Specifications

50 RK0YG302 © Danfoss 05/2007
EKC 301
EKC 301
Application
The controller is a simple thermostat regulator in which some
refrigeration-technical functions have been integrated so that it
can replace a link-up of a group of thermostats and timers.
Advantages
• One electronic controller is able to replace several traditional
controllers and defrost clocks
• Temperatures, times, operating conditions, parameter codes and
alarm and fault codes can be read from the display
• Three LEDs indicate the actual condition of the system:
- refrigeration
- defrost
- fan running
• Easy to re-establish factory setting
• In the event of error function, the actual parameter code can be
displayed
• All alarms are indicated bya the three LEDs fashing at once
• Easy to install data communication at a later date
Functions
controller comes in several versions with a growing number
of functions - from the simple one with just one relay to more
advanced versions with three relays. All versions are furthermore
available with an alarm function. The number of relays will then be
increased by one.
The relays are used for controlling:
- compressor
- fan
- defrost
- alarm
One of the connections to the controller is a digital input.
This input will register the position of a connected switch and
depending on the functions you want to use, it will work, as
follows:
- activate a door alarm if the door remains open for longer than
allowed
- start a defrost
- or transmit the signal to the data communication
Accessories
The controller can be extended by one insertion module if the
application warrants it.
The controller comes prepared with plug and terminals, so all you
have to do is to push the module into place.
If you want to change the periodical defrost, so
that it can be performed at specic times of the
day, a clock module may be tted.
Up to six defrost cycles per day can now be set.
The module is provided with battery backup.
(Type = EKA 172)
If it is required that operation is to take place
from a PC, a data communication module must
be placed in the controller.
Two types of insertion modules for data
communication can be had - they are LON
modules with FFT10 interface or RS 485
interface.
Refrigeration appliance controls