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User manual - Categories On Carel USA

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1. Fig 2 h Key 1 service serial port 2 adapter 3 USB tLAN converter 4 personal computer 11 Note when using the service serial port connection the VPM program can be used to configure the driver and update the driver and display firmware downloadable from http ksa carel com See the appendix 2 8 Connecting the USB RS485 converter Only on EVD evolution RS485 Modbus models can the configuration computer be connected using the USB RS485 converter and the serial port according to the following diagram gt Network BO 6 G GND w shield 2 Fig 2 i personal computer for configuration 2 USB RS485 converter Key Note the serial port can be used for configuration with the VPM program and for updating the driver firmware downloadable from http ksa carel com to save time up to 8 EVD evolution drivers can be connected to the computer updating the firmware at the same time each driver must have a different network address 2 9 Upload Download and Reset parameters display Procedure 10 press the Help and Enter buttons together for 5 seconds 11 amultiple choice menu will be displayed use UP DOWN to select the required procedure 12 confirm by pressing ENTER 13 the display will prompt for confirmation press ENTER 14 at the end a message will be shown to notify the operation if the operation was successful
2. EVD evolution 0300005EN rel 3 0 18 06 2010 42 CAREL Type of alarm _ Cause of alarm LED Display Relay Reset Effect on control Checks solutions EEPROM dama EEPROM for red alarm ALARM flashing Depends on Replace dri Total shutdown Replace the driver Contact service ged operating and or LED configuration ver Contact unit parameters parameter service damaged EEV motor error Valve motor fault red alarm ALARM flashing Depends on automatic nterruption Check the connections and the con not connected LED configuration dition of the motor parameter Switch driver off and on again LAN error LAN network green ALARM flashing Depends on automatic Control based on Check the network address settings communication ET LED configuration DI1 DI2 error ashing parameter LAN network ETLED ALARM flashing Depends on automatic Control based on Checkthe connections and that the connection error of configuration DI1 DI2 pCO is on and working parameter Connection error NETLED No message No change automatic o effect Check the connections and that the off pCO is on and working Display connec No communi Error message No change replace the o effect Check the driver display and the tion error cation between driver di connectors driver and display splay Adaptive control Tuning
3. Inputs S2 S4 The options are standard NTC probes high temperature NTC combined temperature and pressure probes and 0 to 10 Vdc input For S4 the 0 to 10 Vdc input is not available When choosing the type of probe the minimum and maximum alarm values are automatically set See the chapter on Alarms The auxiliary probe S4 is associated with the Modulating thermostat function or can be used as a backup probe for the main probe S2 Type CAREL code Range CAREL NTC 10KQ at 25 C NTCO HP00 50T105 C NTCO WFOO NTCO HF00 CAREL NTC HT HT 50KO at 25 C NTCO HTOO 0T120 C 150 C per 3000 h NTC built in SPKP TO 40T120 C Tab 6 c A Important in case of NTC built in probe select also the parameter relevant to the corresponding ratiometric pressure probe Parameter description Def CONFIGURATION Probe S2 CAREL NTC CAREL NTC CAREL NTC HT high T NTC built in SPKP TO 0 10 V external signal Probe S4 CAREL NTC CAREL NTC HT high T NTC built in SPKP TO CAREL NTC Tab 6 d Input 3 The auxiliary probe S3 is associated with the high condensing temperature protection or can be used as a backup probe for the main probe S1 If the probe being used is not included in the list select any 0 to 5 V ratiometric or electronic 4 to 20 mA probe and then manually modify the minimum and maximum measurement in the manufacturer parameters corresponding to the
4. UPLOAD the display saves all the values of the parameters on the source driver DOWNLOAD the display copies all the values of the parameters to the target driver RESET all the parameters on the driver are restored to the default values See the table of parameters in chapter 8 oa Prg Esc YW f as Fig 2 j A Important the procedure must be carried out with driver powered DO NOT remove the display from the driver during the UPLOAD DOWNLOAD RESET procedure the parameters cannot be downloaded if the source driver and the target driver have incompatible firmware EVD evolution 0300005EN rel 3 0 18 06 2010 CAREL 2 10 Show electrical connections display To display the probe and valve electrical connections for drivers A and B enter display mode See paragraph 3 4 2 11 General connection diagram 1 I fi cariev ge e rn DC ULE 1 E Sporan l panfoss ACO i Sg epee a ch SEI SEH SER1 ETS ol EX5 6 E I I i EX7 8 I i 4 4 l EVD Battery module E 10 1 E EVBAT00400 E ld r 4A i 3 i i g if a k 1 gr i o i Lie atea I E g G GO I i I I 230Vac 124 Vac 1 i Mo X
5. 13 3 2 Display and keypad ssssssssssscsusssssssseessssssssssssssssssssussaseessseseesssseee 13 3 3 Display mode display 14 3 4 Programming mode display socsessssessssssssssesessssesesaseeissesnsetnet 14 4 COMMISSIONING 15 41 COMMISSIONING cssssssssssssssessssseesssssesenseeeten 15 4 2 Guided commissioning procedure display a15 4 3 Checks after COMMISSIONING ssssssssssssessssesssssssesssssessneseessnssesisesseees 17 DA ONET FUNCTIONS 7 5 CONTROL 18 5 1 Main and auxiliary Control cssssssssssesssssesssssssssssssssssessessesesnsesesen 18 5 2 Superheat control 18 5 3 Adaptive control and aUtotuning n 9 5 4 Control with Emerson Climate Digital Scroll compressor 20 5 5 Control with SIAM ANB scroll COMPLESSO 21 5 6 Superheat regulation with 2 temperature probesS 21 5 7 Advanced regulation sssssssssssussssssussessssssssssassesssssssnaseessseseesnesses 22 5 8 Auxiliary CONTO inini 24 6 FUNCTIONS 27 6 1 Power supply mode 6 2 Network connection fe 6 3 IMPUtS and OUTPUTS sscssssssssseesssssesesseessssnseesssessesssteusnnsensnseseesseeees 64 CONTOLSTATIS ioni 6 5 Advanced control Stats i 30 7 PROTECTORS 32 TA POENOS serrate cece caine tates tg lente bent iii 32 8 PARAMETERS TABLE 35 81 UIE OF SAS UT siii ia 39 8 2 Variables accessible via serial
6. Parameter description Def Min Max UOM CONTROL MOP protection threshold 50 Protection LOP 200 C F threshold 392 MOP protection integration time 20 0 800 s ALARM CONFIGURATION High evaporation temperature 600 JO 18000 s alarm timeout MOP 0 alarm DISABLED Tab 7 d The integration time is set automatically based on the type of main control When the evaporation temperature rises above the MOP threshold the system enters MOP status superheat control is interrupted to allow the pressure to be controlled and the valve closes slowly trying to limit the evaporation temperature As the action is integral it depends directly on the difference between the evaporation temperature and the activation threshold The more the evaporation temperature increases with reference to the MOP threshold the more intensely the valve will close The integration time indicates the intensity of the action the lower the value the more intense the action TLEVAP A MOP_TH MOP_TH 1 mop O OFF o PID OFF 1 1 ON i ALARM OFF D t e a Fig 7 Key T_EVAP Evaporation temperature MOP_TH MOP threshold PID PID superheat control ALARM Alarm MOP MOP protection t Time D Alarm timeout A Important the MOP threshold must be greater than the rated evaporation temperature of the unit otherwise it would be activated unnecessarily The MOP threshold is o
7. CAREL CAREL 6 FUNCTIONS 6 1 Power supply mode EVD evolution can be powered at 24 Vac or 24 Vdc In the event of direct current power supply after completing the commissioning procedure to start control set Power supply mode parameter 1 Parameter Description Def Min Max UOM ADVANCED Power supply mode 0 0 1 0 24 Vac 1 24 Vdc Tab 6 a A Important with direct current power supply in the event of power failures emergency closing of the valve is not performed even if the EVBAT00400 battery module is connected 6 2 Network connection To connect an RS485 Modbus controller to the network as well as the network address parameter see paragraph 4 2 the communication speed also needs to be set in bit s using the Network settings parameter Parameter Description Def Min Max UoM ADVANCED NETWORK SETTINGS 2 0 2 bit s 0 4800 1 9600 2 19200 Tab 6 b Note the following Modbus serial communication parameters cannot be set byte size 8 bits stop bits 2 parity none transmission mode RTU 6 3 Inputs and outputs Analogue inputs The parameters in question concern the choice of the type of pressure probe S1 and S3 and the choice of the temperature probe S2 and S4 as well as the possibility to calibrate the pressure and temperature signals As regards the choice of pressure probe S1 see the chapter on Commissioning
8. control A SH Low_SH_TH 1 I L 1 1 l ON fi l t Low_SH i OFF i toi i ST ON 1 i x t OFF I 1 i LD al B t lt gt Fig 7 a Key SH Superheat A___ Alarm Low_SH_TH_ Low_SH protection threshold D Alarm timeout Low_SH Low_SH protection t Time B Automatic alarm reset LOP low evaporation pressure LOP Low Operating Pressure The LOP protection threshold is applied as a saturated evaporation temperature value so that it can be easily compared against the technical specifications supplied by the manufacturers of the compressors The protector is activated so as to prevent too low evaporation temperatures from stopping the compressor due to the activation of the low pressure switch The protector is very useful in units with compressors on board especially multi stage where when starting or increasing capacity the evaporation temperature tends to drop suddenly When the evaporation temperature falls below the low evaporation emperature threshold the system enters LOP status and is the intensity with which the valve is opened is increased The further the temperature falls below the threshold the more intensely the valve will open The integration time indicates the intensity of the action the lower the value he more intense the action Parameter description Def Min Max UOM CONTROL LOP protection threshold 50 60 72 Protection MOP C F threshold LOP pr
9. e electrical connections by plug in screw terminals e serial card incorporated in the driver based on the model tLAN pLAN RS485 Modbus compatibility with various types of valves universal models only and refrigerants e activation deactivation of control via digital input 1 or remote control via pLAN from pCO programmable controller superheat control with protection functions for low superheat MOP LOP high condensing temperature e adaptive superheat control e function to optimise superheat control for air conditioning units fitted with Emerson Climate Digital Scroll compressor In this case EVD Evolution must be connected to a CAREL pCO series controller running an application program that can manage units with Digital Scroll compressors This function is only available on the controllers for CAREL valves configuration and programming by display accessory by computer using the VPM program or by PlantVisor PlantVisorPro supervisor and pCO programmable controller commissioning simplified by display with guided procedure for setting the parameters and checking the electrical connections e multi language graphic display with help function on various parameters management of different units of measure metric imperial parameters protected by password accessible at a service installer and manufacturer level copy the configuration parameters from one driver to another using the remov
10. l 35VA 85 i TRADRFE240 E Lo ame LL SO gt ha Te ee i A nnnnnnnnnnnnnnn 1 SE rovae AI gg 52 pco be n 4 pz LAN ESE SS 7 3 shield 9 pco PLAN gar L Sa a H shield o e ORS 6 pco ee fo esso D B Rs485 E t Shiel EVD0000E0 tLAN version EVD0000E1 pLAN version GR EVD0000E2 RS485 version battery discharged of fault signal CVSTDUMORO configuration supervision computer digital input 2 configured to signal discharged battery Fig 2 k in combination with Alco EX7 or EX8 valves use a 35 VA transformer code TRADRFE240 Key 1 green A Connection to EVBAT200 300 2 yellow B Connection to electronic pressure probe SPK 0000 or piezoresistive pressure 3 brown transducer SPKTOO CO 4 white iG Connection as positioner 4 to 20 mA input 5 _ configuration computer D Connection as positioner 0 to 10 Vdc input 6 __ USB tLAN converter E Connection to combined pressure temperature probe SPKP00 T0 7 _ adapter 8 ratiometric pressure transducer F Connection to backup probes S3 S4 9 _ NTC probe G Ratiometric pressure transducer connections SPKTOO RO O digital input 1 configured to enable control H Connections o other types of valves 1__ free contact up to 230 Vac A The maximum length of the connection cable to the EVBAT400 500 module is 5 m 2 solen
11. 0 30 barg 6 0 34 5 barg 3 0 44 8 barg 7 0 45 barg 4 remoto 0 5 7 barg 5 remoto 0 10 barg 6 remoto 0 18 2 barg 7 remoto 0 25 barg 8 remoto 0 30 barg 9 remoto 0 44 8 barg 20 segnale esterno 4 20 MA cannot be selected 21 1 to 12 8 barg 22 0 to 20 7 barg 23 1 86 to 43 0 barg A Relay configuration Alarm relay 12 139 1 Disabled 2 alarm relay opened in case of alarm 3 Solenoid valve relay open in standby 4 valve alarm relay opened in stand by and control alarms 5 Reversed alarm relay closed in case of alarm 6 Valve status relay open if valve closed A Probe S4 CARELNTC z 20 147 1 CAREL NTC 2 CAREL NTC HT high temperature 3 NTC built in SPKP TO A DI2 configuration Regulation 10 137 1 Disabled start stop 2 valve regulation optimization after defrost tLAN RS485 3 Battery alarm management Regulation 4 Valve forced open at 100 backup 5 Regulation start stop pLAN 6 Regulation backup 7 Regulation security C Display main var 1 Superheat 45 172 EVD evolution 0300005EN rel 3 0 18 06 2010 36 CAREL o a 3 i Parameter description Def Min Max UOM 2 n E Notes S 2 C Display main var 2 See display main var 1 Valve
12. 290 2900 psig PID proport gain 15 JO 800 PID integration time 150 0 1000 S PID derivative time 5 0 800 S Tab 5 n CAREL Hot gas bypass by temperature This control function can be used to control cooling capacity On a refrigerated cabinet if the ambient temperature probe measures an increase in the temperature the cooling capacity must also increase and so the valve must close EVD evolution EVD evolution aa VI V2 Key Fig 5 9 CP Compressor EV_1 Electronic valves connected in com EV_2 plementary mode Key C__ Condenser Temperature probe CP_ Compressor V1_ Solenoid valve V1 Solenoid valve E Evaporator C__ Condenser V2_ Thermostatic expansion valve V3_ Non return valve v2 Thermostatic expansion valve L Liquid receiver EV_ Electronic valve S __ Heat exchanger reheating F Dewatering filter E Evaporator S Liquid indicator For the wiring see paragraph 2 11 General connection diagram This involves PID control without any protectors LowSH LOP MOP High Tcond see the chapter on Protectors without any valve unblock procedure and without auxiliary control Control is performed on the hot gas bypass temperature probe value read by input S2 compared to the set point Hot gas bypass temperature set point Control is reverse as the temperature increases the
13. 6 h Valve regulation optimization after defrost the selected digital input tells the driver the current defrost status Defrost active contact closed Access Manufacturer programming mode to set the start delay after defrost Discharged battery alarm management if the selected digital input is connected to the battery charge module for EVD evolution EVBATO0400 the controller signals discharged or faulty batteries so as to generate an alarm message and warn the service technicians that maintenance is required See the general connection diagram Valve forced open when the digital input closes the valve opens completely 100 unconditionally When the contact opens again the valve closes and moves to the position defined by the parameter valve opening at start up for the pre position time Control can then start Regulation start stop digital input closed control active digital input open driver in standby see the paragraph Control status A Important this setting excludes activation deactivation of control via the network See the following functions e Regulation backup if there is a network connection and communication fails the driver checks the status of the digital input to determine whether control is active or in standby EVD evolution 0300005EN rel 3 0 18 06 2010 Note that if digital inputs 1 and 2 are set to perform a PRIM function
14. S__ liquid indicator T__ temperature probe time LOP protection threshold 50 60 76 MOP th C F For the wiring see paragraph 2 7 General connection diagram reshold LOP protection integration time 0 0 800 s O MOP protection threshold 50 LOP thre 200 392 C F Note superheat control in a refrigerant circuit with SIAM scroll Li e shold compressor requires two probes for superheat control and two probes MOP protection integration time 20 0 800 s downstream of the compressor for discharge superheat and discharge ae a hold ci 60 76 200 G9 PCA t t trol S 5 5 Igit Cone UNESO lE RIA High Tcond integration time 20 0 800 S PID parameters Superheat control as for any other mode that can be selected with the main control parameter is performed using PID control which in its simplest form is defined by the law w K e 7 fedt T Z Key u t Valve position Ti Integration time e t Error Td Derivative time K Proportional gain Note that regulation is calculated as the sum of three separate contributions proportional integral and derivative e the proportional action opens or closes the valve proportionally to the variation in the superheat temperature Thus the greater the K proportional gain the higher the response speed of the valve The proportional action does not consider the superheat set point but rather only reacts to variations Therefore if the superheat
15. check the electrical connections Stator broken or connected incorrectly Disconnect the stator from the valve and the cable and measure the resistance of the windings using an ordinary tester The resistance of both should be around 36 ohms Otherwise replace the stator Finally check the electrical connections of the cable to the driver see paragraph 5 1 Valve stuck closed Use manual control after start up to completely open the valve If the superheat remains high check the electrical connections and or replace the valve The unit switches off due to LOP protection disabled Set a LOP integration time greater than 0 s low pressure during control only for self contained units LOP protection ineffective Make sure that the LOP protection threshold is at the required saturated evaporation temperature between the rated evaporation temperature of the unit and the corre sponding temperature at the calibration of the low pressure switch and decrease the value of the LOP integration time Solenoid blocked Check that the solenoid opens correctly check the electrical connections and the operation of the control relay Insufficient refrigerant Check that there are no bubbles of air in the liquid indicator upstream of the expansion valve Check that the subcooling is suitable greater than 5 C otherwise charge the circuit The valve is significantly undersized Replace the valve with a
16. diagram O Note this function is only available for CAREL valve drivers 5 5 Control with SIAM ANB scroll compressor A Important this type of control is incompatible with adaptive control and autotuning To be able to use this control function only available for CAREL valve drivers the driver must be connected to a CAREL pCO programmable controller running an application able to manage a unit with SIAM ANB scroll compressor In addition the compressor must be controlled by the CAREL Power speed drive with inverter specially designed to manage the speed profile required by the compressor operating specifications Two probes are needed for superheat control PA TA plus two probes located downstream of the compressor PB TB for discharge superheat and discharge temperature TB control Parameter Description Def CONFIGURATION Main control multiplexed showcase cold room AC chiller with SIAM ANB compressor Tab 5 i Modbus Fig 5 c Key CP Compressor V Solenoid valve C Condenser 5 Liquid gauge L Liquid receiver EV Electronic valve F Dewatering filter E Evaporator TA TB__ Temperature probes_ PA PB__ Pressure probes For information on the wiring see paragraph 2 11 General connection diagram To optimise performance of the refrigerant circuit compressor operation must always be inside a specific area called the envelope
17. read by input S1 There is no PID control nor any protection LowSH LOP MOP High Tcond see the chapter on Protectors no valve unblock procedure and no auxiliary control EVD evolution a Fig 5 Key EV_ Electronic valve A__ Valve opening For the wiring see paragraph 2 11 General connection diagram Forced closing will only occur when digital input DI1 opens thus switching between control status and standby The pre positioning and repositioning procedures are not performed Manual positioning can be enabled when control is active or in standby Analogue positioner 0 to 10 Vdc The valve will be positioned linearly depending on the value of the 0 to OV input for analogue valve positioning read by input S1 There is no PID control nor any protection LowSH LOP MOP High Tcond no valve unblock procedure and no auxiliary control with corresponding forced closing of the valve and changeover to standby status EVD evolution 0300005EN rel 3 0 18 06 2010 24 pT EVD evolution a 100 0 Fig 5 k Key Ev_ Electronic valve A__ Valve opening For the wiring see paragraph 2 11 General connection diagram A Important the pre positioning and repositioning procedures are not performed Manual positioning can be enabled when control is active or in standby 1 O expander for pCO The EVD Evolution driver is connected to the pCO programma
18. 45 barg 8 0 5 to 7 barg barg 9 0 to 10 barg 0 0 to 18 2 barg 1 0 to 25 barg 2 0 to 30 barg 3 0 to 44 8 barg 4 remote 0 5 to 7 barg 5 remote 0 to 10 barg 6 remote 0 to 18 2 barg 7 remote 0 to 25 barg 8 remote 0 to 30 barg 9 remote 0 to 44 8 barg 20 external signal 4 to 20 mA 21 1 to 12 8 barg 22 0 to 20 7 barg 23 1 86 to 43 0 barg Tab 4 g A Important in case two pressure probes are installed S1 and S3 they must be of the same type It is not allowed to use a ratiometric probe and an electronic one Note in the case of multiplexed systems where the same pressure probe is shared between multiple drivers choose the normal option for the first driver and the remote option for the remaining drivers The same pressure transducer can be shared between a maximum of 5 drivers Example to use the same pressure probe 0 5 to 7 bars for 3 drivers For the first driver select 0 5 to 7 barg For the second and third driver select remote 0 5 to 7 barg See paragraph 2 6 Note the range of measurement by default is always in bar gauge barg In the manufacturer menu the parameters corresponding to the range of measurement and the alarms can be customised if the probe used is not in the standard list If modifying the range of measurement the driver will detect the modification and indicate the type of probe S1 as Custo
19. A 61 60 A odul thermost differential 0 1 0 1 0 2 100 180 C CE A 60 59 C odul thermost SHset offset 0 0 0 100 180 K F A 59 58 C CO regul A coefficient 33 100 800 A 63 62 C CO regul B coefficient 22 7 100 800 A 64 63 C Start manual tuning 0 no 1 yes 0 0 1 D 39 38 C Tuning method 50 0 255 79 206 0 100 automatic selection 101 141 manual selection 142 254 not accepted 255 PID parameters identified model C Network settings 2 0 2 bit s 74 201 CO 0 4800 1 9600 2 19200 A Power supply mode 0 0 D 47 46 0 24 Vac 1 24 Vdc ALARM CONFIGURATION C Low superheat alarm timeout LowSH 300 0 8000 S 43 70 0 alarm DISABLED C Low evap temp alarm timeout LOP 300 0 8000 S 41 68 0 alarm DISABLED C High evap temp alarm timeout MOP 600 0 8000 s 42 169 0 alarm DISABLED C High cond temp alarm timeout High Tcond 600 0 8000 s 44 171 0 alarm DISABLED C_ Low suction temperature alarm threshold 50 60 76 200 392 C F A 26 25 C Low suct temp alarm timeout 300 0 8000 S g 36 0 alarm DISABLED VALVE C EEV minimum steps 50 0 9999 step 30 157 C_ EEV maximum steps 480 0 9999 step 31 58 C EEV closing steps 500 0 9999 step 36 163 C_ EEV nominal step rate 50 1 2000 step s 32 159 C_ EEV nominal current 450 0 800 mA 33 160 C_ EEV holding current 100 0 250 mA 35 162 C_ EEV duty cycle 30 1 100 34 161 C_ EEV opening synchroniz
20. CAREL o a 5 Parameter description Def Min Max UOM 3 m F Notes 5 A_ Hot gas bypass pressure set point 3 20 290 200 2900 barg psig A 62 61 A_ EPR pressure set point 3 5 20 290 200 2900 barg psig A 29 28 C_ PID proportional gain 15 0 800 A 48 47 C PID integral time 150 0 1000 S 38 165 C_ PID derivative time 5 0 800 s A 49 48 A LowSH protection threshold 5 40 72 superheat set K F A 56 55 point C_ LowSH protection integral time 15 0 800 S A 55 54 A LOP protection threshold 50 60 76 MOP protec C F A 52 51 tion threshold C_ LOP protection integral time 0 0 800 s A 51 50 A OP protection threshold 50 LOP protec 200 392 CF A 54 53 tion threshold E OP protection integral time 20 0 800 s A 53 52 A_ Enable manual valve position 0 0 i D 24 23 A anual valve position 0 0 9999 step I 39 166 C Discharge superheat setpoint 35 40 72 180 324 K F A 100 99 C_ Discharge temperature setpoint 105 60 76 200 392 C F A 101 100 ADVANCED A_ High Tcond threshold 80 60 76 200 392 C PF A 58 57 C High Tcond integral time 20 0 800 s A_ 57 56 A odul thermost setpoint 0 60 76 200 392 C CF
21. L Liquid receiver EV_ Electronic valve F__ Dewatering filter E _ Evaporator T__ Temperature probe Parameter Description Def _ Min Max UOM ADVANCED Superheat setpoint 11 LowSH 180 324 K F threshold PID proportional gain 15 0 800 PID integral time 150 0 1000 s PID derivative time 5 0 800 s Tab 5 1 5 7 Advanced regulation EPR back pressure This type of control can be used in many applications in which a constant pressure is required in the refrigerant circuit For example a refrigeration system may include different showcases that operate at different temperatures showcases for frozen foods meat or dairy The different temperatures of the circuits are achieved using pressure regulators installed in series with each circuit The special EPR function Evaporator Pressure Regulator is used to set a pressure set point and the PID control parameters required to achieve this V1 Solenoid valve E Evaporator Electronic valve V2 Thermostatic expasnion valve EV EVD evolution 0300005EN rel 3 0 18 06 2010 22 CAREL For the wiring see paragraph 2 11 General connection diagram This involves PID control without any protectors LowSH LOP MOP High Tcond see the chapter on Protectors without any valve unblock procedure and without auxiliary control Control is performed on the pressure probe value read by input S1 compared to the set point EPR pre
22. closed further The operating range of the superheat temperature is limited at the lower end if the flow rate through the valve is excessive the superheat measured will be near 0 K This indicates the presence of liquid even if the percentage of this relative to the gas cannot be quantified There is therefore un undetermined risk to the compressor that must be avoided Moreover a high superheat temperature as mentioned corresponds to an insufficient flow rate of refrigerant The superheat temperature must therefore always be greater than 0 K and have a minimum stable value allowed by the valve unit system A low superheat temperature in fact corresponds to a situation of probable instability due to the turbulent evaporation process approaching the measurement point of the probes The expansion valve must therefore be controlled with extreme precision and a reaction capacity around the superheat set point which will almost always vary from 3 to 14 K Set point values outside of this range are quite infrequent and relate to special applications CAREL Key Parameter description Def Min Max UOM CP_ compressor EEV electronic expansion valve CONTROL C condenser V solenoid valve LowSH protection threshold 5 40 72 superh KCF L liquid receiver E evaporator set point F _ dewatering filter P__ pressure probe transducer LowSH protection integration 15 0 800 S
23. connection 40 8 3 Variables used based on the type Of CONtr0l 4 9 ALARMS 42 Ol Ala S ER 42 9 2 Alarm relay Configuration ccssssssssssseesusssesssssessssssssusnssssssseeseneesee 43 93 Probealams a iaia 43 GA Controla S anunn a 44 9 5 MEEWMOtONAl A Mimarsinan Ra 44 96 LAN erfor Alari 45 10 TROUBLESHOOTING 46 11 TECHNICAL SPECIFICATIONS 48 12 APPENDIX VPM VISUAL PARAMETER MANAGER 49 2 i Installatiot aaa 49 122 Programming VPM tsansang 49 12 3 COPYING AME SOEUPD cir 50 12 4 Setting the default parameters ssssssssssssssssssesssseessssssessesseaseesee 50 12 5 Updating the driver and display firmware scsssscssssesesceseseesesee 50 EVD evolution 0300005EN rel 3 0 18 06 2010 CAREL 1 INTRODUCTION EVD evolution is a driver for double pole stepper motors designed 1 1 Models to control the electronic expansion valve in refrigerant circuits It is designed for DIN rail assembly and is fitted with plug in screw terminals Code Description It controls refrigerant superheat and optimises the efficiency of the EVD0000E00 EVD evolution universal tLAN a ere f EVDOOOOEO EVD evolution universal tLAN multiple pack of 10 pcs refrigerant circuit guaranteeing maximum flexibility being compatible f i ne 5 EVD0000E10 _ EVD evolution
24. defined by the compressor manufacturer 21 A Inviluppo Envelope Temperatura di condensazione C Condensing temperature C Temperatura di evaporazione C Evaporation temperature C Fig 5 d The pCO controller defines the current set point according to the point of operation within the envelope superheat setpoint discharge superheat setpoint e discharge temperature setpoint Parameter Description Def Min Max UOM ADVANCED Superheat setpoint 11 LowSH 180 324 K F threshold Discharge superheat setpoint 35 40 72 180 324 K F Discharge temperature setpoint 105 60 76 200 392 C F Tab 5 j Note this control function is only available CAREL valve drivers no set point needs to be configured by the user 5 6 Superheat regulation with 2 temperature probes The functional diagram is shown below This type of control must be used with care due to the lower precision of the temperature probe compared to the probe that measures the saturated evaporation pressure Parameter Description Def CONFIGURATION Main control multiplexed showcase cold sei room superheat regulation with 2 temperature probes Tab 5 k EVD evolution 0300005EN rel 3 0 18 06 2010 evolution Key CP_ Compressor V__ Solenoid valve C Condenser S Liquid gauge
25. driver will detect the modification and indicate the type of valve as Customised Parameter description Def CONFIGURATION Valve CAREL 1 CAREL PV EV 2 Alco EX4 3 Alco EX5 4 Alco EX6 5 Alco EX7 6 Alco EX8 330Hz suggested by CAREL 7 Alco EX8 500Hz specified by Alco 8 Sporlan SEI 0 5 1 1 9 Sporlan SER 1 5 20 10 Sporlan SEI 30 11 Sporlan SEI 50 12 Sporlan SEH 100 13 Sporlan SEH 175 14 Danfoss ETS 12 5 25B 15 Danfoss ETS 50B 16 Danfoss ETS 100B 17 Danfoss ETS 250 18 Danfoss ETS 400 19 two CAREL PV connected together 20 Sporlan Ser I G J K A Important e two CAREL E V valves connected together must be selected if two CAREL E V valves are connected to the same terminal to have parallel or complementary operation as described control is only possible with CAREL E V valves e not all CAREL valves can be connected see paragraph 2 5 Tab 4 f Pressure probe S1 Setting the type of pressure probe S1 defines the range of measurement and the alarm limits based on the manufacturer s data for each model usually indicated on the rating plate on the probe EVD evolution 0300005EN rel 3 0 18 06 2010 CAREL Parameter description Def CONFIGURATION Sensor S1 Ratiom Ratiometric OUT 0 to 5V Electronic OUT 4 to 20mA 1 to 93 1 1 to 4 2 barg 2 04 to 9 3 barg 3 1 to 9 3 barg 4 0 to 17 3 barg 5 0 85 to 34 2 barg 6 0 to 34 5 barg 7 0 to
26. electronic valve if installed electrical damage to the solenoid valve upstream of the electronic valve blockage of the filter upstream of the electronic valve if installed e electrical problems with the electronic valve motor e electrical problems in the driver valve connection cables incorrect driver valve electrical connection electronic problems with the valve control driver secondary fluid evaporator fan pump malfunction e insufficient refrigerant in the refrigerant circuit refrigerant leaks lack of subcooling in the condenser e electrical mechanical problems with the compressor processing residues or moisture in the refrigerant circuit Note the valve unblock procedure is nonetheless performed in each of these cases given that it does not cause mechanical or control problems Therefore also check these possible causes before replacing the valve 31 EVD evolution 0300005EN rel 3 0 18 06 2010 These are additional functions that are activated in specific situations that are potentially dangerous for the unit being controlled They feature an integral action that is the action increases gradually when moving away from the activation threshold They may add to or overlap disabling normal PID superheat control By separating the management of these functions from PID control the parameters can be set separately allowing for example normal control
27. expander for pCO only for controls for CAREL valves 35 EVD evolution 0300005EN rel 3 0 18 06 2010 CAREL 1 Valve opening 2 Valve position 3 Current cool capacity 4 Control set point 5 Superheat 6 Suction temperature 7 Evaporation temperature 8 Evaporation pressure 9 Condensing temperature 0 Condensing pressure 1 Modulating thermostat temperature 2 EPR pressure 3 Hot gas bypass pressure 4 Hot gas bypass temperature 5 CO gas cooler outlet temperature 6 CO gas cooler outlet pressure 7 CO gas cooler pressure set point 8 S1 probe measurement 9 S2 probe measurement 20 S3 probe measurement 21 S4 probe measurement 22 4 20 mA input value 23 0 10 V input value o Ila 3 i Parameter description Def Min Max UOM 3 m F Notes A Probe S2 CARELNTC lt 17 144 1 CAREL NTC 2 CAREL NTC HT high 3 combined NTC SPKP TO 4 0 to 10V external signal A Auxiliary control Disabled 18 145 1 Disabled 2 high condensing temperature protection on S3 probe 3 modulating thermostat on S4 probe 4 backup probes on 3 and S4 A Probe S3 Ratiometric 19 146 Ratiometric OUT 0 to 5 V Electronic OUT 4 to 20 mA 1 to 9 3 barg 1 1 4 2 barg 8 0 5 7 barg 2 0 4 9 3 barg 9 0 10 barg 3 1 9 3 barg 0 0 18 2 bar 4 0 17 3 barg 1 0 25 barg 5 0 85 34 2 barg 2
28. necessary in Service or Manufacturer programming mode the superheat set point otherwise keep the value recommended by CAREL based on the application and the protection thresholds LOP MOP etc See the chapter on Protectors 4 4 Other functions By entering Service programming mode other types of main control can be selected transcritical CO hot gas bypass etc as well as so called advanced control functions which do not involve the superheat activating auxiliary controls that use probes 53 and or S4 and setting the suitable values for the control set point and the LowSH LOP and MOP protection thresholds see the chapter on Protectors which depend on the specific characteristics of the unit controlled By entering Manufacturer programming mode finally the operation of the driver can be completely customised setting the function of each parameter If the parameters corresponding to PID control are modified the driver will detect the modification and indicate the main control as Customised 17 EVD evolution 0300005EN rel 3 0 18 06 2010 5 1 Main and auxiliary control EVD evolution features two types of control e main e auxiliary Main control is always active while auxiliary control can be activated by parameter Main control defines the operating mode of the driver The first 10 settings refer to superheat control the others are so called special settings and ar
29. only the function set for input 1 is performed e if the digital inputs 1 and 2 are set to perform a SEC function only the SEC function set for input 1 is performed the driver will be set to Regulation backup with the value of the digital input determined by the Regulation backup from supervisor variable Relay output The relay output can be configured as alarm relay output See the chapter on Alarms solenoid valve control e electronic expansion valve status signal relay The relay contact is only open if the valve is closed opening 0 As soon as control starts opening gt 0 with hysteresis the relay contact is closed Parameter description Def CONFIGURATION Relay configuration Alarm 1 Disabled 2 alarm relay opened in case of alarm 3 Sole relay noid valve relay open in standby 4 valve alarm relay open in standby and control alarms 5 Reversed alarm relay closed in case of alarm 6 Valve status relay open if valve is closed Tab 6 i 6 4 Control status The electronic valve driver has 6 different types of control status each of which may correspond to a specific phase in the operation of the refrigeration unit and a certain status of the driver valve system The status may be as follows forced closing initialisation of the valve position when switching the instrument on e standby no temperature control unit OFF e wait opening of the valve before sta
30. points fit the display board as shown the display will come on and if the driver is being commissioned the guided configuration procedure will start o press Fig 3 b A Important the driver is not activated if the configuration procedure has not been completed The front panel now holds the display and the keypad made up of 6 buttons that pressed alone or in combination are used to perform all the configuration and programming operations on the driver 3 2 Display and keypad The graphic display shows 2 system variables the control status of the driver the activation of the protectors any alarms and the status of the relay output ae T oe E St Apertura Q vali ee Key 1st variable displayed 2nd variable displayed relay status alarm press HELP protector activated control status adaptive control in progress NATI WIN Display writings Control status Protection active ON Operation LowSH Low superheat OFF Standby LOP Low evaporation tempe rature POS Positioning MOP High evaporation tempe rature WAIT Wait High High condensing tempe Tcond rature CLOSE Closing INIT Valve motor error reco gnition procedure TUN Tuning in progress Tab 3 b The valve motor error recognition procedure can be disabled See paragraph 9 5 Keypad Button Function Prg opens the
31. range parameter alarm manag and S3 alarm MIN amp MAX pressure parameters Probe S4 Probe S4 faulty red alarm ALARM flashing Depends on automatic Depends on pa Check the probe connections Check or exceeded set LED configuration rameter S4 probe the 54 probe alarm manag and alarm range parameter alarm manag S4 alarm MIN amp MAX temperature parameters LowSH low LowSH protection ALARM amp LowSH Depends on automatic Protection action Check the LowSH alarm threshold superheat activated ashing configuration already active and timeout parameters parameter LOP low evapo LOP protection ALARM amp LOP Depends on automatic Protection action Check the LOP alarm threshold and ration tempera activated ashing configuration already active timeout parameters ure parameter MOP high MOP protection ALARM amp MOP Depends on automatic Protection action Checkthe MOP alarm threshold and evaporation activated ashing configuration already active timeout parameters emperature parameter High Tcond high High Tcond pro ALARM amp MOP Depends on automatic Protection action Check the Hitcond alarm threshold conden tempe tection activated ashing configuration already active and timeout parameters rature parameter Low suction Threshold and ALARM flashing Depends on automatic o effect Check the threshold and timeout emperature timeout exceeded configuration parameters parameter
32. readings of the control variables so as to calculate and validate the PID parameters These procedures are repeated to fine tune superheat control as much as possible over a maximum of 12 hours Note during the optimisation phase maintenance of the superheat set point is not guaranteed however the safety of the unit is ensured through activation of the protectors If these are activated the procedure is interrupted if all the attempts performed over 12 hours are unsuccessful the adaptive control ineffective alarm will be signalled and adaptive control will be disabled resetting the default values of the PID and protection function parameters to deactivate the adaptive control ineffective alarm set the value of the main control parameter to one of the first 10 options If required adaptive control can be immediately re enabled using the same parameter If the procedure ends successfully the resulting control parameters will be automatically saved Autotuning EVD evolution also features an automatic tuning function Autotuning for the superheat and protector control parameters which can be started by setting the parameter Force manual tuning 1 Parameter Description Def Min Max UoM ADVANCED Force manual tuning 0 no 1 yes_ 0 0 1 i Tab 5 f The activation status of the procedure is indicated on the standard display by the message TUN at the top right Apertu
33. realign the position of the valve If this is not possible the automatic procedure for synchronising the position may he correct regulation will not be guaran p solve the problem nonetheless eed until the next synchronisation CAREL 9 6 LANerroralarm If the connection to the LAN network is offline for more than 6s due to an electrical problem the incorrect configuration of the network addresses or the malfunction of the pCO controller a LAN error alarm will be signalled The LAN error affects the control of the driver as follows case 1 unit in standby digital input DI1 DI2 disconnected the driver will remain permanently in standby and control will not be able to start case 2 unit in control digital input DI1 DI2 disconnected the driver will stop control and will go permanently into standby e case 3 unit in standby digital input DI1 DI2 connected the driver wil remain in standby however control will be able to start if the digita input is closed In this case it will start with current cooling capacity 100 e case 4 unit in control digital input DI1 DI2 connected the driver wil remain in control status maintaining the value of the current cooling capacity If the digital input opens the driver will go to standby and control will be able to start again when the input closes In this case i will start with current cooling capacity 100 45 EVD evolution 030
34. recommended by CAREL to control the different units based on the values available for the Main control parameter 2 use any parameters tested and calibrated manually based on laboratory or field experiences with the unit in question 3 enable automatic adaptive control 4 activate one or more manual autotuning procedures with the unit in stable operating conditions if adaptive control generates the Adaptive control ineffective alarm Adaptive control After having completed the commissioning procedure to activate adaptive control set the parameter Main control air conditioner chiller or showcase cold room with adaptive control Parameter description Def CONFIGURATION Main control multiplexed cabinet cold room air conditioner chiller or cabinet cold room with adaptive control Tab 5 e The activation status of the tuning procedure will be shown on the standard display by the letter T EVD evolution 0300005EN rel 3 0 18 06 2010 Apertura valvola With adaptive control enabled the controller constantly evaluates whether control is sufficiently stable and reactive otherwise the procedure for optimising the PID parameters is activated The activation status of the optimisation function is indicated on the standard display by the message TUN at the top right The PID parameter optimisation phase involves several operations on the valve and
35. screen for entering the password to access program ming mode IA if in alarm status displays the alarm queue in the Manufacturer level when scrolling the parameters shows the explanation screens Help Esc e exits the Programming Service Manufacturer and Display modes e after setting a parameter exits without saving the changes 4 4 navigates the display screens e increases decreases the value UP DOWN v switches from the display to parameter programming mode Enter confirms the value and returns to the list of parameters Tab 3 c Note the variables displayed as standard can be selected by configuring the parameters Display main var 1 and Display main var 2 accordingly See the list of parameters EVD evolution 0300005EN rel 3 0 18 06 2010 3 3 Display mode display Display mode is used to display the useful variables showing the operation of the system The variables displayed depend on the type of control selected 1 press Esc one or more times to switch to the standard display 2 press UP DOWN the display shows a graph of the superheat the percentage of valve opening the evaporation pressure and temperature and the suction temperature variables 3 pressUP DOWN the variables are shown onthedisplay followed bythe screens with the probe and valve motor electrical connections 4 press Esc to exit display mode For the complete lis
36. that is less reactive yet much faster in responding when exceeding the activation limits ofone ofthe protectors 7 1 Protectors The protectors are 4 e LowSH low superheat LOP low evaporation temperature MOP high evaporation temperature e High Tcond high condensing temperature Note The HITCond protection requires an additional probe 53 to those normally used either installed on the driver or connected via tLAN or pLAN to a controller The protectors have the following main features e activation threshold depending on the operating conditions of the controlled unit this is set in Service programming mode e integration time which determines the intensity if set to 0 the protector is disabled set automatically based on the type of main control e alarm with activation threshold the same as the protector and timeout if set to 0 disables the alarm signal Note The alarm signal is independent from the effectiveness of the protector and only signals that the corresponding threshold has been exceeded If a protector is disabled null integration time the relative alarm signal is also disabled Each protector is affected by the proportional gain parameter K for the PID superheat control The higher the value of K the more intense the reaction of the protector will be Characteristics of the protectors Protection Reaction Reset LowSH Intense closing Immediate LOP In
37. user Fig 12 a Then the user can choose to 4 directlyaccesstothelistof parameters fortheEVDevolutionsavedto EEPROM select tLAN This is done in real time ONLINE mode at the top right set the network address 198 and choose the guided recognition procedure for the USB communication port Enter at the Service or Manufacturer level Fig 12 b 49 om gr k 148 148 100 Don t ask for password in the fi Accessible paran Fig 12 c 5 selectthemodelfromtherangeandcreateanewprojectorchoosean existing project select Device model A new project can be created making the changes and then connecting later on to transfer the configuration OFFLINE mode Enter at the Service or Manufacturer level select Device model and enter the corresponding code E Seleziona origine Lista Parametri Chiave E2PROM Rs485 connettore posteriore tLAN connettore frontale Modello dispositivo Cerca per famiglia 1 Famigla MPX Pro Fig 12 d go to Configure device the list of parameters will be displayed allowing the changes relating to the application to be made Fig 12 e At the end of the configuration to save the project choose the following command used to save the configuration as a file with the hex extension File gt Save parameter list To transfer the parameters to the driver choose the Write command During the write procedure
38. valve opening must be increased Wait When the calculated position has been reached regardless of the time taken this varies according to the type of valve and the objective position there is a constant 5 second delay before the actual control phase starts This is to create a reasonable interval between standby in which the variables have no meaning as there is no flow of refrigerant and the effective control phase Control The control request can be received by the closing of digital input 1 or via the network pLAN The solenoid or the compressor are activated when the valve following the pre positioning procedure has reached the calculated position The following figure represents the sequence of events for starting control of the refrigeration unit Control delay after defrost Some types of refrigerating cabinets have problems controlling the electronic valve in the operating phase after defrost In this period 10 to 20 min after defrosting the superheat measurement may be altered by the high temperature of the copper pipes and the air causing excessive opening of the electronic valve for extended periods in which there is return of liquid to the compressors that is not detected by the probes connected to the driver In addition the accumulation of refrigerant in the evaporator in this phase is difficult to dissipate in a short time even after the probes have started to correctly measure the presence of liquid superheat
39. 0005EN rel 3 0 18 06 2010 CAREL 10 TROUBLESHOOTING The following table lists a series of possible malfunctions that may occur when starting and operating the driver and the electronic valve These cover the most common problems and are provided with the aim of offering an initial response for resolving the problem PROBLEM CAUSE SOLUTION The superheat value measu red is incorrect he probe does not measure correct values Check that the pressure and the temperature measured are correct and that the probe position is correct Check that the minimum and maximum pressure parameters for the pressure transducer set on the driver correspond to the range of the pressure probe installed Check the correct probe electrical connections The type of refrigerant set is incorrect Check and correct the type of refrigerant parameter Liquid returns to the com pressor during control The type of valve set is incorrect Check and correct the type of valve parameter The valve is connected incorrectly rotates in reverse and is open Check the movement of the valve by placing it in manual control and closing or ope ning it completely One complete opening must bring a decrease in the superheat and vice versa lf the movement is reversed check the electrical connections The superheat set point is too low Increase the superheat set point Initially set it to 12 C and check that there is no longer
40. 1 0 1 7 D 20 19 C_ EEV closing synchroniz 1 0 1 z D 21 20 Tab 8 a User A Service installer C Manufacturer Type of variable A analogue D digital I integer EVD evolution 0300005EN rel 3 0 18 06 2010 38 CAREL 8 1 Unitof measure In the configuration parameters menu with access by manufacturer password the user can choose the unit of measure for the driver e international system C K barg e imperial system F psig A Important the drivers EVD evolution pLAN code EVD000E1 and EVD0000F4 connected in pLAN to a pCO controller do not manage the change of the unit of measure O Note the unit of measure K relate to degrees Kelvin adopted for measuring the superheat and the related parameters When changing the unit of measure all the values of the parameters saved on the driver and all the measurements read by the probes will be recalculated This means that when changing the units of measure control remains unaltered Example 1 The pressure read is 100 barg this will be immediately converted to the corresponding value of 1450 psig Example 2 The superheat set point parameter set to 10 K will be immediately converted to the corresponding value of 18 F Example 3 The 54 alarm MAX temp parameter set to 150 C will be immediately converted to the corresponding value of 302 F Note due to limits in the internal arithmetic of the driver pressure
41. C S82 calibration offset 0 20 36 20 20 36 20 C F volt A 41 40 C S2 alarm MIN temperat 50 60 S2 alarm MAX C F A 46 45 temp C S2 alarm MAX temperat 105 S2 alarm MIN 200 392 C F A 44 43 temp C S3 calibrat offset 0 60 870 60 870 barg psig A 35 34 C S3 calibration gain on 4 to 20 mA cannot be selected 1 20 20 A 83 81 C S3 pressure MINIMUM value 1 20 290 S3 pressure barg psig A 33 32 MAXIMUM value C S3 pressure MAXIMUM value 93 S3 pressure 200 2900 barg psig A 31 30 MINIMUM value C S3 alarm MIN pressure 1 20 290 S3 alarm MAX barg psig A 40 39 pressure C S3 probe alarm MAX pressure 93 S3 alarm MIN 200 2900 barg psig A 38 37 pressure C S4 calibrat offset 0 20 36 20 36 C F A 42 41 C S4 alarm MIN temperat 50 60 76 S4 alarm MAX C F A 47 46 temp C S4 alarm MAX temperat 105 S4 alarm MIN 200 392 C F A 45 44 temp CONTROL A Superheat set point 11 LowSH thre 180 324 K R A 50 49 shold A_ Valve opening at start up 50 0 100 I 37 164 C Valve opened in standby 0 0 1 D 231 22 0 disabled valve closed 1 enabled valve open 25 C_ start up delay after defrost 10 0 60 min I 40 167 A_ Pre position time 6 0 18000 s 90 217 A_ Hot gas bypass temperature set point 10 60 76 200 392 C F A 28 27 37 EVD evolution 0300005EN rel 3 0 18 06 2010
42. CED Tuning method 0 0 255 Tab 5 g Note the Tuning method parameter is for use by qualified CAREL technical personnel only and must not be modified 5 4 ControlwithEmersonClimateDigitalScroll compressor A Important this type of control is incompatible with adaptive control and autotuning Digital Scroll compressors allow wide modulation of cooling capacity by using a solenoid valve to active a patented refrigerant bypass mechanism This operation nonetheless causes swings in the pressure of the unit which may be amplified by normal control of the expansion valve leading to malfunctions Dedicated control ensures greater stability and efficiency of the entire unit by controlling the valve and limiting swings based on the instant compressor modulation status To be able to use this mode the pLAN version driver must be connected to a Carel pCO series controller running a special application to manage units with Digital scroll compressors Parameter Description Def CONFIGURATION Main control multiplexed cabinet cold da room air conditioner chiller with Digital Scroll compressor Tab 5 h CAREL Key CP_ Compressor V__ Solenoid valve C__ Condenser V2_ Thermostatic expansion valve L Liquid receiver EV_ Electronic valve F__ Dewatering filter E _ Evaporator S__ Liquid gauge P__ Pressure probe For information on the wiring see paragraph 2 11 General connection
43. Check the pLAN tLAN connections Check that the pCO application connected to the driver where featured correctly manages the driver start signal Check that the driver is NOT in stand alone mode The driver in stand alone configuration does not start control and the valve remains closed Check the connection of the digital input Check that when the control signal is sent that the input is closed correctly Check that the driver is in stand alone mode LOP protection disabled Set a LOP integration time greater than 0 s LOP protection ineffective Make sure that the LOP protection threshold is at the required saturated evaporation temperature between the rated evaporation temperature of the unit and the corre sponding temperature at the calibration of the low pressure switch and decrease the value of the LOP integration time Solenoid blocked Check that the solenoid opens correctly check the electrical connections and the operation of the relay Insufficient refrigerant Check that there are no bubbles in the sight glass upstream of the expansion valve Check that the subcooling is suitable greater than 5 C otherwise charge the circuit The valve is connected incorrectly rotates in reverse and is open Check the movement of the valve by placing it in manual control and closing or ope ning it completely One complete opening must bring a decrease in the superheat and vice versa If the movement is reversed
44. EPROM probe and communication e control low superheat LOP MOP high condensing temperature low suction temperature The activation of the alarms depends on the setting of the threshold and activation delay timeout parameters Setting the timeout to 0 disables the alarms The EEPROM unit parameters and operating parameters alarm always stops control All the alarms are reset automatically once the causes are no longer present The alarm relay contact will open if the relay is configured as alarm relay using the corresponding parameter The signalling of the alarm event on the driver depends on whether the LED board or the display board is fitted as shown in the table below Note the alarm LED only comes on for the system alarms and not for the control alarms Example display system alarm on LED board NET Lege ep EVD evolution 0 OPEN Table of alarms CAREL 9 ALARMS Note the alarm LED comes on to signal a mains power failure only if the EVBAT module accessory has been connected guaranteeing the power required to close the valve The display shows both types of alarms in two different modes e system alarm on the main page the ALARM message is displayed flashing Pressing the Help button displays the description of the alarm and at the top right the total number of active alarms Eeprom i danneggiata N prg a bh Surriscaldam 4 9 E Apertura valvo
45. EVD evolution CAR L electronic expansion valve driver Eve User manual LEGGI E CONSERVA gt QUESTE ISTRUZIONI lt READ AND SAVE THESE INSTRUCTIONS om NO POWER I amp SIGNAL aw CABLES V TOGETHER READ CAREFULLY IN THE TEXT Integrated Control Solutions amp Energy Savings CAREL WARNINGS CAREL bases the development of its products on decades of experience in HVAC on the continuous investments in technological innovations to products procedures and strict quality processes with in circuit and functional testing on 100 of its products and on the most innovative production technology available on the market CAREL and its subsidiaries nonetheless cannot guarantee that all the aspects of the product and the software included with the product respond to the requirements of the fina application despite the product being developed according to start of the art techniques The customer manufacturer developer or installer of the fina equipment accepts all liability and risk relating to the configuration of the product in order to reach the expected results in relation to the specific fina installation and or equipment CAREL may based on specific agreements acts as a consultant for the positive commissioning of the final unit application however in no case does it accept liability for the correct operation of the fina equipment system The CAREL product is a state of the art product whose operation
46. EVD evolution universal RS485 Modbus opto isolated Tab 1 a an electronic expansion valve in a refrigerant circuit with SIAM ANB scroll compressor In this case the compressor must be controlled by the CAREL Power speed drive with inverter this in turn connected to the pCO controller The EVD evolution driver can control an electronic expansion valve in a refrigerant circuit with Digital Scroll compressor if integrated with a specific CAREL controller via LAN In addition it features adaptive control that can evaluate the effectiveness of superheat control and if necessary activate one or more tuning procedures Together with superheat control it can manage an auxiliary control function selected between 1 2 Functions and main characteristics condensing temperature protection and modulating thermostat As regards network connectivity the driver can be connected to either of the following a pCO programmable controller to manage the controller via pLAN tLAN and RS485 Modbus e a PlantVisorPRO supervisor via RS485 Modbus In this case On Off control is performed via digital input 1 or 2 if suitably configured As well as regulation start stop digital inputs 1 and 2 can be configured for the following valve regulation optimization after defrost discharged battery alarm management valve forced open at 100 regulation backup regulation security The second digital input is available for optimised
47. ND_TH T_COND_TH A ON HiTcond OFF ON PID OFF ALARM OFF Key T_COND Condensing temperature T_COND_ High Tcond TH threshold High High Tcond protection status ALARM Alarm Tcond PID PID superheat control t Time D Alarm timeout Note e the High Tcond threshold must be greater than the rated condensing temperature of the unit and lower then the calibration of the high pressure switch e the closing of the valve will be limited if this causes an excessive decrease in the evaporation temperature EVD evolution 0300005EN rel 3 0 18 06 2010 34 CAREL CAREL 8 PARAMETERS TABLE 2 1 G 3 i Parameter description Def Min Max UOM 2 n 3 Notes 3 7135 8 CONFIGURATION A_ Network address 198 1 207 T188 A Refrigerant R404A 13 140 R22 2 R134a 3 R404A 4 R407C 5 R410A 6 R507A 7 R290 8 R600 9 R600a 10 R717 11 R744 12 R728 3 R1270 14 R417A 15 R422D 16 R413A 7 R422A 18 R423A 19 R407A 20 R427A A Valve CAREL E V 14 141 CAREL EV 2 Alco EX4 3 Alco EX5 4 Alco EX6 5 Alco EX7 6 Alco EX8 330Hz consigliata CAREL 7 Alco EX8 500Hz specifica Alco 8 Sporlan SEI 0 5 11 9 Sporlan SER 1 5 20 0 Sporlan SEI 30 1 Sporlan SEI 50 2 Sporlan SEH 100 3 Sporlan SEH 175 4 Danfoss ETS 12 5 25B 5 Danfoss ETS 50B 6 Danfoss ETS 100B 7 Danfoss ETS 250 8 Danfoss ETS 400 9 Two CAREL E V
48. P reshold OP protection integration time 20 0 800 S ADVANCED High Tcond threshold 80 60 76 200 392 C CF High Tcond integration time 20 0 800 s ALARM CONFIGURATION Low superheat alarm timeout 300 0 8000 S LowSH 0 alarm DISABLED Low evaporation temperature alarm 300 0 8000 S imeout LOP 0 alarm DISABLED High evaporation temperature alarm 600 0 8000 s imeout MOP 0 alarm DISABLED High condensing temperature alarm 600 O 8000 S imeout High Tcond 0 alarm DISABLED Low suction temperature alarm 50 60 76 200 392 C F hreshold Low suction temperature alarm 300 JO 18000 S imeout Tab 9 e 9 5 EEV motor alarm At the end of the commissioning procedure and whenever the driver is powered up the valve motor error recognition procedure is activated This preceded the forced closing procedure and lasts around 10 s The valve is kept stationary to allow any valve motor faults or missing or incorrect connections to be detected In any of these cases the corresponding alarm is activated with automatic reset The driver will go into wait status as it can longer control the valve The procedure can be avoided by keeping the respective digital input closed for each driver In this case after having powered up the driver forced closing of the valve is performed immediately Important after having reso it is recommended to switch the dri ved the problem with the motor ver off and on again to
49. R 0 10 V input value 0 0 0 A 20 9 R Control set point 0 60 870 200 2900 A 21 20 R Driver firmware version 0 0 0 A 25 24 R OP MOP protection suction temperature threshold S2 30 60 76 200 392 A 02 01 R W High evaporation temperature threshold 50 LOP threshold 200 392 A 07 06 R W Valve position 0 0 9999 4 31 R Current cooling capacity 0 0 00 7 34 RAW Extended measured probe S1 0 2000 2901 20000 29007 83 210 R Extended measured probe S3 0 2000 2901 20000 29007 84 211 R Valve emergency closing speed 150 1 2000 86 213 R W Control mode SIAM comp 1 1 3 89 216 R W Low suction temperature 0 0 D 1 0 R LAN error 0 0 D 2 1 R un EEPROM damaged 0 0 D 3 2 R Probe S1 0 0 D 4 3 R lt Probe 2 0 0 D 5 4 R lt Probe 53 0 0 D 6 5 R Probe S4 0 0 D 7 6 R EEV motor error 0 0 D 8 7 R Relay status 0 0 D 9 8 R u LOP low evaporation temperature 0 0 D 0 9 R lt MOP high evaporation temperature 0 0 D 1 10 R lt LowSH low superheat 0 0 D 2 11 R High Tcond high condensing temperature 0 0 D 3 12 R DI1 digital input status 0 0 D 4 13 R DI2 digital input status 0 0 D 5 14 R Enable EVD control 0 0 D 22 21 R W Adaptive control ineffective 0 0 D 40 39 R 2 Mains power failure 0 0 45 44 R Regulation backup from supervisor 0 0 D 46 45 R W Forced valve closing not completed 0 0 D 49 48 R W Tab 8 b The displayed variable is to be divided by 100 and allows us to appreciate the hundredth of a bar
50. able display e ratiometric or electronic 4 to 20 mA pressure transducer the latter can be shared between up to 5 drivers useful for multiplexed applications possibility to use S3 and S4 as backup probes in the event of faults on the main probes S1 and S2 4 to 20 mA or to 10 Vdc input to use the driver as a positioner controlled by an external signal management of power failures with valve closing only for drivers with 24 Vac power supply and connected to the EVBAT00400 EVBAT00500 accessory e advanced alarm management 7 EVD evolution 0300005EN rel 3 0 18 06 2010 For software versions higher than 4 0 the following new functions have been introduced e 24Vac or 24 Vdc power supply in the latter case without valve closing in the event of power failures pre position time settable by parameter use of digital to start stop control when there is no communication with the pCO programmable controller possibility to control the electronic expansion valve in a refrigerant circuit with SIAM ANB scroll compressor controlled by CAREL Power speed drive with inverter Series of accessories for EVD evolution Display code EVDISOO 0 Easily applicable and removable at any time from the front panel of the driver during normal operation displays all the significant system variables the status of the relay output and recognises the activation of the protection functions a
51. al input DI1 DI2 closes If due to error or for any other reason Enable EVD control should be set to 0 zero the driver will immediately stop control and will remain in standby until re enabled with the valve stopped in the ast position e SUPERVISOR to simplify the commissioning of a considerable number of drivers using the supervisor the setup operation on the display can be limited to simply setting the network address The display will then be able to be removed and the configuration procedure postponed toa ater stage using the supervisor or if necessary reconnecting the display To enable control of the driver via supervisor set Enable EVD control his is included in the safety parameters in the special parameters menu under the corresponding access level However the setup parameters should first be set in the related menu The driver will then be enabled for operation and control will be able to commence when requested by the pCO controller via pLAN or when digital input DI1 DI2 closes As highlighted on the supervisor inside of the yellow information field elating to the Enable EVD control parameter if due to error or for any other reason Enable EVD control should be set to 0 zero the driver will immediately stop control and will remain in standby until e enabled with the valve stopped in the last position pCO PROGRAMMABLE CONTROLLER the first operation to be performed if necessary is to set the net
52. an the 90 or condensing strong vibrations or knocks exposure to continuous water sprays exposure to aggressive and polluting atmospheres e g sulphur and ammonia fumes saline mist smoke to avoid corrosion and or oxidation e strong magnetic and or radio frequency interference avoid installing the appliances near transmitting antennae exposure of the driver to direct sunlight and to the elements in general A Important When connecting the driver the following warnings must be observed if the driver is used in a way not specified in this manual the level of protection is not guaranteed donot operate the controller for extended periods without connecting the valve e incorrect connection to the power supply may seriously damage the driver e use cable ends suitable for the corresponding terminals Loosen each screw and insert the cable ends then tighten the screws and lightly tug the cables to check correct tightness separate as much as possible at least 3 cm the probe and digital input cables from the power cables to the loads so as to avoid possible electromagnetic disturbance Never lay power cables and probe cables in the same conduits including those in the electrical panels e install the shielded valve motor cables in the probe conduits use shielded valve motor cables to avoid electromagnetic disturbance to the probe cables e avoid installing the probe cables in the immediate vicinity of powe
53. ble controller via LAN transferring the probe readings quickly and without filtering The driver operates as a simple actuator and receives the information needed to manage the valves from the pCO Parameter Description Def CONFIGURATION Main control multiplexed showcase cold mf room I O expander for pCO Tab 5 q EVD evolution pco PLAN a shield Fig 5 1 Key T_ _ Temperature probe P__ Pressure probe EV_ Electronic valve CAREL 5 8 Auxiliary control Auxiliary control can be activated at the same time as main control and uses the probes connected to inputs S3 and or S4 Parameter description Def CONFIGURATION Auxiliary control Disabled 1 Disabled 2 High condensing temperature protection on S3 probe 3 Modulating thermostat on S4 probe 4 Backup probes on 53 amp S4 Tab 5 r For the high condensing temperature protection only available with superheat control an additional pressure probe is connected to S3 that measures the condensing pressure For the modulating thermostat function only available with superheat control an additional temperature probe is connected to S4 that measures the temperature on used to perform temperature control see the corresponding paragraph The last option available if main control 1 to 18 requires the installation of both probes S3 amp S4 the first pressure and the second temperature No
54. cond 0 alarm DISABLED Tab 7 f EVD evolution 0300005EN rel 3 0 18 06 2010 The integration time is set automatically based on the type of main control O Note e the protector is very useful in units with compressors on board if the air cooled condenser is undersized or dirty malfunctioning in the more critical operating conditions high outside temperature Di the protector has no purpose in multiplexed systems showcases where the condensing pressure is maintained constant and the status of the individual electronic valves does not affect the pressure value To reduce the condensing temperature the output of the refrigeration unit needs to be decreased This can be done by controlled c the electronic valve implying superheat is no an increase in the superheat temperature The p a moderate reaction that tends to limit the incre onger contro temperature keeping it below the activation threshold whi to stop the superheat from increasing as muc operating conditions will not resume based on protector but rather on the reduction in the ou the activatio side tempera osing of led and otector will thus have ase in the condensing e trying h as possible Normal n of the ure The system will therefore remain in the best operating conditions a little below the threshold until the environmental conditions change T_COND T_CO
55. connected together 20 Sporlan SER I G J K 21 1 to 12 8 barg 22 0 to 20 7 barg 23 1 86 to 43 0 barg A Probe S1 Ratiometric 16 143 Ratiometric OUT 0 to 5 V Electronic OUT 4 to 20 mA 1 to 9 3 barg 1 1 4 2 barg 8 0 5 7 barg 2 0 4 9 3 barg 9 0 10 barg 3 1 9 3 barg 0 0 18 2 bar 4 0 17 3 barg 1 0 25 barg 5 0 85 34 2 barg 2 0 30 barg 6 0 34 5 barg 3 0 44 8 barg 7 0 45 barg 4 remote 0 5 7 barg 5 remote 0 10 barg 6 remote 0 18 2 barg 7 remote 0 25 barg 8 remote 0 30 barg 9 remote 0 44 8 barg 20 4 20 MA external signal A Main control Multiplexed z 7 15 142 1 Centralized cabinet cold room cabinet cold 2 Self contained cabinet cold room room 3 Perturbated cabinet control room 4 Subcritical CO cabinet cold room 5 R404A condenser for subcritical CO 6 AC or chiller with plate evaporator 7 AC or chiller with shell tube evaporator 8 AC or chiller with battery coil evaporator 9 AC or chiller with variable cooling capacity 0 AC or chiller perturbated unit 1 EPR Back pressure 2 Hot gas by pass by pressure 3 Hot gas by pass by temperature 4 transcritical CO gas cooler 5 analog positioner 4 to 20 mA 6 analog positioner 0 to10 V 7 AC chiller or cabinet cold room with adaptative regulation 8 AC or chiller with Digital Scroll compressor 9 AC chiller with SIAM ANB compressor 20 superheat regulation with 2 temperature probes 21 1 0
56. control 1 EPR back pressure 2 hot gas bypass by pressure 3 hot gas bypass by temperature 4 transcritical CO2 tgas cooler 5 analogue positioner 4 to 20 mA 6 analogue positioner 0 to 10 V 7 air conditioner chiller or cabinet cold room with adaptive control 8 air conditioner chiller with digital scroll compressor 9 AC chiller with SIAM ANB scroll compressor 20 superheat regulation with 2 temperature probes 21 I O expander for pCO Tab 4 h CAREL valve drivers only The superheat set point and all the parameters corresponding to PID control the operation of the protectors and the meaning and use of probes S1 and or S2 will be automatically set to the values recommended by CAREL based on the selected application During this initial configuration phase only superheat control mode from 1 to 10 can be set which differ based on the application chiller refrigerated cabinet etc n the event of errors in the initial configuration these parameters can ater be accessed and modified inside the service or manufacturer menu f the driver default parameters are restored RESET procedure see the chapter on Installation when next started the display will again show he guided commissioning procedure 4 3 Checks after commissioning After commissioning e check that the valve completes a full closing cycle to perform alignment set if
57. defrost management Another possibility involves operation as a simple positioner with 4 to 20 mA or 0 to 10 Vdc analogue input signal EVD evolution comes with a LED board to indicate the operating status or a graphic display accessory that can be used to perform installation following a guided commissioning procedure involving setting just 4 parameters refrigerant valve pressure probe type of main control chiller showcase etc The procedure can also be used to check that the probe and valve motor wiring is correct Once installation is complete the display can be removed as it is not necessary for the operation of the driver or alternatively kept in place to display the significant system variables any alarms and when necessary set the control parameters The driver can also be setup using a computer via the service serial port In this case the VPM program Visual Parameter anager needs to be installed downloadable from http ksa carel com and the USB tLAN converter EVDCNVOOEO connected Only on RS485 Modbus models can the installation procedure be managed as described above by computer using the serial port see paragraph 2 8 in place of the service serial port The universal models can drive all types of valves while the CAREL models only drive CAREL valves The codes with multiple packages are sold without connectors available separately in code EVDCON0021 In summary
58. e easily compared against the technical specifications supplied by the manufacturers of the compressors The protector is activated so as to prevent too high evaporation temperatures from causing an excessive workload for the compressor with consequent overheating of the motor and possible activation of the thermal protector The protector is very useful in self contained units if starting with a high refrigerant charge or when there are sudden variations in the load The protector is also useful in multiplexed systems showcases as allows all the utilities to be enabled at the same time without causing problems of high pressure for the compressors To reduce the evaporation temperature the output of the refrigeration unit needs to be decreased This can be done by controlled closing of the electronic valve implying superheat is no longer controlled and an increase in the superheat temperature The protector will thus have a moderate reaction that tends to limit the increase in the evaporation temperature keeping it below the activation threshold while trying to stop the superheat from increasing as much as possible Normal operating conditions will not resume based on the activation of the protector but rather on the reduction in the refrigerant charge that caused the increase in temperature The system will therefore remain in the best operating conditions a little below the threshold until the load conditions change
59. e pressure or temperature settings or depend on a control signal from an external controller The two last advanced functions also relate to superheat control Parameter description Def CONFIGURATION Main control multiplexed Superheat control cabinet 1 multiplexed cabinet cold room cold room 2 cabinet cold room with on board compressor 3 perturbed cabinet cold room 4 cabinet cold room with subcritical CO 5 R404A condenser for subcritical CO2 6 air conditioner chiller with plate heat exchanger 7 ait conditioner chiller with tube bundle heat exchanger 8 air conditioner chiller with finned coil heat exchanger 9 air conditioner chiller with variable cooling capacity 0 perturbed air conditioner chiller Advanced control 1 EPR back pressure 2 hot gas bypass by pressure 3 hot gas bypass by temperature 4 gas cooler CO transcritical 5 analogue positioner 4 to 20 mA 6 analogue positioner 0 to 10 V 7 air conditioner chiller or cabinet cold room with adapti ve control 8 air conditioner chiller with digital scroll compressor 9 AC chiller with SIAM ANB scroll compressor 20 superheat regulation with 2 temperature probes 21 I O expander for pCO Tab 5 a only for CAREL valve drivers O Note R404A condensers with subcritical CO refer to superheat control for valves installed in cascading systems
60. ecified in the manual do not attempt to open the device in any way other than described in the manual e donot drop hit or shake the device as the internal circuits and mechanisms may be irreparably damaged e do not use corrosive chemicals solvents or aggressive detergents to clean the device e do not use the product for applications other than those specified in the technical manual All of the above suggestions likewise apply to the controllers serial boards programming keys or any other accessory in the CAREL product portfolio CAREL adopts a policy of continual development Consequently CAREL reserves the right to make changes and improvements to any produc described in this document without prior warning The technical specifications shown in the manual may be changed withou prior warning The liability of CAREL in relation to its products is specified in the CAREL genera contract conditions available on the website www carelcom and or by specific agreements with customers specifically to the extent where allowed by applicable legislation in no case will CAREL its employees or subsidiaries be liable for any lost earnings or sales losses of data and information costs o replacement goods or services damage to things or people downtime or any direct indirect incidental actual punitive exemplary special or consequentia damage of any kind whatsoever whether contractual extra contractual or due to negligence
61. equest is received before starting control the valve is moved to a precise initial position IThe pre position time is the time the valve is held in a steady position based on the parameter Valve opening at start up Parameter description Def Min Max UOM CONTROL Pre position time 6 0 18000 s Valve opening at start up evaporator valve 50 0 100 capacity ratio Tab 6 l The valve opening parameter should be set based on the ratio between the rated cooling capacity of the evaporator and the valve e g rated evaporator cooling capacity 3kW rated valve cooling capacity 10kW valve opening 3 10 33 29 If the capacity request is 100 Opening Valve opening at start up If the capacity request is less than 100 capacity control Opening Valve opening at start up Current unit cooling capacity where the current unit cooling capacity is sent to the driver via pLAN by the pCO controller If the driver is stand alone this is always equal to 100 O Note this procedure is used to anticipate the movement and bring the valve significantly closer to the operating position in the phases immediately after the unit starts if there are problems with liquid return after the refrigeration unit starts or in units that frequently switch on off the valve opening at start up must be decreased If there are problems with low pressure after the refrigeration unit starts the
62. essure probe 0 to 5 V e resolution 0 1 FS measurement error 2 FS maximum 1 typical electronic pressure probe 4 to 20 mA e resolution 0 5 FS measurement error 8 FS maximum 7 typical electronic pressure probe 4 to 20 mA remote Maximum number of controllers connected 5 combined ratiometric pressure probe 0 to 5 V resolution 0 1 FS measurement error 2 FS maximum 1 typical S4 low temperature NTC 10kQ at 25 C 50T105 C measurement error 1 C in the range 50T50 C 3 C in the range 50T90 C high temperature NTC 50kQ at 25 C 40T150 C measurement error 1 5 C in the range 20T115 C 4 C in the range outside of 201115 C NTC built in 10kQ at 25 C 40T120 C measurement error_1 C in the range 40T50 C 3 C in the range 50T90 C Relay output normally open contact 5 A 250 Vac resistive load 2 A 250 Vac inductive load PF 0 4 Lmax 10 m Power to active probes V programmable output 5 Vdc 2 or 12 Vdc 10 RS485 serial connection Lmax 1000 m shielded cable LAN connection Lmax 30 m shielded cable pLAN connection Lmax 500 m shielded cable Assembly DIN rail Connectors plug in cable size 0 5 to 2 5 mm 12 to 20 AWG Dimensions LxHxW 70x110x60 Operating conditions 10T60 C lt 90 rH non condensing Storage condition
63. etely open the valve If the superheat remains high check the electrical connections and or replace the valve The cabinet does not reach the set temperature and the position of the valve is always 0 for multiplexed cabinets only The driver in pLAN or tLAN configura tion does not start control and the valve remains closed Check the pLAN tLAN connections Check that the pCO application connected to the driver where featured correctly manages the driver start signal Check that the driver is NOT in stand alone mode The driver in stand alone configuration does not start control and the valve remains closed Check the connection of the digital input Check that when the control signal is sent that the input is closed correctly Check that the driver is in stand alone mode Tab 10 a 47 EVD evolution 0300005EN rel 3 0 18 06 2010 CAREL 11 TECHNICAL SPECIFICATIONS Power supply e 24Vac 10 15 to be protected by external 2 A type T fuse Lmax 5 m _24Vdc 10 15 50 60 Hz to be protected by external 2 A type T fuse Use a dedicated class 2 transformer max 100 VA Power input e 16 2 W with ALCO EX7 EX8 valves 9 2 W with all other valves e 35 VA with EVBATO0400 35 VA with ALCO EX7 EX8 valves 20 VA without EVBAT00400 and with all other valves Emergency power supply 22 Vdc 5 If the optional EVBAT00200 300 module is installed Lmax 5 m nsulati
64. failed ALARM flashing No change automatic o effect Change Main control parameter ineffective setting Battery dischar Battery dischar red alarm Alarm flashing No change replace the o effect If the alarm persists for more than 3 ged ged or faultyor LED battery hours recharge time for EVBAT00500 electrical connec flashing replace the battery tion interrupted Wrong power DC driver power Green Depends on the Change Total shutdown Check the Power supply mode supply mode supply with Po POWER configuration Power sup parameter and power supply wer supply mode LED parameter ply mode parameter setto flashin parameter AC power supply gRed setting alarm LED Tab 9 a In the event of AC power supply with the Power supply mode parameter set to DC no alarm is displayed 9 2 Alarm relay configuration 9 3 Probe alarms The relay contact is open when the driver is not powered The probe alarms are part of the system alarms When the value measured During normal operation it can be disabled and thus will be always by one of the probes is outside of the field defined by the parameters open or configured as corresponding to the alarm limits an alarm is activated The limits can be e alarm relay during normal operation the relay contact is closed and set independently of the range of measurement Consequently the field opens when any alarm is activated It can be used to switch off the out
65. ften supplied by the manufacturer of the compressor It is usually between 10 C and 15 C If the closing of the valve also causes an excessive increase in the suction temperature S2 above the set threshold only set via supervisor PlantVisor pCO VPM not on the display the valve will be stopped to prevent overheating the compressor windings awaiting a reduction in the refrigerant charge If the MOP protection function is disabled by setting the integral time to zero the maximum suction temperature control is also deactivated Parameter description Def Min Max UOM CONTROL MOP protection suction temperature 30 60 72 200 392 C F threshold Tab 7 e At the end of the MOP protection function superheat regulation restarts in a controlled manner to prevent the evaporation temperature from exceeding the threshold again High Tcond high condensing temperature To activate the high condensing temperature protector High Tcond a pressure probe must be connected to input S3 The protector is activated so as to prevent too high evaporation temperatures from stopping the compressor due to the activation of the high pressure switch Parameter description Def Min Max UOM ADVANCED High Tcond threshold 80 60 200 eC CE 76 392 High Tcond integration time 20 0 800 s ALARM CONFIGURATION High condensing temperature alarm 600 0 18000 s timeout High T
66. g 1 Disabled relay AL_MAX psig 2 alarm relay opened in case of alarm S2 alarm temp S2_AL_ 50 60 S2_AL_MAX C F 3 Solenoid valve relay open in standby IN 4 valve alarm relay opened in stand by and control alarms 52 alarm MAX temp S2_AL_ 105 52_AL_ 200 392 C CF 5 Reversed alarm relay closed in case of alarm AX 6 Valve status relay open if valve is closed S3 alarm pressure 53_ 1 20 S3_AL_MAX barg Tab 9 b AL_MIN psig S3 alarm MAX pressure S3_ 93 S3_AL_ 200 2900 barg AL_MAX psig S4 alarm MIN temp S4_AL_ 50 l 60 S4_AL_MAX C F MIN S4 alarm MAX temp S4_AL_ 105 S4_AL_ 200 392 C F MAX Tab 9 c 43 EVD evolution 0300005EN rel 3 0 18 06 2010 The behaviour of the driver in response to probe alarms can be configured using the manufacturer parameters The options are e no action control continues but the correct measurement of the variables is not guaranteed forced closing of the valve control stopped valve forced to the initial position control stopped e use the backup probe valid only for probe S1 and S2 alarms control continues Parameter description Def CONFIGURATION S1 probe alarm manag No action 2 Valve forced closed 3 Valve at fixed position 4 Use backup probe 3 S2 probe alarm manag No action Valve forced closed Valve at fixed position Use backup probe S4 probe alarm manag o action orced closed Valve at fixed posit
67. he probes relating to other applications see the chapter on Control inputs S1 S2 are programmable and the connection to the terminals depends on the setting of the parameters See the chapters on Commissioning and Functions pressure probe S1 in the diagram is ratiometric See the general connection diagram for the other electronic probes 4 to 20 mA or combined four probes are needed for superheat control with SIAM ANB compressors two to measure the superheat and two to measure the discharge superheat and the discharge temperature See chap 5 EVD evolution 0300005EN rel 3 0 18 06 2010 2 4 Installation For installation proceed as follows with reference to the wiring diagrams 1 connectthe probes the probes can be installedamaximum distance of 10 metres away from the driver or a maximum of 30 metres as long as shielded cables are used with minimum cross section of 1 mm connect all the shields to the earth spade connector 2 connect any digital inputs maximum length 30 m 3 connectthe power cable tothe valve motors use 4 wire shielded cable AWG 22 Lmax 10 m or AWG 14 Lmax 50m failure to connect the valve motors after connecting the driver will generate the EEV motor error alarm see paragraph 9 5 4 carefullyevaluatethemaximum capacity ofthe relay outputspecifiedin the chapter Technical specifications 5 ifnecessary use a class 2 safety transformer suitably protec
68. ially set 13 C then gradually reduce the set point making sure the system does not start swinging again and that the unit temperature reaches the control set point In the start up phase with high evaporator tempe ratures the evaporation pressure is high MOP protection disabled or ineffective Activate the MOP protection by setting the threshold to the required saturated eva poration temperature high evaporation temperature limit for the compressors and setting the MOP integration time to a value above 0 recommended 4 seconds To make the protection more reactive decrease the MOP integration time Refrigerant charge excessive for the system or extreme transitory conditions at start up for cabinets only Apply a soft start technique activating the utilities one at a time or in small groups If this is not possible decrease the values of the MOP thresholds on all the utilities EVD evolution 0300005EN rel 3 0 18 06 2010 46 CAREL PROBLEM CAUSE SOLUTION In the start up phase the low pressure protection is activated only for self contained units The Valve opening at start up parameter is set too low Check the calculation in reference to the ratio between the rated cooling capacity of the evaporator and the capacity of the valve if necessary lower the value The driver in pLAN or tLAN configura tion does not start control and the valve remains closed
69. iciency EVD ra VI v2 Fig 5 i Key CP_ Compressor V2_ Thermostatic expasnion valve GC_ Gas cooler EV_ Electronic valve E Evaporator IHE V1_ Solenoid valve Inside heat exchanger For the wiring see paragraph 2 11 General connection diagram EVD evolution 0300005EN rel 3 0 18 06 2010 This involves PID control without any protectors LowSH LOP MOP High Tcond see the chapter on Protectors without any valve unblock procedure and without auxiliary control Control is performed on the gas cooler pressure probe value read by input S1 with a set point depending on the gas cooler temperature read by input S2 consequently there is not a set point parameter but rather a formula CO gas cooler pressure set point Coefficient A Tgas cooler S2 Coefficient B The set point calculated will be a variable that is visible in display mode Control is direct as the pressure increases the valve opens Parameter description Def Min Max UOM ADVANCED CO2 regui A coefficient 3 3 100 800 CO regul B coefficient 22 7 100 800 CONTROL PID proport gain 15 0 800 PID integration time 150 0 1000 s PID derivative time 5 0 800 s Tab 5 p Analogue positioner 4 to 20 mA The valve will be positioned linearly depending on the value of the 4 to 20 mA input for analogue valve positioning
70. ified design and production system as well as by the marks WARNING separate as much as possible the probe and digital input signal cables from the cables carrying inductive loads and power cables to avoid possible electromagnetic disturbance Never run power cables including the electrical panel wiring and signal cables in the same conduits NO POWER CABLES TOGETHER READ CAREFULLY IN THE TEXT EVD evolution 0300005EN rel 3 0 18 06 2010 CAREL Content 1 INTRODUCTION 7 We MOGEIS spiana 1 2 Functions and main characteristics 2 INSTALLATION 9 21 DIN rail assembly and dimensions 9 2 2 Description of the terminals ssssssssesssssessssssssusssssssssssesnsssesnesseses 9 2 3 Connection diagram superheat control 9 DA stait Oanei 10 2 5 Valve operation in parallel and complementary mode 10 2 6 Shared pressure probe csssssscsssssessssssesssssssssssssssssssessnsssesssssessessee 11 2 7 Connecting the USB tLAN CONVERTEr nn 11 2 8 Connecting the USB RS485 CONVERtET o 11 2 9 Upload Download and Reset parameters display 11 2 10 Show electrical connections display ssssssssssessssesessseesssesssetnee 12 2 11 General connection Diagrarn csscssssssesseessssesesssssessssesssaseessssseeseeees 12 3 USER INTERFACE 13 3 1 Assembling the display board ACCESSOrY
71. ion arm manag o action 2 Valve forced closed 3 Valve at fixed position CONTROL Valve opening at start up evaporator valve 50 capacity ratio Valve at fixed position Valve at fixed position No action n IL Will D lt o lt d No action Vw HW SII Ho 3 O og D o 2 Tab 9 d 9 4 Control alarms These are alarms that are only activated during regulation Protector alarms The alarms corresponding to the LowSH LOP MOP and High Tcond protectors are only activated during control when the corresponding activation threshold is exceeded and only when the timeout defined by the corresponding parameter has elapsed If a protector is not enabled integration time 0 s no alarm will be signalled If before the expiry of the timeout the protector control variable returns back inside the corresponding threshold no alarm will be signalled Note this is a likely event as during the timeout the protection function will have an effect If the timeout relating to the control alarms is set to 0 s the alarm is disabled The protectors are still active however The alarms are reset automatically Low suction temperature alarm The low suction temperature alarm is not linked to any protection function It features a threshold and a timeout and is useful in the event of probe or valve malfunctions to protect the compressor using the relay to control the s
72. is specified in the technical documentation supplied with the product or can be downloaded even prior to purchase from the website www carel com Each CAREL product in relation to its advanced level of technology requires setup configuration programming commissioning to be able to operate in he best possible way for the specific application The failure to complete such operations which are required indicated in the user manual may cause the final product to malfunction CAREL accepts no liability in such cases Only qualified personnel may install or carry out technical service on the product The customer must only use the product in the manner described in the documentation relating to the product n addition to observing any further warnings described in this manual the ollowing warnings must be heeded for all CAREL products prevent the electronic circuits from getting wet Rain humidity and all ypes of liquids or condensate contain corrosive minerals that may damage he electronic circuits In any case the product should be used or stored in environments that comply with the temperature and humidity limits specified in the manual e do not install the device in particularly hot environments Too high emperatures may reduce the life of electronic devices damage them and deform or melt the plastic parts In any case the product should be used or stored in environments that comply with the temperature and humidity imits sp
73. l temperature control of the cabinet In practice the close the controlled temperature gets to the set point the more the control function decreases the cooling capacity of the evaporator by closing the expansion valve By correctly setting the related parameters see below a very stable cabinet temperature can be achieved around the set point without ever closing the solenoid valve The function is defined by three parameters set point differential and offset Parameter description Def Min Max UOM ADVANCED Modul thermost setpoint 0 60 200 C PE 76 392 Modul thermost differential 0 1 0 1 100 CHR 0 2 180 Modul thermost SHset offset 0 fun 0 0 0 100 K R ction disabled 180 Tab 5 5 The first two should have values similar to those set on the controller for the cabinet or utility whose temperature is being modulated The offset on the other hand defines the intensity in closing the valve as the temperature decreases the greater the offset the more the valve will be modulated The function is only active in a temperature band between the set point and the set point plus the differential A Important the Modulating thermostat function should not be used on stand alone refrigeration units but only in centralised systems In fact in the former case closing the valve would cause a lowering of the pressure and consequently shut down the compressor Examp
74. la 44 Fig 9 b control alarm next to the flashing ALARM message the main page shows the type of protector activated Surriscaldam 4 9 E Apertura valvola dd amp IN Prg ee bP Fig 9 Note e to display the alarm queue press the Help button and scroll using the UP DOWN buttons e the control alarms can be disabled by setting the corresponding timeout to zero Type of alarm _ Cause of alarm LED Display Relay Reset Effect on control Checks solutions Probe S1 Probe S1 faulty red alarm ALARM flashing Depends on automatic Depends on pa Check the probe connections or exceeded set LED configuration rameter S1 probe Check the S1 probe alarm manag alarm range parameter alarm manag and S1 alarm MIN amp MAX pressure parameters Probe S2 Probe S2 faulty red alarm ALARM flashing Depends on automatic Depends on pa Check the probe connections Check or exceeded set LED configuration rameter S2 probe the S2 probe alarm manag and alarm range parameter alarm manag S2 alarm MIN amp MAX temperature parameters Probe S3 Probe S3 faulty red alarm ALARM flashing Depends on automatic Depends on pa Check the probe connections or exceeded set LED configuration rameter S3 probe Check the S3 probe alarm manag alarm
75. larger equivalent Stator broken or connected incorrectly Disconnect the stator from the valve and the cable and measure the resistance of the windings using an ordinary tester The resistance of both should be around 36 ohms Otherwise replace the stator Finally check the electrical connections of the cable to the driver Valve stuck closed Use manual control after start up to completely open the valve If the superheat remains high check the electrical connections and or replace the valve The cabinet does not reach the set temperature despite the value being opened to the maximum for multiple xed cabinets only Solenoid blocked Check that the solenoid opens correctly check the electrical connections and the operation of the relay Insufficient refrigerant Check that there are no bubbles of air in the liquid indicator upstream of the expansion valve Check that the subcooling is suitable greater than 5 C otherwise charge the circuit The valve is significantly undersized Replace the valve with a larger equivalent Stator broken or connected incorrectly Disconnect the stator from the valve and the cable and measure the resistance of the windings using an ordinary tester The resistance of both should be around 36 ohms Otherwise replace the stator Finally check the electrical connections of the cable to the driver Valve stuck closed Use manual control after start up to compl
76. les of operation 3 offset too low or function disabled S4 set point diff set point t 4 offset too high ON SV OFF t S4 set point diff set point 5 offset correct ON SV OFF t Fig 5 n Key diff differential SV solenoid valve showcase temperature control S4 temperature EVD evolution 0300005EN rel 3 0 18 06 2010 EVI evolution Fig 5 0 Key CP_ Compressor EEV Electronic expansion valve C Condenser V__ Solenoid valve L Liquid receiver E _ Evaporator F Dewatering filter P Pressure probe transducer S Liquid indicator T Temperature probe For the wiring see paragraph 2 11 General connection diagram Backup probes on S3 amp S4 A Important this type of control is compatible with the main control parameter setting between 1 and 18 In this case pressure probe S3 and temperature probe S4 will be used to replace probes S1 and S2 respectively in the event of faults on one or both so as to guarantee a high level of reliability of the controlled unit Key CP_ Compressor EEV Electronic expansion valve C Condenser V__ Solenoid valve L Liquid receiver E Evaporator F Dewatering filter P Pressure probe transducer S Liquid indicator T _ Temperature probe For the wiring see paragraph 2 11 General connection diagram EVD evolution 0300005EN rel 3 0 18 06 2010 26
77. lve was not successful 1 the Master programmable controller checks the value of the parameter and if this is equal to 1 decides the best strategy to implement based on the application 2 the driver on restart positions the valve as explained in the paragraph Pre positioning start control The parameter is reset to 0 zero by the Master controller e g pCO once the parameter has been set to 1 the driver returns it to 0 zero only if forced emergency closing is completed successfully Standby Standby corresponds to a situation of rest in which no signals are received to control the electronic valve This normally occurs e when the refrigeration unit stops operating either when switched off manually e g from the button supervisor or when reaching the control set point during defrosts except for those performed by reversing of the cycle or hot gas bypass In general it can be said that the electronic valve driver is in standby when the compressor stops or the solenoid valve closes The valve is closed or open delivering around 25 of the flow rate of refrigerant based on the setting of the valve open in standby parameter In this phase manual positioning can be activated Parameter description Def Min Max UOM CONTROL Valve open in standby 0 0 1 0 disabled valve closed 1 enabled valve open 25 Tab 6 k Pre positioning start control If during standby a control r
78. mised The software on the driver takes into consideration the unit of measure lf a range of measurement is selected and then the unit of measure is changed from bars to psi the driver automatically updates in limits of the range of measurement and the alarm limits BY default the main control probe S2 is set as CAREL NTC Other types of probes can be selected in the service menu e Unlike the pressure probes the temperature probes do not have any modifiable parameters relating to the range of measurement and consequently only the models indicated in the list can be used see the chapter on Functions and the list of parameters In any case in manufacturer programming mode the limits for the probe alarm signal can be customised CAREL Main regulation Setting the main control defines the operating mode of the driver Parameter description Def CONFIGURATION Main control multiplexed Superheat control cabinet cold 1 multiplexed cabinet cold room room 2 cabinet cold room with on board compressor 3 perturbed cabinet cold room 4 cabinet cold room with subcritical CO 5 R404A condenser for subcritical CO2 6 air conditioner chiller with plate heat exchanger 7 air conditioner chiller with tube bundle heat exchanger 8 air conditioner chiller with finned coil heat exchanger 9 air conditioner chiller with variable cooling capacity 0 perturbed air conditioner chiller Advanced
79. n barg psig If the 4 to 20 mA signal coming from an external controller on input S1 needs to be calibrated both the offset and the gain parameters can be used the latter which modifies the gradient of the line in the field from 4 to 20 mA of the temperature probe S2 and or S4 it is possible to use the offset parameter which represents a constant that is added to the signal across the entire range of measurement and can be expressed in C F If the 0 to 10 Vdc signal coming from an external controller on input S2 needs to be calibrated both the offset and the gain parameters can be used the latter which modifies the gradient of the line in the field from 0 to 10 Vdc EVD evolution 0300005EN rel 3 0 18 06 2010 CAREL e Regulation security if there is a network connection before control is activated the driver must receive the control activation signal and the selected digital input must be closed If the digital input is open the driver always remains in standby Priority of digital inputs In certain cases the setting of digital inputs 1 and 2 may be the same A A or alternatively may be incompatible e g digital input 1 regulation backup digital input 2 regulation security The problem thus arises to determine which function the driver needs to perform Fig 6 a Consequently each type of func
80. nd alarms During commissioning it guides the installer in setting the parameters required to start the installation and once completed can copy the parameters to other drivers The models differ in the first settable language the second language for all models is English EVDISO0 0 can be used to configure and monitor all the control parameters accessible via password at a service installer and manufacturer level EVD evolution user mentare Fig 1 a USB tLAN converter code EVDCNVOOEO The USB tLAN converter is connected once the LED board cover has been removed to the service serial port underneath Fitted with cables and connectors it can connect EVD evolution directly to a computer which using the VPM program can configure and program the driver VPM can also be used to update the driver and display firmware USB RS485 converter code CVSTDUMORO The converter is used to connect the configuration computer and the EVD evolution controllers for RS485 Modbus models only Fig 1 b EVD evolution 0300005EN rel 3 0 18 06 2010 CAREL Battery module code EVBAT00400 A Important the EVBAT00400 battery module can only be used with 24 Vac power supply The EVBAT00400 module is an electronic device made by CAREL which guarantees temporary power supply to the EVDOOOOE driver up to 2 drivers can be connected in the event of a sudden power failure It signals the battery discharged or fault
81. nsequently in the branch that runs to the compressor As liquid is not compressible it may cause damage to the compressor and even breakage if the quantity is considerable and the situation lasts some time Superheat control The parameter that the control of the electronic valve is based on is the superheat temperature which effectively tells whether or not there is liquid at the end of the evaporator The superheat temperature is calculated as the difference between superheated gas temperature measured by a temperature probe located at the end of the evaporator and the saturated evaporation temperature calculated based on the reading of a pressure transducer located at the end of the evaporator and using the Tsat P conversion curve for each refrigerant Superheat Superheated gas temperature Saturated evaporation temperature suction If the superheat temperature is high it means that the evaporation process is completed well before the end of the evaporator and therefore flow rate of refrigerant through the valve is insufficient This causes a reduction in cooling efficiency due to the failure to exploit part of the evaporator The valve must therefore be opened further Vice versa if the superheat temperature is low it means that the evaporation process has not concluded at the end of the evaporator and a certain quantity of liquid will still be present at the inlet to the compressor The valve must therefore be
82. nt valve pressure probe 51 main regulation check that the electrical connections are correct if the configuration is correct exit the procedure otherwise choose NO and return to step 2 Configurtion End configuration iw i e RN At the end of the configuration procedure the controller activates the valve motor error recognition procedure showing INIT on the display See paragraph 9 5 To simplify commissioning and avoid possible malfunctions the driver will not start until the following have been configured 1 network address refrigerant valve pressure probe S1 type of main control that is the type of unit the superheat control is applied to O Note to exit the guided commissioning procedure press the DOWN button repeatedly and finally confirm that configuration has been completed The guided procedure CANNOT be ended by pressing Esc if the configuration procedure ends with a configuration error access Service parameter programming mode and modify the value of the parameter in question if the valve and or the pressure probe used are not available in the ist select any model and end the procedure Then the driver will be enabled for control and it will be possible to enter Manufacturer programming mode and set the corresponding parameters manually LA be 10 A Important for 24 Vdc power supply at the end of the guided commissioning procedure to start cont
83. oid valve 1 3_ alarm signal A The connection cable to the valve motor must be 4 wire shielded AWG 18 22 4 red 2 Lmax 10m 5 black A Connect all the shields of the probe cables to the earth spade 6 blue 3 7 8 O Note for the configuration of the digital inputs see par 6 3 EVD evolution 0300005EN rel 3 0 18 06 2010 12 CAREL 3 USER INTERFACE The user interface consists of 5 LEDs that display the operating status as shown in the table Fig 3 a Key LED ON OFF Flashing NET Connection available No connection Communication error OPEN Opening valve Driver disabled CLOSE Closing valve Driver disabled A Active alarm 7 Driver powered Driver not powered Wrong power supply see chap Alarms Tab 3 a Awaiting completion of the initial configuration 3 1 Assemblingthedisplayboard accessory The display board once installed is used to perform all the configuration and programming operations on the driver It displays the operating status the significant values for the type of control that the driver is performing e g superheat control the alarms the status of the digital inputs and the relay output Finally it can save the configuration parameters for one driver and transfer them to a second driver see the procedure for upload and download parameters For installation remove the cover pressing on the fastening
84. olenoid valve or to simply signal a possible risk In fact the incorrect measurement of the evaporation pressure or incorrect configuration of the type of refrigerant may mean the superheat calculated is much higher than the actual value causing an incorrect and excessive opening of the valve A low suction temperature measurement may in this case indicate the probable flooding of the compressor with corresponding alarm signal If the alarm timeout is set to 0 s the alarm is disabled The alarm is reset automatically with a fixed differential of 3 C above the activation threshold EVD evolution 0300005EN rel 3 0 18 06 2010 44 CAREL Relay activation for control alarms As mentioned in the paragraph on the configuration of the relay in the event of LowSH MOP High Tcond and low suction temperature alarms the driver relay will open both when configured as an alarm relay and configured as a solenoid alarm relay In the event of LOP alarms the driver relay will only open if configured as an alarm relay Parameter description Def Min Max UOM CONTROL LowSH protection threshold 5 40 72 superheat K F set point LowSH protection integration time 15 0 800 S LOP protection threshold 50 60 76 MOP thre C F shold LOP protection integration time 0 0 800 S OP protection threshold 50 LOP th 200 392 C C
85. on between relay output and reinforced 6 mm in air 8 mm on surface 3750 V insulation other outputs otor connection 4 wire shielded cable i e CAREL code E2VCABS 00 or 4 wire shielded cable AWG 22 Lmax 10 m or 4 wire shielded cable AWG 14 Lmax 50m Digital input connection Digital input to be activated from voltage free contact or transistor to GND Closing current 5 mA Lmax 30m Probes Lmax 10 m S1 ratiometric pressure probe 0 to 5 V ess than 30 m with resolution 0 1 FS shielded cable measurement error 2 FS maximum 1 typical electronic pressure probe 4 to 20 mA e resolution 0 5 FS measurement error 8 FS maximum 7 typical remote electronic pressure probe 4 to 20 mA maximum number of drivers connected 5 e resolution 0 1 FS measurement error 2 FS maximum 1 typical 4 to 20 mA input max 24 mA resolution 0 5 FS measurement error 8 FS maximum 7 typical S2 low temperature NTC 10kQ at 25 C 50T90 C measurement error 1 C in the range 50T50 C 3 C in the range 50T90 C high temperature NTC 50kO at 25 C 40T150 C measurement error 1 5 C in the range 20T115 C 4 C in the range outside of 20T115 C NTC built in 10kQ at 25 C 40T120 C measurement error 1 C in the range 40T50 G 3 C in the range 50T90 C 0 to 10V input max 12 V resolution 0 1 FS measurement error 9 FS maximum 8 typical 53 ratiometric pr
86. ond exactly to the physical position of the movable element This means that when the driver reaches the estimated fully closed or fully open position the valve may physically not be in that position The Synchronisation procedure allows the driver to perform a certain number of steps in the suitable direction to realign the valve when fully opened or closed Note realignment is in intrinsic part of the forced closing procedure and is activated whenever the driver is stopped started and in the standby phase the possibility to enable or disable the synchronisation procedure depends on the mechanics of the valve When the setting the valve parameter the two synchronisation parameters are automatically defined The default values should not be changed Unblock valve This procedure is only valid when the driver is performing superheat control Unblock valve is an automatic safety procedure that attempts to unblock a valve that is supposedly blocked based on the control varia bles superheat valve position The unblock procedure may or may not succeed depending on the extent of the mechanical problem with the valve If for 10 minutes the conditions are such as to assume the valve is blocked the procedure is run a maximum of 5 times The symptoms of a blocked valve do not necessarily mean a mechanical blockage They may also represent other situations mechanical blockage of the solenoid valve upstream of the
87. ontrol phase starts Note if information is not available on the variation in unit cooling capacity this will always be considered as operating at 100 and therefore the procedure will never be used In this case the PID control must be more reactive see the chapter on Control so as to react promptly to variations in load that are not communicated to the driver Key A Control request T3 Repositioning time C Change capacity W Wait NP_ Repositioning t Time R__ Control Stop end control The stop procedure involves closing the valve from the current position until reaching 0 steps plus a further number of steps so as to guarantee complete closing Following the stop phase the valve returns to standby EVD evolution 0300005EN rel 3 0 18 06 2010 CAREL ON Lu t E g OFF i gt I T4 I t gt Fig 6 d Key A_ Control request R Control S Standby T4 Stop position time ST Stop t Time 6 5 Advanced control status As well as normal control status the driver can have 3 special types of status related to specific functions manual positioning this is used to interrupt control so as to move the valve setting the desired position e recover physical valve position recover physical valve steps when fully opened or closed e unblock valve forced valve movement if the driver considers it to be blocked Manual positioning Manual
88. ope 46 173 ning C S1 probe alarm manag Valve at fixed 24 151 No action position 2 Valve forced closed 3 Valve at fixed posit 4 Use backup probe 3 C S2 probe alarm manag Valve at fixed 25 152 No action position 2 Valve forced closed 3 Valve at fixed posit 4 Use backup probe S4 C S3 probe alarm manag No action 26 153 No action 2 Valve forced closed 3 Valve at fixed posit C S3 probe alarm manag No action 27 154 No action 2 Valve forced closed 3 Valve at fixed posit C Unit of measure C K barg F psig C K barg 21 148 A DI1 configuration Regulation 1 Disabled start stop 2 Valve regulation optimization after defrost tLAN RS485 3 Discharged battery alarm management Regulation 4 Valve forced open at 100 backup 5 Regulation start stop pLAN 6 Regulation backup 7 Regulation security C_ Language Italiano English taliano PROBES C S1 calibration offset 0 60 870 60 60 870 60 barg psig A 34 33 mA C_ S1 calibrat gain on 4 20 mA 1 20 20 A 36 35 C S1 pressure MINIMUM value 1 20 290 S1 pressure barg psig A 32 31 MAXIMUM value C S1 pressure MAXIMUM value 93 S1 pressure 200 2900 barg psig A 30 29 MINIMUM value C S1 alarm MIN pressure 1 20 290 S1 alarm MAX barg psig A 39 38 pressure C S1 alarm MAX pressure 93 S1 alarm MIN 200 2900 barg psig A 37 36 pressure
89. or any other liabilities deriving from the installation use or impossibility to use the product even if CAREL or its subsidiaries are warned of the possibility of such damage DISPOSAL INFORMATION FOR USERS ON THE CORRECT HANDLING OF WASTE ELECTRICAL AND ELEC TRONIC EQUIPMENT WEEE In reference to European 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 thepublicorprivatewastecollectionsystemsdefinedbylocallegislationmust 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 intheeventofillegaldisposalofelectricalandelectronicwaste the penalties are specified by local waste disposal legislation Warranty on the materials 2 years from the date of production excluding consumables Approval the quality and safety of CAREL INDUSTRIES products are guaranteed by the ISO 9001 cert
90. otection integration time 0 0 800 s ALARM CONFIGURATION Low evaporation temperature 300 J0 18000 5 alarm timeout LOP 0 alarm DISABLED Tab 7 c The integration time is set automatically based on the type of main control Note e the LOP threshold must be lower then the rated evaporation temperature of the unit otherwise it would be activated unnecessarily and greater than the calibration of the low pressure switch otherwise it would be useless As an initial approximation it can be set to a value exactly half way between the two limits indicated CAREL the protector has no purpose in multiplexed systems showcases where the evaporation is kept constant and the status of the individual electronic valve does not affect the pressure value the LOP alarm can be used as an alarm to highlight refrigerant leaks by the circuit A refrigerant leak in fact causes an abnormal lowering of the evaporation temperature that is proportional in terms of speed and extent to the amount of refrigerant dispersed ON LOP OFF ON ALARM OFF Fig 7 b Key T_EVAP __ Evaporation temperature D Alarm timeout LOP_TH Low evaporation temperature ALARM Alarm protection threshold LOP LOP protection t Time B Automatic alarm reset MOP high evaporation pressure MOP Maximum Operating Pressure The MOP protection threshold is applied as a saturated evaporation temperature value so that it can b
91. positioning can be activated at any time during the standby or control phase Manual positioning once enabled is used to freely set the position of the valve using the corresponding parameter Parameter description Def Min Max UOM CONTROL Enable manual valve position 0 0 1 Manual valve position 0 0 9999 step Tab 6 n Control is placed on hold all the system and control alarms are enabled however neither control nor the protectors can be activated Manual positioning thus has priority over any status protection of the driver Note e the manual positioning status is NOT saved when restarting after a power failure in for any reason the valve needs to be kept stationary after a power failure proceed as follows remove the valve stator in Manufacturer programming mode under the configuration parameters set the PID proportional gain 0 The valve will remain stopped at the initial opening position set by corresponding parameter CAREL Recover physical valve position Parameter description Def Min Max UOM VALVE EEV opening synchroniz i 0 1 EEV closing synchroniz 1 0 1 Tab 6 0 This procedure is necessary as the stepper motor intrinsically tends to lose steps during movement Given that the control phase may last con tinuously for several hours it is probable that from a certain time on the estimated position sent by the valve driver does not corresp
92. probes Important probes S3 and S4 appear as NOT USED if the auxiliary control parameter is set as disabled f auxiliary control has any other setting the manufacturer setting for the probe used will be shown which can be selected according to the type Auxiliary control Variable displayed High condensing temperature protection S3 Modulating thermostat S4 Backup probes S3 S4 Tab 6 e Parameter description Def Configuration Probe S3 Ratiom 1 to Ratiometric OUT 0 to 5 V Electronic OUT 4 to 20 mA 9 3 barg 1 1 to 4 2 barg 8 0 5 to 7 barg 2 0 4 to 9 3 barg 9 0 to 10 barg 3 1 to 9 3 barg 0 0 to 18 2 barg 4 0 to 17 3 barg 1 0 to 25 barg 5 0 85 to 34 2 barg 2 0 to 30 barg 6 0 to 34 5 barg 3 0 to 44 8 barg 7 0 to 45 barg 4 remote 0 5 to 7 barg 5 remote 0 to 10 barg 6 remote 0 to 18 2 barg 7 remote 0 to 25 barg 8 remote 0 to 30 barg 9 remote 0 to 44 8 barg 20 4 20 MA external signal cannot be selected 21 1 to 12 8 barg 22 0 to 20 7 barg 23 1 86 to 43 0 barg Tab 6 f Calibrating pressure probes S1 S3 and temperature probes S2 and S4 offset and gain parameters In case it is necessary to make a calibration of the pressure probe S1 and or S3 it is possible to use the offeset parameter which represents a constant that is added to the signal across the entire range of measurement and can be expressed i
93. psig Type of variable A analogue D digital l integer SVP variable address with CAREL protocol on 485 serial card Modbus variable address with Modbus protocol on 485 serial card EVD evolution 0300005EN rel 3 0 18 06 2010 40 CAREL 8 3 Variables used based on the type of control The following table shows the variables used by the driver depending on the values of the Main control and Auxiliary control parameters These variables can be shown on the display by accessing display mode see paragraph 3 3 Display mode and via a serial connection with VPM PlantVisorPRO Proceed as follows to display the variables e press UP DOWN press the DOWN button to move to the next variable screen e press Esc to return to the standard display Main control Variable displayed Superheat control i wf sa 2 05 5 Auxiliary control Y e pI Ses 53 2 29 8 23 9 2o High Tcond Modulating 5 6 Sag S 5 82523 ga a sL5939 CRA thermostat ego e edge efgG S fo sf ds e Oo w 2 UU lt 3 lt 02354 O I g jI 5 Z3u 0 3 lt a NON Valve opening Valve position step Current unit cooling capacity Control setpoint Superheat Suction temperature Evaporation temperature Evaporation pressure Condensing temperature Condensing pressure Modulating thermostat temperature EPR pressure back pressure Hot gas bypass pressure Hot gas bypass tempe
94. r devices contactors circuit breakers etc Reduce the path of the probe cables as much as possible and avoid enclosing power devices e avoid powering the driver directly from the main power supply in the panel if this supplies different devices such as contactors solenoid valves etc which will require a separate transformer 2 5 Valve operation in parallel and complementary mode EVD evolution can control two CAREL valves connected together see paragraph 4 2 in parallel mode with identical behaviour or in complementary mode whereby if one valve opens the other closes by the same percentage To achieve such behaviour simply set the valve parameter Two EXV connected together and connect the valve motor power supply wires to the same connector In the example shown below for operation of valve B_2 with valve B_1 in complementary mode simply swap the connection of wires 1 and 3 2 CAREL valves connected in parallel 2 CAREL valves connected in com mode plementary mode CAREL EXV CAREL EXV VALVE A_1 VALVE B_1 ne 4 4 2 2 3 3 I 1 1 CAREL E V CAREL E V VALVE A_2 VALVE B_2 Xx HI 4 4 2 2 ral T sE LI 1 a iti 131 ol H 1 3 2 4 1324 CAREL O Note operation in parallel and complementary mode can only be used for CAREL valves within the limits shown in the table below where OK means tha
95. r returns to the previous value if no button is pressed after 5 min the display automatically returns to the standard mode to seta negative value move to the left most digit and press Up Down EVD evolution 0300005EN rel 3 0 18 06 2010 14 CAREL Modifying the Manufacturer parameters The Manufacturer level is used to configure all the driver parameters and consequently in addition to the Service parameters the parameters relating to alarm management the probes and the configuration of the valve See the table of parameters Procedure 15 press Esc one or more times to switch to the standard display 16 press Prg the display shows a screen with the PASSWORD request 17 pressENTERandenterthe Manufacturer level password 66 starting from the right most figure and confirming each figure with ENTER 18 ifthe value entered is correct the list of parameter categories is shown Configuration Probes Control Special Alarm configuration Valve 19 presstheUP DOWNbuttonstoselectthecategoryand ENTERto access the first parameter in the category 20 pressUP DOWNtoselectthe parameterto be setand ENTERto moveto the value of the parameter 21 press UP DOWN to modify the value 22 press ENTER to save the new value of the parameter 23 repeat steps 6 7 8 to modify the other parameters 24 press Esc to exit the procedure for modifying the Manufacturer parameters Note all the driver paramete
96. ra valvola The optimisation procedure can only be performed if the driver is in control status and lasts from 10 to 40 minutes performing specific movements of the valve and measurements of the control variables Note e during the function maintenance of the superheat set point is not guaranteed however the safety of the unit is ensured through activation of the protectors If these are activated the procedure is interrupted if due to external disturbance or in the case of particularly unstable systems the procedure cannot suitably optimise the parameters the controller will continue using the parameters saved in the memory before the procedure was started If the procedure ends successfully the resulting control parameters will be automatically saved EVD evolution 0300005EN rel 3 0 18 06 2010 20 CAREL e both the tuning procedure and adaptive control can only be enabled for superheat control they cannot be used for the advanced control functions For CAREL internal use only some tuning procedure control parameters can be shown on the display supervisor pCO and VPM these must not be modified by non expert users These are Tuning method Adaptive control status Last tuning result Tuning method is visible as a parameter in the Special category the two other parameters are visible in display mode See paragraph 3 3 Parameter Description Def Min Max UoM ADVAN
97. rature CO gas cooler outlet temperature CO gas cooler outlet pressure CO gas cooler pressure set point S1 probe measurement S2 probe measurement S3 probe measurement S4 probe measurement 4 to 20 mA input value 0 to 10 Vdc input value DI1 digital input status DI2 digital input status EVD firmware version Display firmware version Adaptative regulation status 0 Not enabled or stopped 1 Monitoring superheat 2 Monitoring suction temperature 3 Wait superheat stabilisation 4 Wait suction temperature stabilisation 5 Applying step 6 Positioning valve 7 Sampling response to step 8 Wait stabilisation in response to step 9 Wait tuning improvement 10 Stop max attempts exceeded Last tuning result 0 No attempt performed 1 Attempt interrupted 2 Step application error 3 Time constant delay error 4 Model error 5 Tuning ended successfully on suction temperature 6 Tuning ended successfully on superheat Discharge superheat Discharge temperature Tab 8 c Digital input status 0 open 1 closed Note the readings of probes S1 S2 S3 S4 are always displayed regardless of whether or not the probe is connected 41 EVD evolution 0300005EN rel 3 0 18 06 2010 9 1 Alarms There are two types of alarms e system valve motor E
98. return of liquid Then gradually reduce the set point always making sure there is no return of liquid Low superheat protection ineffective If the superheat remains low for too long with the valve that is slow to close increase the low superheat threshold and or decrease the low superheat integration time Initially set the threshold 3 C below the superheat set point with an integration time of 3 4 seconds Then gradually lower the low superheat threshold and increase the low superheat integration time checking that there is no return of liquid in any operating conditions Stator broken or connected incorrectly Disconnect the stator from the valve and the cable and measure the resistance of the windings using an ordinary tester The resistance of both should be around 36 ohms Otherwise replace the stator Finally check the electrical connections of the cable to the driver Valve stuck open Check if the superheating is always low lt 2 C with the valve position permanently at 0 steps If so set the valve to manual control and close it completely If the superheat is always low check the electrical connections and or replace the valve The valve opening at start up parameter is too high on many cabinets in which the control set point is often reached for multiplexed cabinets only Decrease the value of the Valve opening at start up parameter on all the utilities making sure that there are no repercu
99. rol set Power supply mode parameter 1 otherwise the valve remains in the closed position See paragraph 6 1 EVD evolution 0300005EN rel 3 0 18 06 2010 Network address The network address assigns to the driver an address for the serial connection to a supervisory system via RS485 and to a pCO controller via pLAN tLAN Modbus Parameter description Def Min Max _ UOM CONFIGURATION Network address 198 1 207 Tab 4 d For network connection of the RS485 Modbus models the communication speed also needs to be set in bits per second using the parameter Network settings See paragraph 6 1 Refrigerant The type of refrigerant is essential for calculating the superheat In addition it is used to calculate the evaporation and condensing temperature based on the reading of the pressure probe Parameter description Def CONFIGURATION Refrigerant R404A 1 R22 2 R134a 3 R404A 4 R407C 5 R410A 6 R507A 7 R290 8 R600 9 R600a 10 R717 11 R744 12 R728 13 R1270 14 R417A 15 R422D 16 R413A 17 R422A 18 R423A 19 R407A 20 R427A Tab 4 e Valve Setting the type of valve automatically defines all the control parameters based on the manufacturer s data for each model In Manufacturer programming mode the control parameters can then be fully customised ifthe valve used is not in the standard list In this case the
100. rs can be modified by entering the Manufacturer level if when setting a parameter the value entered is out of range this is not accepted and the parameter soon after returns to the previous value if no button is pressed after 5 min the display automatically returns to the standard mode CAREL 4 COMMISSIONING 4 1 Commissioning Once the electrical connections have been completed see the chapter on installation and the power supply has been connected the operations required for commissioning the driver depend on the type of interface used however essentially involve setting just 4 parameters refrigerant valve type of pressure probe S1 and type of main control Types of interfaces e DISPLAY after having correctly configured the setup parameters confirmation will be requested Only after confirmation will the driver be enabled for operation the main screen will be shown on the display and control will be able to commence when requested by the pCO controller via LAN or when digital input DI1 DI2 closes See paragraph 4 2 VPM to enable control of the driver via VPM set Enable EVD control o 1 this is included in the safety parameters in the special parameters menu under the corresponding access level However the setup parameters should first be set in the related menu The driver will then be enabled for operation and control will be able to commence when equested by the pCO controller via LAN or when digit
101. rting control also called pre positioning when powering the unit and in the delay after defrosting control effective control of the electronic valve unit ON positioning step change in the valve position corresponding to the start of control when the cooling capacity of the controlled unit varies only for pLAN EVD connected to a pCO CAREL stop end of control with the closing of the valve corresponds to the end of temperature control of the refrigeration unit unit OFF e valve motor error recognition see paragraph 9 5 tuning in progress see paragraph 5 3 Forced closing Forced closing is performed after the driver is powered up and corresponds to a number of closing steps equal to the parameter Closing steps based on the type valve selected This is used to realign the valve to the physical position corresponding to completely closed The driver and the valve are then ready for control and both aligned at 0 zero On power up first a forced closing is performed and then the standby phase starts Parametro description Def Min _ Max UOM VALVE EEV closing steps 500 0 9999 step Tab 6 j The valve is closed in the event of power failures with 24 Vac power supply when the EVBAT00400 battery module is connected In this case the parameter Forced valve closing not completed visible only on the supervisor is forced to 1 If when restarting forced closing of the va
102. s 20T70 C humidity 90 rH non condensing ndex of protector P20 Environmental pollution 2 normal Resistance to heat and fire Category D mmunity against voltage surges Category 1 Type of relay action 1C microswitching Class of insulation Il Software class and structure A Conformity Electrical safety EN 60730 1 EN 61010 1 Electromagnetic compatibility EN 61000 6 1 EN 61000 6 2 EN 61000 6 3 EN 61000 6 4 EN61000 3 2 EN55014 1 EN55014 2 EN61000 3 3 Tab 11 a EVD evolution 0300005EN rel 3 0 18 06 2010 48 CAREL 12 APPENDIX VPM VISUAL PARAMETER MANAGER 12 1 Installation On the http ksa carel com website under the Parametric Controller Software section select Visual Parameter Manager A window opens allowing 3 files to be downloaded 1 VPM_CDzip for burning to a CD 2 Upgrade setup 3 Full setup the complete program For first installations select Full setup for upgrades select Upgrade setup The program is installed automatically by running setup exe Note if deciding to perform the complete installation Full setup first uninstall any previous versions of VPM 12 2 Programming VPM When opening the program the user needs to choose the device being configured EVD evolution The Home page then opens with the choice to create a new project or open an existing project Choose new project and enter the password which when accessed the first time can be set by the
103. s set too high Check the calculation in reference to the ratio between the rated cooling capacity of the evaporator and the capacity of the valve if necessary lower the value The superheat value swings around the set point with an amplitude greater than 4 C The condensing pressure swings Check the controller condenser settings giving the parameters blander values e g increase the proportional band or increase the integration time Note the required stability involves a variation within 0 5 bars If this is not effective or the settings cannot be changed adopt electronic valve control parameters for perturbed systems The superheat swings even with the valve set in manual control in the position cor responding to the average of the working values Check for the causes of the swings e g low refrigerant charge and resolve where pos sible If not possible adopt electronic valve control parameters for perturbed systems The superheat does NOT swing with the valve set in manual control in the position corresponding to the average of the working values As a first approach decrease by 30 to 50 the proportional factor Subsequently try increasing the integration time by the same percentage In any case adopt parameter settings recommended for stable systems The superheat set point is too low Increase the superheat set point and check that the swings are reduced or disappear Init
104. see paragraph 2 5 for the connection diagram The firmware can be downloaded from http ksa carel com See the VPM On line help EVD evolution 0300005EN rel 3 0 18 06 2010 50 CAREL CAREL CAREL INDUSTRIES HeadQuarters Via dell Industria 11 35020 Brugine Padova Italy Tel 39 049 9716611 Fax 39 049 9716600 e mail carel carel com www carel com Agenzia Agency 0300005EN rel 3 0 18 06 2010
105. side of which the alarm is signalled can be restricted to ensure greater compressor and the system in the event of alarms safety of the controlled unit e solenoid valve relay during normal operation the relay contact is closed and is open only in standby There is no change in the event of alarms e solenoid valve relay alarm during normal operation the relay contact is closed and opens in standby and or for LowSH MOP High Note the alarm limits can also be set outside of the range of measurement o avoid unwanted probe alarms In this case the correct operation of the unit or the correct signalling of alarms will not be guaranteed Tcond and low suction temperature alarms This is because following by default after having eee the Ype OF probe usea tne alarm such alarms the user may want to protect the unit by stopping the imits will be automatically set to the limits corresponding to the range flow of refrigerant or switching off the compressor of measurementofthe probe The LOP alarm is excluded as in the event of low evaporation temperature Parameter description Def Min Max UOM closing the solenoid valve would worsen the situation PROBESs S1 alarm pressure S1_ 1 20 290 S1_AL_MAX barg Parameter description Def AL_MIN psig Relay configuration Alarm S1 alarm MAX pressure S1_ 9 3 ST_AL_ 200 2900 bar
106. ssions on the control temperature Liquid returns to the com pressor only after defrosting for multiplexed cabinets only The pause in control after defrosting is too short ncrease the value of the valve control delay after defrosting parameter The superheat temperature measured by the driver after defrosting and before reaching operating conditions is very low for a few minutes Check that the LowSH threshold is greater than the superheat value measured and that he corresponding protection is activated integration time gt 0 s If necessary decrease he value of the integration time The superheat temperature measured by the driver does not reach low values but there is still return of liquid to the compres sor rack Set more reactive parameters to bring forward the closing of the valve increase the proportional factor to 30 increase the integration time to 250 s and increase the deri vative time to 10 sec Many cabinets defrosting at the same time Stagger the start defrost times If this is not possible if the conditions in the previous two points are not present increase the superheat set point and the LowSH thresholds by at least 2 C on the cabinets involved The valve is significantly oversized Replace the valve with a smaller equivalent Liquid returns to the com pressor only when starting the controller after being OFF The valve opening at start up parameter i
107. ssure set point Control is direct as the pressure increases the valve opens and vice versa Parameter description Def Min Max UOM CONTROL EPR pressure set point 3 5 20 290 200 2900 barg psig PID proport gain 15 0 800 PID integration time 150 10 1000 S PID derivative time 5 0 800 S Tab 5 m Hot gas bypass by pressure This control function can be used to control cooling capacity If there is no request from circuit B the compressor suction pressure decreases and the bypass valve opens to let a greater quantity of hot gas flow and decrease the capacity of the circuit EVD evolution CP_ Compressor V1 Solenoid valve C Condenser V2__ Thermostatic expasnion valve L Liquid receiver EV_ Electronic valve F__ Dewatering filter E Evaporator S Liquid indicator For the wiring see paragraph 2 11 General connection diagram This involves PID control without any protectors LowSH LOP MOP High Tcond see the chapter on Protectors without any valve unblock procedure and without auxiliary control Control is performed on the hot gas bypass pressure probe value read by input S1 compared to the set point Hot gas bypass pressure set point Control is reverse as the pressure increases the valve closes and vice versa Parameter description Def Min Max UOM CONTROL Hot gas bypass pressure set point 3 20 200 barg
108. t of the variables shown on the display see the chapter Table of parameters in Prg Esc 4 4 Fig 3 d 3 4 Programming mode display The parameters can be modified using the front keypad Access differs according to the user level Service Installer and manufacturer Modifying the Service parameters IThe Service parameters as well as the parameters for commissioning the driver also include those for the configuration of the inputs the relay output the superheat set point or the type of control in general and the protection thresholds See the table of parameters Procedure 5 press Esc one or more times to switch to the standard display 6 press Prg the display shows a screen with the PASSWORD request 7 press ENTER and enter the password for the Service level 22 starting from the right most figure and confirming each figure with ENTER 8 ifthevalueenteredis correct thefirst modifiable parameteris displayed network address 9 press UP DOWN to select the parameter to be set 10 press ENTER to move to the value of the parameter 11 press UP DOWN to modify the value 12 press ENTER to save the new value of the parameter 13 repeat steps 5 6 7 8 to modify the other parameters 14 press Esc to exit the procedure for modifying the Service parameters Fig 3 e Note if when setting a parameter the value entered is out of range this is not accepted and the parameter soon afte
109. t the valve can be used with all refrigerants at the rated operating pressure Model of CAREL valve E2V E3v Eav esv E6v E7v Two EXV connected OK OK together E4V85 with all refrigerants except NO NO NO for R410A E4V95 only with R134a 2 6 Shared pressure probe Only 4 to 20 mA pressure probes not ratiometric can be shared The probe can be shared by a maximum of 5 drivers For multiplexed systems where controllers EVD evolution to EVD evolution5 share the same pressure probe choose the normal option for EVD evolution and the remote option for the other drivers up to the fifth EVD evolution6 must use another pressure probe P2 EXAMPLE EVD Evolution to EVD Evolution5 EVD Evolution6 Probe S1 0 5 to 7 barg P1 to remote 0 5 to 7 barg _ 0 5 to 7 barg P2 EVD Evolution 1 EVD Evolution 5 EVD Evolution 6 BE aaa a 58 dom BEng na 58 com Baana Ea dom i W L UL J in TI PI P2 Key P1 Shared pressure probe P2 Pressure probe 2 7 Connecting the USB tLAN converter Procedure remove the LED board cover by pressing on the fastening points plug the adapter into the service serial port connect the adapter to the converter and then this in turn to the computer power up the driver lt lt 1324 S 52 9 noonnnonnnnonnnnon O O Cz EVDCNVOOEO tu O N OPEN y CLOSE
110. te if only one backup probe is fitted under the manufacture parameters the probe thresholds and alarm management can be set separately HITCond protection high condensing temperature The functional diagram is shown below EVD evolution Fig 5 m Key CP_ Compressor EEV Electronic expansion valve C__ Condenser V__ Solenoid valve L Liquid receiver E Evaporator F Dewatering filter P Pressure probe transducer S Liquid indicator T_ _ Temperature probe For the wiring see paragraph 2 11 General connection diagram As already mentioned the HITCond protection can only be enabled if the controller measures the condensing pressure temperature and responds moderately by closing the valve in the event where the condensing temperature reaches excessive values to prevent the compressor from shutting down due to high pressure The condensing pressure probe must be connected to input S3 Modulating thermostat This function is used by connecting a temperature probe to input S4 to modulate the opening of the electronic valve so as to limit the lowering of the temperature read and consequently reach the control set point This is useful in applications such as the multiplexed cabinets to avoid the typical swings in air temperature due to the ON OFF control thermostatic of the solenoid valve A temperature probe must be connected to input S4 located in a similar position to the one used for the traditiona
111. tectors Note that the protection thresholds are set by the installer manufacturer while the times are automatically set based on the PID control values suggested by CAREL for each application Tab 5 d 5 3 Adaptive control and autotuning EVD evolution features two functions used to automatically optimise the PID parameters for superheat control useful in applications where there are frequent variations in thermal load 1 automatic adaptive control the function continuously evaluates the effectiveness of superheat control and activates one or more optimisation procedures accordingly 2 manual autotuning this is activated by the user and involves just one optimisation procedure Both procedures give new values to the PID superheat control and protection function parameters PID proportional gain PID integration time PID derivative time LowSH low superheat integration time LOP low evaporation temperature integration time MOP high evaporation temperature integration time Hilcond high condensing temperature integration time Given the highly variable dynamics of superheat control on different units applications and valves the theories on stability that adaptive control and autotuning are based on are not always definitive As a consequence the following procedure is suggested in which each successive step is performed if the previous has not given a positive outcome 1 use the parameters
112. ted against short circuits and voltage surges For the power ratings see the general connection diagram and the technical specifications 6 the minimum size of the connection cables must be 0 5 mm 7 power up the driver in the event of 24Vdc power supply the drive will close the valve A Important in the event of 24Vdc power supply set the Power supply mode parameter 1 to start control See par 6 1 8 program the driver if necessary see the chapter User interface 9 connectthe serial network iffeatured follow tothe diagrams below for the earth connection Case 1 multiple drivers connected in a network powered by the same transformer Typical application for a series of drivers inside the same electrical panel 230 Vac Fig 2 d Case 2 multiple drivers connected in a network powered by different transformers GO not connected to earth Typical application for a series of drivers in different electrical panels 230 Vac 230 Vac Fig 2 e Case 3 multiple drivers connected in a network powered by different transformers with just one earth point Typical application for a series of drivers in different electrical panels g g g 230 Vac 230 Vac Fig 2 f EVD evolution 0300005EN rel 3 0 18 06 2010 10 CAREL A Important avoid installing the driver in environments with the following characteristics e relative humidity greater th
113. tense opening Immediate MOP Moderate closing Controlled High Tcond Moderate closing Controlled Tab 7 a Reaction summary description of the type of action in controlling the valve Reset summary description of the type of reset following the activation of the protector Reset is controlled to avoid swings around the activation threshold or immediate reactivation of the protector LowSH low superheat The protector is activated so as to prevent the return of liquid to the compressor due to excessively low superheat valves from Parameter description Def Min Max UOM CONTROL LowSH protection threshold 5 40 72 set point K F superheat LowSH protection integration 15 0 800 S time ALARM CONFIGURATION Low superheat alarm timeout 300 0 18000 S LowSH 0 alarm DISABLED Tab 7 b EVD evolution 0300005EN rel 3 0 18 06 2010 32 CAREL 7 PROTECTORS When the superheat value falls below the threshold the system enters low superheat status and the intensity with which the valve is closed is increased the more the superheat falls below the threshold the more intensely the valve will close The LowSH threshold must be less than or equal to the superheat set point The low superheat integration time indicates the intensity of the action the lower the value the more intense the action The integration time is set automatically based on the type of main
114. the 2 LEDs on the converter will flash EVD evolution 0300005EN rel 3 0 18 06 2010 Fig 12 f O Note the program On line help can be accessed by pressing F1 12 3 Copying the setup On the Configure device page once the new project has been created to transfer the list of configuration parameters to another driver read the list of parameters from the source driver with the Read command remove the connector from the service serial port connect the connector to the service port on the destination driver e write the list of parameters to the destination driver with the Write command A Important the parameters can only be copied between controllers with the same code Different firmware versions may cause compatibility problems 12 4 Setting the default parameters When the program opens e select the model from the range and load the associated list of parameters go to Configure device the list of parameters will be shown with the default settings connect the connector to the service serial port on the destination driver during the write procedure the LEDs on the converter will flash The driver parameters driver will now have the default settings 12 5 Updating the driver and display firmware The driver and display firmware must be updated using the VPM program on a computer and the USB tLAN converter which is connected to the device being programmed
115. tion is assigned a priority primary PRIM evi or secondary SEC as shown in the table dei aia DI1 DI2 configuration Type of function Sc 1 Disabled SEC B galn 2 Valve regulation optimization after defrost SEC 3 Discharged battery alarm management SEG Parameter description Def Min Max UOM 4 Valve forced open at 100 SEC PROBES 5 Regulation start stop PRIM S1 calibration offset 0 60 870 60 870 barg psig 6 Regulation backup PRIM 60 60 mA 7 Regulation security PRIM S1 calibration gain on 4 20 mA _ 1 20 20 S2 calibration offset 0 20 290 20 290 C F volt There are four possible cases of digital input configurations with primary 20 20 or secondary functions 2 calibration gain 0 to 10V l 20 A Function set Function performed by digital input S3 calibration of set 0 60 870 60 870 barg psig DIT DIZ PRIM p oe p S4 calibration offset 0 20 36 20 36 C P PRIM PRIM DI PRIM SEC DII DI2 a SEC PRIM DI Dn Digital inputs SEC SEC Regulation backup DI1 The functions of digital inputs 1 and 2 can be set by parameter as shown supervisor variable in the table below Parameter description Def Min Max UOM CONFIGURATION DI1 configuration 5 6 1 1 Disabled 2 Valve regulation optimization after defrost 3 Disch battery alarm management 4 Valve forced open at 100 5 Regulation start stop 6 Regulation backup 7 Regulation security CONTROL Start delay after defrost 10 0 60 min Tab
116. universal pLAN with various types of refrigerants and valves n applications with chillers FVDO000EI EVD evolution universal pLAN multiple pack of 10 pcs air conditioners and refrigerators the latter including subcritical and EVD0000E20 EVD evolution universal RS485 Modbus transcritical CO systems It features low superheat high evaporation EVD0000E2 EVD evolution universal RS485 Modbus multiple pack of pressure MOP low evaporation pressure LOP and high condensing 10 pes temperature protection and can manage as an alternative to superheat EVD0000E30 EVD evolution for CAREL valves tLAN control special functions such as the hot gas bypass the evaporator EVD0000E3 EVD evolution for CAREL valves tLAN multiple pack 10 pressure control EPR and control of the valve downstream of the gas pcs cooler in transcritical CO circuits EVD0000E40 EVD evolution for CAREL valves pLAN In the versions for CAREL valves if integrated with a specific CAREL pCO EVDO000E41 EVD evolution for CAREL valves pLAN multiple pack 10 controller via LAN the driver can control one of the following _ pes _ an electronic expansion valve in a refrigerant circuit with Emerson EVD0000E50 _ EVD evolution for CAREL valves RS485 Modbus Climate Technologies Digital Scroll compressor EVDO000E5 EVD evolution for CAREL valves RS485 Modbus multiple pack 10 pcs EVD0002E10 EVD evolution universal pLAN opto isolated EVD0002E20
117. value does not vary significantly the valve will essentially remain stationary and he set point cannot be reached the integral action is linked to time and moves the valve in proportion o the deviation of the superheat value from the set point The greater he deviations the more intense the integral action in addition the ower the value of T integration time the more intense the action will be The integration time in summary represents the intensity of he reaction of the valve especially when the superheat value is not near the set point the derivative action is linked to the speed of variation of the superheat value that is the gradient at which the superheat changes from instant o instant It tends to react to any sudden variations bringing forward he corrective action and its intensity depends on the value of the ime Td derivative time Parameter description Def Min Max UOM CONTROL Superheat set point 17 LowSH t hold 180 320 K F PID proport gain 15 0 800 PID integration time 150 0 1000 s PID derivative time 5 0 800 s Tab 5 c See the EEV system guide 030220810 for further information on calibrating PID control O Note when selecting the type of main control both superheat control and special modes the PID control values suggested by CAREL will be automatically set for each application Protector control parameters See the chapter on Pro
118. value low or null The driver can receive information on the defrost phase in progress via digital input 2 The Start up delay after defrost parameter is used to set a delay when control resumes so as to overcome this problem During this delay the valve will remain in the pre positioning point while all the normal probe alarms procedures etc managed Parameter description Def Min Max UOM CONTROL Start up delay after defrost 10 0 60 min Tab 6 m A Important if the superheat temperature should fall below the set point control resumes even if the delay has not yet elapsed EVD evolution 0300005EN rel 3 0 18 06 2010 Key A Control request W Wait S__ Standby T1_ Pre positioning time P__ Pre positioning T2 Start up delay after defrost R__ Control Time Positioning change cooling capacity This control status is only valid for the pLAN driver If there is a change in unit cooling capacity of at least 10 sent from the pCO via the pLAN the valve is positioned proportionally In practice this involves repositioning starting from the current position in proportion to how much the cooling capacity of the unit has increased or decreased in percentage terms When the calculated position has been reached regardless of the time taken this varies according to the type of valve and the position there is a constant 5 second delay before the actual c
119. values above 200 barg 2900 psig and temperature values above 200 C 392 F cannot be converted 39 EVD evolution 0300005EN rel 3 0 18 06 2010 CAREL 8 2 Variables accessible via serial connection Description Default Min Max Type CAREL SVP Modbus R W Probe S1 reading 0 20 290 200 2900 A 1 0 R Probe S2 reading 0 60 870 200 2900 A 2 1 R Probe S3 reading 0 20 290 200 2900 A 3 2 R Probe S4 reading 0 60 76 200 392 A 4 3 R Suction temperature 0 60 76 200 392 A 5 4 R Evaporation temperature 0 60 76 200 392 A 6 5 R Evaporation pressure 0 20 290 200 2900 A 7 6 R Hot gas bypass temperature 0 60 76 200 392 A 8 7 R EPR pressure back pressure 0 20 290 200 2900 A 9 8 R Superheat 0 40 72 180 324 A 0 9 R Condensing pressure 0 20 290 200 2900 A 1 0 R Condensing temperature 0 60 76 200 392 A 2 1 R odulating thermostat temperature 0 60 76 200 392 A 3 2 R Hot gas bypass pressure 0 20 290 200 2900 A 4 3 R CO gas cooler outlet pressure 0 20 290 200 2900 A 5 4 R CO gas cooler outlet temperature 0 60 76 200 392 A 6 5 R Valve opening 0 0 00 A 7 6 R CO gas cooler pressure set point 0 20 290 200 2900 A 8 R 4 20 MA input value 4 4 20 A 9 8
120. valve closes Parameter description Def Min Max _ UOM CONTROL Hot gas bypass temperature set point 10 60 200 C F 76 392 PID proportional gain 15 0 800 PID integration time 150 0 1000 s PID derivative time 5 0 800 s Tab 5 0 Another application that exploits this control function uses the connection of two EXV valves together to simulate the effect of a three way valve called reheating To control humidity valve EV_1 is opened to let the refrigerant flow into exchanger S At the same time the air that flows through evaporator E is cooled and the excess humidity removed yet the temperature is below the set room temperature It then flows through exchanger S which heats it back to the set point reheating 23 Transcritical CO2 gas cooler This solution for the use of CO in refrigerating systems with a transcritical cycle involves using a gas cooler that is a refrigerant air heat exchanger resistant to high pressures in place of the condenser In transcritical operating conditions for a certain gas cooler outlet temperature there is pressure that optimises the efficiency of the system Set A T B Set pressure set point in a gas cooler with transcritical CO T gas cooler outlet temperature Default value A 3 3 B 22 7 In the simplified diagram shown below the simplest solution in conceptual terms is shown The complications in the systems arise due to the high pressure and the need to optimise eff
121. wer supply COM1 NO1 Alarm relay GND Earth for the signals VREF Power to active probes SI Probe 1 pressure or 4 to 20 mA external signal S2 Probe 2 temperature or 0 to 10 V external signal S3 Probe 3 pressure S4 Probe 4 temperature DII Digital input 1 DI2 Digital input 2 By Terminal for tLAN pLAN RS485 Modbus connection Terminal for tLAN pLAN RS485 Modbus connection Terminal for pLAN RS485 Modbus connection aa service serial port remove the cover to access b serial por Tab 2 b CAREL EXV 230 Vac 24 Vac Fig 2 in combination with Alco EX7 or EX8 valves use a 35 VA transformer code TRADRFE240 Key 1 green 2 yellow 3 brown 4 white 5 personal computer for configuration 6 USB tLAN converter 7 adapter 8 ratiometric pressure transducer evaporation pressure 9 NTC suction temperature 10 digital input 1 configured to enable control 11 free contact up to 230 Vac 12__ solenoid valve 13 alarm signal O Note connect the valve cable shield to the spade connector the use of the driver for the superheat control requires the use of the evaporation pressure probe S1 and the suction temperature probe S2 which will be fitted after the evaporator and digital input 1 2 to enable control As an alternative to digital input 1 2 control can be enabled via remote signal tLAN pLAN RS485 For the positioning of t
122. where the flow of R404A or other refrigerant in an exchanger acting as the CO condenser needs to be controlled perturbated cabinet cold room or air conditioner chiller refer to units that momentarily or permanently operate with swinging condensing or evaporation pressure Auxiliary control features the following settings Parameter description Def CONFIGURATION Auxiliary control Disabled Disabled High condensing temperature protection on S3 probe Modulating thermostat on S4 probe Backup probes on 53 amp S4 Tab 5 b A Important the High condensing temperature protection and Modulating thermostat auxiliary settings can only be enabled if the main control is also superheat control with settings 1 to 10 and 17 18 On the other hand the Backup probes on S3 and S4 auxiliary control can be activated once the corresponding probes have been connected only for settings from 1 to 18 The following paragraphs explain all the types of control that can be set on EVD evolution EVD evolution 0300005EN rel 3 0 18 06 2010 CAREL 5 CONTROL 5 2 Superheat control The primary purpose of the electronic valve is ensure that the flow rate of refrigerant that flows through the nozzle corresponds to the flow rate required by the compressor In this way the evaporation process will take place along the entire length of the evaporator and there will be no liquid at the outlet and co
123. work address using the display f a pLAN tLAN or Modbus driver is used connected to a pCO family controller the setup parameters will not need to be set and confirmed n fact the application running on the pCO will manage the correct values based on the unit controlled Consequently simply set the pLAN LAN or Modbus address for the driver as required by the application on the pCO and after a few seconds communication will commence between the two instruments and the driver automatically be enabled for control The main screen will shown on the display which can then be removed and control will be able to commence when requested by the pCO controller or digital input DI1 DI2 If there is no communication between the pCO and the driver see the paragraph LAN error alarm the driver will be able to continue control based on the status of digital input DI1 DI2 See par 6 3 15 4 2 Guided commissioning procedure display After having fitted the display Configurtion Network address 195 2D Prg Esc oy the first parameter is displayed network address press Enter to move to the value of the parameter press UP DOWN to modify the value Configurtion Network address IN Prg Esc t press UP DOWN to move to the next parameter refrigerant press Enter to confirm the value repeat steps 2 3 4 5 to modify the values of the parameters refrigera
124. y status via an open collector output which can be used by the pCO to generate an alarm message and notify the technical service for preventive maintenance Powered by a 12 V lead backup battery it supplies 12 Vdc to the controller for the time required to completely close the electronic valve being controlled while during normal operation ensures the battery is correctly recharged The battery code EVBAT00500 and the box code EVBATBOX 0 can be purchased separately Pee eesneeanne EVBATO0400 EVBATO0500 Fig 1 c Valve cable E2VCABS 00 IP67 Shielded cable with built in connector for connection to the valve motor The connector code E2VCONO0000 IP65 can also be purchased on its own to be wired Fig 1 d CAREL 2 INSTALLATION 2 1 DINrail assembly and dimensions 2 3 Connection diagram superheat control EVD evolution is supplied with screen printed connectors to simplify wiring The shield is connected with a spade terminal 45 o 8 LI 1T3 2 8 oa z 2 Power n connection 52 UUUUUUUUUUUUUU Tl GD EVD evolution ANNAAAAANANAAAAA Analog Digital Input Network lez _ E BE Fig 2 b Terminal Description G GO Power supply VBAT Emergency power supply L Functional earth 1 3 2 4 Stepper motor po

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