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1. Screen description Description th Hour RW F Current hours 0 to 23 t Hour RW F Current minutes 0 to 59 tn Date R F Current weekday tM Date RW F Current month 0 to 12 tY Date RW F Current year 0to9 td Date RW F Current day 0 to 31 Weekday of 1st defrost 0 no setting 1 MONDAY TUESDAY WEDNESDAY d1 17 defrost time RW C a ard 0 to 10 0 SATURDAY 7 SUNDAY MONDAY TO FRIDAY WEEK END 10 ALL DAYS h1 1 defrost time RW C Hours of 1st defrost hours Oto 23 0 M1 17 defrost time RW C Minutes of 1st defrost min 0 to 59 0 d2 2 defrost time RW C Weekday of 2nd defrost see parameter d1 0 to 10 0 h2 27 defrost time RW C Hours of 2nd defrost hours 0 to 23 0 m2 2 defrost time RW C Minutes of 2nd defrost min 0 to 59 0 d3 8 defrost time RW C Weekday of 3rd defrost see parameter d1 0 to 10 0 h3 8 defrost time RW C Hours of 3rd defros hours 0 to 23 0 m3 B defrost time RW C Minutes of 3rd defrost min 0 to 59 0 d4 4 defrost time RW C Weekday of 4th defrost see parameter d1 0 to 10 0 h4 4 defrost time RW C Hours of 4th defros hours 0 to 23 0 m4 4 defrost time RW C Minutes of 4th defrost min 0 to 59 0 d5 6 defrost time RW C Weekday of 5th defrost see parameter d1 0 to 10 0 h5 5 defrost time RW C Hours of 5th defros hours 0 to 23 0 m5 5 defrost time RW C Minutes
2. 15 15 Unit ON OFF PGD only Press ENTER to switch the unit Change the unit status status Available only if H3 1 Code 03P220221 rel 1 0 dated 28 10 05 37 15 16 Network PGD only Screen description Description Switch the terminal to another unit in the LAN Only the available units are displayed 10 MASTER 11 SLAVE 1 Unit Sj Switch to unit RW C 112 SLAVE 2 Oto5 13 SLAVE 3 current 14 SLAVE 4 15 SLAVE 5 This function is not featured on the PST terminal Number of slaves only on the master Sn Number of slaves RW C 0 LAN not present 0to5 0 Note 1 Value of A1 to A3 A8 Operation 0 Input not active No function associated 1 Immediate external alarm Contact open alarm active 2 Delayed external alarm Contact open alarm active with delay set by parameter A7 Contact open defrost not enabled 3 Enable gefrost Contac lige defrost enabled 4 Immediate activation of the defrost Contact closed start immediate defrost Door switch Contact open door open 5 When the door is opened the controller and the fans stop If the door remains open for a time greater than the value set for parameter d8 the controller and the fans start again and an error is signalled dr 6 Remote ON OFF Contact closed unit ON on Contact open unit OFF unit in standby 7 Curtain switch Contact closed night c
3. on master Loss of communication with slave 1 to 5 e check the LAN electrical connections These network signals both on the master and on the slaves are reset automatically as soon as communication is re established between the master and the slaves 14 2 6 Alarms relating to the digital inputs Check the parameters A1 to A3 A8 and AT IA Immediate alarm from digital input e check the status of the digital input and the value of the corresponding parameter A1 to A3 A8 dA Delayed alarm trom digital input e check the status of the digital input and the value of the corresponding parameters A1 to A3 A8 and AT Id This is an immediate external alarm see the description of alarm IA with the difference that the controller will activate the duty cycle setting function see explanation of parameters c4 and c5 e check the status of the digital input and the value of the corresponding parameter A1 to A3 A8 14 2 7 Other signals Check the parameters r3 dP d0 d8 d6 Ar th e tn tM tY and td Ed The last defrost ended as the maximum time parameter dP exceeded before reaching the end defrost temperature dt The signal is active only if parameter r3 1 The signal remains on until a defrost is completed correctly as programmed and that ends at the set temperature e check parameters
4. 2 DEFROST PROBE 3 AIR ON PROBE third probe Configuration of the function of probe S3 S3 probe 0 NOT PRESENT S3 configuration mode RW C 1 AIR OFF PROBE room probe 0to3 3 2 DEFROST PROBE AIR ON PROBE third probe Select the type of probe S6 0 NT 81 6 probe type Rw c 1 0 5Vde Forfuture applications 0to3 0 Currently not managed 2 PT1000 3 420mA Select the type of probe S7 0 NT icati 82 87 probe type Rw c 1 0 5Vde For future applications 0t03 0 f Currently not managed 2 PT1000 3 420mA Select the type of probe S4 0 NIC B3 S4 probe type RW C 1 0 5Vde Oto 2 0 2 PT1000 Code 03P220221 rel 1 0 dated 28 10 05 31 Ref Screen description Description Select the type of probe S5 0 NIC B4 S5 probe type RW C 1 0 5Vdc Oto 2 0 2 PT1000 Select the type of probe S1 0 NIC B5 S1 probe type RW C 1 05Vde Dto 2 0 2 PT1000 Select the type of probe S2 0 NIC B6 S2 probe type RW C 1 0 5Vde 0to 2 0 2 PT1000 Select the type of probe S3 0 NIC B7 S3 probe type RW C 1 0 5Vde 0to 2 0 2 PT1000 15 2 rEG Control parameters Screen description Description r1 Minimum set point value RW C inimum set point value allowed by the user oC 50 0 to 50 0 2 r2 Maximum set point v
5. Luer ee eee 35 EEV WalVe parameters restane do o o el cides ao dor dadler dalit dedo 36 O aia desd 37 A eee LE Iaia 37 Initialisation PGD ONIV ra rnnne canoso nn rnnnn nano ra rnnnerannnnnrarnnne ra EENE EAEE EErEE EEEn EErEE 37 UNE ON OFE RGD Only ssc e a A ON Sh EET 37 Network PGD OA ae cists neti accel aaa a I A I SII SNS UU Lilla ui 38 1 User interface The MasterCase2 uses the PGDO display and the series of standard PST terminals as the user interface This terminals as well as being the same used by other Carel instruments consequently allowing a reduction in product codes offer various solutions e PGDO terminal with 6 buttons e PST small terminal with 3 digits and 3 buttons e simple remote display with 3 digits Important The use of the PGD terminal excludes the use of any PST terminals If the PST terminal is left connected the display is not updated remaining on the last value displayed Each button is backlit by a LED to signal the status of the unit outputs active alarms etc The terminals are not required for the operation of the MasterCase2 but rather are used to program the controller The terminals can be connected live that is when the instrument is on without creating problems in operation 1 1 Functions of the Buttons and LEDs on the PST small terminal Button Function Description Normal operation e Pressed for more than one second activates or deactivates t
6. e r4 deviation from the set point e Stn select night time set point mode e St set point hSn night time set point start hour e mSn night time set point start minutes e hSd night time set point end hour e msd night time set point end minutes MasterCase2 offers the possibility to manage two different control set points during the day and at night Parameter Stn can be used to configure the controller for the automatic changeover of the set point The following values are possible Stn 0 no night time set point No digital input programmed as the curtain switch Ax 7 no action Digital input programmed as the curtain switch Ax 7 gt when the status of the corresponding digital input changes only the light output will be activated action sent across the local network from the Master to the Slaves No change in the set point Stn 1 set point variation from digital input No digital input programmed as the curtain switch Ax 7 no action Digital input programmed as the curtain switch Ax 7 gt when the status of the corresponding digital input changes the following will occur e activation of the light output action sent across the local network from the Master to the Slaves e variation of the set point according to parameter r4 e switching of the control reference to the third probe S3 according to parameter r6 Stn 2 varia
7. is set to 1 the set point will be varied by the value of the parameter r4 Al to A3 A8 8 duty cycle setting operation The opening of the contact associated with the digital input set with this value will switch the controller to duty setting operation Al to A3 A8 9 door switch with control ON The behaviour of the controller when the digital input set to this value is opened is the same as for the door switch An 5 with the difference that in this case the outputs remain active ON This configuration can be used in cases where the door is opened and closed frequently for short periods frozen food display cabinets etc Code 03P220221 rel 1 0 dated 28 10 05 11 4 Analogue input configuration 4 1 General operating principle The MasterCase2 controller has 7 analogue inputs 3 of which can be configured using parameters S1 S2 S3 Each input can be associated with the type of probe connected and an offset for the reading Parameters used 81 configuration of the type of probe S6 not managed in the 1st version of the software 82 configuration of the type of probe S7 not managed in the 1st version of the software 83 configuration of the type of probe S4 e B4 configuration of the type of probe S5 vi 85 configuration of the type of probe S1 86 configuration of the type of probe S2 e B7 configuration of the type of probe S3 e S1
8. Control status Fan Status of the fans Temp Temperature F1 Fan off time AQ Temperature alarm return and fan activation differential Fig 14 Code 03P220221 rel 1 0 dated 28 10 05 18 9 3 Defrost dripping post dripping Parameters used e F3 fan management during defrost e Fd fan off time during post dripping e dd dripping time During defrost the fans can be configured to operate in different modes based on the value of parameter F3 e F3 0 fans on during defrost During the dripping wait in the case of master slave network defrost and dripping times if set by the parameter dd the fans are always off e F3 1 fans always off in all phases defrost and dripping wait F3 2 fans always on even during the dripping phase dd This is useful in the applications where the fans must always be on yet a pause dripping time is required after defrosting During the dripping wait in the case of master slave network defrost and dripping times if set by the parameter dd the fans are always on FO 0 F3 0 Fd 0 Code 03P220221 rel 1 0 dated 28 10 05 FO 0 F3 1 Fd 0 a E a t Fa MFT aa Fa Fig 16 Key Reg Control status Fan Status of the fans t Time dF Defrost operation dd Dripping wait time Fd Post dripping time 10 Defrost 10 1 General operating principle Parameters used e All the type d parameters e 10 select end defrost p
9. Union directive 2002 96 EC issued on 27 January 2003 and the related national legislation please note that 1 WEEE cannot be disposed of as municipal waste and such waste must be collected and disposed of separately 2 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 3 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 4 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 separately 5 Inthe event of illegal disposal of electrical and electronic waste the penalties are specified by local waste disposal legislation CONTENTS 1 pS 10 11 12 13 14 Userinterface TESE 1 1 Functions of the Buttons and LEDs on the PST small terminal 1 2 Functions of the Buttons and LEDs on the PGDO terminal rn eten kn nsrnsnsensensnsrnsensnsrnsensnnrnsensenrnsensennsennnnsnnn Setting ihe parameters i s here balcanico i AA AN nti 9 2 1 Accessing the parameters from the PGDO display i 9 2 2 Accessirigithe parameters
10. alarm The digital input can be connected to an external alarm that requires immediate activation for example high pressure alarm etc The alarm is generated when the contact is opened and causes the display of the code IA the activation of the buzzer and the total shutdown of the controller and all the related outputs When the alarm condition is no longer present the unit returns to normal temperature control operation Al to A3 A8 2 input associated with a delayed external alarm The operating mode is the same as for value 1 above in this case however the alarm signal can be delayed by a time in minutes equal to the value set for the parameter A7 Al to A3 A8 3 input associated with a defrost enabling signal This setting is used to enable disable the defrost function When the contact is open the defrost is inhibited when the contact is closed the defrost is enabled If the contact is closed but there is no defrost request the defrost is obviously not performed If the contact is closed and a defrost is in progress when the digital input is opened the current defrost is stopped terminating any dripping and post dripping phases and the successive defrosts are inhibited until the next time the digital contact is closed Possible applications this function is useful for example in the case of multiplexed showcases with hot gas defrost In these systems the defrosts are performed in islands and therefore at any on
11. be set after having supplied power to the terminal via the RJ12 telephone connector The default address of the terminal is 32 3 0 i D To enter configuration mode press the DOWN lt lt UP lt gt and ENTER D buttons at the same time for at least 5 seconds the following screen will be displayed with the cursor flashing in the top left corner Display address SELLIN saaana aa AN 1 0 Board address xx N e To change the address of the terminal display address setting press ENTER 2 The cursor will move to the address field nn Li e Use the DOWN 2 and UP BD buttons to select the desired value and confirm by pressing ENTER If the value selected is different from the one saved previously the following screen will be displayed and the new value will be saved to the permanent memory on the display Display address changed If the field nn is set to 0 the terminal will communicate with the controller using the point to point protocol not pLAN and the I O Board address xx field is no longer displayed being without meaning 13 23 Setting the address of the boards in the pLAN The pLAN address is set using a standard PGDO terminal as follows Disconnect the board from the power supply Prepare a PGDO terminal with the address set to 0 Connect the terminal to the controller Disconnect any pLAN connections to other controllers from the MasterCase2 D R DEI e Power the controller by pres
12. being able to act at the same time are not independent If the unit is switched off from the terminal it cannot then be switched back on from the supervisor and vice versa In practice the two functions must be considered as being in series Code 03P220221 rel 1 0 dated 28 10 05 13 7 Temperature control 7 1 General operating principle Parameters used e 4 control probe e St set point rd differential hysteresis e r1 minimum set point e r2 maximum set point Control is performed as follows temperature 4 gt St rd gt control ON temperature 4 lt St gt control OFF Key Reg St td 7 2 Safety parameters and control activation times Parameters used e c0 control start delay when switching the instrument on e c1 minimum time between two consecutive starts e c2 minimum off time e c3 minimum on time e c8 control start delay from when the valve opens 7 2 1 Control start delay when switching the instrument on c0 Control status Time Set point Differential This parameter is used to delay by a set time in minutes the activation of the control functions from when the instrument is switched on Pwr KATTA eer RENE EEE i Key i gt Pwr i t Rat Reg Rat fede iii CUE ae ie t E I I i il Y gt I t H 1 H 1 Loy i Reg dl ve Hd ea g i co Fig 5 Code 03P220221 rel 1 0 dated 28 10 0
13. configuration of the function of probe S1 e S2 configuration of the function of probe S2 e S3 configuration of the function of probe S3 e C calibration of probe B5 e d calibration of probe B6 e 8 calibration of probe B7 e PUO calibration of the superheated gas temperature probe suction probe e PAO calibration of the saturated evaporation temperature probe e 4 defines a virtual probe between the room probe and the third probe ei 4 2 Types of probes The MasterCase2 controller correctly manages different types of probes using parameters B1 to B7 e NIC e 0 5V e PT1000 e 420mA All the probes connected cannot be configured in all modes see the list of parameters for more detailed information 4 3 Calibration and offset Each input can be assigned a value that is added to positive value or subtracted from negative value the temperature measured by the probe For example to decrease the temperature by 2 3 degrees set 2 3 The offset can be set from 9 9 to 9 9 with precision to the tenth of a degree For the probes relating to the management of the electronic valve the offset may vary from 9 9 to 19 9 with precision to the tenth of a degree parameters PUO and PAO 4 4 Control probes The configuration of the control probes can be customised using parameters S1 S2 and S3 assigning a different association between
14. position 0 to 100 80 P2 SuperHeat Dead zone RW C Dead band SG 0 to 9 9 0 P3 SuperHeat Set RW C Superheat set point C Oto 50 0 12 0 P4 PID Proportional factor RW C PID proportional gain 0to 99 9 10 0 P5 PID Integral factor RW C PID integral time S 0 to 250 100 P6 PID Derivative factor RW C PID derivative time s 0to999 0 0 P7 Low SuperHeat threshold RW C Low superheat threshold C 10 0toP3 5 0 P8 Low SuperHeat Integral time RW C Low superheat integral time S 0t0 25 0 15 0 P9 Alarms delay Low SuperHeat RW C Low superheat alarm delay time s 0 to 9999 0 PM1 MOP protection Threshold RW C MOP threshold saturated evaporation temperature G 50 0 to 60 0 70 0 PM2 MOP protection Integral time RW C Integral time during the MOP valve closing S 0to25 0 10 0 PM3 MOP protection Start up delay RW C OP function activation delay s 0 to 250 120 PM4 Suction temp high limit RW C aximum superheated gas temperature SG 0 to 999 9 80 0 PSt Evaporation satured temperature RW C Evaporation temperature read by 0 to 1 1 rom 0 PRESSURE if the evaporation pressure probe is used 1 TEMPERATURE if the evaporation temperature probe is used PEL Evaporation pressure probe RW C inimum value of the evaporator probe bar 1 0 to 1 0 Min value Available only if PSt 0 40 0 PEH Evaporation pressure probe RW C aximum value of the evaporator probe bar 1 0 to 9 3 Max value Available only if PSt 0 90 0 PUO Suct
15. r3 dO dt and dP e check the efficiency of the defrost devices e check the positioning of the end defrost probe dr The digital input configured as the door switch A1 to A3 A8 5 has remained open for a time greater than the time set for parameter d8 e check that the door is actually closed e check the status of the contact connected to the input on the instrument dF Defrost running e this is not an alarm signal but rather an indication that the controller is running a defrost e itis only displayed if parameter d6 0 or d6 2 n1 to n5 on master Local alarm on slave 1 to 5 e check the status of the slave with the alarm and check the alarm code on the slave tC Clock error RTC on the unit fitted with the RTC e setthe time and the minutes on the user interface or via supervisor e ifthe error persists check and or replace the clock card Code 03P220221 rel 1 0 dated 28 10 05 30 15 List of parameters 15 1 Prb Probe parameters Ref Screen description E Description UOM Range Defines a virtual probe between the room probe and the third probe 4 irtual probe awl C 0 The value of the virtual probe is the same as the room probe 0to100 0 configuration 1 to 99 The value of the virtual probe is between the room probe and the third probe 100 The value of the virtual probe is the sa
16. top left and the setting or selection fields I ENTER e Pressed in the main screen displays the value read by the main probes press ESC to display the main d screen Parameter programming e Saves the value of the set parameter to memory after the cursor has been moved out of the field Normal operation e Scrolls the next screens in the same branch when the cursor is in the top left N e Decreases the value of a setting field when the cursor is in the field for a selection field on the other ab DOWN hand pressing the arrow button displays the next option br e Pressed together with UP for 5 seconds activates or deactivates the continuous cycle function Parameter programming e Decreases the value of the parameter displayed Code 03P220221 rel 1 0 dated 28 10 05 8 2 Setting the parameters The parameters have been grouped into two families e frequent parameters indicated by type F in the parameter tables e configuration parameters indicated by type C with access protected by a password to prevent unwanted tampering The parameters can be programmed as follows e from the keypad e via LAN download parameters from master to the connected slaves e via an RS485 serial connection if the optional card is fitted To set the parameters from the keypad the procedure varies depending on whether the PGDO or PST display is used 2 1 Accessing the parameters from the PGDO display 2 1 1 Acce
17. trom the PSTt display cscona de Na ER ly agit 10 Digital input configuration c ERA OA RARO AIAR a 3 1 General operating principle Analogue input configuration A siie alii A A A 4 1 General operating principle ii E AE I E E S 4 3 IE I aati al Sia ial aaa arcana 44 Control probes 45 Virtual probe Digital ouitput CONMOUPALION A iia 13 5 1 General operating Principle ccoo ria io 13 OSE cena 13 6 1 H parameteis isdn ARIE ea 13 Temperature control 14 71 General operating principle 14 1 2 Safety parameters and control activation tiMes iii 14 7 3 Gontinuous cyclesfunctioni rec OGG ee 16 74 Duty cycle setting function safety control 16 25 Temper ture monitonng uses a AT N N E A Ar E S 16 Night time operationi i tess ee ease soe arcieri Nae EEA annemede dated anniv EE EEN AA EE AN AE NENEA EA 17 8 1 General operating principle 2 eee el 17 FANS etset 18 9 1 General operating principle 18 9 2 Normal operation 18 9 3 Defrost dripping POSt CriP UNG cerco aliada 19 Defrost citer ld aa 20 10 1 General operatingiprneplees ct ea ell r e e UU e o a lL eel SII i Ly 20 10 2 Structure of the defrost TUNGtON 22 cs 20 10 3 Actual defrost n 10 4 Dripping and post dripping TIMES ae 10 5 A eder eee rn E cicci ciclone na lat te 10 6 Defrost on start up 10 7 Network de
18. value read by the third probe S3 e Pressed together with DOWN displays the value read by the defrost probe S2 Parameter programming e Displays the value of the selected parameter or exits programming mode e Pressed together with UP returns to the menu list LED e Steady alarm active Code 03P220221 rel 1 0 dated 28 10 05 7 1 2 Functions of the Buttons and LEDs on the PGDO terminal Fig 2 1 2 1 Terminal buttons Button Function Description i N e Displays any alarms present and deactivates the alarm relay if active ov ALARM e The LED flashing indicates a previous alarm that has been reset Pressing the button momentarily displays the alarm and switches off the LED Prg f jii e Accesses the programming menu screens Normal operation Returns to the main screen Esc ESC eturns to the scree Parameter programming e Returns to the programming menu Normal operation e Scrolls the previous screens in the same branch when the cursor is in the top left e Increases the value of a setting field when the cursor is in the field for a selection field on the other ap UP hand pressing the arrow button displays the previous option 7 e Pressed together with DOWN for 5 seconds activates or deactivates the continuous cycle function Parameter programming e Increases the value of the parameter displayed Normal operation Moves the cursor between the home position
19. 5 14 Enable control Sys ON Control request Control status Time Control start delay when switching the instrument on 722 Minimum time between two consecutive starts c1 Sets the minimum time that must elapse between two activations of the controller irrespective of the temperature and the set point This parameter can be set so as to limit the number of starts per hour For example if the maximum number of starts per hour allowed is 10 simply set c1 6 to ensure that this limit is observed A Rat pe AAT NT ni ee a er 1 I I E I A I v Y Key t Rat Control request A l l Reg Control status Reg i l t Time i cl Minimum time between two consecutive starts I I i Do t I I gt a Fig 6 7 2 3 Minimum off time c2 Sets the minimum controller off time in minutes compressor output The compressor output is not reactivated until the minimum time selected c2 has elapsed since the last deactivation This parameter is useful for ensuring the balancing of the pressure after shutdown in the case for example of systems with hermetic and capillary compressors Key Rat Control request Reg Control status t Time c2 Minimum off time 7 2 4 Minimum on time c3 Sets the minimum control on time The compressor output is not deactivated unless it has been activated for at least the time set Rat Key Rat Control request Reg Control status t Time c3 Minimum on time Reg Fig 8 Co
20. A R r6 14 D RW ul 67 D R S2 40 RW 87 88 RW PL 27 A R FO 15 D RW U2 68 D R S3 41 RW P9 90 RW Po3 28 A R F2 16 D RW U3 69 D R d1 42 RW h 100 R Po2 29 A R Fd 17 D RW U4 70 D R d2 43 RW t 101 R Air offprb 30 A R d4 18 D RW U5 N D R d3 44 RW n 102 R Defrost pro 31 A R Ar 19 D RW LOP 72 D R d4 45 RW m 103 R Aironprb 32 A R d7 20 D RW LSh 73 D R d5 46 RW y 104 R Virtual Pro 33 A R d9 21 D RW HSh 74 D R d6 47 RW d 105 R 10 prb 34 A R 9 23 D RW Integer Variables d7 48 RW PF 116 R tt 40 A R H3 25 D RW Ad 1 RW d8 49 RW Power Rat 117 R rH 60 A R Comp 26 D R A1 2 RW h1 50 RW d6 118 RW rL 61 A R Light 27 D R A2 3 RW h2 51 RW rt 119 R PPE 62 A RW Def 28 D R A3 4 RW h3 52 RW mSn 120 RW PEL 63 A RW Fan 29 D R A4 5 RW h4 53 RW mSd 121 RW PEH 64 A RW Def2 30 D R A7 6 RW h5 54 RW PI 122 RW PUO 65 A RW Alarm 31 D R A8 7 RW h6 55 RW CP1 123 R PAO 66 A RW Thea 32 D R Ho 8 RW h7 56 RW PM3 124 R PL1 67 A RW NetComp 33 D R 10 9 RW h8 57 RW Analogue Variables PL2 68 A RW On Off 34 D R Sn 12 RW m1 58 RW AH 1 A RW HI 40 D R Stn 13 RW m2 59 RW AL 2 A RW LO 41 D R hSn 14 RW m3 60 RW AO 3 A RW Ed 43 D R hSd 15 RW m4 61 RW S 4 A RW Ed1 44 D R F3 16 RW m5 62 RW rd 5 A RW d 45 D R d2 17 RW m6 63 RW r 6 A RW dA 46 D R c0 18 RW m7 64 RW r2 7 A RW A 47 D R c1 19 RW m8 65 RW r4 8 A RW HA 48 D R c2 20 RW PH 66 RW SLI 9 A RW HF 49 D R c3 21
21. FF time RW C Minimum off time min 0 to 15 0 c3 inimum comp ON time RW C Minimum on time min 0 to 15 0 c4 Relay safety Time ON on error RW C Safety control Duty cycle setting function ON time min 0 to 100 0 cb Relay safety Time OFF on error RW C Safety control Duty cycle setting function OFF time min 0 to 100 0 Displayed if C440 c6 Low temperature alarm exclusion RW C Low temperature alarm bypass time after continuous cycle hours Oto 15 2 after cc c8 Delay start regulation after RW C Control start delay from when the valve opens S 0 to 120 5 alve open cc Continuous cycle duration RW C Continuous cycle duration hours Oto 15 4 Code 03P220221 rel 1 0 dated 28 10 05 32 15 4 dEF Defrost management parameters Screen description Description 8 I d0 Defrost type RW C Type of defrost 0 to3 0 0 ELECTRIC END BY TEMPERATURE OTHERWISE BY TIME 1 HOTGAS END BY TEMPERATURE OTHERWISE BY TIME 2 ELECTRIC END BY TIME 3 HOTGAS END BY TIME d2 LAN defrost command type RW C Type of control for LAN defrost Oto 1 1 0 START ONLY 1 START AND STOP d4 Defrost at startup RW C Defrost when switching controller on Oto 1 0 0 DISABLED 1 ENABLED d5 Defrost delay from dig
22. RW tr 70 RW F1 10 A RW E 50 D R c4 22 RW tA 71 R d 11 A RW E 51 D R c5 23 RW tSH 72 R 8 12 A RW E 52 D R c6 24 RW tSM 73 R Code 03P220221 rel 1 0 dated 28 10 05 27 14 Alarms 14 1 Summary table Ref Screen description Meaning Relay alarm and buzzer rE Control probe broken or not Control probe probes broken or not connected Active connected El Air Off probe broken or not S1 Room probe broken or not connected Relay only connected E2 Defrost probe broken or not S2 Defrost probe broken or not connected Relay only connected E3 Air on probe broken or not S3 Third probe broken or disconnected Relay only connected E0 Communication error with the PST terminal Not active only on PST display IA Immediate external alarm Immediate external alarm Active dA Delayed external alarm Delayed external alarm Active LO Low temperature alarm Low temperature alarm Active HI High temperature alarm High temperature alarm Active HA HACCP alarm HA alarm HACCP Relay only HF HACCP alarm HF alarm HACCP Relay only Ed Defrost ended by timeout Defrost ended by timeout Relay only Ed1 Driver probes out of range Driver control probes broken or not connected Active LSh Low SuperHeat alarm Low superheat Active dF dF Defrost in progress only on PST display Not active tC RTC invalid RIC error Active only on units with RTC MA Lost communicat
23. _ gt t dF dd Ed Fig 18 Code 03P220221 rel 1 0 dated 28 10 05 20 10 3 Actual defrost Parameters used e d0 type of defrost e 10 select end defrost probe 9 end defrost also with third probe S3 e dP maximum defrost duration e dt maximum defrost temperature The actual defrost phase is the main phase of the defrost procedure only during this phase is the heater output or hot gas injection solenoid valve activated The duration of this phase depends on the configuration of parameter dO which indicates whether the end of the actual defrost procedure depends only on the maximum defrost time dP or also on the temperature indicated as the end defrost temperature dt according to the value read by the probe indicated by parameter 10 and the configuration of parameter 9 d0 0 2 d0 1 3 Key Reg Control status Def Status of the defrost output Tye End defrost probe temperature dP Maximum defrost duration dt Maximum defrost temperature 10 4 Dripping and post dripping times Parameters used e F3 fan management during defrost e dd dripping time e Fd fan off time during post dripping This phase allows the water created due to the heat from the electric heaters to drip choosing whether the fans should be on at the same time The dripping phase lasts the time indicated by parameter dd during the dripping phase the fans o
24. alue RW C Maximum set point value allowed by the user oC rMto90 0 90 0 r3 Alarm for defrost end timeout RW C Enable Ed alarm defrost ended by timeout Dto 1 0 0 DISABLED 1 ENABLED r4 Automatic variat to night time RWJ C ight time set point deviation from the set point C 20 0 to 3 0 setpoint 20 0 r5 in and max temp monitoring RW C Enable maximum and minimum temperature recording Oto 1 0 enabling 0 DISABLED 1 ENABLED r6 ight time regulation with air on RWI C ight time control with third probe S3 Oto1 0 probe 0 DISABLED night time control on virtual probe 1 ENABLED night time control on third probe S3 rd Regulation differential RW F Value of the differential hysteresis used for temperature control oC 0 1 to 2 0 20 0 rH ax temperature stored R C Maximum temperature recorded in the interval rt C rL in temperature stored R C Minimum temperature recorded in the interval rt C rt Temperature storing interval R C Time elapsed since starting to monitor the maximum and minimum temperature hours Oto 999 0 15 3 cMP Safety time and control activation parameters Screen description Description c0 Regulation starting delay RW C Control start delay from power up min 0 to 15 0 cl inimum time beetween two start RW C Minimum time between two consecutive starts min 0 to 15 0 lof the same comp c2 inimum comp O
25. an parameter AH e check the correct operation of the temperature probes The alarm is reset automatically when the temperature returns within the set limits see parameters AH and A0 Code 03P220221 rel 1 0 dated 28 10 05 29 14 2 4 HACCP alarms Check the parameters St Ad AH all the type t parameters See the HACCP section in the manual HA HACCP alarm type HA A high temperature alarm has occurred according to the settings of parameters tr Ad AH St e check the HACCP parameters e check the temperature and the correct operation of the temperature probes HF HACCP alarm type HF A high temperature alarm has occurred according to the settings of parameters tr AH St A power failure has occurred for more than one minute and when power returned the temperature was higher than the value set for AH St e check the HACCP parameters e check the temperature and the correct operation of the temperature probes 14 25 Alarms relating to communication between the units Check the parameters Sn setting the unit address in the LAN See the Network functions section in the manual MA on slave Loss of communication with the master on the slave e check the LAN electrical connections These network signals both on the master and on the slaves are reset automatically as soon as communication is re established between the master and the slaves ul to u5
26. cating the results of the download For each slave unit present in the network the message No is displayed if there has been a communication error download failed while if the download is successful the message Ok is displayed Download Result SITL Ok S13 0k S15 S12 No S14 13 5 Network defrost in multiplexed systems One of the functions that mostly requires synchronisation is defrost management The master controls the defrosts on all the slaves connected The master waits for all the units to have ended the defrost before signalling the end of the defrost on the entire network The slaves that have ended the defrost wait for the end defrost signal from the master before starting the dripping phase Once having received the end defrost signal the controllers switch to the dripping phase The defrost on each single unit and the network defrost in any case end after the maximum defrost time set by parameter dP default 30 min The network defrost as well as being run cyclically at a programmable interval using parameter dl can be started e From the PGDO terminal by pressing ENTER and DOWN together for more than 5 seconds a e From the PST terminal by pressing the SET 4 and sh buttons together for more than 5 seconds N B Pressing the DOWN button on PGDO or the e button on the PST for more than 5 seconds starts the local defrost on the unit e At pre set times if the RTC option is fitted on th
27. d in normal operation yet may be allowable in these transition phases consequently the unnecessary high temperature alarm HI signal can be disabled for the time indicated by parameter d8 If the alarm condition continues more than the time indicated by d8 the alarm will be activated 10 11 Priority of defrost over safety times and the activation of the controller Parameter d9 can be used to assign the priority between the defrost call and the controller safety parameters e d9 0 the protection times are observed e d9 1 the defrost has higher priority and the times set with the C parameters are ignored 10 12 Management of the user interface during defrost Configuration only available for the PST terminal Parameter d6 can be used to set what is displayed during the defrost phase e d6 0 the temperature is displayed alternating with the defrost in progress signal dF e d6 1 the last temperature measured before the start of the defrost procedure is displayed e d 2 gt the defrost in progress signal dF only is displayed Naturally if any alarms are active the display selected will alternate with the alarm signal Code 03P220221 rel 1 0 dated 28 10 05 22 11 Electronic valve 11 1 General operation MasterCase2 can manage the operation of an electronic expansion valve with stepper motor Carel E2V or a PWM On Off valve This allows the pos
28. d to also wait for the end defrost signal from the network This setting depends on parameter d2 e d2 0 gt the instrument completes the defrost without waiting for the end signal stand alone instrument e d2 1 gt the instrument waits at the end of the defrost for the end signal which is usually sent by the master in a LAN of multiplexed cabinets the end signal arrives when all the units in the network have completed the actual defrost phase Code 03P220221 rel 1 0 dated 28 10 05 21 10 8 Management of the second evaporator The MasterCase2 controller can manage a second defrost output that is independent from the main one and associated with the value read by the third probe S3 Consequently this can be used to control a defrost heater on the second evaporator with the management of the second evaporator bypassing the end defrost configuration with two probes parameter 9 To enable the function configure one of the outputs parameters 01 to o8 as the second evaporator output solenoide valve Two independent defrost outputs Fig 21 10 9 Skip defrost This parameter parameter d7 enables the algorithm by which based on the actual time elapsed during the last defrost the following defrost is performed or skipped The following rules are considered e the maximum number of consecutive defrosts that can be skipped is 3 that is after the third defrost skipped the following one is always p
29. de 03P220221 rel 1 0 dated 28 10 05 15 7 3 Continuous cycle function Parameters used e cc continuous cycle duration e c6 low temperature alarm bypass time after continuous cycle AL low temperature alarm deviation from the set point e St set point Key Rat Control request Reg Control status t Time CC rat Instant of continuous cycle procedure activation request cc Continuous cycle duration cc i CC rqt Fig 9 The continuous cycle function forces operation for the time cc for the purpose of lowering the temperature even below the set point This function is started manually by pressing the UP and DOWN buttons on the user interface for more than five seconds both on the PST terminal and on the PGD terminal clearly the function cannot be activated using the PST display only as there are no buttons If cc 0 the continuous cycle is disabled the controller exits the continuous cycle procedure when the time set for the parameter cc has elapsed or alternatively when reaching the minimum temperature threshold set using the parameter AL Tymr St AL At the end of continuous cycle operation the low temperature alarm LO is disabled for the duration in hours indicated by parameter c6 7 4 Duty cycle setting function safety control Parameters used e c4 Safety control ON time cb Safety control OFF time Key Reg C
30. e Master unit 13 6 Remote alarm signals The unit configured as the master in a LAN can signal remote alarms present on the slave units if enabled by setting the corresponding configuration parameter parameter Ar 1 All the masters are enabled to receive the alarm signals from the slaves by default As the terminal or display is not essential for the operation of the unit and indeed in a LAN the slave can operate perfectly without this user interface this function is particularly useful for centralising the alarm management functions on the master If the master detects an alarm on a slave unit probe error high or low temperature error etc the display shows the corresponding alarm signal The following codes denote an alarm on the slave units Alarm on slave unit 1 n1 Alarm on slave unit 2 n2 Alarm on slave unit 3 n3 Alarm on slave unit 4 n4 5 Alarm on slave unit 5 n5 The alarm relay on the master is activated when the remote alarm signal remote is received hol dre Code 03P220221 rel 1 0 dated 28 10 05 26 13 7 Supervisory network The MasterCase2 controllers can be connected to a supervisor allowing remote control of the entire installation Parameters used e HO supervisor serial address To configure the supervisory network simply set parameter HO accordingly The unit can be interfaced to a local or remote supervisory telemaintenance system he MasterCase2 board include an optional RS485
31. e time some islands are enabled to defrost and others are disabled Another use of the function is to prevent defrosts on the units accessible to the public during opening times Al to A3 A8 4 input associated with an immediate defrost from external contact When the corresponding digital input is closed a defrost is started according to the criteria set for the type d parameters Possible applications this function is useful when defrosts need to be performed on a series of utilities coordinated by an external timer To avoid simultaneous defrosts the parameter d5 can be used to delay the start of the defrost on each unit Another use of the function is to prevent defrosts on the units accessible to the public during opening times DefRqt Key DefRqt Defrost call i Def1 Defrost on unit 1 cep gt Def2 Defrost on unit 2 Def2 _ Def3 Defrost on unit n 3 i gt d5 Defrost start delay from controller power on or on from digital input Dee ds dp dP Maximum defrost time l A ALA gt d5 dP Fig 3 Al to A3 A8 5 door switch This function is used to manage the door switch on a cold room When the contact door is opened the control functions and the fans are stopped and the light output is activated When the contact closes the unit starts again in the previous operating mode delaying any temperature alarms for a number of hours equal to the value of the parameter d8 If the doo
32. erformed e after switching the instrument on the first 7 defrosts are always performed e the number of events to be skipped is increased by a maximum of 1 at a time e the manual defrosts started on the user interface or by digital input are always performed and counted e the function can only be used with the defrosts that end by temperature This function is based on a very simple but very effective principle If the defrost lasts less than or equal to 70 of the time set for the parameter dP maximum defrost time the next defrost envisaged will be skipped When the following defrost is performed the check is repeated and if the outcome is the same then the following two defrosts envisaged are skipped and so on according to the criteria described above maximum 3 successive defrosts skipped As soon as the defrost time exceeds 70 of the time dP the following defrost will be performed and the function will start again DefRqt lt 709 3 lt 70 a 7 Key 70 lt 70 n ee DefRat Defrost call Bi JmpSbr JmpSbr Defrosts skipped DefRqt me lt 70 gt 70 lt 70 Fig 22 This function should be used with the programming of the defrosts equally distributed over the day e g cyclical defrosts parameter dl 10 10 HI alarm bypass after defrost During the defrost phase and in the period immediately following the defrost the control probe reading may reach temperature values that are not allowe
33. etwork operation pLAN The MasterCase2 controllers can be connected together to form a pLAN pCO Local Area Network in master slave configuration The main purpose of the pLAN is to provide communication and synchronisation in operation between a series of instruments maximum six one Master and five Slaves operating on a multi evaporator utility for example a multiplexed cabinet The configuration of the instruments can be modified by simply setting the network address This configuration is used to synchronise and coordinate the defrosts send the status of the digital inputs and display any alarms active relating to the Slaves on the Master 13 2 pLAN network configuration 13 2 1 Parameters used e Sn Number of slave units only on the master e Sj Select the unit in the pLAN connected to the display only on the PGD terminal On the Master unit the number of units connected in the LAN can be configured using parameter Sn The Master function will be automatically taken by the controller configured with address 1 in the pLAN network All the other units act as slaves Parameter Sj can be used to change the unit in the network displayed on the terminal the function for selecting the unit in the network displayed on the terminal is only available with the PGD terminal Switch to 5J junit SLAVE1 Current Unit MASTER 13 2 2 Setting the address of the PGDO terminal The address of the terminal can only
34. figured with the same function thus acting as repeats Parameters used e o1 configuration of digital output 1 e 02 configuration of digital output 2 e 03 configuration of digital output 3 e o4 configuration of digital output 4 e ob configuration of digital output 5 e 06 configuration of digital output 6 e 07 configuration of digital output 7 e 08 configuration of digital output 8 The following describes the operation corresponding to each value of 01 to 08 REGULATION control FAN fans DEFROST EVAP 1 defrost evaporator 1 DEFROST EVAP 2 defrost evaporator 2 LIGHT NIGHT BLIND light curtain outputs TRIM HEATER heaters ALARM alarm signals ON OFF SOLENOID solenoid NET COMPRESSOR network compressor NONE output not used 6 Other settings 6 1 H parameters Parameters used e HO supervisor serial address e H3 enable ON OFF function from terminal e HA enable ON OFF function from supervisor e Sn number of slave units in the LAN As regards the parameters HO and Sn see further on in the manual under the chapter Network functions Parameter H3 if set to 1 enables a screen on the PGD terminal used to switch the unit on off Parameter H4 if set to 1 enables the unit to be switched on and off from the supervisor Important the two functions despite
35. frost 10 8 Management of the second evaporator he 10 9 SKIP NETI 10T CPE eee ere 10 10 Hl alarm bypass after ia 10 11 Priority of defrost over safety times and the activation of the controller us 10 12 Management of the user interface during defrost coccion Electronic val Verses o 23 11 1 E e o o ena eens ANG A Gi 23 11 2 Configuration of the system parameters ici ee 23 HACCP na 12 1 General operation En 12 2 HAM iria rado i E aan aida parda 12 3 mes NU tia wets eee GA ai 25 13 1 ido 25 13 2 pLAN network configuration Pe 13 3 DE se 26 13 4 Fale e e o al at ti do lille cul cli o 26 13 5 Network defrost in multiplexed systems 26 13 6 Remote alarm signals 26 13 7 UP e in 21 A o 14 1 Summary table 14 2 Notes ANO IESO E a ra Al 29 15 15 1 15 2 15 3 15 4 15 5 15 6 15 7 15 8 15 9 15 10 19 11 15 12 15 13 15 14 15 15 15 16 List of parameters Prb Probe parameters EG Control parameters ane a e TATE CMP Safety time and control activation parameters i 32 dEF Defrost management parameters cirio steden ee 33 ALr Al rm parameters naisara eas ala ae ete ete 33 FAn Evaporator fan management paraMetelS cocine 34 CNF Configuration parameters sxo ini orli siii lol A li i tt 34 SEN Set point parameters lore casein do 34 HOB HACCP A kansler eanet 35 nte RTC parameters RealTime Glock
36. g the programming procedure e Press the Di button until returning to the main screen Code 03P220221 rel 1 0 dated 28 10 05 9 2 2 Accessing the parameters from the PST display 2 2 1 Accessing the type F parameters amp e press the button for more than 5 seconds e the display shows parameter PP Password Parameters A e press the 4 button e confirm by pressing 4 without entering the password e the display shows the selection menu a RA e de set e select the desired menu item by pressing and and then 2 e pressthe button to enter the item e press the or button until displaying the parameter to be modified 2 2 2 Accessing the type C parameters amp e press the button for more than 5 seconds e the display shows parameter PP Password Parameters e press the gt button a or Ei button until displaying 22 password to access the type C parameters 2 e confirm by pressing e the display shows the selection menu e pressthe a Rh e select the desired menu item by pressing and Ei and then 2 e press the button to enter the item RE sui T e pressthe or button until displaying the parameter to be modified 2 2 3 Modifying the parameters After having displayed the first parameter either type C or type F proceed as follows e press or Ei until reaching the parameter to be modified 2 e press to display the corresponding value e mod
37. he light relay e Pressed together with SET displays the value of the third probe S3 A e Pressed together with DOWN for 5 seconds activates or deactivates the continuous cycle function UP Parameter programming e Moves from one parameter to the previous e Increases the value of the selected parameter e Pressed together with SET returns to the menu list LED e Steady controller on Normal operation Pressed for 5 seconds starts a local manual defrost if the conditions allow e Pressed for 5 seconds together with SET starts a network manual defrost if the conditions allow e Pressed together with UP for 5 seconds activates or deactivates the continuous cycle function va DOWN e Pressed together with SET displays the value read by the defrost probe S2 Parameter programming e Moves from one parameter to the next e Decreased the value of the selected parameter LED e Steady defrost active Normal operation Silences the audible alarm buzzer and deactivates the alarm relay if active e Pressed for 5 seconds together with DOWN starts a network manual defrost if the conditions allow e Pressed for 5 seconds displays the control set point e Pressed for more than 6 seconds When no alarms are active accesses the type F parameters entering the password PP 22 accesses all the parameters divided into groups that can be selected and modified SET e Pressed together with UP displays the
38. ify the value using and or a Q e press to confirm and save the value and return to the display of the parameter code e repeat all the operations under modifying the parameters to change the values of any other parameters 2 2 4 Exiting the programming procedure ES a tighter to return to the menu list A e Alternatively press for more than 5 seconds to return to the temperature display Press Code 03P220221 rel 1 0 dated 28 10 05 10 3 3 1 Digital input configuration General operating principle The MasterCase2 series instruments feature three digital inputs that can be configured using parameters A1 A2 A3 hereinafter A1 to A3 respectively associated with inputs DI1 to D13 In addition a further parameter A8 is used to manage a digital input called the virtual input as it is not physically present on the instrument but rather associated with the status of digital input DI1 on the Master in a pLAN master slave configuration Parameters used A1 configuration of digital input 1 A2 configuration of digital input 2 A3 configuration of digital input 3 A8 virtual input configuration The following describes the operation for each value of A1 to A3 A8 Al to A3 A8 0 digital input disabled The corresponding digital input is not used and ignores the closing opening of any contacts connected to it Al to A3 A8 1 input associated with an immediate external
39. il the refrigerant temperature returns below the set value Type and range of the saturation temperature probe Parameter PSt selects the mode used to read the suction temperature when PSt 0 the saturation temperature is read by the pressure probe the operating limits can be set by the parameters PEL and PEH and then converted to a temperature When PSt 1 the temperature is read directly by the connected probe Parameters PUO and PAO can be used to define an offset on the temperature read by the two probes Code 03P220221 rel 1 0 dated 28 10 05 23 12 HACCP 12 1 General operation This function allows advanced control of the operating temperature and the recording of any faults due to power failures or increases in the operating temperature for various reasons faults severe operating conditions user errors etc This function can only be activated on the controllers with the RTC option fitted Parameters used e Ad tr temperature alarm delay and HACCP alarm delay e AH high temperature alarm deviation from the set point e tA type of HACCP alarm e tSH tSM tSd tSm HACCP alarm start hour minutes and date e tEH tEM tEd tem HACCP alarm end hour minutes and date e to delete the saved data Alarms generated e HF e HA 12 2 HA alarm Key T Temperature control probe t Time St Set point AH High temperature alarm de
40. ion temp Offset RW C Temperature offset of the suction probe SG 9 9 to 0 19 9 PAO Satured temp Offset RW C Temperature offset of the saturation probe C 9 9 to 0 19 9 Code 03P220221 rel 1 0 dated 28 10 05 36 15 12 Outputs PGD only 01 8 Digital Output 1 8 configuration RW C Configuration of digital outputs 1 to 8 0to 9 0 REGULATION control 1 FAN 2 DEFROST EVAP 1 3 DEFROST EVAP 2 4 LIGHT NIGHT BLIND light curtain output 5 TRIM HEATER 6 ALARM 7 ON OFF SOLENOID 8 NET COMPRESSOR 9 NONE The same parameters are available as parameters 01 to 08 on the PST display in the CnF menu configuration 15 13 Service PGD only MP oe procedure aw C nable Regulation Fan Defrost evap 1 Defrost evap 2 Light night blind RW C Manually enable and disable the outputs Oto 1 0 Trim heater Alarm On off solenoid Net compressor Enable the manual procedure Oto 1 0 15 14 Initialisation PGD only _ Press ENTER to install default RW C Press ENTER to activate the default value installation procedure _ parameter Use with caution Carel SpA Cod FLSTDmMC20 R C Version code and release date of the application er X X XX XX XX Boot xx xx XX XX XX R C MasterCase2 boot firmware version BiOS XX XX XX XX XX R C MasterCase2 bios firmware version
41. ion with master Lost communication with the master Active only on the slaves ul Lost communication with slave 1 Lost communication with slave unit 1 Active only on the master unit u2 Lost communication with slave 2 Lost communication with slave unit 2 Active only on the master unit u3 Lost communication with slave 3 Lost communication with slave unit 3 Active only on the master unit u4 Lost communication with slave 4 Lost communication with slave unit 4 Active only on the master unit u5 Lost communication with slave 5 Lost communication with slave unit 5 Active only on the master unit n1 Alarm on slave 1 Alarm on slave unit 1 Active only on the master unit n2 Alarm on slave 2 Alarm on slave unit 2 Active only on the master unit n3 Alarm on slave 3 Alarm on slave unit 3 Active only on the master unit n4 Alarm on slave 4 Alarm on slave unit 4 Active only on the master unit n5 Alarm on slave 5 Alarm on slave unit 5 Active only on the master unit ld Duty cycle setting from digital Duty cycle setting alarm from digital input Active input dr Timeout door open Door open alarm Relay only Code 03P220221 rel 1 0 dated 28 10 05 28 14 2 Notes and descriptions MasterCase2 offers the possibility to signal any faults both using the alarm LED on the terminal and the buzzer PST terminal only as well as in the case of serious alarms by activating a relay with changeover contacts for the remote alarm signal each alarm signal is se
42. ise LEGGI E CONSERVA QUESTE ISTRUZIONI READ AND SAVE THESE INSTRUCTIONS CAREL Technology amp Evolution LEGGI E CONSERVA gt QUESTE ISTRUZIONI lt READ AND SAVE THESE INSTRUCTIONS We wish to save you time and money We can assure you that the thorough reading of this manual will guarantee correct installation and safe use of the product described IMPORTANT WARNINGS BEFORE INSTALLING OR HANDLING THE DEVICE PLEASE CAREFULLY READ AND FOLLOW THE INSTRUCTIONS DESCRIBED IN THIS MANUAL This device has been manufactured to operate risk free for its specific purpose as long as it is installed operated and maintained according to the instructions contained in this manual the environmental conditions and the voltage of the power supply correspond to those specified All other uses and modifications made to the device that are not authorised by the manufacturer are considered incorrect Liability for injury or damage caused by the incorrect use of the device lies exclusively with the user Please note that this unit contains powered electrical devices and therefore all service and maintenance operations must be performed by specialist and qualified personnel who are aware of the necessary precautions Disconnect the machine from the mains power supply before accessing any internal parts INFORMATION FOR USERS ON THE CORRECT HANDLING OF WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT WEEE In reference to European
43. ital input RW C Defrost start delay from controller power on or on from digital input min 0 to 180 0 d6 Display control during defrost RW C Display management during defrost Oto 2 0 0 TEMP DF display the temperature alternating with the symbol dF 1 FIXED TEMPERATURE hold on last temperature displayed 2 dF display the message dF PST only d7 Enable skip RW C Enable skip defrost function Oto 1 0 defrost 0 DISABLED 1 ENABLED d8 High temperature alarm exclusion RW F High temperature alarm bypass time after defrosting and or door open min 0 to 600 60 after defrost door d9 Defrost priority on the compressor RW C Priority of defrost over protection times Oto 1 0 protection dd Dripping time after defrost RW F Dripping time min 0 to 15 2 dl Interval between two defrost RW F Interval between two consecutive defrosts hours Oto 192 8 dP Maximum duration RW F Maximum defrost time min 0 to 180 30 of a defrost dt Defrost end temperature RW F End defrost temperature C 50 0 to 40 30 0 15 5 ALr Alarm parameters Screen description 9 Description AO Fan and alarm differential RW C Temperature alarm return and fan activation differential C 0 1 to 2 0 see parameters F1 AH and AL 20 0 A1 3 Digital input 1 3 configuration RW C Configuration of digital inputs 1 to 3 see note 1 0to 9 0 0 None 1 Remote alarm Remote delayed alarm Enable defros Start ext defrost immedia
44. ller Ed1 Superheat probes out of range The valve is controlled by reading the superheat which in turn is the difference between the value measured by the evaporator probe either pressure or temperature depending on parameter PSt and the suction temperature probe If these probes are faulty or out of range the controller is no longer able to manage the valve and control is terminated signalling the presence of a serious alarm e check the electrical connections e check the condition of the probes 14 2 2 Alarms relating to the electronic valve Check the parameters P1 PH P7 P9 PM1 PM4 LSh Low superheat When the threshold set by parameter P7 is exceeded a delay set for parameter P9 starts after which this alarm is generated e check the mechanical condition of the valve e check that the readings and the positions of the probes are correct 14 23 Temperature alarms Check the parameters AL AH Ad St and AO LO Low temperature alarm The control probe has detected a temperature lower than the set point by a value greater than parameter AL e check the correct operation of the temperature probes The alarm is reset automatically when the temperature returns within the set limits see parameters AL and A0 High temperature alarm The control probe has detected a temperature higher than the set point by a value greater th
45. ller attempting to modify it Obviously if the superheat value is outside of this interval the controller would immediately be activated Proportional gain Integral time Derivative time The proportional parameter P4 integral parameter P5 and derivative parameter P6 constants are the main control parameters These define the superheat PID control algorithm Refer to classic PID control theory for a more detailed description of their meaning Note The proportional constant Kp defines the gain not only for the PID control but also for all the active protection functions LOW SHeat protection LOP protection MOP protection HiTcond protection LOW SuperHeat Low subcooling threshold Parameter P7 defines the activation threshold for the low superheat protection function Below this value another control function is activated in addition to the PID with programmable constant parameter P8 When this threshold is crossed the timer parameter P9 starts for the low superheat alarm if activated MOP High suction pressure threshold Maximum Operating Pressure indicated in saturated C Parameter PM1 defines the high pressure protection activation threshold Above this value integral control starts using a constant that can be set parameter PM2 so as to maintain the saturated suction temperature below the set value Note The MOP protection tends to CLOSE the expansion valve This means
46. me as the third probe Select the remote display 7 Remote display type RW C 0 SMALL KEYPAD PST small with three buttons Oto 1 0 1 READ ONLY PST small display only 8 53 probe calibration RW C Calibration of probe S3 C ni 0 Select end defrost mode also with third probe S3 The defrost ends 1 fe 0 DISABLED when the temperature of the probe selected by 10 is greater than the end defrost End defrost with air ee 9 bn probe RW C temperature dt Oto 1 0 1 ENABLED when both the temperature of the probe selected by 10 and the temperature of the third probe are greater than the end defrost temperature dt Select the probe used to end the defrost procedure 10 End defrost probe RW F i B eee fraorivprobel 0 to 2 2 2 DEFROST PROBE jc probe calibration pwy Calibration of probe 1 C pe 0 a P2 Probe calibration pg C Calibration of probe 2 e kr 0 Select the probe displayed on the main screen 0 NOT PRESENT no probe User interface 1 AIR OFF PROBE room probe management RW gt DEFROST PROBE sii les 3 AIR ON PROBE third probe 4 REGULATION PROBE virtual probe Configuration of the function of probe S1 S1 probe 0 NOT PRESE T S1 konfiguration mode RW C 1 AIR OFF PROBE room probe 0to3 1 2 DEFROST PROBE 3 AIR ON PROBE third probe Configuration of the function of probe S2 S2 probe 0 NOT PRESE T S2 configuration mode RW C 1 AIR OFF PROBE room probe 0 to 3 2
47. nt to the supervisor allowing real time monitoring even from a remote location The alarms can be divided into groups e Alarms relating to the probes e Alarms relating to the electronic valve e Temperature alarms e HACCP alarms Alarms relating to communication between the units e Alarms relating to the digital inputs Other signals 14 2 1 Alarms relating to the probes Check the parameters 4 S1 S3 B1 B7 PSt PEL PEH rE Control probe erro e probes not working the probe signal is interrupted or short circuited e probes not compatible with the instrument If control is based on the virtual probe value of parameter 4 between 0 and 100 this error will be generated only when both the probes are broken In fact the breakage of just one of the two probes automatically moves control to the other probe El Room probe error e probe not working the probe signal is interrupted or short circuited e probe not compatible with the instrument E2 Evaporator probe error e probe not working the probe signal is interrupted or short circuited e probe not compatible with the instrument E3 Third probe error e probe not working the probe signal is interrupted or short circuited e probe not compatible with the instrument EO Communication error with the PST terminal This error may arise if there is no communication between the controller and the terminal even if power to the latter is supplied by the contro
48. of 5th defrost min 0 to 59 0 d 67 defrost time RW C Weekday of 6th defrost see parameter d1 0 to 10 0 h6 67 defrost time RW C Hours of 6th defros hours Oto 23 0 m6 67 defrost time RW C Minutes of 6th defrost min 0 to 59 0 Code 03P220221 rel 1 0 dated 28 10 05 35 Screen description Description d7 7 defrost time RW C Weekday of 7th defrost see parameter d1 0 to 10 0 h7 V defrost time RW C Hours of 7th defrost hours Oto 23 0 m7 77 defrost time RW C Minutes of 7th defrost min 0 to 59 0 d8 8 defrost time RW C Weekday of 8th defrost see parameter d1 Oto 10 0 h8 8 defrost time RW C Hours of 8th defrost hours Oto 23 0 m8 8 defrost time RW C Minutes of 8th defrost min 0 to 59 0 15 11 EEv Valve parameters Screen description Description P1 EEV Type RW C Type of valve 0 to 2 0 7 PWM valve with PWM control 8 STEPPER valve with step control 9 NOT PRESENT PH Refrigerant Type RW C Type of refrigerant 0 to 10 2 0 R22 1 R134a 2 R404a 3 R407c 4 R410a R507 R290 7 R600 R600a R717 10 R744 PPE PWM period RW C Period of the PWM signal S 3 0 to 10 0 6 0 CP1 Start up EEV opening RW C Initial valve
49. ontrol status t Time rE Control probe broken or not connected alarm c4 Safety control ON time c5 Safety control OFF time Fig 10 This function is used to keep the utility operating even when there is a control probe fault alarm rE Specifically this function is used to decide the control on time c4 and off time c5 If the alarm rE is reset control restarts normally again without requiring the intervention of the maintenance personnel 7 5 Temperature monitoring Parameters used e ra enable maximum and minimum temperature recording e rt time elapsed since starting to monitor the maximum and minimum temperature e rH maximum temperature recorded in the interval rt e rL minimum temperature recorded in the interval rt Enables temperature monitoring recording the maximum rH and minimum rL temperature reached in the interval rt max 999h The monitoring function starts when r5 is set to 1 To stop temperature monitoring set r5 to 0 After 999 hours the max and min temperatures are no longer recorded as the maximum monitoring time allowed by the instrument has been reached Reset r5 to start the monitoring again Code 03P220221 rel 1 0 dated 28 10 05 16 8 Night time operation 8 1 General operating principle Parameters used e Alto A3 7 input associated with the curtain switch e r6 night time control with third probe S3
50. or Ethernet serial communication adapter supplied separately The accessories available for t The variables available to supervisor are shown in the following table See the list of parameters for an extended description Ref Idx T Flow Ref Idx T Flow Ref Idx T Flow Ref Idx T Flow Ref Idx T Flow Digital variables rE 53 D R c8 25 RW tSD 74 R C 13 A RW MP1 1 D RW L01 54 D R cc 26 RW tSm 75 R d 14 A RW MP2 2 D RW N 55 D R d0 27 RW tSy 76 R P2 15 A RW MP3 3 D RW N2 56 D R d5 29 RW tEH 77 R P3 16 A RW MP4 4 D RW N3 57 D R d8 30 RW tEM 78 R P4 17 A RW MP5 5 D RW N4 58 D R dd 31 RW tED 79 R P5 18 A RW MP6 6 D RW N5 59 D R dl 32 RW tEm 80 R P6 19 A RW MP7 7 D RW Res HACCP 60 D RW dP 33 RW tEy 81 R P7 20 A RW MP8 8 D RW PS 61 D RW dM 34 RW B1 82 RW P8 21 A RW P 9 D RW Nohaccpalr 62 D R dPM 35 RW 82 83 RW PM1 22 A RW On Off 10 D RW MOP 63 D R It 36 RW B3 84 RW PM2 23 A RW Rtc Present 11 D R dr 64 D R 4 37 RW B4 85 RW PM4 24 A RW r3 12 D RW tC 65 D R 7 38 RW 85 86 RW Pol 25 A R 15 13 D RW MA 66 D R S1 39 RW 86 87 RW Po4 26
51. perate based on the setting of parameter F3 For further details on the dripping and post dripping phases see the section on the fans 10 5 Cyclical defrost MasterCase2 offers the possibility to configure cyclical defrosts that is defrosts that are repeated cyclically over time Parameter dl manages this type of defrost with the procedure being repeated after the number of hours set with this parameter The time is restarted whenever a defrost is completed even non cyclical ones If dl is equal to 0 dl 0 cyclical defrosts are disabled In a LAN the activation of a cyclical defrost on the master also activates a defrost on the connected Slaves network defrost 10 6 Defrost on start up This functions activates a defrost when the instrument is switched on based on the setting of parameter d4 This function can be useful when due to frequent power failures and the consequent resetting of the defrost timer see parameter dl the number of planned defrosts may be reduced and therefore be insufficient In multi utility systems to avoid the simultaneous defrosting of all the units when power returns set parameter d5 corresponding to the defrost delay to different values 10 7 Network defrost With each programmed or forced defrost except for the local manual defrosts the Master unit transfers the defrost call to all the Slave units the various instruments in the pLAN network can be programme
52. r and consequently the contact remain open for a time greater than d8 the display shows the alarm code dr and the controller returns to the operating mode it was in prior to the opening of the door Specifically 1 if the controller was in Duty Setting mode it returns to Duty Setting 2 if the controller was in continuous cycle mode it returns to continuous cycle mode and the maximum duration of the continuous cycle is not affected by the time the door was open 3 ifthe controller was in defrost mode it remains in defrost mode When the controller is restarted the set safety times are observed see type c parameters Al to A3 A8 6 remote ON OFF By setting the input for this function the controller can be switched or off using an extemal contact Switching off is not equivalent to disconnecting power but rather is a logical Off that is the controller goes into standby ignoring all the digital inputs and outputs the defrost requests continuous cycle and Duty Setting The controller however still continues to display the temperature alternating with the message Off on the PST display or the message UNIT OFF on the PGD display 1 Contact closed controller ON 2 Contact open controller OFF Al to A3 A8 7 curtain switch The digital input set to this value is used to activate deactivate the light relay output when the corresponding contact is opened closed In addition if the parameter Stn
53. robe e 9 end defrost also with third probe S3 r3 enable alarm Ed defrost ended by timeout The defrost function has the task of removing any frost or ice on the evaporator optimising energy consumption and maximising performance MasterCase2 offers different types of programmable defrosts e cyclical defrost e defrost from Real Time Clock e defrost at instrument start up There are also different types of forced defrosts e manual defrost from LAN e manual local defrost e defrost from digital input The following types of defrost are available these can be selected using parameter d0 e heater end by temperature or after a maximum safety time timeout e hot gas end by temperature or after a maximum safety time timeout e heater end by time e hot gas end by time If parameter r3 1 when the defrost procedure ends after having reached the maximum time d0 0 or 1 the Ed alarm is signalled to indicate a possible problem N B All the defrosts except for the local manual defrosts are transferred from the master to the slaves over the pLAN network 10 2 Structure of the defrost function The defrost procedure features three phases e Actual defrost e Dripping wait e Post dripping Re f f Key gt Reg Control status t Def Status of the defrost output De i dF Defrost operation actual defrost dd Dripping wait time t Fd Post dripping time eo ME ms tA
54. setpoint starts at RW C ight time set point start minutes min 0 to 59 0 hSd Night setpoint stops at RW C ight time set point end hour hours Oto 23 0 hSd Night setpoint stops at RW C ight time set point end minutes min 0 to 59 0 Code 03P220221 rel 1 0 dated 28 10 05 34 15 9 HcP HACCP parameters Screen description Description tr HACCP alarm delay RW F HACCP alarm delay min 0 to 180 0 3 HACCP disabled tA Haccp alarm type R F Type of HACCP alarm 0 to 2 0 4 no alarm 5 HA alarm 6 HF alarm tSH Haccp alarm start R F HACCP alarm start hours tSM Haccp alarm start R F HACCP alarm start minutes tSd Haccp alarm start R F HACCP alarm start day tSm Haccp alarm start R F HACCP alarm start month tSY Haccp alarm start R F HACCP alarm start year tt ax temperature during haccp alarm R F Maximum temperature reached during the most recent HACCP alarm oC 80 0t0 90 0 50 0 tEH Haccp alarm end at R F HACCP alarm end hours tEM Haccp alarm end at R F HACCP alarm end minutes tEd Haccp alarm end at R F HACCP alarm end day tim Haccp alarm end at R F HACCP alarm end month tEY Haccp alarm end at R F HACCP alarm end year to Reset haccp history RW F Delete the data saved Oto 1 0 15 10 rtc RTC parameters Real Time Clock
55. sibility to directly control the injection of refrigerant into the evaporator with lower and more stable superheat values higher evaporation temperatures and consequently greater humidity and a more constant temperature guaranteeing better product conservation and quality Parameters used e Alltype P parameters 11 2 Configuration of the system parameters Select the type of valve P1 The MasterCase2 controller can control two different types of valve Parameter P1 is used to set the model installed e PI 0 PWM PWM valve e P1 1 STEPPER Valve with stepper motor e P1 2 NONE Valve not installed Note Whenever this parameter is modified the control will need to be switched off and on again so as to load the internal values associated with the type of valve chosen Refrigerant PH Parameter PH sets the type of refrigerant used on the unit This setting is required for the calculation of the saturated evaporation temperature For refrigerants with glide the dew point is used Superheat set point P3 Parameter P3 indicates the superheat control set point Dead band P2 Parameter P2 indicates the dead band that is the semi interval of temperatures around the superheat set point in which there are no control actions For example a value of 1 C for this parameter with a set point of 5 C means that the superheat can vary between 4 C and 6 C without the contro
56. sing the UP and ALARM 98 buttons at the same time After a few seconds the following screen will be displayed PLAN ADRESS 0 UP INCREASE DOWN DECREASE ENTER SAVE amp EXIT gt h N y To change the address simply use the UP D and DOWN y buttons and then press ENTER a to confirm Code 03P220221 rel 1 0 dated 28 10 05 25 13 3 Downloading the parameters All the instruments in the MasterCase2 series have the possibility of transferring the parameter settings from the master to the slaves across the pLAN local network This operation is used to save time in programming the instruments that are used in the same LAN and that would have similar settings During the transfer phase all the parameters are downloaded from the master to the slaves except for those that involve the individual controller clock setting defrost times etc The following list summarises the parameters that are transferred via pLAN from the Master to the Slaves for a more detailed description of each individual parameter see the table of parameters 10 c0 dM PEL 4 c1 dP PH 1 2 dPM PL1 9 c3 dt PL2 B1 c4 FO PM1 B2 co FI PM2 B3 c6 F2 PM3 B4 c8 F3 PM4 B5 cc Fd RRE B6 CPI H3 Pst B7 do H4 rl S1 d2 P1 12 S2 d3 P2 13 S3 d4 P3 r4 SL1 d5 P4 r5 fi d6 Po 16 A0 d7 P6 rd A7 d8 7 St Ad d9 P8 tr AH dd Pg AL dl PEH 13 4 Failed download signal When the parameter download procedure starts a screen is displayed indi
57. ssing the type F parameters e press the El button e press the d button until selecting the password entry field in the Parameters section e press the button again without entering the password e select the desired menu item by pressing and v and then e scroll using d and v until displaying the desired parameter 2 1 2 Accessing the type C parameters e press the og button e press the button until selecting the password entry field in the Parameters section e press the and ES buttons until displaying 22 password to access the type C parameters e confirm by pressing e select the desired menu item by pressing and ES and then d e scroll using and E until displaying the desired parameter 2 1 3 Modifying the parameters After having displayed the first parameter either type C or type F proceed as follows e scroll using d and ES until displaying the parameter to be modified e press a to enter the mode for modifying the associated value if there is more than one parameter on the screen press the d button until reaching the desired parameter e modify the value using d and or e press to confirm and save the value e if there is more than one parameter on the screen press the a button until cursor flashes in the top left corner of the screen e repeat all the operations under modifying the parameters to change the values of any other parameters 2 1 4 Exitin
58. st 0 FANS ON OFF IN dd fans on off during dripping dd 1 FANS ALWAYS OFF 2 FANS ALWAYS ON fans on even during the dripping phase dd Oto 2 Fd After dripping fan stopping RW F Fan off time during post dripping min Oto 15 15 7 CnF Configuration parameters Screen description Description HO Serial address Supervisor RW C Supervisor serial address 0 to 199 1 H3 Enable On Off from keyboard RW C Enable ON OFF from terminal Oto 1 1 H4 Enable On Off from supervisor RW C Enable ON OFF from supervisor Oto 1 0 01 8 Digital Output 1 8 configuration RW C Configuration of digital outputs 1 to 8 0to 9 0 REGULATION control 1 FAN 2 DEFROST EVAP 1 3 DEFROST EVAP 2 4 LUGHT NIGHT BLIND light curtain output 5 TRIM HEATER 6 ALARM 7 ON OFF SOLENOID 8 NET COMPRESSOR 9 NONE Sn Number of slaves RW C Number of slaves only on the master 0to5 0 0 LAN not present 15 8 SEt Set point parameters Screen description Description St Temperature setpoint RWI F Set point C rltor2 20 0 Stn Select night setpoint type RW C Select night time set point mode 0to 2 0 O NONE 1 FROM DIGITAL INPUT See A1 to 3 7 2 FROM RTC hSn Night setpoint starts at RW C ight time set point start hour hours Oto 23 0 mSn Night
59. te defrost from external contact Door switch 6 Remote on off Blind switch curtain switch Start duty setting Door switch regul on door switch with control ON A7 Detection delay time for delayed RW C Alarm delay from digital input A1 to 3 2 min 0 to 180 180 alarm input A8 irtual digital input configuration RW C Virtual digital input configuration see parameters A1 3 0to 9 0 Ad Temperature alarm delay RW C Temperature alarm delay min 0 to 180 120 AH High temperature alarm RW F High temperature alarm deviation from the set point C Oto 20 0 0 0 AL Low temperature alarm RW F Low temperature alarm deviation from the set point C Oto 20 0 0 0 Ar Slave remote alarm signal enabling RW C Enable the master to signal the slave alarms Oto 1 1 on master only on the master Code 03P220221 rel 1 0 dated 28 10 05 33 15 6 FAn Evaporator fan management parameters Screen description Description FO Fan management RW C Fan management 0 ALWAYS ON except in cases F2 F3 Fd 1 THERMOSTAT CONTROLLED fans controlled based on absolute set point F1 Dto 1 F1 Fan start up absolute setpoint RW F Fan off time o 40 0 to 50 0 F2 Fans off with compressor off RW C Fans off when control off 0 DISABLED 1 ENABLED Active only if FO 0 Oto 1 F3 Fans manage during defrost RW C Fan management during defro
60. that if the reason why a high pressure situation occurred is temporary compressor start sudden variation in the refrigerant charge modulation of the cooling capacity etc the refrigerant superheat temperature on the suction side may be low or drop quickly In these cases the MOP protection and the superheat control act together and there are no limits to either If on the other hand the high pressure has been reached at the same time as particularly high or normal superheat values for example the unit was started with very high temperatures of the product being cooled the unlimited and extended action of the MOP may involve a refrigerant suction temperature that is excessive for the correct operation of the compressor For this reason a limit has been introduced to the maximum superheat temperature described below high suction temperature threshold MOP delay at start This is the delay time for the activation of the MOP protection function whenever the control is activated both when the unit is started and whenever deviating trom the set point lt can be set using parameter PM3 This allows regular restarts before activating the MOP function High suction temperature threshold Parameter PM4 sets the maximum temperature thermometric allowed for the gas leaving the evaporator This parameter therefore limits the action of the MOP protection so that when reached the corrective action of the protection function is stopped unt
61. the room probe defrost probe and third probe and the physical inputs B4 B5 and B6 the default configuration associates the physical inputs as follows B4 room probe S1 B5 defrost probe S2 e BE third probe S3 The manual often uses the term S1 to indicate the room probe S2 the defrost probe and S3 the third probe this is valid naturally only for the default configuration of the board 4 5 Virtual probe The parameter 4 defines a non existent probe used for the normal control functions This parameter determines the weighted average used to calculate the reference control probe value based on the reading of the room probe and the third probe The formula is the following 100 4 xS1 4 xS3 100 virtual probe where S1 room probe and S3 third probe If 4 is set to 0 the virtual probe coincides with the room probe if set to 100 the virtual probe coincides with the third probe If control is based on the virtual probe value of parameter 4 between 0 and 100 the breakage of one of the two probes automatically moves control to the other probe Code 03P220221 rel 1 0 dated 28 10 05 12 5 Digital output configuration 5 1 General operating principle The MasterCase2 series instruments have eight digital outputs that can be configured using parameters 01 02 03 04 05 06 07 08 hereinafter 01 to 08 associated respectively with the outputs from DO1 to DO8 Multiple outputs can be con
62. tion from RTC If the controller is fitted with the RTC option operation can switch from the daytime to the night time set point and vice versa by setting two time bands see parameters hSm mSn hSn hSd and the figure below The actions performed will be the same as described in the previous point Stn 1 and Ax 7 Ifa digital input has been programmed as the curtain switch Ax 7 the change in status will only activate or deactivate the light output temperature 1 1 1 i 1 hSn mSn hSd mSd Code 03P220221 rel 1 0 dated 28 10 05 17 9 Fans 9 1 General operating principle The operation of the fans can be divided into four phases 1 Normal operation 2 Defrost 3 Dripping 4 Post dripping 9 2 Normal operation Parameters used e FO fan operating mode e F1 fan off time e F2 fan operation based on the control status e AO temperature alarm return and fan activation differential During normal operation the fans can be managed by the fan controller which manages them according to the temperature measured by the end defrost probe S2 where F1 0 or alternatively can be always on and stop when the controller is switched off based on the settings of parameters F2 where FO 0 FO 0 F2 0 FO 0 F2 1 Pwr Pwr I I I Reg Reg gt i i t Fan Fan t t Fig 12 Fig 13 FO 1 Key Pwr Enable control Sys ON Reg
63. urtain closed See parameters Stn r4 and r6 Contact closed activation of the duty cycle setting see parameters c4 and c5 Contact open deactivation return to normal control 9 Door switch with control ON As for function 5 but the controller remains active 8 Duty cycle setting from external contact Code 03P220221 rel 1 0 dated 28 10 05 38 CAREL Technology amp Evolution CAREL S p A Via dell Industria 11 35020 Brugine Padova Italy Tel 39 049 9716611 Fax 39 049 9716600 http www carel com e mail carel carel com Agency Code 03P220221 rel 1 0 dated 28 10 05
64. viation from the set point tr HACCP alarm delay To Temperature alarm delay HA HA alarm HACCP HAt HA alarm duration If during operation the temperature measured is greater than the threshold represented by the sum of the parameters AH high temperature alarm threshold and St set point for a time greater than the sum of the parameter tr specific for the HACCP alarms and the parameter Ad temperature alarm delay the alarm HA is activated When the event occurs the following data are saved e hour minutes and day month year the alarm condition started e type of alarm e maximum temperature reached after the activation of the alarm e hour minutes and day month year the alarm condition ended 12 3 HF alarm Key T Temperature control probe t Time St Set point AH High temperature alarm deviation from the set point tr HACCP alarm delay To Temperature alarm delay HF HF alarm HACCP HFt HF alarm duration Fig 24 This is activated after a power failure if when power returns the temperature is higher than the threshold represented by AH St The following data are saved e hour minutes and day month year the power failure ended e type of alarm e maximum temperature reached after the activation of the alarm e hour minutes and day month year the alarm condition ended Code 03P220221 rel 1 0 dated 28 10 05 24 13 Network functions 13 1 Local n

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