WURM EEV-Modul Product information

Brand
WURM
Model
EEV-Modul
Type
Product information

WURM EEV-Modul

The WURM EEV-Modul is a control module for electronic expansion valves. It features an intuitive interface and a variety of functions for controlling and monitoring the expansion valve.

The WURM EEV-Modul is easy to install and can be used with a variety of electronic expansion valves. It features one digital switching channel and one analog voltage output, as well as one input for a temperature probe and one input for a pressure transmitter. This allows the WURM EEV-Modul to control the expansion valve based on a variety of parameters, including temperature, pressure, and flow rate.

WURM EEV-Modul

The WURM EEV-Modul is a control module for electronic expansion valves. It features an intuitive interface and a variety of functions for controlling and monitoring the expansion valve.

The WURM EEV-Modul is easy to install and can be used with a variety of electronic expansion valves. It features one digital switching channel and one analog voltage output, as well as one input for a temperature probe and one input for a pressure transmitter. This allows the WURM EEV-Modul to control the expansion valve based on a variety of parameters, including temperature, pressure, and flow rate.

EEV Module
Control module for electronic expansion valves
EEV_2010-07_EN Subject to technical changes Page 1 of 8
Front view
Features
No parameters need to be set
1 digital switching channel and 1 analogue voltage output
1 input for one temperature probe and 1 input for a pressure
transmitter
Control via date interface of a Frigoentry cold location controller
EEV Module
Control module for electronic expansion valves
Page 2 of 8 Subject to technical changes EEV_2010-07_EN
Contents
1 Circuit diagram ...........................................................................................................2
2 Function ......................................................................................................................2
3 Commissioning...........................................................................................................3
3.1 Connection diagram ..........................................................................................3
4 Monitoring and emergency program........................................................................3
5 Mounting .....................................................................................................................4
5.1 Mounting the EEV module.................................................................................4
5.2 Mounting the temperature probe.......................................................................4
6 Technical data.............................................................................................................5
7 Software Revisions and Validity of Documentation................................................5
1 Circuit diagram
TxD
LEDs RxD
EEV
LED Status Significance
TxD Fast flashing EEV module transmitting data to the cold location controller.
RXD Fast flashing EEV module receiving data from cold location controller.
EEV Illuminated EEV being controlled via NO contact on terminal 15.
2 Function
The EEV module communicates with an appropriately equipped Frigoentry cold location
controller via the EEV-Data interface. The measured values of the pressure transmitter and
temperature probe are transmitted to the cold location controller. The adjustment signals that
the EEV module receives from the cold location controller are output on the analogue and
digital outputs of the EEV module in order to control electronic expansion valves.
EEV Module
Control module for electronic expansion valves
EEV_2010-07_EN Subject to technical changes Page 3 of 8
3 Commissioning
Check all of the wiring before commissioning!
The parameter that defines the refrigerant being used is set in the cold location controller.
3.1 Connection diagram
4 Monitoring and emergency program
If communication to a cold location controller fails, then the outputs are controlled with an
emergency setpoint. This is set on the cold location controller.
EEV Module
Control module for electronic expansion valves
Page 4 of 8 Subject to technical changes EEV_2010-07_EN
5 Mounting
5.1 Mounting the EEV module
The device is designed for profile rail mounting. The housings are standard size and are also
suitable for installation in installation boxes. They can be positioned immediately next to one
another and without gaps
Fig.: Dimensions of the EEV module housing
5.2 Mounting the temperature probe
To ensure reliable operation of the electronic expansion
valve, it is important to take special care when mounting
the suction gas temperature probe.
Note:
In general, a suction gas temperature probe is installed
in exactly the same manner as the sensor cartridges of
thermostatic valves. For deep-freeze cold locations,
watertight insulation of the probe is absolutely essential.
There must be no formation of pads of ice on or around
the probe.
Never fasten the suction gas temperature probe with
cable straps. Fasten it with a copper strap in the
appropriate clock position. The clock position depends
on the tube diameter (see fig.: Installing the suction gas
probe).
Ensure that the probe is fastened close to the
evaporator, but not in a channel where refrigerant could
accumulate.
Fig.: Installing the suction gas temperature
probe
Probe extension: We recommend the use of shielded cables for probe extension.
Cable length Cross section
up to 100 m 0.75 mm²
up to 400 m 1.5 mm²
EEV Module
Control module for electronic expansion valves
EEV_2010-07_EN Subject to technical changes Page 5 of 8
6 Technical data
Supply voltage 230V~ +10% / -15%, approx. 2.6VA
Temperature probe 1 x TRK277 /EEV-ST
Analogue input 4…20mA
Semiconductor relay output 1 x 230V~, 12…60W, integrated semiconductor protection (no isolator),
observe minimum power!
Analogue output 0...10V=, tied to potential, capable of bearing max. 1mA
Central unit Single-chip microcomputer
Monitoring system Monitoring of the communication
Microcomputer self-monitoring
Communication Serial interface
Dimensions (WxHxD) 53 x 90 x 58 mm³, DIN 43880
Mounting Mounting rail DIN EN 50022 35x15
Ambient temperature 0...+50°C (operation) / -25...+70°C storage
Weight Approx. 300 g
CE conformity
EC conformity according to
- 2004/108/EC (EMC Directive)
- 2006/95/EC (Low Voltage Directive)
RoHS
Validity from Version 1.1
7 Software Revisions and Validity of Documentation
Any software versions not listed are special solutions for individual projects and are not
documented in this description in detail.
The general technical guidelines must be observed.
The validity of this document automatically expires upon publication of a new technical
description.
Software version Function expansion Page
V1.1 2010-05 Base documentation
EEV Module
Control module for electronic expansion valves
Page 6 of 8 Subject to technical changes EEV_2010-07_EN
EEV Module
Control module for electronic expansion valves
EEV_2010-07_EN Subject to technical changes Page 7 of 8
EEV Module
Control module for electronic expansion valves
Page 8 of 8 Subject to technical changes EEV_2010-07_EN
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WURM EEV-Modul Product information

Brand
WURM
Model
EEV-Modul
Type
Product information

WURM EEV-Modul

The WURM EEV-Modul is a control module for electronic expansion valves. It features an intuitive interface and a variety of functions for controlling and monitoring the expansion valve.

The WURM EEV-Modul is easy to install and can be used with a variety of electronic expansion valves. It features one digital switching channel and one analog voltage output, as well as one input for a temperature probe and one input for a pressure transmitter. This allows the WURM EEV-Modul to control the expansion valve based on a variety of parameters, including temperature, pressure, and flow rate.

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