Relay; General Description - Emerson Dixell IEV12D Installing And Operating Instructions

o3 : circuit 1 defrosting - active by an open contact
c3 : circuit 1 defrosting - active by a closed contact
o4 : call to adjust circuit 2 - active by an open contact
c4 : call to adjust circuit 2 - active by a closed contact
o5 : circuit 2 cooling/heating function - active by an open contact
c5 : circuit 2 cooling/heating function - active by a closed contact
o6 : circuit 2 defrosting - active by an open contact
c6 : circuit 2 defrosting - active by a closed contact
Only when the device is running in Std-alone mode, are the functions of the digital inputs considered.

6. Relay

The device has 2 relays for alarm signalling, that can be configured via parameters Ec35 and
Ec36 with following functions:
0= not configured
1= actives for probe alarm circuit 1
2= actives for MOP, LOP and probe alarm circuit 1
3= actives for high superheating, low superheating and probe alarm circuit 1
4= actives for high superheating, low superheating, MOP, LOP and probe alarm circuit 1
5= actives for probe alarm circuit 2
6= actives for MOP, LOP and probe alarm circuit 2
7= actives for high superheating, low superheating and probe alarm circuit 2
8= actives for high superheating, low superheating, MOP, LOP and probe alarm circuit 2

7. General description

There are 2 different configurations of IEV device:
•
Ec1=0 Std-alone operation mode
This operation mode adjusts the superheating according to the reading of the evaporation
pressure and suction temperature. 4 digital inputs are available to enable the adjustment and
to select the summer or winter mode.
•
Ec1=1 LAN operation mode
This operation mode can only be used in conjunction with an Ichill 200 EVO controller. The
superheating is adjusted according to the reading of the evaporation pressure and the
suction temperature and the Ichill provides information concerning the status of the machine
via the LAN to the valve, which will be used by the valve for the adjustment.
The adjustment of the IEV valve driver is based on the superheating value, which is calculated as the
difference between the temperature of the superheated gas (Ta), measured by the temperature probe,
and the evaporation temperature (Tb), measured by the evaporation transducer and subsequently
converted into temperature using the tables of the relative gas.
1592026270 IEV12-14D GB r.1.0 21.02.2019
SH = Ta- Tb
IEV 22/56