EVK204 is a digital thermostat able to control compressor, defrost (by temperature-time) and evaporator fan; a fourth relay allows to manage one of the following users:
- cabinet light
- demisting heater
- auxiliary output
- compressor 2
- alarm output
- door heater
- evaporator valve
- defrost synchronisation.
The instrument is provided with two measure inputs both for PTC and NTC probes (cabinet probe and evaporator probe) and with one digital input (door switch); a fourth input can be set to work both as measure input (display probe or condenser probe) and as digital input (multipurpose).
Some configuration parameters allow to protect the compressor against overloads, to manage the defrost according to the requirments, to set the evaporator fan operation, etc.
The HACCP function allows to store up to 3 alarms supplying information on:
- the critical value
- the alarm duration.
The HACCP alarms the instrument can store are:
- the lower temperature alarm
- the upper temperature alarm
- the door switch input alarm.
The Energy Saving function allows to change the working temperature (through the multipurpose input).
Two communication ports (available by request) allow the communication with supervision systems (via TTL, with MODBUS communication protocol) or with the programming key EVKEY (the first one) and with the remote display EVT100 (the second one).
EVK204 frontal size is 75 x 33.5 mm (W x H) and has been studied for panel mounting.
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