Danfoss EKC 312, User Manual, Page: 7 / 12

© Danfoss A/S (DCS-IMCGPD/sw), 2015-03 DKRCC.PS.R1.A3.02 / 520H9752 7
Manual Electronic superheat controller, type EKC 312
Function Parameter Parameter by operation via data communication
Refrigerant setting
Before refrigeration can be started, the refrigerant must be defined.
You can select the following refrigerants:
1=R12. 2=R22. 3=R134a. 4=R502. 5=R717. 6=R13. 7=R13b1.
8=R23. 9=R500. 10=R503. 11=R114. 12=R142b. 13=User defined.
14=R32. 15=R227. 16=R401A. 17=R507. 18=R402A. 19=R404A.
20=R407C. 21=R407A. 22=R407B. 23=R410A. 24=R170. 25=R290.
26=R600. 27=R600a. 28=R744. 29=R1270.
(Warning: Wrong selection of refrigerant may cause damage to the
compressor).
o30 Refrigerant
Service Service
A number of controller values can be printed for use in a service
situation.
Read status of input DI (start/stop input).
u10 DI
Read the temperature at the S2 sensor.
u20 S2 temp.
Read superheat.
u21 SH
Read the control’s actual superheat reference.
u22 SH ref.
Read the valve’s opening degree.
u24 OD%
Read evaporating pressure.
u25 Evap. pres. Pe
Read evaporating temperature.
u26 Evap.Press.Te
Read the temperature at the S4 sensor. u27 S4 temp.
Read value of current signal from pressure transmitter (AIB).
u29 AI B mA
-- DO1 Alarm
Read status of alarm relay
For Danfoss only
Start-up time for safety signal
If the controller does not obtain a reliable signal within this period
of time the con-troller will in other ways try to establish a stable
signal. (A too high value may result in a flooded eaporator).
The value should only be changed by specially trained staff.
n15 StartUp time
Signal safety during start-up
The control function uses the value as start value for the valve’s
opening degree at each thermostat cutin. By adaptive control the
controller continuously calculates a new value.
The value should only be changed by specially trained staff.
n17 Start OD%
Operating status
The controller’s operating status can be called forth by a brief (1s)
activation of the upper button. If a status code exists it will be
shown. (Status codes have lower priority than alarm codes. This
means that status codes cannot be seen if there is an active alarm
code. The status code have the following meaning:
EKC State
(0 = regulation)
S10: Refrigeration stopped by the internal or external start/ stop.
10
S26: No refrigerant selected.
26
Survey of functions