Manual VEX 200 PU_ING-v3.ai
Contents
1. 0 0 24 0 hours tens of minutes If Plant starting function is enabled for all FOt time the function is disabled automatically see Plant starting function paragraph PI PARAMETERS trained staff CyP Cycle Period 1 15s it permits to set cycle time Pb Proportional band 0 1 50 0 1 90 F PI proportional band rs Band Offset 12 0 12 0 C 21 21 F PI band offset inC Integration time 0 255s PI integration time PROBE PARAMETERS tPP type of Pressure transducer PP LAn it sets type of pressure transducer to use PP 4 20mA pressure transducer or ratiometric transducer 0 5V LAn the pressure signal arrives from another VEX module PA4 Probe value At 4mA or At OV 1 0 P20 bar 14 PSI 10 P20 kPA 10 pressure value measured by probe at 4mA or at OV related to PrM parameter P20 Probe value 20mA or At 5V PA4 50 0 bar 725 psi 500 kPA 10 pressure value measured by probe at 20mA or at 5V related to PrM parameter oPr Pressure probe calibration 12 0 12 0 bar 174 174 psi 120 120 kPA 10 ttE type of tEmperature probe PtM Ntc it allows to set the kind of probe used by the instrument PtM Pt1000 ntC NTC probe otE Temperature probe calibration 12 0 12 0 C 21 21 F DIGITAL INPUTS i1P Digital Input 1 Free of voltage digital input polarity cL OP CL activated when closed OP activated when opened i1F Digital Input 1 Free of voltage digital input function CC2. P20 bar psi kKPA 10 if suction pressure exceeds maximum operating pressure value instrument signals situation with alarm LED H related to PrM parameter LOP Lowest Operating Pressure PA4 P20 bar psi kKPA 10 if the suction pressure comes down to this value a low pressure alarm is signalled with alarm LED L related to PrM parameter PHy Pressure alarm Hysteresis 0 1 5 0 bar 1 72 PSI 1 50 kPA 10 alarm hysteresis to disable alarm signalling dML delta MOP LOP 0 100 when a MOP alarm occurs valve will close of the dML percentage every cycle period until MOP alarm is active When LOP occurs valve will open of the dML percentage every cycle period until LOP alarm is active tPA Maximum time between two MOP and or LOP events 0 0 42 0 min tens of seconds time interval to calculate the number of the pressure switch activation nPA Number of events before locking 0 Off 100 number of MOP or LOP events during the tPA interval before locking instrument MSH Maximum SuperHeat alarm LSH 32 0 C LSH 176 F when superheat exceeds this value an high superheat alarm is signalled after interval SHd LSH Lowest SuperHeat alarm 0 0 MSH C 32 MSH F when superheat goes down to this value a low superheat alarm is signalled after interval SHd SHy SuperHeat alarm Hysteresis 0 0 25 5 C 1 77 F hysteresis for superheat alarm deactivation SHd SuperHeat alarm activation delay 0 255s when a superhe
3. Free of voltage digital input polarity Free of voltage digital input function CCL rL dEF Digital input 1 free of voltage 0 255 min activation delay l Main voltage digital input polarity Main voltage digital input function CCL rL dEF Digital input 2 Main voltage activation 0 255min delay ALARMS 0 0 42 0 hours tens of Alarm delay after restarting regulation tdA Type of alarm signalled by relay pen A cia LPL Lower pressure limit for superheat PA4 P20 bar PSI regulation related to PrM parameter kPA 10 Maximum operating pressure threshold PA4 P20 bar PSI related to PrM parameter kPA 10 A 1 Minimum suction pressure limit related PA4 P20 bar PSI to PrM parameter kPA 10 5 2 0 1 5 0 bar 1 72 psi Pressure alarm Hysteresis 1 50 kPA 10 LOP d Maximum time between two MOP 0 0 42 0 hours tens of and or LOP events seconds delta MOP LOP 0 100 nPA Number of events before locking 0 Off 100 LSH 32 0 C LSH Maximum superheat alarm 176 F MSH F Lo cF CL Pr2 CL Pr2 Pr2 CL Pr2 CL Pr2 Pr2 Pr2 LL Pr2 0 5 Pr2 1 0 Pr2 0 5 Pr2 1 Pr2 30 Pr2 Pr2 Pr2 0 0 Pr1 5 Pr Pr2 1 PHy ML LSH SHy Frc a Teroare potea reo Presentera ew F ananman Baad ES probe Feecheesediroutsae e ani omnsae n C ae A Second level menu Pr1 Pr2 Pr2 Pr2 Pr1 Pr2 Pr1 Pr1 Pr1 Pr1 Pr1 Pr2 Pr2 Pr2 Pr2 Pr1 15 EXAMPLE O
4. In N IL RS485 N C Common N O DI 2 Supply 930V 230V 24 110Vac Models Power supply high voltage digital input and valve output are respectively 24Vac or 110Vac 14 STANDARD VALUES Label Description Range Default Level R22 134 404 407 PEo Probe Error opening percentage 0 100 PEd Probe Error delay before stopping Aabadie sor regulation OPE Start opening Percentage 0 100 Start Function duration 0 05420 minutes tens 1 3 Pr2 of seconds Weim 0 0 42 0 minutes tens 400 Pe of seconds delta SuperHeat 0 1 10 C 1 50 F dOP delta Opening Percentage 0 100 inb injection behaviour cL rEG sti Stop regulation interval oie hours tenis oF minutes Maximum opening percentage 0 100 100 0 0 24 0 hours tens of minutes FOL Forced Opening time out PI PARAMETERS trained staff Cycle Period Pb Proportonaibana one 8norcrtesorr 4o Pe Type of pressure transducer PP LAn 1 0 bar 14 PSI 10 Pro kPA 10 P20 Probe value at 4mA or at OV related to PrM parameter Probe value at 20mA or at 5V related PA4 50 0 bar 725 to PrM parameter PSI 500 kPA 10 12 0 12 0 bar 174 Pressure probe calibration 174 psi 120 120 kPA 10 0 NS Pr2 type of tEmperature probe PtM ntc PtM Temperature probe calibration 12 0 1 A 21 o 9 LI D on VEX 200 PU 3 4 OSAK At User manual DIGITAL INPUTS
5. F APPLICATION OF F TSF Pressure Pressure Transducer Repeater 1V In Temperature Probe 8 3 A 250V RS485 N C Common N O Supply 230V Osaka Solutions SL C Lluis Sagnier 46 08032 Barcelona Spain tel 34 93 435 14 95 fax 34 93 436 59 12 http www osakasolutions com VEX 200 PU 4 4
6. L rL dEF CCL cooling call rL digital input activates relay dEF digital input signals that defrost is active did Digital Input 1 Free of voltage activation delay 0 255 min this activation delay is used only if digital input is configured as rL i2P Digital Input 2 High voltage digital input polarity CL OP CL activated when closed OP activated when opened i2F Digital Input 2 High voltage digital input function CCL rL dEF CCL cooling call rL digital input activates relay dEF digital input signals that defrost is active d2d Digital Input 2 High voltage activation delay 0 255 min this activation delay is used only if digital input is configured as rL ALARM dAO Alarm delay after restarting regulation 0 0 42 0 min tens of seconds time between digital input activation configured as CCL and alarm signalling tdA Type of alarm signalled by relay ALL SH PrE DI LOC inJ ALL all alarm SH superheat alarm PrE pressure alarm Dl activation only when digital input configured as rL is actived LOC lock alarm in case of nPA events reached inJ activation in cases of injection alarm LPL Lower Pressure Limit for superheat regulation PA4 P20 bar psi KPA 10 when suction pressure comes down to LPL the regulation is performed with a LPL fixed value for pressure when pressure comes back to LPL the normal pressure value is used related to PrM parameter MOP Maximum Operating Pressure threshold PA4
7. ODAK Gis User manual VEX 200 PU ON OFF ELECTRONIC EXPANSION VALVE DRIVERS CONTENTS General warning General description Regulation Front panel User interface Parameters list Digital inputs Functions of start up 9 Electrical connections 10 RS485 serial line 11 Display messages 12 Technical data 13 Wiring connections 14 Standard values 15 Example of application T O ee a FPWWWWWWWWHN a cananan 1 GENERAL WARNING 1 1 PLEASE READ BEFORE USING THIS MANUAL This manual is part of the product and should be kept near the instrument for easy and quick reference e The instrument shall not be used for purposes different from those described hereunder It cannot be used as a safety device e Check the application limits before proceeding 1 2 N SAFETY PRECAUTIONS Check the supply voltage is correct before connecting the instrument e Do not expose to water or moisture use the controller only within the operating limits avoiding sudden temperature changes with high atmospheric humidity to prevent formation of condensation e Warning disconnect all electrical connections before any kind of maintenance e Fit the probe where it is not accessible by the End User The instrument must not be opened e n case of failure or faulty operation send the instrument back to the distributor or to Osaka Solutions SL see address with a detailed description of the fault e Consider the maximum current
8. Pr1 level menu 1 Pressing SET W keys for about 3 seconds 2 Instruments shows first parameter in Pr1 menu HEUS Op To enter to Pr2 parameters list 1 Enter to Pr1 2 Select Pr2 parameter and press SET 3 The PAS label will be shown then 0 with 0 blinking 4 Insert 321 password through s and w keys then press SET to confirm 5 6 TO MODIFY THE PARAMETERS VALUE To change the parameter s value operate as follows 1 Enter the Programming mode by pressing the Set and ww key for about 3s a Y 3 Press the SET key to display its value 4 Use s or yw to change its value 5 Press SET to store the new value and move to the following parameter 2 Select the required parameter To exit Press SET yy or wait 30s without pressing a key NOTE the set value is stored even when the procedure is exited by waiting the time out to expire 6 PARAMETERS LIST NOTE All pressure parameters are relatives or absolutes depending on PrM parameter REGULATION FtY Kind of gas R22 134 404 407 410 507 CO2 Type of gas used by plant Fundamental parameter for correct functioning of all system PEO Probe Error opening percentage 0 100 if a temporary probe error occurs valve opening percentage is PEo until PEd time is elapsed PEd Probe Error delay before stopping regulation 0 239 sec on unlimited if probe error duratio
9. at alarm occurs the time SHd have to pass before signalling alarm Frc Fast recovery Constant 0 100s permits to increase integral time when SH is below the set point If FrC 0 fast recovery function is disabled DISPLAY Lod Local display SH PEr P1 P2 SH superheat PEr valve opening percentage P1 value of temperature measured P2 pressure measured by P2 probe CF Temperature measurement units C F C Celsius degree F Fahrenheit degree ATTENTION by changing measurement unit the regulation parameters have to be correctly changed PMu Pressure Measurement units bAr PSI kKPA 10 bAr bar PSI psi PA KPa 10 ATTENTION by changing measurement unit the regulation parameters have to be correctly changed PrM Pressure visualization Mode rEL AbS rEL relative pressure AbS absolute pressure All pressure parameters depend on this parameter CLt CooLing time statistic 0 48h time interval used to evaluate a cooling call statistic During this time comes calculated how much time the cooling call is remained active CLP CooLing Percentage read only Display the percentage of time during which the cooling call was active in the time interval defined by parameter CLt tP1 temperature Probe value read only it shows temperature probe value from P1 PPr Pressure probe value read only it shows pressure probe value The value depends on PrM tP2 temperature from P2 read only it shows temperature obtained from con
10. d hold another time SET keys combination or activate digital input configured as CCL or wait FOt time out 9 ELECTRICAL CONNECTIONS The instrument are provided with screw terminal block to connect wires with a cross section up to 2 5 mm Heat resistant wires have to be used Before connecting wires make sure the power supply complies with the instrument s requirements Separate the probe wires from the power supply wires from the outputs and the power connections Do not exceed the maximum current allowed on each relay in case of heavier loads use a suitable external relay 9 1 PROBES Advised temperature probe placement is Teryperature illustrated in the figure Between 0 and 180 inclination degrees respect to horizontal pipe section For suction pressure probe there aren t particular prescriptions 180 O eee ET T a 10 RS485 SERIAL LINE All models can be connected to the monitoring and supervising system If Mod Std standard ModBUS RTU protocol is used if Mod AdU This last configuration makes possible to use the same serial address of the thermostat that gives the cooling request to VEX In this way it s possible to reduce the number of addresses used 11 DISPLAY MESSAGES Mess Cause Outputs orp None of digital inputs configured as CCL are closed activated ON Pr P2 HSH LPL MOP LOP StF StP alve closed JEF alve cl
11. g mode it selects a parameter or it confirms a value In programming mode it slides the codes of the parameters or it increases their values In programming mode it slides the codes of parameters or it decreases their values KEYS COMBINATIONS h 4 To lock or to unlock the keyboard SET wr To enter to programming mode Press and hold this keys combination about 5 seconds to activate SET Dh valve ON function described in Plant start section If you are in programming mode this combination permits to leave it 4 1 LEDS On display there are some luminous dots Their meaning is described in the following table a MODE ef o OFF Tee ON OFF Sor ol o 5 USER INTERFACE 1 Press and release s key 2 First read only label is showed 3 Slide labels with s or yy arrows 4 Press SET to see read only value to change value to see press SET 5 To leave press and release i SET or wait time out of about 3 minutes VEX 200 PU 1 4 OSAK At User manual 5 2 TO SEE THE SET POINT 1 Press the SET key until the set point will be showed 2 To come back to see temperature wait about 5s or press newly SET key 5 3 TO MODIFY THE SET POINT To change the set point value operate as follows 1 Press the SET key until the set point will be showed 2 Use s OF w to change its value 3 Press SET to store the new value 5 4 TO GO TO PR1 PARAMETERS To enter in
12. n is bigger than PEd then valve totally closes If PEd 240 valve opening is PEo until probe error finishes ESF Enable Start Function n Y n when digital input configured as CCL is activated normal regulation starts immediately Y when digital input configured as CCL is activated valve opens with OPE percentage for time SFd OPE Start opening Percentage 0 100 Opening valve percentage when start function is active and during post defrost phase This phase duration is SFd time SFd Start Function duration 0 0 42 0 min tens of seconds It sets start function duration and post defrost duration During this phase the alarms are neglected ind injection delay 0 0 42 0 min tens of seconds view paragraph 3 1 dSH delta SuperHeat 0 1 10 C 1 50 F view paragraph 3 1 dOP delta Opening Percentage 0 100 view paragraph 3 1 inb injection behaviour rEG cL when an injection problem is signalled if inb cL valve will close completely if inb rEG valve will regulate normaly by PI see paragraph 3 1 Sti Stop regulation interval 0 0 24 0 hours tens of minutes after regulating continuously for Sti time the valve closes for Std time in order to prevent ice creation Std Stop duration 0 60 min it defines stop regulation time after Sti During this stop display shows StP message MnF Maximum opening percentage at normal Functioning 0 100 during regulation it sets the maximum valve opening percentage FOt Forced Opening time out
13. osed EE 11 1 ALARM RECOVERY Probe alarms P1 P2 start few seconds after the fault in the probe they automatically stop few seconds after the probe restarts normal operation Check connections before replacing the probe Max and min alarms HSH LSH MOP LOP automatically stop as soon as the variable returns to normal values 11 2 ALARM EE The instrument is provided with an internal check verifying memory integrity Alarm EE flashes when a failure in the internal memory is detected In such case call the service 12 TECHNICAL DATA Housing self extinguishing ABS Case 4 DIN modules 70x85 mm depth 61mm Mounting DIN RAIL mounted in a omega 3 din rail Protection IP20 Connections Screw terminal block lt 2 5 mm wiring Power supply 24Vac 10 110Vac 10 230Vac 10 50 60Hz 50 60Hz Power absorption 6VA max Display three digits with icons red LEDs height 14 2 mm Inputs 1 temperature probe Pt1000 or NTC 1 pressure transducer 4 20mA o 0 5V Digital inputs 1 free of voltage contact 1 at Main voltage Outputs for valve 30W max Data storage on the non volatile memory EEPROM Kind of action 1B Pollution grade normal Software Class A Operating temperature 0 60 C Storage temperature 25 60 C Relative humidity 20 85 no condensing Resolution 0 1 C or 1 F Precision a 25 C 0 7 C 1 digit 2 easel 0 12V Valve N epeater ove ond 230 3
14. version of pressure value d1S Free of voltage digital input State read only it shows the free of voltage digital input d2S High voltage digital input State read only it shows the high voltage digital input state Adr RS485 Serial Address 1 247 Identifies the instrument address when connected to a ModBUS compatible monitoring system Mod ModBus AdU StD AdU Only for monitoring systems in this case VEX and thermostatic controller are considered an alone instrument it requires a custom library for monitoring systems StD to use VEX in stand alone mode in this case normal Modbus RTU protocol is used Ptb Parameters map read only it identifies parameters map written by factory rEL Release Firmware read only it shows firmware release Pr2 Second level menu VEX 200 PU 2 4 OSAK A 83 User manual 7 DIGITAL INPUTS 13 WIRING CONNECTIONS There are two digital inputs One of them is free of voltage and the other is at supply voltage Both can be configured as cooling call CCL relay activation rL or defrost dEF In this way the cooling call Input can be supplied by devices with direct loads or free voltage loads One of these inputs must be 0 5V configured as cooling call CCL g g call CCL y 7 gnd 8 PLANT STARTING FUNCTION If necessary by pressing and holding SET keys combination for 5 seconds the driver opens completely the valve and shows on display the ON label To disable this function press an
15. vising systems 3 REGULATION The superheat regulation is performed only when the cooling request is active The following scheme shows how device reads the request of cooling Q Comp The regulation is obtained with PI controller that it changes the valve opening percentage Opening percentage is obtained from average of Opening Time respect to CyP time period like following diagram Opening Time Cycle Period CyP 65 30 time With opening percentage we mean percentage of cycle period where valve is open For example if CyP 6s and we say The valve opening percentage is 50 we mean the valve is opened for 3s during cycle period 3 1 INJECTION SIGNALLING The graph illustrates how to work the function for injection problems signalling When superheat stays in dSH delta SuperHeat band and valve increases continuously its opening more than dOP delta OPening for ind time injection delay the driver signals a gas problem When this event occurs the behaviour of the valve can be fitted to your demand Trough inb injection behaviour parameter you can choose if the valve have to close completely inb cL or if regulation have to continue normally with PI SH Delta SH dOP Delta Opening ind injection delay inj injection display label aL Valve Opening t i t ind t ttdt Time 4 FRONT PANEL VEX 200 PU He Lo e To display and to modify the set point In programmin
16. which can be applied to each relay see Technical Data e Ensure that the wires for probes loads and the power supply are separated and far enough from each other without crossing or intertwining e n case of applications in industrial environments the use of mains filters our mod FT1 in parallel with inductive loads could be useful 2 GENERAL DESCRIPTION The vex 200 Pu module is able to drive ON OFF electronic expansion valves This module permits to regulate the superheat SH of the fluid that runs into refrigerating unit in order to obtain optimized performance and a climatic or load conditions independent functioning VEX 200 PU modules are equipped with two probe inputs one for 4 20mA or 0 5V pressure transducer and another for Pt1000 or NTC temperature probe A LAN connection permits to transmit the pressure signal to all other VEX modules in order to use only one pressure transducer in multiplexed cabinet applications There are also two configurable digital inputs one of them must be configured to get cooling request The other digital input can be used to signal to the instrument that defrost is in progress The display with icons permits a useful visualisation of the superheat SH of the percentage of opening valve time or the probe values the local keyboard allows to program the instrument without other devices To complete instrument equipment a RS485 serial link permits to connect VEX 200 PU to Osaka monitoring and super
Download Pdf Manuals
Related Search