Carel EVD evolution User Manual
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Carel EVD evolution User Manual

Carel EVD evolution User Manual

Electronic expansion valve driver
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Summary of Contents for Carel EVD evolution

  • Page 2 EVD evolution electronic expansion valve driver User manual NO POWER & SIGNAL CABLES TOGETHER READ CAREFULLY IN THE TEXT! I n t e g r a t e d C o n t r o l S o l u t i o n s & E n e r g y S a v i n g s...
  • Page 4 The technical specifi cations shown in the manual may be changed without cables in the same conduits. prior warning. NO POWER The liability of CAREL in relation to its products is specifi ed in the CAREL general & SIGNAL contract conditions, available on the website www.carel.com and/or by CABLES specifi c agreements with customers;...

  • Page 6: Table Of Contents

    6.5 Advanced control status ................30 7. PROTECTORS 7.1 Protectors ......................32 8. PARAMETERS TABLE 8.1 Unit of measure.....................39 8.2 Variables accessible via serial connection ..........40 8.3 Variables used based on the type of control ......... 41 “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...

  • Page 8: Introduction

    Another possibility involves operation as a simple positioner with 4 to 20 Scroll compressors. This function is only available on the controllers for mA or 0 to 10 Vdc analogue input signal. EVD evolution comes with a LED CAREL valves;...
  • Page 9 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 confi gure and program the driver.

  • Page 10: Installation

    2. INSTALLATION 2.1 DIN rail 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. CAREL E Power Supply V connection Relay evolution...

  • Page 11: Installation

    2.5 Valve operation in parallel and Fig. 2.d complementary mode EVD evolution can control two CAREL valves connected together Case 2: multiple drivers connected in a network powered by diff erent (see paragraph 4.2), in parallel mode, with identical behaviour, or in transformers (G0 not connected to earth).

  • Page 12: Shared Pressure Probe

    • the serial port can be used for confi guration with the VPM program and for updating the driver fi rmware, downloadable from http://ksa.carel.com; • to save time, up to 8 EVD evolution drivers can be connected to the 2.7 Connecting the USB-tLAN converter computer, updating the fi rmware at the same time (each driver must have a diff erent network address).

  • Page 13: Show Electrical Connections (Display)

    Connect all the shields of the probe cables to the earth spade. blue confi guration/supervision computer digital input 2 confi gured to signal discharged battery Note: for the confi guration of the digital inputs see par. 6.3. “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...

  • Page 14: User Interface

    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 confi guration and programming operations on the driver. “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...

  • Page 15: Display Mode (Display)

    • if no button is pressed, after 5 min the display automatically returns to the standard mode; • to set a negative value move to the left-most digit and press Up/Down. “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...

  • Page 16: Commissioning

    Important: for 24 Vdc power supply, at the end of the guided commissioning procedure, to start control set “Power supply mode” parameter=1, otherwise the valve remains in the closed position. See paragraph 6.1. “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...
  • Page 17 (from bars to psi), the driver automatically updates in limits Tab. 4.f 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 Important: selected in the service menu.

  • Page 18: Checks After Commissioning

    • set, if 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...

  • Page 19: Control

    1 to 18 The following paragraphs explain all the types of control that can be set on EVD evolution. Fig. 5.a “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...

  • Page 20: Adaptive Control And Autotuning

    T (integration time), the more intense the action 1) use the parameters recommended by CAREL to control the diff erent will be. The integration time, in summary, represents the intensity of units based on the values available for the “Main control”...

  • Page 21: Control With Emerson Climate Digital Scroll™ Compressor

    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 Autotuning Digital scroll compressors.

  • Page 22: Control With Siam Anb Scroll Compressor

    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 Temperatura di evaporazione (C°) drivers, the driver must be connected to a CAREL pCO programmable Evaporation temperature (C°)

  • Page 23: Advanced Regulation

    Hot gas bypass pressure set point barg (290) (2900) (psig) PID proport. gain PID integration time 1000 PID derivative time Fig. 5.e Tab. 5.n Key: Solenoid valve Evaporator Thermostatic expasnion valve EV Electronic valve “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...
  • Page 24 S, which heats it back to the set point (reheating). Fig. 5.i Key: Compressor Thermostatic expasnion valve GC Gas cooler Electronic valve Evaporator IHE Inside heat exchanger Solenoid valve For the wiring, see paragraph 2.11 “General connection diagram”. “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...

  • Page 25: Auxiliary Control

    Protectors), no valve unblock procedure and no active or in standby. auxiliary control. I/O expander for pCO The EVD Evolution driver is connected to the pCO programmable controller via LAN, transferring the probe readings quickly and without regulator evolution fi ltering.
  • Page 26 S4, located in a similar position to the one used for the traditional temperature control of the cabinet. In practice, the close the controlled temperature gets to the set point, the more the control “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...
  • Page 27 Fig. 5.p Key: Compressor EEV Electronic expansion valve Condenser Solenoid valve Liquid receiver Evaporator Dewatering fi lter Pressure probe (transducer) Liquid indicator Temperature probe For the wiring, see paragraph 2.11 “General connection diagram”. “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...

  • Page 28: Functions

    6. FUNCTIONS 6.1 Power supply mode Parameter/description Def. EVD evolution can be powered at 24 Vac or 24 Vdc. In the event of direct CONFIGURATION current power supply, after completing the commissioning procedure, to Probe S2: CAREL NTC start control set “Power supply mode” parameter=1.

  • Page 29: Control Status

    5= Reversed alarm relay (closed in case of alarm); 6= Valve status connected to the battery charge module for EVD evolution, EVBAT00400, relay (open if valve is closed) the controller signals discharged or faulty batteries, so as to generate an alarm message and warn the service technicians that maintenance is Tab.
  • Page 30 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%). “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...

  • Page 31: Advanced Control Status

    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. 3.1 - 25.07.2011...
  • Page 32 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. “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...

  • Page 33: Protectors

    Low superheat alarm timeout 18000 it would be useless. As an initial approximation it can be set to a value (LowSH) (0= alarm DISABLED) exactly half-way between the two limits indicated; Tab. 7.b “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...
  • Page 34 When the evaporation temperature rises above the MOP threshold, the (0= alarm DISABLED) system enters MOP status, superheat control is interrupted to allow the Tab. 7.f pressure to be controlled, and the valve closes slowly, trying to limit the evaporation temperature. “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...
  • Page 35 • the closing of the valve will be limited if this causes an excessive decrease in the evaporation temperature. “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...

  • Page 36: Parameters Table

    18= AC or chiller with Digital Scroll compressor 19= AC/chiller with SIAM ANB compressor (*) 20= superheat regulation with 2 temperature probes 21= I/O expander for pCO (*)= only for controls for CAREL valves “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...
  • Page 37 17= CO gas cooler pressure set point 18= S1 probe measurement 19= S2 probe measurement 20= S3 probe measurement 21= S4 probe measurement 22= 4-20 mA input value 23= 0-10 V input value “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...
  • Page 38 Valve opening at start-up Valve opened in standby (0=disabled=valve closed; 1=enabled = valve open 25%) start-up delay after defrost Pre-position time 18000 Hot gas bypass temperature set point -60 (-76) 200 (392) °C (°F) “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...
  • Page 39 EEV nominal current EEV holding current EEV duty cycle EEV opening synchroniz. EEV closing synchroniz. Tab. 8.a * User: A= Service (installer), C= Manufacturer. **Type of variable: A= analogue, D= digital, I= integer “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...

  • Page 40: Unit Of Measure

    (°C, K, barg); • imperial system (°F, psig). Important: the drivers EVD evolution-pLAN (code EVD000E1* and EVD0000E4*), connected in pLAN to a pCO controller, do not manage the change of the unit of measure. Note: the unit of measure K relate to degrees Kelvin adopted for measuring the superheat and the related parameters.

  • Page 41: Variables Accessible Via Serial Connection

    (psig). Type of variable: A= analogue, D= digital, I= 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. 3.1 - 25.07.2011...

  • Page 42: Variables Used Based On The Type Of Control

    • 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. “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...

  • Page 43: Alarms

    Low suction Threshold and ALARM fl ashing Depends on automatic No eff ect Check the threshold and timeout temperature timeout exceeded confi guration parameters. parameter “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...

  • Page 44: Alarm Relay Confi Guration

    S3 alarm MAX pressure (S3_ S3_AL_MIN 200 (2900) barg AL_MAX) (psig) S4 alarm MIN temp. (S4_AL_ S4_AL_MAX °C/°F MIN) S4 alarm MAX temp. (S4_AL_ 105 S4_AL_MIN 200 (392) °C (°F) MAX) Tab. 9.c “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...

  • Page 45: Control Alarms

    If the alarm timeout is set to 0 s, the alarm is disabled. The alarm is reset automatically, with a fi xed diff erential of 3°C above the activation threshold. “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...

  • Page 46: Lan Error Alarm

    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, it will start with “current cooling capacity”= 100% “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...

  • Page 47: Troubleshooting

    Apply a “soft start” technique, activating the utilities one at a time or in small groups. If or extreme transitory conditions at start-up this is not possible, decrease the values of the MOP thresholds on all the utilities. (for cabinets only). “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...
  • Page 48 Check the connection of the digital input. Check that when the control signal is sent cabinets only) does not start control and the valve that the input is closed correctly. Check that the driver is in stand-alone mode. remains closed Tab. 10.a “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...

  • Page 49: Technical Specifications

    6 mm in air, 8 mm on surface; 3750 V insulation other outputs Motor 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= 50 m Digital input connection Digital input to be activated from voltage-free contact or transistor to GND.

  • Page 50: Appendix: Vpm (Visual Parameter Manager)

    Then the user can choose to: allowing the changes relating to the application to be made. directly access to the list of parameters for the EVD evolution saved to 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.

  • Page 51: Copying The Setup

    USB/tLAN converter, which is connected to the device being programmed (see paragraph 2.5 for the connection diagram). The fi rmware can be downloaded from http://ksa.carel.com. See the VPM On-line help. “EVD evolution” +0300005EN - rel. 3.1 - 25.07.2011...
  • Page 53 Agenzia / Agency: 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...

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