Specifications

106 RK0YG302 © Danfoss 05/2007
EKC 514B1
EKC 514B1
Data communication
Application
The controller is a complete control unit for refrigeration appli-
ances with integrated refrigeration-technical functions capable of
replacing a setup of thermostats and timers.
It contains:
• Evaporator control with adaptive regulation
• Changeover between two thermostat functions
• Relays for operating of:
- Light
- Compressor
- Defrost
- Fan
- Rail heat or compressor no. 2.
It is recommended that the controller be equipped with data
communication as several of the functions can only be used in this
way.
The controller should only be used in systems where the placing of
the S1 sensor, and hence the signal reliability, has been examined
beforehand.
Operation
The controller comes without operating buttons on the front
panel, and it will require no operation once it has been set and
started up.
When the controller is operated, it can be done in one of the fol-
lowing ways:
• Connection of an external display with operating buttons
- The display will currently show measurements and settings in
the menu system
- In case of malfunction the relevant error code will be shown on
the display
- Four light-emitting diodes will show the system’s actual func-
tion:
› refrigeration
› power for the AKV valve
› defrost
› fan operating
› when there is an alarm the three LED’s will ash
• Data communication
The controller can be hooked up with other products in the
series of ADAP-KOOL® refrigeration controls. The operation,
monitoring and data collection can then be performed from a
PC – either on site or at a service company.
Customer display
If the temperature in the appliance is to be visible to, say, custom-
ers, a display without control knobs may be mounted instead of
the display with control knobs.
Digital inputs
One digital input can be dened for following applications:
• Cleaning of appliance
• Door alarm with delay
• Defrost start
• Night operation
• Start/stop of regulation
• Joint defrost start/stop with a master/slave function
Inject ON function
The expansion valve is closed when the signal on the 230 V input
is removed. In this way it is ensured that the expansion valve will
not charge the evaporator if the compressor is prevented from
starting. This signal can also be received via data communication.
Light function
The light in the refrigeration appliance can be regulated. Periods
with the light on may follow the controller’s day/night period or it
may follow a timetable via the data communication.
Alarms
There is no alarm relay in the controller. All alarms have to be
transmitted via data communication.
Data communication
The controller has been prepared for data communication with
either:
• LON RS 485
• LON FTT 10 or
• Ethernet
A module with the required communication has to be mounted in
the controller.