© Danfoss A/S (DCS-IMCGPD/sw), 2015-03
DKRCC.PS.R1.A3.02 / 520H9752
9
Manual
Electronic superheat controller, type EKC 312
Function
Param.
Min.
Max.
Fac.
setting
Manual control of the valve’s opening degree.
The function can only be operated if ”o18” has
been set
o45
0 %
100 %
0
Selection of loop ctrl:
1=Normal
2=double loop
o56
1
2
1
Service
Read status of input DI
u10
on/off
Temperature at S2 sensor
u20
°C
Superheat
u21
K
Superheat reference
u22
K
Read AKV valve’s opening degree
u24
%
Read evaporating pressure
u25
bar
Read evaporating temperature
u26
°C
Temperature at S4 sensor
u27
°C
Read signal at pressure transmitter input
u29
mA
*) This setting will only be possible if a data communication module has been
installed in the controller.
The controller can give the following messages
E1
Error message
Fault in controller
E15
Cut-out S2 sensor
E16
Shortcircuited S2 sensor
E17
Cut-out S4 sensor
E18
Shortcircuited S4 sensor
E20
The input signal on terminals 14-15 is outside the range
(P0 signal)
A11
Alarm message
No refrigerant has been selected
A43
Check the supply voltage to the step motor
Operating status
(Measurement)
The controller goes through some regulating
situations where it is just waiting for the next
point of the regulation. To make these "why
is nothing happening" situations visible, you
can see an operating status on the display.
Push briefly (1 s) the upper button. If there is
a status code, it will be shown on the display.
The individual status codes have the following
meanings.
Ctrl. state:
(Shown in all menu
displays)
Normal regulation
S0
0
Refrigeration stopped by main switch.
Either with r12 or a DI-input
S10
10
No refrigerant selected
S26
26
Factory setting
If you need to return to the factory-set values, it can be done in this way:
- Cut out the supply voltage to the controller
- Keep both buttons depressed at the same time as you recon nect the
supply voltage
Menu survey