Specifications

56 RK0YG302 © Danfoss 05/2007 EKC 202
EKC 202
Application
• The controller is used for temperature control refrigeration
appliances and cold room in supermarkets
• Control of defrost, fans, alarm and light
• For front panel mounting
Advantages
• Integrated refrigeration-technical functions
• Defrost on demand in 1:1 systems
• Buttons and seal imbedded in the front
• IP 65 enclosure from the front panel
• Digital input for either:
- Door contact function with alarm
- Defrost start
- Start/stop of regulation
- Night operation
- Change-over between two temperature reference
- Case cleaning function
• Instant programming via programming key
• HACCP
Factory calibration that will guarantee a better measuring
accuracy than stated in the standard EN 441-13 without
subsequent calibration (Pt 1000 ohm sensor)
Extra module
• The controller can afterwards be tted with an insertion module
if the application requires it.
The controller has been prepared with plug, so the module
simply has to be pushed in
- Battery and buzzer module
The module guarantees voltage to the controller if the supply
voltage should drop out for more than four hours. The clock
function can thus be protected during a power failure.
- Data communication
If you require operation from a PC, a data communication
module has to be placed in the controller.
- Coordinated defrost via data communication
Regulering
The controller contains a temperature control where the signal
can be received from one temperature sensor.
The sensor is placed in the cold air ow after the evaporator or in
the warm air ow just before the evaporator.
The controller controls the defrost with either natural defrost or
electric defrost. Renewed cutin after defrost can be accomplished
based on time or temperature.
A measurement of the defrost temperature can be obtained
directly through the use of a defrost sensor.
Two to four relays will cut the required functions in and out – the
application determines which:
• Refrigeration (compressor or solenoid valve)
• Defrost
• Fan
• Alarm
• Light
The dierent applications are described on next page.