel blo Parameter P14 is used to enable disable the valve blocked alarm signal blo Par Description Def Min Max UoM P14 Enable valve alarm at end travel blo 1 0 1 1 signal enabled Tab 9 e Signal alarms from Slave to Master Master controllers if Ar 1 can indicate a Slave with an alarm in the tLAN network If
96. e offset defined by parameter r4 Stn St r4 In addition if necessary the control probe is changed based on the configuration of parameter r6 0 virtual probe 1 intake probe the AUX or light output is deactivated based on the setting of parameter H8 During day status normal operation resumes set point St virtual probe used as control probe activation of the AUX or light output based on the setting of parameter H8 Par Description H8 Output switched with time bands 0 Light 1 Aux Def Min Max UoM be Tab 5 h 8 Continuous cycle When the contact closes the continuous cycle is activated parameters cc and c6 see the Advanced functions The continuous cycle ends when the contact opens again 9 Light sensor The light sensor converts the light signal into a value which is processed and compared against the threshold set for parameter H12 to determine changeover from night to day and vice versa See paragraph 6 2 33 5 3 Analogue outputs The most complete version of MPXPRO see paragraph 1 1 Models features the following analogue outputs 2 PWM outputs used as a control signal to manage loads such as modulating evaporator fans or anti sweat heaters The first output PWM1 is connected to phase cutting speed controller CAREL code MCHRTF the second PWM2 to the solid state relay SSR output MPXPRO can also be fitted with a driver for stepper electronic
97. e probe error signals errors are ignored The supervisor update can also be disabled Par Description Def Min Max UoM d12 Pressure probe alarm management during 0 0 3 5 defrost probe error supervisor update O disabled enabled 1 enabled enabled 2 _ disabled disabled 3 enabled disabled Tab 6 ah Sequential stops parameters dS1 dS2 Par Description Def Min Max UoM dS1 Compressor off time in Sequential stop 0 0 45 min defrost mode dS2 Compressor operating time in Sequential 120 0 240 min stop defrost mode Tab 6 ai Sequential stop mode is especially useful for high normal temperature refrigeration controllers and is based on the intelligent stopping of control to allow the evaporator to defrost naturally by the flow of ambient air only without activating the defrost output and consequently the defrost heaters If the function is enabled parameter dS1 gt 0 two counters are activated e OFFTIME counts down during the stop time and on hold during control ONTIME counts down during control and on hold during the stop time Two events may occur with reference to the following figure 1 OFFTIMEisreset instantC OFFTIMEandONTIMEareresetwithdS1 and dS2 value and the defrost is considered completed Control resumes 2 ONTIME is reset instant A OFFTIME is reset with the default value and the natural defrost starts
98. ead by the probes described above are called tGS superheated gas temperature tEu saturated evaporation temperature converted from pressure These values are used to calculate the superheat SH tGS tEu MPXPRO manages the proportional opening of the electronic expansion valve adjusting the flow of refrigerant in the evaporator so as to maintain the superheat around the value set for advanced parameter P3 superheat set point The opening of the valve is controlled simultaneously yet independently from normal temperature control When there is a refrigeration call the compressor solenoid valve relay is activated MPXPRO 0300055EN rel 1 3 07 03 13 control of the electronic valve is also activated and then managed independently If the superheat value read by the probes is greater than the set point the valve is opened proportionally to the difference between the values The speed of variation and the percentage of opening depend on the PID parameters set The opening is continuously modulated based on the superheat value with PID control Note all the references relating to control of the electronic valve are based on the use of a CAREL E V electronic expansion valve The descriptions are then made considering the steps of the stepper motor used for this type of valve for example the maximum number of opening steps is 480 All the functions are also then described for PWM valves In particular instead of the maxim
99. ear M Alarm 1 to 3 Month 0 1 12 month d Alarm 1 to 3 Day of the month 0 1 31 day Alarm log parameters HSO to HS9 h Alarm 1 to 3 Hours 0 0 23 hour n Alarm 1 to 3 Minutes 0 0 59 minute The alarm log can be displayed by accessing parameters HSO to HS9 Alarm 1 to 3 Duration 0 0 240 minute rather than using the procedure described in paragraph 9 3 Tab 9 j Par Description Def Min Max UoM HSO to 9 Alarm 0 to 9 press Set Alarm 0 to 9 Code h Alarm 0 to 9 Hours 0 0 23 hour n Alarm 0 to 9 Minutes 0 0 59 min s Alarm 0 to 9 Duration 0 0 999 min Tab 9 h ALARM 9 6 HACCP alarm parameters and activating A A i black out monitoring gt lt Fig 9 d Type HA alarms Key S Measurement probe ALARM Type HF HACCP alarm The alarm queue can be displayed by accessing parameters HA to HA2 St Set point t Time rather than using the procedure described in paragraph 9 4 The type AH High temperature alarm HA alarm is generated if during normal operation the temperature threshold ead by the probe set for parameter AA exceeds the high temperature hreshold for the time Ad Htd Consequently compared to the normal high temperature alarm already signalled by the controller the type HA ACCP alarm is delayed by a further time Htd specifically for HACCP ecording The order of alarms listed is progressive HA is the most
100. ectrical panel e usea twisted pair shielded cable e g Belden 8762 AWG 20 or BELDEN 8761 AWG 22 connect a 120 Q terminal resistor between the Tx Rx and Tx Rx terminals on the last MPXPRO controller MPXPRO 0300055EN rel 1 3 07 03 13 CAREL 2 10 Programming key copy set up A Important the key must be used with the controller off and with the RS485 serial line disconnected from the MPXPRO The MXOPZKEYAO IROPZKEYAO programming key is used to copy the complete set of MPXPRO parameters The key must be plugged into the connector 4 pin AMP on the controllers with the controller powered down Note MXOPZKEYAO can only be used on MPXPRO with firmware versions gt 2 1 with max 6 sets of parameters IROPZKEYAO can only be used on MPXPRO with firmware versions lt 1 2 with max 2 sets of parameters The firmware version of the MPXPRO can be identified as follows 1 onthe label applied to the rear of the instrument The second part of the revision number represents the firmware version e g Rev 1 326 means firmware revision 2 6 This info is valid only if the MPXPRO has never been updated by the user 2 onthe terminal display When powering up the MPXPRO the terminal displays the firmware revision e g r 2 6 for a couple of seconds 3 using the VPM or from the supervisor Integer variable 11 Firmware release Official versions available are 1 0 1 1 1 2 2 1 2 2 2 6 2 8 By setting the tw
101. ee parameter A12 Default connections NTC RATIOMETRIC a oimemneatre saturated evaporation pressure temperature defrost temperature proibe PEu tEu probe Sd air on temperaure superheated probe Sr gas probe tGS Fig 4 n Outputs The default configuration involves Relay 1 solenoid valve compressor see parameter H13 Relay 2 light see parameter H7 Relay 3 defrost not modifiable Relay 4 evaporator fans see parameter H1 Relay 5 alarm see parameter H5 PWM 1 anti sweat heater control see paragraph 6 3 PWM 2 evaporator fan speed control see FAN category parameters Note VPM Visual Parameter Manager can be used to modify the relay mapping Power supply 115 230 V T t 200 mA max li L N r Fig 4 0 CAREL 4 3 Guided commissioning procedure user terminal remote display When first powered up MPXPRO runs a procedure that guides the user in setting the main parameters for the configuration of the electronic valve and the serial network Start up parameters Par Description P2 __ Type of probe group 2 S4 5 P3 __ Type of probe group 3 S6 Fd__ Assign tGS superheated gas temperature probe FE _ Assign PEu tEu saturated evaporation pressure temperature probe U6 _ Maximum value of probe 6 L6 _ Minimum value of probe 6 P1 Electronic valve PH __ Type of refrigerant In Type of unit Sn Number
102. ee parameters c4 c5 P3 Type of probe group 3 S6 Used to select the type of temperature or ratiometric pressure probe to be used for input S6 Par Description Def Min Max UoM P3 Type of probe group 3 S6 0 0 4 0 NTC Standard Range 50T90 C 1 PTC Standard Range 50T150 C 2 PT1000 Standard Range 50T150 C 3 NTC L243 Standard Range 50T90 C 4 0to 5V ratiometric probe Tab 4 e Note NTC L243 PTC PT1000 can only be set in the full optional models or models with EEV driver Fd Assign tGS superheated gas temperature probe Used to assign the measurement of the superheated gas temperature at the evaporator outlet to the selected probe Par Description Def Min Max UoM Fd_ Assign tGS superheated gas temperature 0 0 11 7 0 Funct disab 6 Probe S6 1 Probe S1 7 Probe S7 2 Probe S2 8 Serial probe S8 3 Probe S3 9 Serial probe S9 4 Probe S4 10 Serial probe 10 5 Probe S5 11 Serial probe S11 Tab 4 f FE Assign PEu tEu saturated evaporation pressure temperature probe Used to assign the measurement of the saturated evaporation pressure temperature to the selected probe which by default is the probe connected to input S6 The 0 to 5 Vdc ratiometric probe is recommended Par Description Def Min Max UoM FE Assign PEu tEu saturated evaporation 0
103. emperature probe is only estimated PI control becomes proportional only If both algorithms are activated the PI algorithm has priority over fixed activation which does not require the ambient temperature and humidity probes There are a series of conditions whereby the PI algorithm stops operating and if activated fixed activation control takes over In these cases if MPXPRO is not OFF the signal AcE is shown on the display Cause physical probe not configured or error the estimate of the glass temperature probe cannot be used because the outlet probe or intake probe is not configured or has an error or the ambient probe is broken or missing e humidity probe and or ambient probe are not configured and operating e the serial dewpoint value is not available Condition Glass temperature probe not valid Dewpoint not valid Tab 6 k If the intake probe is not configured or has an error the outlet probe alone is used PI control Inputs The humidity SU and ambient temperature SA probes may be see parameters FL FI connected to the Master which automatically shares them with the Slaves connected locally to each controller sent from the supervisor via the serial probes CAREL Alternatively the supervisor can directly supply the dewpoint value Sdp using the serial probes see parameter Fn The glass temperature probe Svt may be connected directly to each controller
104. er defrost Skip defrost etc maximum and minimum evaporator fan speed the integration times and delays for the superheat protection functions and the parameters for displaying the normal and HACCP alarm queue Procedure 1 press Prg mute and Set together for more than 5 seconds if there are active alarms the buzzer is muted the display shows the number 0 flashing 2 press UP or DOWN and enter the PASSWORD 33 Confirm byselecting Set 3 the first modifiable type A parameter is displayed 2 4 see the paragraph Setting the parameters point 1 Important with this procedure available starting from firmware version 2 x all the controller parameters can be accessed the type of parameters F frequent C configuration A advanced and the related password can be modified using the VPM program MPXPRO 0300055EN rel 1 3 07 03 13 Setting the parameters Once having accessed the desired level of parameters F C or A 1 pressUPorDOWNuntilreachingthedesiredparameter whenscrolling an icon appears on the display representing the category the parameter belongs to see the table below and the table of parameters 2 or press Prg mute to display the menu of parameter categories See the table of parameters at the end of manual for further details on the categories Press UP DOWN until reaching the desired category of parameters and press Set the
105. erse logic 61 MPXPRO 0300055EN rel 1 3 07 03 13 CAREL Par Description Pag Def Min Max UoM Type Icon H11 Configure evaporator fan digital output logic 44 0 0 1 A AUX 0 direct logic 1 reverse logic H12 Light sensor threshold 42 25 10 100 lux A AUX H13 Configure function of output AUX4 see H1 33 12 0 12 C AUX Hdn Number of default parameter sets available 18 0 6 NV Htc Clock fitted 58 0 0 1 A AUX 0 not fitted rHu Manual anti sweat heater activation percentage of period rHt 43 70 0 100 A AUX 0 function disabled rHt Manual anti sweat heater activation period 43 5 0 180 min A AUX 0 function disabled rHo Offset for anti sweat heater modulation 43 2 0 20 0 20 0 CLF A AUX rHd Differential for anti sweat heater modulation 43 0 0 0 20 0 C E A AUX rHL Type of PWM output load for anti sweat heater modulation 43 0 0 1 A AUX 0 resistive 1 inductive rHA Coefficient A for glass temperature probe estimate 43 2 20 20 CEF NV rHb Coefficient B for glass temperature probe estimate 43 22 0 100 NV HSt Alarm log HSO to 9 Alarm 0 to 9 press Set 68 A AO Alarm 0 to 9 Code 68 AO h Alarm 0 to 9 Hours 68 0 0 23 hour bi AO n Alarm 0 to 9 Minutes 68 0 0 59 min A
106. eshold 54 7 0 10 0 P3 K A P8 LowSH integration time 54 15 0 0 0 240 0 S A A A 0 function disabled P9 LowSH alarm delay 54 600 0 999 s A A 0 alarm disabled P10 Enable close solenoid valve for low superheat LowSH and or low suction temperature 55 0 0 1 A A A LSA 1 closing enabled P11 LSA low suction temperature threshold 55 45 0 50 0 50 0 GPF A A MPXPRO 0300055EN rel 1 3 07 03 13 60 CAREL Par Description Pag Def Min Max UoM Type Icon P12 LSA alarm delay 55 600 0 999 s A A 0 alarm disabled P13 LSA alarm differential C 55 10 0 0 0 60 0 C E A vA 0 reset always automatic P14 Enable valve alarm at end travel blo 67 1 0 1 A A 1 signal enabled P15 Support saturated temperature for pressure probe error 53 15 0 50 0 50 0 CAF A A PH Type of refrigerant 28 51 3 1 22 A A 1 R22 8 R600 15 R422D 22 R407F 2 R134a 9 R600a 16 R413A 3 R404A 10 R717 17 R422A 4 R407C 11 R744 18 R423A 5 R410A 12 R728 19 R407A 6 R507A 13 R1270 20 R427A 7 R290 14 R417A 21 R245Fa OSH Superheat offset for modulating thermostat 53 0 0 0 0 60 0 K A A 0 function disabled Phr Enable fast update of the val
107. eters A4 A5 A10 A11 Input DI5 can only be used as a digital input and is configured by parameter A12 See the description of the terminals in paragraph 2 2 The probes temperature NTC PTC PT1000 NTCL243 0 to 5 Vdc ratiometric and active probes can be connected to the analogue inputs and have been divided into 5 groups with the same type of probe for each group See the table of parameters Types of probes that can be connected to each group Group 1 Group 2 Group3 Group4 Group 5 i S8 S9 Composition 51 52 53 S4 S5 S6 S7 510511 p arameter for typeof P1 P2 P3 P4 P5 probe 0 NTC Standard Range 50T90 C bd 7 1 PTC Standard e e e d Range 50T150 C 2 PT1000 Standard e e e e Range 501150 C 3 NTC L243 Standard Range 50T90 C e ai i 4 0 to 5V ratiometric 7 7 m 7 probe 5 0 to 10V input 3 e 6 4 to 20 mA input e Serial probes e Tab 5 a Inputs S6 S7 can be connected to 0 to 5 V ratiometric pressure probes remembering however that MPXPRO can only supply one ratiometric probe Input S7 can nonetheless also be connected to active probes with a 4 to 20 mA or 0 to 10 V output which cannot be powered directly by MPXPRO All these probes require the range of measurement to be defined set by parameters L6 U6 L7 U7 See the table of parameters Probe 6 Probe 7 Minimum value Maximum value
108. event are managed e type HA alarms high temperature during the operation type HF alarms high temperature after power failure blackout When an alarm is recorded the HACCP LED flashes the display shows the alarm code the alarm is saved and the alarm relay and buzzer are activated To display the HA and HF alarms press Prg mute and DOWN together e ifona Master unit select the required network unit scroll the list of alarms pressing UP and DOWN press Set to select the required alarm e using UP or DOWN to see the description of the alarm year month day hours minutes and duration in minutes of the selected alarm press Prg mute again to return to the previous list In addition the HACCP alarm menu allows the following operations e delete an HACCP alarm by pressing Set amp DOWN for 5 seconds when displaying the list of alarms This causes the HACCP to flash the display shows the message rES and the monitoring of HACCP alarms is reinitialised e delete the entire memory of HACCP alarms by pressing Set amp UP amp DOWN for 5 seconds This procedure displays the message rES deletes the entire memory of alarms and reinitialises the monitoring of the HACCP alarms MPXPRO 0300055EN rel 1 3 07 03 13 Table of alarms CAREL
109. expansion valves or a driver for PWM electronic expansion valves In this case the driver cards as well as the valve control outputs also have an additional 0 to 10 Vdc output which can be used to control variable speed evaporator fans brushless or other types with 0 to 10 V input 5 4 Digital outputs The most complete version of MPXPRO see paragraph 1 1 Models features 5 digital outputs called R1 R2 R3 R4 R5 Of these only R3 is used for defrost management the other 4 output called auxiliary outputs AUX can be configured by parameters See the table below Output Relay _ Parameter Default function AUX1 R4 H1 Evaporator fan output AUX2 R5 H5 Normally energized alarm output AUX3 R2 H7 Light output AUX4 R1 H13 Solenoid output Tab 5 1 Functions of the digital outputs Parameters H1 H5 H7 0 No function 7__ Auxiliary evaporator defrost 1 ormally de energized alarm 8 Evaporator fans 2 Normally energized alarm 9 _ Anti sweat heaters 3 Auxiliary 10 Suction valve 4 Auxiliary serving the Master on the 11 Equalizing valve Slaves 5 Light 12 Liquid solenoid valve 6 Light serving the Master on the Slaves only for R1 AUX4 Normally de energized normally energized alarm With reference to the general connection diagram in paragraph 2 8 outputs AUX1 AUX2 or AUX3 configured as alarm output can work as normally de energized the relay is energ
110. f See paragraph 5 6 for an installation diagram with equalizing valve Located in parallel with the suction valve it can be open only in the dripping phase or also during the normal refrigeration cycle the pump down and post dripping phases Defrost Running time parameters d10 d11 Running time is a special function that determines when the refrigeration unit needs defrosting In particular it is assumed that if the evaporator temperature measured by probe Sd remains continuously below a certain set threshold d11 for a certain time d10 the evaporator may be frozen and a defrost is activated The time is reset if the temperature returns above the threshold Par Description Def Min Max UoM d10 Defrost time in Running time mode 0 0 240 min 0 function disabled d11 Defrost temperature threshold in Running 30 50 50 C F time mode dtl _ End defrost temperature read by Sd 8 50 0 50 0 C F dt2__ End defrost temperature read by Sd2 8 50 0 50 0 C F Tab 6 ag d1 Sd d11 ON DEF OFF Key Sd Defrost probe t Time DEF Defrost Important for multiplexed hot gas defrosts the setting is only valid on the Master and the defrost is synchronized across the Master Slave network A MPXPRO 0300055EN rel 1 3 07 03 13 Pressure probe alarm management during defrost parameter d12 During defrost and dripping so as to avoid false pressur
111. f Slaves in the previous network Example to configure the addresses in a supervisor network made up of three Master controllers that manage 5 3 and 1 Slave controllers respectively Solution assign for example the first Master controller serial address H0 31 which also represents the controller address in the supervisor network the serial address of the second Master controller will be 37 and the third 41 See the following figure Note only the Master controller must be connected to the RS485 serial line all Slave controllers communicate with the supervisor via the Master controller over the tLAN Note MPXPRO works with CAREL and Modbus supervisory network The controller automatically identifies the protocol type MPXPRO 0300055EN rel 1 3 07 03 13 28 CAREL CAREL Ind Seriale indica l indirizzo seriale con cui lo strumento visibile a supervisione PlantVisorPRO RS485 Ind seriale 31 Ind seriale 37 Only Master units to be connected on RS485 Shield Ind seriale 41 b In 1 a In 1 a In 1 M a g Sn 5 M E g Sn 3 M Sn 1 HO 31 HO 37 HO 41 Ind seriale 32 Ind seriale 38 Ind seriale 42 m In 0 In 0 B In 0 S1 Sn 0 S1 E Sn 0 S1 5 w Sn 0 gt HO 1 HO 1 HO 1 Ind seriale 33 Ind seriale 39 Nota a In 0 a In 0 se il controllo slave
112. gram and check the operation of an MPXPRO controller from the PC when installing and first starting the system The commissioning connection can be used to e set value visibility and download attributes of all the parameters from Master to Slave including unit parameters completely program a key e at start up monitor and manually control all the inputs outputs update the firmware A PC can access the commissioning connection via the special port available on some user terminals code IROOUGC300 and remote display code IROOXGC300 or in supervisory RS485 network The commissioning software can also be used to program the key Further information on the operation of the commissioning software is available in the online manual for the VPM program downloadable from http ksa carel com 17 Commissioning via terminal display with IROPZTLNOO converter This is used to connect a supervisor PC running the special software to an MPXPRO controller via a user terminal IRO0OUGC300 or remote display IROOXGC300 fitted with commissioning port Identify the connection port located under the keypad Terminal IROOUGC300 IROOXGC300 IROPZTLNOO USB tLAN converter A Fig 2 5 Connect the USB ports on the converter and the PC using a USB cable If the PC is connected to a Master controller the software can access the unit and operating parameters an
113. he MPXPRO from a PC during commissioning when starting the system In particular this method is used to e set the values visibility and attributes of all the parameters including unit parameter completely program a key e during start up monitor and manually override all the inputs outputs update the firmware Configuration The commissioning tool can be connected from the PC via a a dedicated port available on some user terminals remote displays SEVIS E tLAN HENA mal paw lt E USB Tomina IROPZTNLOO IROOUGC300 USB tLAN converter IROOXGC300 commissioning cable PC Fig 4 1 b the RS485 supervisor network MASTER SLAVE PC USB CVSTDUMORO USB RS485 converter Fig 4 m 3 Userterminal When firststarted MPXPROactivatesa special procedure to set the critical parameters for correct communication of the controller with a supervisor and Master Slave network management of the electronic valve This procedure can be disabled from the key or commissioning tool VPM During this procedure the device remains in standby and the functions are disabled including control and communication via RS485 or tLAN The special configuration menu is only displayed on the user terminal consequently one needs to be connected if the function is not disabled avo
114. he MPXPRO memory Set 0 called the working set contains the set of parameters used by MPXPRO during normal operation This set is loaded whenever MPXPRO is started and the parameters can be modified at any time from the terminal supervisor remote control VPM and programming key The other six sets of parameters numbered 1 to 6 contain other lists of parameters preloaded by CAREL during production which can be copied as desired to the working set Set 0 These sets of parameters unlike Set 0 can only be modified using the programming key and the VPM The sets of parameters once differentiated by the manufacturer of the unit can be loaded so as to rapidly set a list of parameters with corresponding values to control the refrigeration system Parameter sets from 1 to 6 can be modified as follows 1 copy the parameters from MPXPRO to the programming key MXOPZKEYAO UPLOAD 2 read the parameters saved on the programming key using VPM 3 selectthesetandmodifytheparametersusingVPM Foreachparameter the value visibility enabling to copy from Master to Slave and configurability at first start up can all be set 4 write the parameters to the programming key using VPM 5 copy the parameters from the programming key to MPXPRO DOWNLOAD See paragraph 2 10 Note when copying the parameters from the key to MPXPRO and vice versa MPXPRO must not be powered e to read write the parameters on the key using VPM the conver
115. he air outlet temperature evaporator outlet the defrost temperature in contact with the evaporator the air intake temperature evaporator inlet The default configuration for the assignment of the control probes is as follows S1 Outlet probe Sm S2 Defrost probe Sd S3 Intake probe Sr The default configuration also involves these three probes being standard CAREL NTC However other types of probes can be connected by setting parameter P1 if the product code allows that On MPXPRO the default settings can be changed to choose the function associated with any of the probes connected There are also cases where the characteristics of the applications require different settings Examples Control inside a cold room is normally performed using just two temperature probes in particular the intake temperature is not read In this case the possible configuration may be FA 1 outlet temperature on probe S1 Sm S1 Fb 2 defrost temperature on probe S2 Sd S2 Fc 0 no intake temperature Alternatively FA 1 outlet temperature on probe S1 Sm S1 Fb 3 defrost temperature on probe S3 Sd S3 Fc 0 no intake temperature Share control status This function is used to satisfy the needs of cold rooms or showcases with multiple evaporators where the Slaves are essentially used as expansions for the management of different electronic valves This function shares the Master con
116. he defrost call to the Master controller and this sends it in turn to the Slaves e via digital input for Master Slave networks a network defrost is activated The defrost ends when the defrost probe measures a temperature greater than the end defrost temperature dt1 when no defrost probe is used the defrost ends after a maximum time set by parameter dP1 Warnings If the multiplexed hot gas defrost is set check any possible consequences of local defrosts performed by individual units that are not synchronized with the remaining units in the multiplexed group The installer is responsible for evaluating the effects on the multiplexed system if one of the following events occurs aunitina multiplexed group performs a local hot gas defrost while the other multiplexed units continue normal control a multiplexed group starts a hot gas defrost while one of the units is offline and then continues control or is OFF if the safety procedure is activated parameter A13 In particular it is recommended to check the settings of the parameters that may cause or allow unsynchronized defrosts between a Master and its Slaves d2 end defrost synchronized by the Master in general this parameter should be set to 1 on the Master and the Slaves in the multiplexed group synchronized end defrost dl maximum interval between consecutive defrosts this parameter must be set to 0 on all units connected in Master Slave conf
117. he installation use or impossibility to use the product even if CAREL or its subsidiaries are warned of the possibility of such damage IMPORTANT A NO POWER amp SIGNAL CABLES TOGETHER READ CAREFULLY IN THE TEXT Separate as much as possible the probe and digital input cables from the cables carrying inductive loads and power cables to avoid possible electromagnetic disturbance Never run power cables including the electrical panel cables and signal cables in the same conduits DISPOSAL INFORMATION FOR USERS ON THE CORRECT HANDLING OF WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT WEEE In reference to European Union directive 2002 96 EC issued on 27 January 2003 and the related national legislation please note that e WEEE cannot be disposed of as municipal waste and such waste must be collected and disposed of separately e the public or private waste collection systems defined by local legislation must be used In addition the equipment can be returned to the distributor at the end of its working life when buying new equipment e the equipment may contain hazardous substances the improper use or incorrect disposal of such may have negative effects on human health and on the environment e the symbol crossed out wheeled bin shown on the product or on the packaging and on the instruction sheet indicates that the equipment has been introduced onto the market after 13 August 2005 and that it must be disposed of
118. he type of control F9 0 by pulse for capacitive motors F9 1 by duration for inductive motors See paragraph 5 7 for the meaning of parameters F5 F1 Frd 49 The stepper electronic valve requires a power supply to be able to open or close Starting from version 2 8 MPXPRO features a special ultracap to guarantee the power required to close the electronic valve in the event of power failures Further details on installing and selecting the cable are shown in the section on connections and wiring diagrams The ultracap takes around 2 minutes to charge completely when completely discharged It is therefore recommended to set a delay time no less than 2 minutes for compressor and evaporator fans enabling in power up parameter c0 Introduction MPXPRO depending on the optional cards installed can manage different types of electronic expansion valve Specifically Driver Code Model of valve stepper MX3OPSTP CAREL E V PWM 115 to 230 Vac ax aN MX3OPRWM PWM 110 to 230 Vdc Tab 6 am To manage the electronic expansion valve two additional probes must be installed and suitably configured temperature probe for measuring the superheated gas temperature at the evaporator outlet pressure probe for the measurement of the saturated evaporation pressure temperature at the evaporator outlet Installation notes MPXPRO is designed to manage one electronic expansion valve that controls the fl
119. he valve moves P4 steps for every degree centigrade variation in the superheat opening or closing whenever the superheat increases or decreases respectively It also acts on the other control factors and is valid in both normal control and with all emergency control functions High values gt fast and reactive valve e g 20 for CO carbon dioxide applications Low values gt slow and less reactive valve MPXPRO 0300055EN rel 1 3 07 03 13 P5 this represents the time required by the controller to balance the difference between the set point and the actual superheat It practically imits the number of steps that the valve completes each second It is only valid during normal control the special functions in fact have their own integration time High values gt slow and less reactive valve e g 400 for CO carbon dioxide applications Low values gt fast and reactive valve P5 0 gt integral action disabled P6 this represents the reaction of the valve to variations in the superheat t amplifies or reduces variations in the superheat value High values gt fast variations Low values gt limited variations P6 0 gt differential action disabled Example For CO carbon dioxide applications P6 5 Smooth Lines function The new Smooth Lines function is used to optimise evaporator capacity based on actual cooling demand allowing more effective and stable control of cabinet temperature Unli
120. hours 0 minutes 5 4 hours 48 minutes 13 1 hour 0 minutes 6 4 hours 0 minutes 14 30 minutes 7 3 hours 26 minutes d2S Number of daily defrosts td2 see d1S 39 0 0 14 a dH1 Pump down phase duration 48 0 999 s A a 0 pump down disabled dHG Type of multiplexed hot gas defrost 48 0 0 i 7 A ae 0 equalizing valve normally closed 1 equalizing valve normally open ALM Alarm AA Assign probe for high AH and low AL temperature alarms 67 1 1 14 F A 1 control Sreg 8 auxiliary defrost Sd2 2 virtual Sv 9 auxiliary Saux 3 outlet Sm 10 auxiliary 2 Saux2 4 defrost Sd 11 ambient temperature SA 5 intake Sr 12 ambient humidity SU 6 superheated gas tGS 13 glass temperature Svt 7 saturated evaporation temp tEu 14 dewpoint SdP AA2 Assign probe for high AH2 and low AL2 temperature alarms see AA 67 5 1 14 A A AO High and low temperature alarm reset differential 67 2 0 0 1 20 0 CF F A 59 MPXPRO 0300055EN rel 1 3 07 03 13 CAREL Par Description Pag Def Min Max UoM Type Icon Al Alarm thresholds AL AH relative to the set point St or absolute 67 0 0 1 F A 0 relative 1 absolute A2 Alarm thresholds AL2 AH2 relative to the set point St2 or absolute 67 0 0 1 A A 0
121. ic variable From the main menu pressing and holding 5 sec the Restore ALL button disables all the active overrides CAREL E V area override position of the electronic expansion valve In this section the position of the electronic expansion valve can be controlled manually As in the other cases the override function is activated by pressing the button once When pressing one of the buttons the display shows the position reached for 3 seconds then resumes the display of the previous variable to allow the position of the valve to be changed and then immediately observe the result Specifically the various buttons have the following functions e cyclically open close the expansion valve Fo completely each command is signalled on the display by the message OPn if the valve is opening Res E V or CLo if the valve is closing for 3 seconds e increase the position of the valve The effect Wo depends on the type of valve configured For E V Open Close stepper valves each time the button is pressed the position of the valve increases by 10 steps while for a PWM valves it increases by 5 e decrease the position of the valve As above for EV stepper valves the position decreases by 10 steps while for PWM it decreases by 5 e Res E V pressed for 5 seconds restores the normal operation of the electronic valve This button is used to disable the override on the electronic expansion va
122. iding conflicts in the network LAN or return of liquid refrigerant to the compressor Only after having set all the required parameters can normal configuration be performed 4 Remote control When first started this can be used to directly configure the critical parameters without needing to activate the synchronization function synch button MPXPRO 0300055EN rel 1 3 07 03 13 26 CAREL 4 COMMISSIONING 4 2 Recommended initial configuration MPXPRO features highly configurable inputs and outputs CAREL in any case recommends the basic configuration following the default settings of the parameters By following this suggestion the controller can independently manage the main functions in most applications without having to significantly modify the settings of the parameters Inputs The default configuration involves Group 1 NTC temperature probes on the showcase S1 NTC outlet probe Sm S2 NTC defrost probe Sd e S3 NTC intake probe Sr Group 2 superheat control S4 DI1 NTC superheated gas temperature probe on evaporator outlet configured only on models with valve driver included see parameter Fd e S5 DI2 input not active Group 3 superheat control e S6 DI3 ratiometric evaporator pressure probe configured only on models with valve driver included see advanced parameters P3 U6 L6 FE Group 4 e S7 input not active Group 5 e digital input DI5 not active s
123. iguration o prevent unsynchronized defrosts from being performed if the tLAN is offline d5 defrost delay on start up this delay must be set in the same way on all the units e H6 terminal keypad lock configuration this should be set to 2 on the aster and the Slaves to avoid starting local defrosts from the keypad In addition to setting parameter A13 to 1 Enable hot gas safety procedure for Slave offline the safety procedure is also activated switching a Slave offline if it no longer communicates with its Master MPXPRO 0300055EN rel 1 3 07 03 13 38 CAREL Maximum interval between consecutive defrosts parameter dl Par Description Def Min Max UoM dl Maximum interval between consecutive 8 0 240 hour defrosts Tab 5 t Parameter dl is a safety parameter used to perform cyclical defrosts every dl hours even without the Real Time Clock RTC It is also useful if the LAN or RS485 serial network is disconnected At the start of each defrost irrespective of the duration an interval starts being counted If this interval exceeds dl without a defrost being performed one is started automatically The count is always active even if the controller is OFF If set on Master controller the parameter has effect on all the sub LANs connected if set on a Slave controller it only has an effect locally Example if there is an RTC fault the defrost programmed by td3 is no
124. ion supplied with the product or can be downloaded even prior to purchase from the website www carel com Each CAREL product in relation to its advanced level of technology requires setup configuration programming commissioning to be able to operate in he best possible way for the specific application The failure to complete such operations which are required indicated in the user manual may cause the final product to malfunction CAREL accepts no liability in such cases Only qualified personnel may install or carry out technical service on the product The customer must only use the product in the manner described in the documentation relating to the product n addition to observing any further warnings described in this manual the ollowing warnings must be heeded for all CAREL products prevent the electronic circuits from getting wet Rain humidity and all ypes of liquids or condensate contain corrosive minerals that may damage he electronic circuits In any case the product should be used or stored in environments that comply with the temperature and humidity limits specified in the manual e do not install the device in particularly hot environments Too high emperatures may reduce the life of electronic devices damage them and deform or melt the plastic parts In any case the product should be used or stored in environments that comply with the temperature and humidity imits specified in the manual e do not attempt
125. ized when an alarm occurs normally energized the relay is de energized when an alarm occurs Note operation with the relay de energized when an alarm occurs ensures maximum safety when the alarm is due to a power failure or disconnection of the power cables Auxiliary light H1 H5 H7 3 5 The actuator can be activated deactivated using the UP aux button controlled from the supervisor and based on the changeover in day night status linked to the curtain switch or the setting of the time bands activation deactivation of the actuator is signalled by the Light icon if the auxiliary output is configured as the light output H1 H5 H7 5 and H9 0 or the AUX icon if the AUX output is configured as the auxiliary output H1 H5 H7 3 and H9 1 The light or AUX output to be activated or deactivated based on the night day time band can be selected see parameters tS1 8 and tE1 8 Par Description Def Min Max UoM H9 Select function associated with the aux 0 0 1 button on the user terminal 0 Light 1 AUX Tab 5 j MPXPRO 0300055EN rel 1 3 07 03 13 Auxiliary light serving the Master on the Slaves H1 H5 H7 4 6 From the Master the action of the auxiliary output is propagated via tLAN to the Slaves whose digital output is configured as H1 4 for the auxiliary output and H1 6 for the light output Auxiliary evaporator defrost not compatible with electronic expansion
126. ke the existing modulating thermostat OSH this function completely eliminates traditional on off control modulating the temperature inside the cabinet exclusively using the electronic expansion valve and adjusting the superheat set point by adopting accurate PI control based on the effective control temperature The main features are The superheat set point for managing the electronic expansion valve can vary between a minimum traditional set point P3 and maximum limit P3 PHS maximum offset using PI control pre configured based on the control temperature and how far this is from the corresponding set point St The temperature inside the cabinet can fall slightly below the set point St without stopping the main control however simply closing the electronic valve e Temperature control and consequently the solenoid valve relay therefore remains active at all times while the electronic expansion valve stops the flow of refrigerant into the evaporator e It is easy to use as it is the instrument itself that automatically adapts control based on current operation without requiring special parameter settings The main benefits are No swings in temperature and superheat when reaching the set point e Stable temperature and superheat control Maximum energy savings by stabilising the load MAX SH set MIN Temp set t Fig 6 t Par Descrizione Def Min Max__ UM PSM _ Smooth Lines Enabl
127. l based on the intake probe due to high temperature outside he showcase and the mixing of the air may not manage to reach the set point Displaying the intake temperature would show a temperature hat is too high Setting a set point that is too low for the intake probe Sr may cause the food to freeze On the other hand displaying the outlet emperature would show a temperature that is too low Consequently he display of the control probe set point or virtual probe can be configured using parameters t1 and t2 ON OFF control on the outlet probe is defined by set point differential These values determine the control request and consequently allowing for the protection times disabling functions or activation deactivation delays the activation and deactivation of the compressor Par Description Def Min Max UoM St Set point 50 ial m2 PChE rd Set point differential St 2 0 1 20 C F Tab 5 n R ON OFF Steg rd St Fig 5 f Key St set point Sreg control probe rd differential R control request ON OFF control depends on the capacity of the produce to absorb and release heat as well as on the evaporator cooling time The temperature therefore fluctuates above and below the set point and this may cause a decline in the quality of food conservation Decreasing the differential to make control more precise increases the frequency at which the compressor starts and stops and therefore additional
128. l value available for 30 minutes This may be useful in the event of a supervisor power failure Alarms due to probes without updated values are therefore normally shown on start up when these variables have not yet been initialised Fixed activation control manual control Control depends only on parameters rHu and rHt and follow the trend shown in the figure Par Description Def Min Max UoM rHu Manual anti sweat heater activation 70 0 100 percentage of period rHt 0 function disabled rHt Manual anti sweat heater activation period 5 0 180 min Tab 6 m PWM1 PWM2 Configurable outputs 0 to 10V AUX1 AUX2 AUX3 Fig 6 c Key A PWM output B 0 to 10V dc vutput rHu Manual anti sweat heater activation percentage rHt Manual anti sweat heater activation period t Time C Relay output 6 4 Digital outputs Configure compressor and fan output logic parameters H10 H11 Parameters H10 and H11 are used to select the logic of the digital output 0 with request active the N O contact closes and N C contact opens 1 with request active the N O contact opens and N C contact closes Par Description Def Min Max UoM H10 Configure compressor digital output logic 0 0 s 0 direct logic 1 reverse logic H11 Configure evaporator fan digital output 0 0 1 logic 0 direct logic 1 reverse logic
129. laves observe the Master controller compressor management times only parameter cc on the Master has effect while the setting on the Slaves is ignored This operating mode is highlighted on the Master user interface by the corresponding icon on steady the MPXPRO 0300055EN rel 1 3 07 03 13 CAREL Slave controllers ignore the Master control mode and manage the display as normal compressor icon on during the cooling request and off when there is no request Defrost priority over continuous cycle Par Description Def Min Max UoM c7__ Defrost priority over continuous cycle 0 0 1 0 no 1 yes Tab 6 w If c7 0 the defrost and continuous cycle are not mutually interruptible same priority any defrost or continuous cycle request remains pending if activated when running the other procedure If c7 1 the defrost calls activated when the continuous cycle is running terminate the latter and activate the defrost Delay in closing suction valve during normal control Par Descrizione Def Min Max UoM rSU_ delay in closing suction valve during 0 0 999 sec normal control 0 always open Tab 6 x If using suction valve for hot gas defrosts the suction valve can also be managed during normal control If rSu is not 0 during normal refrigeration control the suction valve will be closed rSu seconds after the optional solenoid valve is closed This allows the compressors
130. lose the solenoid valve but rather by simply controlling the flow of refrigerant Sreg St rd St rd 2 i St ON F OFF Fig 6 p Key Control probe t time Modulating thermostat function Note The action of OSH is weighted based on the difference between the temperature set point and the control temperature The lower the difference the greater the action of OSH and vice versa OSH is active in a band at maximum equal to half of the differential rd Sreg With double thermostat e the action of OSH will be determined by the thermostat with the lower difference between the set point and the actual temperature e the highest contribution is used Tf st rd 2 or Tf2 St2 rd 2 as there are two bands Par Description Def Min Max UoM OSH Superheat offset for modulating thermo 0 0 0 0 60 0 K stat 0 function disabled Tab 6 au Example OSH too low Sreg St rd St rd 2 St t Fig 6 q 51 OSH too high Sreg St rd St rd 2 St t Fig 6 r OSH ideale Sreg St rd St rd 2 St t Fig 6 5 Key Sreg control probe St set point rd differential t time Support saturated temperature for pressure probe error parameter P15 In the event of a pressure saturated evaporation temperature probe error this represents the constant value used by the device to simulate the probe reading In centralised systems the evaporation pressure is deter
131. lve only 10stp 5 10stp 5 PV Disabling the overrides The MPXPRO remote contro can disable the overrides in four different ways with the Restore ALL button e Pressed briefly 1 sec from the main menu disables the overrides of he digital outputs in the Outputs section e Pressed briefly 1 sec from the Commands menu disables the override on each individual variable e Pressed and held 5 sec from the main menu completely disables all he overrides ith the Res EV button Pressed and held 5 s disables the override on the electronic valve only E V or PWM 25 MPXPRO 0300055EN rel 1 3 07 03 13 4 1 Once the electrical connections have been completed see the chapter on Installation and the power supply has been connected the operations required for commissioning the controller depend on the type of interface used however essentially involve setting the so called initial configuration parameters See the guided commissioning procedure 1 MXOPZKEYYAO IROPZKEYAO firmware 1 x programming key MPXPRO can be configured using programming keys that have themselves been programmed In this case simply plug the key into the connector The operation must be performed with the controller off After loading the parameters the controller can be started 2 Commissioning tool software VPM This procedure is used to program and test the operation of t
132. me band 1 to 8 day press Set 35 C d Start time band 1 to 8 day day 35 0 0 11 day h Start time band 1 to 8 day hours 35 0 0 23 hour x n Start time band 1 to 8 day minutes 35 0 0 59 min E1 to8 End time band 1 to 8 day press Set 35 C Q d End time band 1 to 8 day day 35 0 0 1 day og h End time band 1 to 8 day hours 35 0 0 23 hour n End time band 1 to 8 day minutes 35 0 0 59 min i Cc Date time Press Set 22 5 z O y Date time year 22 0 0 99 year Date time month 22 1 1 12 month i d_ Date time day of the month 22 1 1 31 day u Date time day of the week 22 6 1 7 day ig h Date time hours 22 0 0 23 hour k n_ Date time minutes 22 0 0 59 min Tab 8 a MPXPRO 0300055EN rel 1 3 07 03 13 62 CAREL 9 ALARMS AND SIGNALS 9 1 Signals 9 3 Display alarm log The signals are messages shown on the display to notify the user of the control procedures in progress e g defrost or confirm the controls from the keypad or remote control Code Icon _ Description Probe not enabled dEF Defrost running Ed1 Defrost on evaporator 1 ended by timeout Ed2 Defrost on evaporator 2 ended by timeout ret Controller enabled for programming from the remote control cE 7 Controller disabled for the programming from the remote control Add Automati
133. mined by the compressor rack set point Once this set point has been set for P15 control can continue even if not in perfect conditions in emergency situations Par Description Def Min Max UoM P15 Support saturated temperature for pressu 15 0 50 0 50 0 C F re probe error Tab 6 av PID control parameters P4 P5 P6 The opening of the electronic valve is controlled based on the difference between the superheat set point and the actual superheat calculated by the probes The speed of variation the reactivity and the ability to reach the set point depend on three parameters Kp proportional gain parameter P4 Ti integration time parameter P5 Td derivative time parameter P6 The ideal values to be set vary depending on the applications and the utilities managed nonetheless default values are proposed that allow good control in the majority of cases For further details refer to classic PID control theory Par Description Def Min Max UoM P4 __ Proportional gain 15 0 0 0 100 0 P5 Integration time 150 0 900 s 0 function disabled P6 Derivative time 5 0 0 0 100 0 S 0 function disabled Tab 6 aw P4 this represents the amplification factor It determines an action that is directly proportional to the difference between the set point and the actual superheat value It acts on the speed of the valve in terms of steps C T
134. mooth Lines Offset to stop control below set point 52 2 0 0 0 10 0 ChE A UN PHS Smooth Lines Maximum superheat offset 52 15 0 0 0 50 0 K A UN CnF Configuration n Type of unit 28 0 0 Cc AUX 0 Slave 1 Master Sn Number of slaves in the local network 28 0 0 5 C AUX 0 no Slave HO Serial or Master Slave network address 28 199 0 199 Cc AUX H1 Configure function of output AUX1 33 8 0 12 C AUX 0 No function 7 Auxiliary evaporator defrost 1 Normally de energized alarm 8 Evaporator fans 2 Normally energized alarm 9 Anti sweat heaters 3 Auxiliary 10 Suction valve 4 Auxiliary serving MASTER on the Slaves 11 Equalizing valve 5 Light 12 Solenoid valve 6 Light serving the Master on the Slaves H2 Disable keypad and remote control functions 57 1 0 5 A AUX 1 keypad and remote control enabled H3 Remote control enabling code 33 0 0 255 A AUX 0 programming from remote control without code H4 Terminal buzzer if present 57 0 0 A AUX 0 enabled 1 disabled H5 Configure function of output AUX2 see H1 33 2 0 12 C AUX H6 Terminal keypad lock configuration 57 0 0 15 A AUX H7 Configure function of output AUX3 see H1 33 5 0 12 C AUX H8 Output switched with time bands 33 0 0 1 C AUX 0 Light 1 AUX H9 Select function associated with the aux button on the user terminal 33 0 0 1 C AUX 0 Light 1 AUX H10 Configure compressor digital output logic 44 0 0 1 A AUX 0 direct logic 1 rev
135. n Max UoM to Configure user terminal remote display 3 0 3 gt User terminal Remote display 0 Present Present 1 Optional Present 2 Present Optional 3 Optional Optional Tab 7 b This parameter used to select if the user terminal and or the remote display are optional and are automatically recognised when fitted If the required device is configured as optional no alarm is generated on the supervisor when absent H2 Disable keypad and remote control functions Some functions relating to the use of the keypad can be disabled for example setting the parameters and the set point if the controller is exposed to the public When the set point and type F parameter setting functions are inhibited neither the set point nor the type F parameters can be changed while their values can still be displayed The type C parameters on the other hand being password protected can also be set from the keypad following the procedure described previously With the remote control disabled only the values of the parameters can be displayed but they cannot be modified in addition the mute defrost continuous cycle and aux functions are disabled Note If H2 2 or H2 3 is set on the remote control this is immediately disabled when pressing ESC To re enable the remote control set H2 0 or H2 1 from the keypad on the user terminal on the supervisor or in VPM t1 t2 t
136. nd allow a more gradual and slower action Par Description Def Min Max UoM cP1 Initial valve position when control starts 30 0 100 Tab 6 aq Initial valve position maintenance time after defrost parameter Pdd At the end of a defrost during the dripping phase the expansion valve can be forced open to the initial value set for cP1 for a time equal to Pdd This means greater immunity of the unit to return of liquid to the compressor rack due to an excessively high evaporator temperature Par Description Def Min Max UoM Pdd _ Initial valve position maintenance time 10 0 30 min after defrost Tab 6 ar Valve standby position parameter PSb This indicates the position as the absolute number of steps that the valve must move to after having completely closed to restore the elastic operating conditions of the valve spring by releasing the compression for stepper valve only Note the value of this parameter represents the absolute position of the valve during the closing phase value read using the advanced parameter PF on the supervisor Par Description Def Min Max UoM PSb _ Valve standby position 0 0 400 step Tab 6 as Enable fast update of the valve parameters to supervisor parameter Phr This is used to enable the fast update to the supervisor of the variables relating to the electronic expansion valve such as PF absolute
137. nections between the instrument and the loads is the installer s responsibility error at 25 C 10 ppm 45 3 min year error in the temp range 10160 C 50 ppm 27 min year Clock ageing lt 5 ppm 42 7 min year Discharge time 6 months typical 8 months maximum Recharge time 5 hours typical lt 8 hours maximum Operating temperature MXxxxxxx A B C G l x 10T60 C MXxxxxxx M N O x 10T50 C Index of protection IP00 Operating humidity lt 90 RH non condensing Storage temperature 20170 C Storage humidity lt 90 RH non condensing Environmental pollution 2 normal PTI of the insulating materials printed circuits 250 plastic and insulating materials 175 Period of stress across the insulating parts long Category of resistance to fire category D Class of protection against voltage surges category III Type of action and disconnection 1C relay contacts microswitching Construction of the control device integrated electronic control device Classification according to protection against electric shock _ Class 2 when suitably integrated Device designed to he hand held or integrated into equipment designed to be hand held pa Software class and structure Class A Cleaning the front panel of the instrument only use neutral detergents and water Main and secondary display External i 2 i up to 10 m with shielded cable AWG22 power supply rx tx gnd Maximum distance between controller and display m to 100 mt only one terminal can be nece With
138. neetetetet 49 terminals and CONMECHONS nmenmnennnennnnnnnnnnnnnnn 3 6 10 Protectors scsssstsstststeststusteisestesistnstssestesistnsteiistaeeee 52 2 5 Expansion board 0 to 10 Vdc output MX3OPA1002 terminals and COMMECEIONS scscscsvsstststssssssestststststseineetetstetee 3 7 OPTIONAL CONFIGURATIONS 55 2 6 FUNctioNal diagrams csssssssssecsssseesssseesssssesesssssessssesanessesnseseesssteee 14 71 Other configuration parameters 55 2 7 Connecting the MCHRTF module ou esesessssesessssesessestsseesseenee 14 2 8 General connection diagram cssssssssseessssseseusssssesssssssnessessseeesseees 15 8 TABLE OF PARAMETERS 57 DiGi Instala OM isma 16 2 10 Programming key COPY S t UP sssssssssssssssssssssssnseessseesssseeessseees 16 9 ALARMS AND SIGNALS 6 2 11 Commissioning tool VPM Visual Parameter Manager 17 AEST aT e 63 2 12 Setting the default parameters loading the parameter sets 18 GD AVAUTIAS iiiaae 63 3 USER INTERFACE 19 9 3 Display alarm log keee 63 SOOO 9 4 HACCP alarms and display cssccssccsscesscsssesesesssetscetastsstssetastee 63 3 1 User terminal and remote displa nnnnnnnnnnnnnnnnnnnnnne 19 9 5 Alarm parameters cecscsssstssesseststetustsntsietsteuetsee 65 Bae Keypad senesan taut tatitns 20 9 6 HACCP alarm parameters and activating monitoring 66 BB PROPANE coriis iai iii 21 3 4 Example setting current date time and day night time bands 22 10 TECHNICAL S
139. nfigure this function see parameter H4 e activation of the alarm relay if configured see parameters H1 H5 H7 e deactivation of the compressor solenoid output to configure this function see parameter A6 Note activation of the external alarm shuts down the evaporator fans only if these follow the status of the compressor output as set for parameter F2 When the compressor is shut down due to an external alarm the compressor ON time is ignored parameter c3 MPXPRO 0300055EN rel 1 3 07 03 13 32 CAREL 2 Delayed external alarm The operation of this alarm depends on the setting of parameter A7 delay time for delayed external alarm e A7 0 signal only alarm on the display normal operation of the controller is not affected default A720 alarm similar to the immediate external alarm activation is delayed by the time set for A7 3 Enable defrost Used to disable any defrost calls When the contact is open all defrost calls are ignored Parameter d5 can be used to delay activation Note if the contact is open while a defrost is in progress this is immediately stopped the defrost icon flashes on the display indicating the defrost call is active this starts again when the contact closes e this function may be useful to prevent defrosts on controllers exposed to the public during store opening hours and to be able to perform special hot gas defrosts 4 Defrost call The
140. ng diagram for the MPXPRO main board in the version the electrical panel OFF with 5 relays The connectors are screen printed to simplify the electrical connections Power Supply AC 115 230 V 200 mA max L N 3 Il 0 ow 5 a EJ R o zA ko Sa a ow lt a 3 fe ral m a MX30 H AC 115 230 V Expansion board 200 mA max 0 to10 Vdc Analog output MX3O0PA10 PWM driver MX30PPWM BEAR EV driver MX3OPSTP MX30P48500 only for slave models MX30S M ted SS 2 y E y GEER 6 4 AN O 10 10 AN O 10 2 AN O 6 4 AN O 6 4 A N O 6 4 A N C 6 4 A N C EN60730 1 CLOCK and SERIAL INT MX30P485 Maximum currents with removable vertical connectors cod MX30 C 1 0 For more details please refer to the technical leaflets MXOPZKEYAO with rel 2 x IROPZKEYAO with rel 1 x To be used only with control switch off no Power Supply oon a gt ble Fig 2 f Terminal Description 1 Power supply Terminal Description 2 230 Vac 50MA max mod MX30 E 30 GND Multifunction analogue digital input 115 Vac 100mA max mod MX30 A 32 S5 DI2 NTC PTC PT1000 NTCL243 probe 3 O Relay 1 EN6
141. ng pressed Prg mute for 5 seconds When setting the set point the new value is saved after confirming with Set 3 4 Example settingcurrentdate timeandday night time bands Setting the current date time Procedure 1 pressPrg mute for5 seconds this accesses the list of type F parameters 2 press Prg mute the first category of parameters Pro is shown 3 pressthe UP DOWNbuttonsuntilreachingcategory rtc highlighted by the clock icon at the top right 4 press Set parameter tc is displayed Press Set parameter y is displayed followed by two digits that indicate the current year 5 press Set and set the value of the current year e g 8 2008 press Set again to confirm 6 presstheUP button toselectthenext parameter M month and repeat steps 3 4 and 5 for parameters M month d day of the month u day of the week h hour m minutes 7 to return to the list of main parameters press Prg mute Fig 3 g MPXPRO 0300055EN rel 1 3 07 03 13 CAREL Par Description Def Min Max U O M tc _ Date time Press Set 2 y Date time year 0 0 99 year M__ Date time month 1 1 12 month d Date time day of the month il 1 31 day u Date time day of the week 6 1 7 day h Date time hours 0 0 23 hour n__ Date time minutes 0 0 59 min Setting the day night time bands Procedure 1 access the type C parameters as described in the corresponding parag
142. o dipswitches accessible when removing the cover the programming key can run the following functions e UPLOAD Load the parameters from a controller to the key see Fig 2 1 the key acquires all the parameters available on the controller DOWNLOAD Copy from the key to a controller see Fig 2 q the key only transfers the operating parameters to the connected controller EXTENDED DOWNLOAD Extended copy from the key to a controller see Fig 2 r the key transfers all the parameters operating and unit to the connected controller A Important the copy and extended copy of parameters can only be performed between compatible instruments that is with the same or higher firmware revision e g copy from 2 2 to 2 4 not vice versa The UPLOAD DOWNLOAD and EXTENDED DOWNLOAD functions are performed as follows a opentherear cover ofthe keyandsetthe two dipswitches based onthe desired operation b close the cover power up the key and plug the key into the connector on the controller c press and hold the button until the red LED flashed briefly after around 5 10 s the button can still be held When the button is released the LED stays on red until the end of the operation which may last up to a maximum of 45 sec The operation is completed successfully when the green LED comes on With the button released the green LED goes off after around 2 seconds Other signals or flashing of the LEDs indicate that problems have
143. of he LOP protection This integration time acts in parallel to normal PID control PL2 0 gt LOP protection and alarm disabled PL3 represents the alarm activation delay after exceeding the LOP hreshold When the alarm is activated the following occur message LOP shown on the display e the buzzer is activated The alarm features automatic reset when the evaporation pressure rises above the threshold PL1 PL3 0 gt LOP alarm disabled Manual valve positioning from supervisor parameters only visible on the supervisor Par Description Def Min Max UoM PMP Enable manual expansion valve 0 0 1 positioning 0 disabled 1 enabled PMu Manual valve position 0 600 step Tab 6 bb PMP is used to enable disable manual positioning of the valve e PMP 0 manual positioning disabled PMP 1 manual positioning enabled If manual positioning is enabled this is used to set the manual opening of the electronic valve The value is expressed in steps for stepper valves and as a for PWM valves Enabling high current valve driving Par Description Def Min Max UM Phe Enable high current valve driving 0 0 1 0 disable 1 enable Tab 6 bc Set Phc to 1 when E3V45 or higher valves are used e Phc 0 high current disabled Phc 1 high current enabled Read only variables Par Description Def Min Max UoM PF V
144. of errors on both probes the controller switches to duty setting operation see paragraph 6 6 Example Sm fault in daytime operation with 4 50 St 4 Sr 0 Sm 8 ro recommended 0 8 8 The new control probe will be Sr with 100 4 100 St St roe Therefore St 4 8 100 50 100 0 If the fault is on Sr the new control probe will be Sm with 4 100 St St roe Therefore St 4 8 50 100 8 Maximum and minimum temperature monitoring parameters r5 rt rH rL For the procedure to enable monitoring see paragraph 3 7 Par Description Def Min Max UoM rt Duration of current maximum and mini 0 999 hour mum temp monitoring session tH__ Maximum temp acquired in the session E CPF rL___ Minimum temp acquired in the session 4 Cre rs Maximum and minimum temperature 0 0 10 monitoring probe 0 monitoring disabled 1 control probe Sreg 2 virtual probe Sv 3 outlet probe Sm 4 defrost probe Sd 5 intake probe Sr 6 superheated gas temp probe tGS 7 saturated evaporation temperature probe tEu 8 auxiliary defrost probe Sd2 9 auxiliary probe Saux 10 auxiliary probe 2 Saux2 Tab 6 5 ON time for duty setting operation parameter c4 Duty setting is a special function used to maintain control in emergency situations with errors in the temperature control probes until the service intervention
145. of slaves in the local network HO Serial or Master Slave network address Tab 4 c The parameters can be configured from the user terminal or the remote control If using the remote control a terminal with display and infrared receiver IR is required After having powered up the controller 1 the first parameter is displayed P2 type of probe group 2 S4 S5 2 press Set to display the value of the parameter 3 press UP DOWN to change the value 4 press Set to confirm the spanner icon disappears indicating that the setting has been made 5 press UP and repeat steps 2 3 4 for the following parameters P3 Fd FE U6 L6 P1 PH In Sn HO 6 press Prg mute for 5 seconds to exit the guided commissioning procedure g Q R Fig 4 p P2 Type of probe group 2 S 4 S5 Used to select the type of temperature probe to be used for inputs S4 S5 Par Description Def Min Max UoM P2 Type of probe group 2 S4 S5 0 0 3 0 NTC Standard Range 50T90 C 1 PTC Standard Range 5071150 C 2 PT1000 Standard Range 50T150 C 3 NTC L243 Standard Range 50T90 C Tab 4 d Note NTC L243 PTC PT1000 probes can only be set in the full optional models or models with EEV driver To assign the functions to the other probes see parameters FA Fb Fc Fd FE FF FG FH Fl FL FM For probe calibration s
146. offline 68 0 0 1 A A 0 not enabled 1 enabled Fan Evaporator fans FO Evaporator fan management 39 0 0 2 C L 0 always on 1 activation based on Sd Sv or Sd Sm in double thermostat 2 activation based on Sd F1 Evaporator fan activation threshold only if FO 1 or 2 39 5 0 50 0 50 0 C F F2 Evaporator fans with compressor off 39 1 0 1 C SA 0 see FO 1 always off F3 Evaporator fans during defrost 39 1 0 1 9 0 on 1 off Fd Post dripping time after defrost fans off with control active 39 1 0 15 min EC A Frd Fan activation differential including variable speed 39 2 0 0 1 20 C F F F5 Evaporator fan cut off temperature hysteresis 1 C 39 50 0 F1 50 0 CPF F L F6 Maximum evaporator fan speed 50 100 F7 100 A A F7 Minimum evaporator fan speed 50 0 0 F6 A Rh F8 Evaporator fan peak time 50 0 0 240 s A 0 function disabled F9 Select fan control with output PWM1 2 with phase cutting speed control 50 1 0 1 E A 0 by pulse 1 by duration F10 Evaporator fan forcing time at maximum speed 50 0 0 240 min A 0 Eud function disabled Eud Electronic valve pi Electronic valve 28 52 0 0 2 A A A 0 not used 1 PWM valve 2 CAREL F V valve P3 Superheat set point 40 52 10 0 0 0 25 0 K A P4 Proportional gain 53 15 0 0 0 100 0 A A P5 ntegration time 53 150 0 900 s A A A 0 function disabled P6 Derivative time 53 50 0 0 100 0 s A A A 0 function disabled P7 LowSH low superheat thr
147. on all controllers without needing additional wiring Likewise the virtual digital input from the supervisor can also be propagated Parameter A8 is used to select the function activated on each Slave If needed different functions can be configured on the Slaves meaning a change in status of the contact on the Master activates different functions on the Slaves Select digital input propagated from Master to Slaves parameter A9 This can be configured only on the Master controller enabling the propagation via tLAN of the status of one of the digital inputs on the Master or sent by the supervisor to the Slaves Based on the value associated with the parameter MPXPRO propagates only one of the digital contacts across the LAN according to the table on the side The Slaves receive the status of the virtual digital input and activate the corresponding function according to parameter A8 Par Description Def Min Max UoM A9 Select digital input propagated from Master 0 0 5 to Slaves only on Master 0 from supervisor 3 DI3 1 D11 4 Di4 2 Dl2 5 DI5 Tab 6 1 Example 1 Example 2 To propagate the curtain switch To propagate the virtual digital function from Master to Slave activated by digital input 1 on the Master input from the supervisor and activate the continuous cycle in the Master Slave network MPXPRO 0300055EN rel 1 3 07 03 13 42 CAREL Set Set
148. onal board for controlling an AC or DC PWM electronic expansion valve Model MX3OPPWMO also has a 0 to 10 V modulating output for controlling the evaporator fans and anti sweat heaters Fig 1 Fig 1 USB RS485 converter CVSTDUMORO The USB RS485 converter is an electronic device that is used to interface an RS485 network to a personal computer using the USB port Fig 1 h Fig 1 m 9 MPXPRO 0300055EN rel 1 3 07 03 13 CAREL USB tLAN converter IROPZTLNOO VPM programming tool Visual Parameter Manager Converter used to connect a personal computer to an MPXPRO controller The program can be downloaded from http ksa carel com Once using the special connection available on the user terminals or remote running on the computer the tool can be used to commission the display and with the VPM program Visual Parameter Manager to controller edit the parameters and update the firmware The USB tLAN complete the configuration and commissioning operations converter is required ES Fig 1 n USB I2C converter IROPZPRGOO Converter used to connect a personal computer to an MXOPZKEYAO programming key so as using the VPM program Visual Parameter Manager to read edit and write the parameters In turn the programming key can be used to program other controllers or read the parameters for example to copy the parameter settings entered on the keypad of other controllers Remote control IRTRMPX000
149. ow of refrigerant inside an individual evaporator Two evaporators in parallel cannot be managed with just one electronic expansion valve The NTC PTC PT1000 NTCL243 temperature probe must be installed near the evaporator outlet according to the standard installation methods see the installation notes on the EV instruction sheet Suitable thermal insulation is recommended CAREL offers special types of probes designed to simplify installation in contact with the refrigerant pipe NTCO30HFO1 for Retail use IP67 3m 50T90 C 10 pcs NTCO60HFO1 for Retail use IP67 6m 50T90 C 10 pcs To measure the saturated evaporation temperature different types of probes can be used in particular the following can be configured advanced parameter FE Oto5Vratiometric pressure probe recommended by CAREL NTC PTC PT1000 temperature probe 4to 20 mA active pressure probes powered externally MPXPRO can measure the saturated evaporation temperature using a normal NTC PTC PT1000 NTCL243 temperature probe see price list This solution even if economically convenient requires careful installation and in any case does not offer the same precision as a ratiometric probe CAREL recommends the use of ratiometric probes for reading the evaporation pressure which is automatically converted to the saturated temperature using the specific tables for the type of refrigerant used Description of operation The values r
150. position in number of steps stepper valve only SH superheat e PPV position as a percentage tGS superheated gas temperature e tEu saturated evaporation temperature Useful in the commissioning phase or start up Phr 0 fast update disabled update every 30 s Phr 1 fast update enabled update every 1 s CAREL Par Description Def Min Max UoM Phr Enable fast update of the valve parameters 0 0 1 to supervisor 0 fast update disabled Tab 6 at Important in the event of power failures parameter Phr will be reset to zero A Superheat offset for modulating thermostat parameter OSH This function is used to reduce or completely eliminate the typical temperature swings caused by sudden activation deactivation of the solenoid valve The function is activated based on the refrigeration controller control temperature and affects the cooling capacity of the electronic valve In particular the function is activated when the control temperature falls below half of the differential rd In this band the superheat set point P3 is increased by a term proportional to the parameter OSH The effect of this action is the gradual advanced closing of the electronic valve which makes the decrease in temperature inside of the refrigeration controller slower and more stable In this way the actual temperature of the cabinet can be kept very stable and near the set point without ever having to c
151. probe alarms rE E1 E2 E3 etc and errors EE EF Etc Edc alternating with the message OFF When OFF the following alarms are reset high and low temperature open door alarm don e valve LSA LowSH MOP Double thermostat The double thermostat function is activated by setting parameter rd2 gt 0 It is used to adapt automatically that is without changing the set point and without an external signal control of the unit based on a change in compressor load especially when switching from day to night and vice versa In fact at night the showcase curtains are closed there is less heat exchange with the surrounding air and the compressor works less To do this two set points and two differentials are defined Stand rd associated with the outlet probe St2 and rd2 associated with the intake probe Par Description Def Min Max UoM St2 Intake probe set point with Double 50 ial f2 WCPF thermostat rd2__ Differential St2 with Double thermostat 0 0 20 GPF 0 0 function disabled Tab 6 q The control request occurs when this is active on both probes as if there were two thermostats in series At night the intake probe is controlled and the outlet probe always signals the request in the day the outlet probe is controlled and the intake probe always signals the request Sr Sm Cooling Fig 6 d MPXPRO 0300055EN rel 1 3 07 03 13 44 R ON
152. r 8mm on surface Insulation guaranteed by the MXxo000 E A xx 3750 V insulation power supply primary insulation from relay outputs 3mm in air 4mm on surface 1250 V insulation S1 S2 and 3 NTC MXxxxxOxxx or NTC PTC PT1000 and NTC L243 MXxxxx 1 2 3 4 5 6 7 8 Xxx S4 D11 5 DI2 NTC MXxxxxOxxx or NTC PTC PT1000 and NTC L243 MXxxxx 1 2 3 4 5 6 7 8 xxx voltage free contact contact resistance lt 10 Q closing current 6 mA NTC MXxxxx0xxx or NTC PTC PT1000 and NTC L243 MXxxxx 1 2 3 4 5 6 7 8 xxx S6 DI3 0 to 5 V ratiometric MXxxxxxxxx Inputs voltage free contact contact resistance lt 10 Q closing current 6 mA NTC MXxxxx0xxx or NTC PTC PT1000 and NTC L243 MXxxxx 1 2 3 4 5 6 7 8 xxx S7 D14 0 to 5 V ratiometric MXxxxxxxxx 4 to 20 mA 0 10 V MXxxxx 1 2 3 4 5 6 7 8 xxx voltage free contact contact resistance lt 10 Q closing current 6 mA DI5 voltage free contact contact resistance lt 10 Q closing current 6 mA aximum distance between probes and digital inputs less than 10 m Note in the installation it is recommended to separate the power and load connections from the probe digital input display and supervisor cables 10 kQ at 25 C range from 50 C to 90 C Std CAREL NTC measurement error 1 C in range from 50 C to 50 C 3 C in range from 50 C to 90 C Std CAREL PTC 985 Q a 25 C range from 50 C to 150 C specific model 2 C in range from 50 C to 50 G 4 C in range from 50 C to
153. r each evaporator assuming that the pressure drop in that section of the line is negligible MPXPRO 0300055EN rel 1 3 07 03 13 CAREL 5 BASIC FUNCTIONS Probe positioning and purchase codes The following probes are recommended by CAREL evaporator outlet temperature probe NTC HFO1 evaporation pressure probe SPKTOO13RO0 ratiometric 1 to 9 3 bars SPKTOO53RO ratiometric 1 to 4 2 bars SPKTO033RO0 ratiometric 1 to 34 5 bars SPKTOO53RO raziometrica 1 0 4 2 bar SPKTOO13RO0 raziometrica 1 0 9 3 bar Dp Dp P r PKTO043RO0 raziometrica 0 0 17 3 bar SPKTO033RO0 raziometrica 0 0 34 5 bar PKTOOB6RO raziometrica 0 0 45 0 bar PKTO011S0 raziometr PKT0041S0 raziometrica 0 17 3 bar PKTO031S0 raziometrica 0 34 5 bar SPKTOOB1S0 raziometrica 0 45 0 bar SPKTOOG1S0 raziometrica 0 60 0 bar case ambient temperature probe NTC HPOO ambient temperature and humidity probe DPWC111000 4 to 20 mA DPWC115000 0 to 10 Vdc DPWC114000 RS485 serial probe ica 1 9 3 bar The temperature and humidity probes must not be positioned too far from the showcases they are measuring At times it is better to install more than one if the supermarket is divided into sections with greatly differing temperature and humidity values frozen section meat section fruit and vegetable section etc glass temperature probe NTCO60W
154. r for the for the complete and advanced management of stand alone or multiplexed showcases or cold rooms with or without built in electronic expansion valve driver It is designed for DIN rail assembly and comes with plug in screw erminals The controller can manage a local Master Slave network with a at maximum of 6 units 1 Master and 5 Slaves Each controller can have its own display read only and or user terminal display plus keypad for programming or alternatively the user terminal can be connected o the Master controller which then displays the parameters for all controllers connected in the network The platform includes a wide range of models differing in terms of type of controller Master or Slave he number of relay outputs available 3 or 5 on the Slave controller the ype of probes that can be connected NTC only and 0 to 5 V ratiometric or NTC PTC PT1000 NTC L243 0 to 5 V ratiometric and active 4 to 20 mA 0 to 10 V the type of built in driver for CAREL stepper or PWM electronic expansion valve whether or not there are two PWM outputs on the main board and whether or not there is a 0 to 10 Vdc output on the driver board See the table below Main features compact structure with built in driver for CAREL stepper or PWM valve e Ultracap technology for emergency closing in the event of mains power failure no solenoid valve is required if the EEV valve is installed in direct way and the size is smaller than E3V45
155. r6 1 Control probe Sreg _ Virtual probe Sv Virtual probe Sv Intake probe Sr Set point St St r4 Tab 5 p tS2 tE2 tE1 tS1 Fig 5 g During the daytime e Setpoint St e light on control on virtual probe Sv During the nighttime Setpoint St r4 light off control on Sr if r6 1 or on Sv if r6 0 Weighted control and double thermostat can be used for automatic changeover to night time operation without an external signal Weighted control This function compensates for the disadvantages of control based solely on the outlet probe or the intake probe The control probe becomes the virtual probe Sm 100 4 Sre 4 100 The weighted average of the outlet and intake probes is used to compensate for the mixing of air from outside the display case Normally the weight of 4 is set to 50 and the value of the virtual probe can be chosen for both display and temperature recording The value of the virtual probe thus becomes the mean value of the outlet and intake probes and the measurement that best corresponds to the temperature of the produce Another advantage is automatic adaptation to night time operation with the curtain closed without needing an external signal When the curtain is open there is immediately an increase in load on the evaporator consequently the outlet temperature is lowered so as to keep Sv the average temperature constant T night day Sr Sv Sm t
156. raph and select the RTC category 2 pressUP DOWNandselecttheparentparametertS1 timeforswitching from night to day 3 press Set the parameterdfollowedis displayed by one ortwo digits that indicate the day for switching from night to day mode as follows e 0 switching disabled 1 to 7 Monday to Sunday 8 Monday to Friday 9 Monday to Saturday e 10 Saturday amp Sunday 11 every day 4 pressSettoconfirmandgotothenextparameters h hour m minutes 5 press Set to confirm and Prg mute to go to parameter tE1 time for switching from day to night day night night t tS tE Fig 3 h Note 8 time bands can be set for each day setting parameters tS1 to tS8 and tE1 to tE8 3 5 Display Slave controller status from the Master user terminal virtual console Procedure valid for Master Slave networks If a user terminal is connected directly to the Master controller the status of any Slave controller can be displayed as if the terminal were connected to the Slave controller Procedure 1 press Prg mute Set and DOWN together 2 select the Slave controller to display u1 Slave 1 u5 Slave 5 3 press Set to confirm 4 the user terminal now behaves exactly as if it were connected to the chosen Slave in terms of icons and texts on the display 5 press Prg mute to return to the standard display on the Master The normal display is restored in any case after 1 minute if no any button is pressed The example
157. ration of air dryers The defrost cycle thus becomes the condensate discharge cycle which needs to be started at short intervals minutes and for very brief periods seconds 47 Dripping time after defrost parameter dd Par Description Def Min Max UoM dd Dripping time after defrost fans off 2 0 15 min 0 no dripping Tab 6 baTab 6 9 f This parameter is used to stop the compressor and the evaporator fans following a defrost so as to allow the evaporator to drip The value of the parameter indicates the off time in minutes If dd 0 no dripping time is enabled and at the end of the defrost control resumes immediately without stopping the compressor and the fan if active Pump down phase duration Par Description Def Min Max UoM dH1 Pump down phase duration 0 0 999 S 0 pump down disabled Tab 6 ae The pump down phase is the period in which the evaporator is emptied of liquid refrigerant Parameter dH1 defines the duration of the pump down phase during all types of defrost heater or hot gas Setting dH1 0 disables the pump down phase A Important the controller does not have two separate outputs to manage the compressor and solenoid valve Type of multiplexed hot gas defrost Par Description Def Min Max UoM dHG Type of hot gas defrost 0 0 1 0 equalizing valve normally closed 1 equalizing valve normally open Tab 6 a
158. re checking if the value is out of range that is MPXPRO first determines the values read by the probes correcting them based on the calibration parameters then checks if these are outside of the range specified and where necessary generates a probe error Example To decrease the temperature measured by probe S4 by 3 C set c4 3 Par Description Def Min Max UoM c4_ Probe 4 calibration 0 20 20 COGER c5_ Probe 5 calibration 0 20 20 CEER c6_ Probe 6 calibration 0 20 20 CC F barg RH c7_ Probe 7 calibration 0 20 20 C F barg RH cE Saturated evaporation tempe 0 0 20 0 20 0 OOF rature calibration Tab 6 g Important the value read by the probe and already corrected can only be displayed locally and not using the virtual console display Slave controller status from Master terminal A 6 2 Digital inputs Configure function of virtual digital input par A8 Par Description Def Min Max UoM A8 Config function of virtual digital input 0 0 8 0 input not active 1 immediate external alarm 2 delayed external alarm 3 enable defrost 4 start defrost 5 door switch with compressor and evaporator fans OFF 6 remote ON OFF 7 curtain switch 8 start stop continuous cycle 9 light sensor Tab 6 h As already mentioned in a Master Slave network using a virtual digital input MPXPRO can activate the same digital input
159. relating to the probe defined by parameter AA as well as the low temperature alarm with threshold AL2 relating to the probe defined by parameter AA2 A Important for the correct activation of the low temperature alarms set the parameters as follows AA outlet probe AA2 intake probe Note 1 The continuous cycle cannot be activated if e the duration of the continuous cycle is set to 0 cc 0 e the measurements of the probes defined by AA and AA2 have exceeded their respective thresholds AL AL2 e the device is OFF 2 The continuous cycle remains in standby if the compressor protection times are set C1 C2 c3 e the immediate or delayed alarm from external digital input delays he activation of the compressor e defrost dripping post dripping are running e the door is open When door opens the continuous cycle is stopped It restarts for the remaining time when the door is closed 3 The continuous cycle ends by pressing of UP amp DOWN for more than 5 seconds when reaching the low temperature threshold AL or AL2 in double thermostat whichever is reached first e atthe end of the time cc e when the controller is switched off from the supervisor logical OFF from the supervisor Continuous cycle with shared control status For the description of shared control status see paragraph 5 1 The activation of the continuous cycle on the Master controller implies that all the related S
160. relating to the compressor are explained all of which are advanced level parameters 6 1 Probes analogue inputs For an introduction to the probe parameters see paragraph 5 1 Below is Minimum and maximum value probe S6 and S7 parameters L6 U6 L7 U7 MPXPRO as well as the common NTC PTC and PT1000 probes can connect one of the following to inputs S6 and S7 one 0 to 5Vdc ratiometric probe powered directly by the controller connected to the input S6 or to the input S7 e one 4 to 20 mA active probe not powered by the controller connected to input S7 e one 0 to 10 Vdc active probe not powered by the controller connected to input S7 a description of the advanced parameters relating to the probes These types of probes require definition of their range of measurement that is the maximum value and minimum value of measurement are set using parameters L6 L7 U6 and U7 Type of probe group 1 parameter P1 Par Description Def Min Max UoM 160 if 5 0 a Set the probes type S1 S2 3 See the paragraph 5 1 U6 Maximum value of probe 6 9 3 L6 800 if S lt 1 Perg RH Par Description Def Min Max__ UoM L6 Mini fprobe6 1 20 if 5 0 U6 barg RH P1__ Type of probe group 1 S1 S3 0 0 3
161. s relative humidity greater than the 90 or condensing strong vibrations or knocks exposure to continuous water sprays exposure to aggressive and polluting atmospheres e g sulphur and ammonia fumes saline mist smoke to avoid corrosion and or oxidation strong magnetic and or radio frequency interference avoid installing the controllers near transmitting antennae exposure of the controllers to direct sunlight and to the elements in general Q Important when connecting the controllers the following warnings must be observed e incorrect connection to the power supply may seriously damage the controller use cable ends suitable for the corresponding terminals Loosen each screw and insert the cable ends then tighten the screws and lightly tug the cables to check correct tightness separate as much as possible the probe and digital input cables from the power cables to the loads so as to avoid possible electromagnetic disturbance Never lay power cables and probe cables in the same conduits including those in the electrical panels avoid installing the probe cables in the immediate vicinity of power devices contactors circuit breakers etc Reduce the path of the probe cables as much as possible and avoid enclosing power devices m gt Note when connecting the RS485 serial network connect the shield to the GND terminals on all controllers do not connect the shield to the earth on the el
162. s IA Anti sweat heater temperature output StU Working set point PEu Evaporation pressure sd2 Aux defrost probe temp SA1 Auxiliary probe 1 temp SA2 Auxiliary probe 2 temp MPXPRO 0300055EN rel 1 3 07 03 13 24 CAREL Outputs area directly override the digital outputs Used to manually override the status of the various digital outputs Manually overriding an output disables the normal operation of the instrument that is the MPXPRO controller does not act on the overridden outputs The MPXPRO display signals that at least one output has been manually overridden by switching on the spanner icon The override using the 4 buttons in this section is cyclical that is the function changes status cyclically each time the specific button is pressed The override starts when the button is first pressed The status of the most common logical functions can be overridden o kee pa y R Solenoid compressor Defrost Light Fans MPXPRO displays the outputs that are active by switching on the corresponding icon Pressing the Restore ALL Fa button briefly 1 sec deactivates the overrides on the digital outputs in this section Pressing and holding the Restore ALL button disables all the overrides activated from the remote control Once the overrides have been disabled the controller automatically resumes normal operation Solenoid Restore ALL A Important overriding the status of the
163. same day if both td1 and td2 are set when the defrost events overlap only the sequence of defrost that start first are performed CAREL 5 7 Evaporator fans The evaporator fans can be managed if required according to the temperature measured by the defrost and control probes The deactivation threshold is equal to the value of parameter F1 and the hysteresis is equal to the value of Frd Note during the dripping waiting time in the event of network defrosts and during the dripping time and post dripping time if set the evaporator fans are always off Fixed speed fans Below are the parameters involved in managing fixed speed fans related by default to relay 4 and a example of the trend based on the difference between the evaporator temperature and the value of the virtual probe FO 1 If the double thermostat function is enabled activation is based on the difference between the evaporator temperature and the outlet probe temperature If FO 2 activation depends solely on the evaporator probe temperature Par Description Def Min Max UoM FO Evaporator fan management 0 0 2 0 always on 1 activation based on Sd Sv or Sd Sm in double thermostat 2 activation based on Sd F1 Evaporator fan activation threshold 50 50 0 50 0 CAF only if FO 1 or 2 Frd Fan activation differential including 2 O15 20 SCF variable speed Tab 5 v F1 Frd FAN
164. sents the temperature below which the fans are activated There is a fixed hysteresis of 1 C for deactivation Par Description Def Min Max UoM F5 Evaporator fan cut off temperature hyste 50 F1 50 C F resis 1 C Tab 5 x Key Sd Evaporator probe F1 Evaporator activation threshold Sv Virtual probe Frd Fan activation differential F5 Fan cut off temperature t Time MPXPRO 0300055EN rel 1 3 07 03 13 CAREL 5 8 Electronic valve LowSH low superheat threshold param P7 The protector is activated so as to prevent the return of liquid to the Superheat set point parameter P3 compressor due to excessively low superheat values When the superheat Par Description Def Min Max UoM value falls below the threshold the system enters low superheat status P3___ Superheat set point 10 0 0 0 25 0 K and the intensity with which the valve is closed is increased the more SH___ Superheat z K the superheat falls below the threshold the more intensely the valve will tGS__ Superheated gas temperature gt OF close The LowSH threshold must be less than or equal to the superheat tEu _ Saturated evaporation temperature z CF A z bods x a set point The low superheat integration time indicates the intensity PPU _ Valve opening percentage al Tab 5 y of the action the lower the value the more intense the action See
165. separately e in the event of illegal disposal of electrical and electronic waste the penalties are specified by local waste disposal legislation Warranty on materials 2 years from the date of production excluding the consumable parts Certification the quality and safety of CAREL S p A products are guaranteed by the ISO 9001 certified design and production system MPXPRO 0300055EN rel 1 3 07 03 13 CAREL Content 1 INTRODUCTION 7 6 ADVANCED FUNCTIONS 4l Mi MOJE Sn ansen EEREN 6 1 Probes analogue iNPUts ssssssscsssssseesesssessssssesssssesssssssessseseaseeeee 4 1 2 Functions and main characteristics 6 2 Digital INputS ssssssssessecssssssesussssesussseesssssesssssseesasssseusnssesssseseuasetsee 42 63 AmAlO BUG OUT PUES anisining 42 EE eMM 64 Digital OU PUIS n 43 2 1 MPXPRO DIN rail assembly and diMeNsiONS sssessssssesesnsseeessseees 11 G5 COND OEE ES A E EES 44 2 2 Main board description of the terminals ssssssssesssssesesseeessseees 12 6 6 COMPrESSOF sscecsssessstsssstivetstinststnetnsietneietntistsenennenensenetesieteee 46 2 3 EV driver expansion board MX3OPSTP SP7 BTE LO E SASAS R EEA DEEE EEE E EEEE 47 terminals and CONNECTIONS sicsmgsicnaiontnirrnanreiecieenesmin 13 6 8 Evaporator AMS ecessecssssesstsssstsetssnetstietstiststisnstistesisteetstnte 49 2 4 PWM driver expansion board MX3OPPWM 6 9 Electronic valve w essststsssvsvessstststsssssetntntntnsesetntntnnns
166. sor off if it was off 31 Note activation of the continuous cycle on the Master means all the dependent Slave observe the compressor management times of the Master controller only parameter cc on the Master has an effect while the values set on the Slaves are ignored This operating mode is only highlighted on the Master user terminal as the Slave controllers ignore the Master control mode This means that a Slave controller serving the Master even in the continuous cycle manages the user interface as if it were in normal control Compressor icon on during cooling request and off when no request Attempts to activate continuous cycle on a Slave serving the Master are ignored both local and sent from the Master Note if the Master controller enters duty setting mode the related Slave controllers follow as regards the compressor management times and the user interface does not show the icon flashing when the compressor is off due to the fact that they ignore the Master control mode On the other hand if the Slaves enter duty setting mode due to lack of communication with the Master in this case they manage the user interface correctly Calibration parameters c1 c2 c3 MPXPRO can adjust the values read by the probes and some of the internal variables In particular c1 to c3 are used to increase or decrease the values read by the physical probes connected to the inputs S1 S2 S3 if configured as temperat
167. stalled the drivers cannot be fitted in this case the driver board with the 0 to 10 Vdc output incorporated on MPXPRO Slave boards MX30S the RTC and RS485 serial interface accessory MX30P48500 can be added 2 Master Slave network with user terminals and remote display The Master controller connected to the supervisor network acts as the gateway and coordinates the functions of the 5 Slave controllers connected in the tLAN Each controller has its own user terminal and remote display p aan a Patch CIS GEBE forsupenvsion i master mse AN 3 y y T wrx IT mx om mx E nx ME ME E E slave 2 slave 3 slave 4 slave 5 tLAN 3 tLAN 3 tLAN 3 tLAN 3 AEEA wo maa Aaaa ga FERAI 1568 18GB Fig 2 k For the electrical connections see the general connection diagram in par 28 MPXPRO 0300055EN rel 1 3 07 03 13 CAREL 3 Master Slave network with shared user terminal and local remote display PlantVisorPRO PlantWatchPRO per supervisione for supervision E ME E E ME a A
168. t performed and after the safety time dl a new defrost starts Key Maximum interval between consecutive dl t time defrosts td1 totd3 Programmed defrosts DEF Defrost Staggered defrosts The function is used to perform a series of daily defrosts by setting just the first using parameter td1 and then indicating the number of defrosts per day using parameter d1S The controller automatically schedules all the defrosts to be performed at regular intervals over the 24 hours following the event defined by td1 The same applies to td2 and dS2 Par Description Def Min Max UoM dis umber of daily defrosts td1 0 0 14 0 Disabled 24 hours 0 mins 8 3 hours 0 mins 2 12hours 0 mins 9 2 hours 40 mins 3 8 hours 0mins 10 2 hours 24 mins 4 6hoursOmins_ 11 2 hours 11 mins 5 4hours 48 mins 12 2 hours 0 mins 6 4hoursOmins_ 13 1 hour 0 mins 7 3 hours 26 mins 14 30 mins d2S_ Number of daily defrosts td2 0 0 14 see d1S Tab 5 u Remember that sub parameter d_ of td1 td2 defines the defrost day as follows d_ Defrost day 0 event disabled 9 Monday to Saturday 1 to 7 Monday to Sunday 10 Saturday to Sunday 8 Monday to Friday 11 every day gt Note if event td1 includes a series of days the programming always ends at 24 00 on the last day If event td1 includes one day only the programming ends at 24 00 on the
169. t from Master to Slave display Slave alarms on the Master sharing of one or more network probes e g network pressure probe management of network or local solenoid valve remote management of Master light and AUX outputs on Slave upload parameters from Master to Slaves Master as gateway to supervisor for all Slaves management of HACCP alarms Installation in direct way refrigerant inlet y refrigerant outlet Model Code Features Master rel Type of relay RS485 Probe usable 2 PWM E V driver PWM driver Slave amp RTC NTC PTC Ratiometric Active probe output amp 0 10 amp 0 10Vdc 0 10 Vdc Board Pt1000 probe 0 10 Vdc Vdc output output output NTC L243 0 5Vdc 4 20 mA MX10MOOEI11 Master 5 8A 2HP 16A 8A 8A _ Y YES NO YES NO NO NO NO NO LIGHT MX10SOOEI11 Slave 5 8A 2HP 16A 8A 8A l YES NO YES NO NO NO NO NO MX10S10EI11 Slave 3 8A 0 16A 0 8A l YES NO YES NO NO NO NO NO Tab 1 a Standard Version Model Code Features Master rel Type of relay RS485 Probe usable 2 PWM E V driver PWM driver Slave amp RTC NTC PTC Ratiometric Active probe output amp 0 10 amp 0 10Vdc 0 10 Vdc Board Pt1000 probe 0 10 Vdc Vdc output output output NTC L243 0 5Vdc 4 20 mA MX30M21HO0 Master _5_ 8A 2HP 16A 8A 8A _ Y YES YES YES YES Y l l
170. ter code IROPZPRGOO is required A Important modifying the set of parameters saved in the MPXPRO memory using the key permanently overwrites the parameters set by CAREL The set of default parameters is never overwritten being stored in a non modifiable area of memory Procedure for setting the default parameters loading the parameter sets Procedure 1 power down the controller 2 press the Prg mute button 3 power up the controller again while holding Prg mute at the end the number 0 is displayed which represents set 0 4 to load the default parameters press the SET button to confirm set 0 otherwise see step 5 5 press UP DOWN to choose the set of parameters from 1 to 6 to be loaded as the working set and confirm by pressing SET 6 at the end of the procedure the display will show the message Std indicating that the procedure has ended 7 if required run the guided commissioning procedure see par 4 3 Note the procedure loads a set of parameters as desired from 1 to 6 The maximum number of parameter sets that can be loaded is limited by the value of parameter Hdn not visible on the keypad and only modifiable using VPM or the programming key For example if Hdn 3 during the procedure only parameter sets from 1 to 3 can be loaded on the controller Par Description Def Min Max U O M Hdn Number of default parameter sets 0 0 6 available Tab 2 h MPXPRO 0300055EN rel
171. ters Pr a cas Set default parameters a If 0 is displayed press set to continue restore parameters on power up Prg Set 5 s Display alarm log Enter password default 44 Alarms See paragraph 9 3 Display alarm log Manual alarm reset Prg 5s rES indicates the alarm has been reset Mute buzzer and disable Prg alarm relay lass HACCP HACCP menu E R F See par 9 4 HACCP alarms and display Tab 3 b The default parameters or any of the sets of parameters loaded inside MPXPRO only have effect on the parameters visible from the user terminal based on the list of parameters The parameters that are not visible on the user termina affected by this procedure MPXPRO 0300055EN rel 1 3 07 03 13 are not 20 CAREL 3 3 Programming The parameters can be modified using the front keypad Access differs according to the type Frequent F configuration C and advanced A parameters The type of parameter is indicated in the table parameters Access to the configuration and advanced parameters is protected by a password that prevents unwanted modifications by unauthorised people The password for the advanced parameters also allows access to all the control parameters this operation must only be performed by qualified personnel Select network unit Master If using a user terminal connected directly to the Master controller this function can be used to choose the desired unit After ha
172. the PI algorithm The output is adapted to control an SSR solid state relay If the load is inductive rHL 1 there is no period and the output is modulated continuously by the PI algorithm In this case the output is adapted for the MCHRTF phase control modules see paragraph 2 7 The percentage of activation OUT for anti sweat heater control depends on the difference between the dewpoint calculated and the value read by the glass temperature probe the value of parameter rHo offset and the value of parameter rHd differential as shown in the following figure The CUTOFF is a constant equal to 5 C and the hysteresis is 1 C i 1 tHo rHd CUTOFF i inl gt lt Fig 6 b Key SdP Dewpoint Svt Glass temperature probe io Offset for anti sweat heater Min Minimum fan speed modulation Hd Differential for anti sweat heater Mae Naaman tn speed modulation OUT Anti sweat control Min minimum output fixed at 10 Max maximum output fixed at 100 The action is proportional only if the estimate of the glass temperature is used and proportional and integral Tint 240 s constant if the actual glass temperature probe is used The aim of the integral action is to bring the glass temperature towards the set point Sdp rHo A Important if the serial probes from the supervisor are used for the propagation of the ambient temperature and humidity values MPXPRO has four auxiliary variables that save the last usefu
173. the side the input of the 0 to 10 Vdc modulating actuator load must have reinforced insulation based on its internal power supply 13 2 4 PWM driver expansion board MX30PPWM terminals and connections PWM Driver PWM valve ZA DC AC output 115 230 Vac 20VA max 5 VA min PWM PWM ac de f POWER SUPPLY N _ PWM valve 115 Vdc RMS 230 Vdc RMS 20W max 5 W min 115 230Vac L Eii ON Use i 25 VA 62 63 1 i max E RA ne PWMac or PWMdc I I valves alternatively MX20PPWM Jos AT Analogic an output only for MX20PPWMO The output Oto 10 Vdemust feature 1 reinforced insulation with reference _ to its internal power supply 3 Fig 2 h Terminal Description 60 L Power supply 61 N 115 to 230 Vac 50 60 Hz 25 VA MAX 62 N Power supply PWM valve Vac 63 L 115 to 230 Vac 50 60 Hz 5 VA MIN 20 VA MAX 64 Power supply PWM valve Vdc 65 105 to 230 Vdc RMS 5 W MIN 20 W MAX 66 Not used 67 Oto 10Vdc output _ Control signal for modulating actuators 68 GND aximum error 2 f s maximum load 2 2 KQ Tab 2 e Note use either AC or DC PWM valves e the input of the 0 to 10 Vdc modulating actuator load must have reinforced insulation based on its internal power supply A Important do not use PWM valves with rectified 230 Vac power supply 2 5 Expansion board 0 to 10 Vdc output MX30PA10
174. the wiring diagrams 1 before performing any operations onthe control board disconnectthe main power supply by turning the main switch in the electrical panel OFF Then remove the plastic side cover and or the covers to make the electrical connections 2 avoid touching the control board as electrostatic discharges may damage the electronic components 3 theindexof protection required forthe application must be ensured by the manufacturer of the display case or by suitable assembly of the controller 4 connect any digital inputs Lnax 10m 5 connectthe power cable tothe valve motor to find the section or cable lenght see terminals and connections section 6 connect the actuators the actuators should only be connected after having programmed the controller Carefully evaluate the maximum ratings of the relay outputs as indicated in Technical specifications 7 program the controller see the chapter User interface 8 forthetLANconnectionoftheMaster Slavenetworkanduserinterfaces use shielded cable and make sure the maximum distance between a controller and its user terminal remote display is 100 m with section of cable not less than AWG22 e the maximum distance between the controllers and the maximum length of the cable between one controller and another is 100 m with section of cable not less than AWG22 Important avoid installing the controllers in environments with the following characteristic
175. tput incorporated Fig 1 e CAREL Master Slave boards MX30 24HOO 0 to 10 Vdc expansion board MX30PA1002 With 2 PWM outputs and PWM driver board with O to 10 Vdc output Optional board used to manage the evaporator fans and anti sweat incorporated heaters with a 0 to 10 Vdc control signal Fig 1 f Fig 1 Stepper EEV expansion board MX3O0PST Optional board for controlling a CAREL E V electronic expansion valve RTC and RS485 interface card MX30P48500 driven by stepper motor Model MX3OPSTPO also has a O to 10 V Optional card that adds the clock RTC and RS485 interface CAREL and modulating output for controlling the evaporator fans and anti sweat Modbus protocol functions to the MPXPRO Slave controllers making heaters them MPXPRO Master controllers Available in version with ultracap technology to ensure the electronic valve closing in the event of power failure to avoid the installation of liquid solenoid valve Fig 1 j User terminal IROOUG 300 and remote display IROOXG 300 The user terminal includes the display and the keypad featuring 4 buttons that pressed alone or in combination are used to program the controller The remote display is used to show system variables Both devices are available in two versions with or without infrared receiver and commissioning port Fig 1 9 user terminal remote display PWM Pulse Width Modulation EEV expansion board MX30PPWM Opti
176. trol status across the tLAN network In this way the Master determines the control status and each Slave operates as a Consequence without consider the parameters set locally This means Slave controllers can be used without outlet and intake probes If the Slave controller is not accessible from the Master duty setting operating mode must be activated setting the corresponding parameter c4 gt 0 Activation to activate sharing of the control status set FA 0 and Fc 0 on the controllers MPXPRO Slave Note e the configuration FA 0 and Fc 0 on a Master controller causes the alarm rE e if the Slave controller is not accessible from the Master alarm MA is displayed The function manages the control status activation and deactivation of the cooling request on the Slave controllers from the Master via the tLAN network This means that only the Master parameters set point differential night time set point variation control offset in the event of probe error affect the control algorithm The value of the Slave parameters has absolutely no influence If the Slave controller is not accessible from the Master the user interface shows alarm MA duty setting mode is activated based on the local setting of parameter c4 and the corresponding management duty setting starts in the status found prior to the instant it is activated i e it starts with compressor on if this was on and with compres
177. um opening expressed as the number of steps the maximum ON OFF time of the PWM valve is considered default 6 seconds The absolute openings expressed as steps must then be suitably converted by the user and referred to the maximum fixed period expressed in seconds Apertura valvola Valve opening Surriscaldamento Superheat Fig 6 0 Type of refrigerant parameter PH This is used to set the type of gas refrigerant used in the system The table below shows the types of gas possible and the associated PH values For compatibility with the E V valve see paragraph 4 3 Contact CAREL if installing E V valves in systems that use refrigerants not listed in the table Par Description Def Min Max UoM PH Type of refrigerant 3 1 22 1 R22 O R717 19 R407A 2 R134a 1 R744 20 R427A 3 R404A 2 R728 21 R245Fa 4 R407C 3 R1270 22 R407F 5 R410A 4 R417A 6 R507A 5 R422D 7 R290 6 R413A 8 R600 7 R422A 9 R600a 8 R423A Tab 6 an Important if the type of refrigerant is not correct there may be A return of liquid to the compressor Electronic valve parameter P1 MPXPRO can control two different models of electronic expansion valve each with the specific type of optional expansion board Parameter P1 is used to set the model installed Par Description Def Min Max UoM P1 Electronic valve 0 0 2 0 not used
178. up will be a network defrost for Slave controllers it will be local Defrost delay on power up parameter d5 Par Description Def Min Max UoM d5 Defrost delay on power up if d4 1 0 0 240 min 0 delay disabled Tab 6 ac Also active when d4 0 If the digital input is set to enable or start a defrost from an external contact parameter d5 represents the delay between when the defrost is enabled or called and when it effectively starts For Mater Slave networks where the defrost needs to be activated from a digital input on the Master use parameter d5 to delay the various defrosts thus avoiding current overloads Note to avoid unwanted defrosts controlled by the controller timer set parameter dl 0 defrosts from keypad RTC compressor running time or digital input only Time base for defrost parameter dC Par Description Def Min Max UoM dC Time base for defrost 0 0 1 0 dl in hours dP1 dP2 and ddP in minutes 1 dl in minutes dP1 dP2 and ddP in seconds Tab 6 ad This defines the unit of measure used to count the times for parameters dl defrost interval dP1 dP2 and ddP defrost duration dC 0 gt dl expressed in hours dP1 dP2 and ddP in minutes dC 1 gt dl expressed in minutes dP1 dP2 and ddP in seconds Note parameter dC 1 can be useful for quickly testing the defrost operation with reduced times It is also useful for controlling the ope
179. ure probes Parameter cE on the other hand corrects the value of the saturated evaporation temperature calculated directly based on the evaporation pressure The serial probes cannot be calibrated while the probes shared with the Master are calibrated by the Master min max Fig 5 b Key TI Temperature read by the probe T2 Value calibrated by T1 A Offset min max Range of measurement Par Description Def Min Max U 0 M c1__ Probe 1 calibration 0 20 20_ CC F c2__ Probe 2 calibration 0 20 20_ CC F c3_ Probe 3 calibration 0 20 20 CC F Tab 5 e MPXPRO 0300055EN rel 1 3 07 03 13 5 2 Digital inputs Introduction MPXPRO manages up to 5 physical digital inputs and one virtual digital input Of these as already mentioned D11 DI2 DI3 DI4 are analogue digital inputs configured as digital inputs by their respective parameters A4 A5 A10 A11 while DI5 is only a digital input and can be configured using parameter A12 See the general connection diagram in paragraph 2 8 The virtual digital input is a function whereby the status of a digital input is propagated via tLAN from Master to Slave This is useful for example for a curtain switch allowing switching from day to night status and vice versa without having to connect additional wiring from the Master to he Slaves The virtual digital input can be configured from the supervisor or the Master based on
180. useful above all for stand alone refrigeration controllers used to prevent the evaporation pressure from remaining excessively low for too ong When the evaporation pressure expressed in degrees saturated alls below the threshold the LOP protection is activated which adds an integration action to normal PID control specifically devised to be more reactive as regards the opening of the valve The PID control remains active as the superheat must continue to be monitored as to avoid flooding the compressors The LOP alarm is delayed from the activation of he protection function both are reset automatically when the pressure value in degrees saturated exceeds the threshold T_SUCT P11 P13 P11 ON LSA OFF ON ALARM OFF Key T_EVAP Evaporation temperature PL1 LOP threshold LOP LOP protection PL3 LOP alarm delay ALARM Alarm t Time MPXPRO 0300055EN rel 1 3 07 03 13 Par Description Def Min Max UoM PL1 LOP minimum saturated evaporation 50 0 50 0 50 0 CF temperature threshold PL2 _ LOP integration time 0 0 0 0 240 0 s PL3 LOP alarm delay 0 0 240 s 0 alarm disabled Tab 6 ba PL1 represents the evaporation pressure expressed in degrees saturated below which the LOP protection is activated The protection is deactivated immediately when the pressure exceeds this threshold PL2 represents the integration constant used during the activation
181. utomatic unchanged unchanged unchanged unchanged V H High temperature alarm A O O automatic unchanged unchanged unchanged unchanged V LO2 Low temperature alarm A O O automatic unchanged unchanged unchanged unchanged V HI2 High temperature alarm A O O automatic unchanged unchanged unchanged unchanged V Immediate alarm from exter duty A palicontact A O O automatic setting A6 unchanged unchanged unchanged V 7 Delayed alarm from external auty dA y A O O automatic setting A6 unchanged unchanged unchanged V contact i if A7 0 dor Door open for too long alarm A O automatic unchanged unchanged unchanged unchanged V Etc Real time clock fault Q OFF OFF automatic unchanged unchanged unchanged unchanged V LSH Low superheat alarm A OFF OFF automatic OFF unchanged unchanged unchanged V V OFF LSA Low suctionternperature A OFF OFF automatic paragraph unchanged unchanged unchanged V V alarm manual 6 10 MOP Aea Gapga pren A OFF OFF automatic OFF unchanged unchanged unchanged V v LOP A N temperature A OFF OFF automatic unchanged unchanged unchanged unchanged vV v manual bLo Valve blocked alarm A OFF OFF disabled with unchanged unchanged unchanged unchanged V P14 0 5 Communication error with i Edc stepper driver A A ON ON automatic unchanged unchanged unchanged unchanged V Stepper motor broken not 7 S connected A A ON ON automatic unchanged
182. uzzer is muted the display shows the code of the first type F parameter available c1 2 see the paragraph Setting the parameters point 1 Fig 3 f Important if no button is pressed after 10 s the display starts flashing and after 1 minute the standard display will automatically be restored Accessing the type C parameters The type C parameters configuration include the choice of variable displayed on the user terminal assignment of the of the outlet intake and defrost functions to the probes configuration of the digital inputs behaviour of the evaporator fans during defrost configuration of the Master Slave network and defrost time bands See the table of parameters Procedure 1 press Prg mute and Set together for more than 5 seconds if there are active alarms the buzzer is muted the display shows the number 0 flashing 2 press UP or DOWN and enter the PASSWORD 22 Confirm by selecting Set 3 the first modifiable type C parameter is displayed 4 4 see the paragraph Setting the parameters point 1 Accessing the type A parameters The type A parameters advanced include the choice of the type of probe NTC PTC PT1000 NTC L243 for each of the four groups of probes assignment of the superheat control ambient temperature and humidity and glass temperature probes compressor protection parameters the parameters that define the defrost algorithm used Sequential stops Running time Pow
183. ve parameters to supervisor 52 0 0 1 A A 0 fast update disabled PM1 MOP maximum saturated evaporation temperature threshold 54 50 0 50 0 50 0 SCF A A A PM2 MOP integration time 54 10 0 0 0 240 0 s A PM3 MOP alarm delay 54 0 0 999 s A A A 0 function disabled PM4 MOP delay activation of function when starting control 54 2 240 A A P MOP enable close solenoid valve 54 0 0 1 A A A 0 closing disabled 1 closing enabled PL LOP minimum saturated evaporation temperature threshold 55 50 0 50 0 50 0 CAF A vA PL2 LOP integration time 55 0 0 0 0 240 0 s A A PL3 LOP alarm delay 55 0 0 240 S A A 0 function disabled SH Superheat 40 56 K F A PPU Valve opening percentage 40 56 E F A A GS Superheated gas temperature 40 56 C F F UN Eu Saturated evaporation temperature 40 56 S C F F A A cE Saturated evaporation temperature calibration 41 0 0 20 0 20 0 CF A A A Po6 PWM expansion valve Ton Toff period 56 6 1 20 s A A cP1 nitial valve position when control starts 52 30 0 100 A A A Pdd nitial valve position maintenance time after defrost 52 10 0 30 min A A PSb Valve standby position 52 0 0 400 step A A A PF Valve opening steps supervisor 56 0 step NV PMP Enable manual expansion valve positioning 56 0 0 A 0 disabled 1 enabled PMu Manual valve position 56 0 600 step A Phe Enable high current valve driving 56 0 0 1 7 A A PSM Smooth Lines Enable function 52 0 0 1 A A PLt S
184. ving identified the required setting e g edit parameters access the alarm log then scroll the list of Slave units available pressing UP or DOWN press Set to select the desired unit uM ul u2 u3 u4 u5 Master Slave 1 Slave 2 Slave 3 Slave 4 Slave 5 Tab 3 aTab 3 c uxo indicates that controller x is OFFLINE to return to the normal display press Prg mute The controller will in any case return to the normal display after a timeout of around 1 minute MPXPRO CAREL MPXPRO CAREL Fig 3 d Note this specific procedure can be managed from the Master controller only if the user terminal is connected to a Slave controller the procedure is limited to that Slave only Changing the set point St To modify the set point default 50 C Procedure press Set until the display shows the current value of St flashing press UP or DOWN to reach the desired value press Set briefly to confirm the new value of St e the standard display will be restored 21 Accessing the type F parameters The type F parameters frequent include the probe calibrations set point and differential end defrost temperature maximum defrost duration alarm thresholds evaporator fans activation threshold and differential and superheat set point See the table of parameters Procedure 1 press Prg mute for more than 5 seconds if there are active alarms the b
185. y this threshold plus the hysteresis P13 P12 represents the alarm activation delay after exceeding the threshold P11 When the alarm is activated the following occur message LSA shown on the display e the buzzer is activated The alarm features automatic reset for the first four activations over a two hour period then becomes manual reset 53 P12 0 gt LSA alarm disabled P13 represents the hysteresis used to deactivate the LSA alarm P13 0 gt reset always automatic P10 allows the network solenoid valve to be closed in the event of low superheat LowSH and or low suction temperature alarm LSA P10 1 default the unit that signals the LowSH and or LSA status as well as closing the local solenoid valve propagates the request across the local network LAN This enables propagation of the closing request over the tLAN network to the Master To effectively close the network solenoid valve if available P10 1 the solenoid on the Master must be enabled as a network valve parameter r7 1 the only type that can accept network requests P10 0 the unit that signals the LowSH and or LSA status does not enable the closing of the network and local solenoid valve LowSH OFF ALARM OFF Key T_SUCT Suction temperature P13 LSA Alarm differential P11 LSA low suction temperature t ti threshold ne P12 LSA alarm delay LSA LSA protection LOP Minimum evaporation pressure Function

+0300055EN MPXPRO User Manual

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