Specifications

70 RK0YG302 © Danfoss 05/2007

Application

• The controller is used for temperature control refrigeration

appliances in supermarkets

• With many predened applications one unit will oer you many

options. Flexibility has been planned both for new installations

and for service in the refrigeration trade

Advantages

• Many applications in the same unit

• The controller has integrated refrigeration-technical functions,

so that it can replace a whole collection of thermostats and

timers

• Buttons and seal imbedded in the front

• Can control two compressors

• Easy to remount data communication

• Quick setup

• Two temperature references

• Digital inputs for various functions

• Clock function with backup

• HACCP (Hazard Analysis and Critical Control Points)

- Temperature monitoring and registration of period with too

high temperature

- Factory calibration that will guarantee a better measuring

accuracy than stated in the standard EN 441-13 without

subsequent calibration (Pt 1000 ohm sensor)

Control

The controller contains a temperature control where the signal

can be received from one or two temperature sensors.

The thermostat sensors are either placed in the cold air ow after

the evaporator, in the warm air ow just before the evaporator,

or both. A setting will determine how great an inuence the two

signals are to have on the control.

A measurement of the defrost temperature can be obtained

directly through the use of an S5 sensor or indirectly through

the use of the S4 measurement. Four relays will cut the required

functions in and out – the application determines which. The

options are the following:

• Refrigeration (compressor or relay)

• Fan

• Defrost

• Rail heat

• Alarm

• Light

• Fans for hotgas defrost

• Refrigeration 2 (compressor 2 or relay 2)

AK-CC 210