DKRCI.PS.RP0.D2.02 | 520H7653 | 2
Introduction
Functions
• Regulation of superheat
• Temperature control
• MOP function
• ON/OFF input for start/stop of regulation
• Input signal that can displace the superheat reference or the
temperature reference
• Alarm if the set alarm limits are exceeded
• Relay output for solenoid valve
• PID regulation
• Output signal following the temperature showing in the display
System
The superheat in the evaporator is controlled by one pressure
transmitter P and one temperature sensor S2.
The valve can be one of the following types:
• ICM
• AKV (AKVA)
ICM is an electronically, directly run engine valve, controlled by an
ICAD type actuator. It is used with a solenoid valve in the liquid
line.
TQ valve
The controller can also control a TQ type valve. This valve has
been discontinued from the product range, but the settings are
still described in this manual.
AKV is a pulsating valve.
Where the AKV valve is used it also functions as solenoid valve.
Temperature control is performed based on a signal from tem-
perature sensor S3 which is placed in the air current before the
evaporator. Temperature control is in the shape of an ON/OFF
thermostat that shuts o the liquid ow in the liquid line.
Water chiller application Air cooler application
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