EKC 315A Manual RS8CS302 © Danfoss 07-2005 7
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
A number of controller values can be printed for use in a service situation
Read valve’s actuator temperature (TQ)
u04 Actuator temp.
Read reference for valve’s actuator temperaturer (TQ)
u05 Actuator Ref.
Read value of external current signal (AIA)
u06 AI A mA
Read value of transmitted current signal u08 AO mA
Read status of input DI (start/stop input) u10 DI
Read the ongoing cutin time for the thermostat or the duration of the last completed
cutin
u18 Ther. RunTime
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. temp Te
Read the temperature at the S3 sensor u27 S3 temp.
Read control reference
(Set setpoint + any contribution from external signal)
u28 Temp. ref
Read value of current signal from pressure transmitter (AIB)
u29 AI B mA
-- DO1 Alarm
Read status of alarm relay
-- DO2 Liq. Valv
Read status of relay for solenoid valve
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 individual status codes have the following meanings:
EKC State
(0 = regulation)
S10: Refrigeration stopped by the internal or external start/ stop.
10
S11: Thermostat is cutout 11
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