AK-PC 781 Version 4.1x
Menu operation RC8CE202 © Danfoss 03/2013
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Pgc Bar
Actual gas cooler pressure
Pgc reference Bar
Actual reference for gas cooler pressure
Sd discharge gas °C
Actual discharge gas temperature
Sgc °C
Actual temperature at outlet from the gas cooler
Shr2 °C
(ONLY at CO2). Temperature at sensor Shr2
Stw2 °C
(ONLY at CO2). Temperature at sensor Stw2
Status heat circuit
(ONLY at CO2). 0=off. 1=waiting. 2=started. 3=standard. 4=variable offset
5=max recovery. 6=stopped. 7=error.
Tw Stw8 °C
(ONLY at CO2). Temperature at sensor Stw8. Tap water
Tw Status
(ONLY at CO2). 0=off. 1=waiting. 2=started. 3=hot tap water. 5=manual.
6= stopped. 7=error. 8=Flow error. 9=sensor error. 10=boiling.
Tw enable
(ONLY at CO2). Readout about tap water circuit can be activated automatically
Hr Shr8 °C
(ONLY at CO2).Temperature at sensor Shr8. Heat circuit
Hr Status
(ONLY at CO2). 0=off. 1=waiting. 2=started. 3=heat circuit. 5=manual.
6= stopped. 7=error. 8=Flow error. 9=sensor error. 10=boiling.
Hr enable
(ONLY at CO2). Readout about heat circuit can be activated automatically
HR thermostat temp°C
(Not at CO2). Actual temperature at sensor for heat recovery function
Heat recovery status
(Not at CO2). Status on heat recovery function (on/off)
Settings
Main switch
Main switch:
ON: Regulation
OFF: Controller stopped
Tw setpoint °C
(ONLY at CO2). Set point for tap water temperature
Hr setpoint °C
(ONLY at CO2). Set point for heat circuit temperature
Pgc HR max. offset
(ONLY at CO2). Displacement pressure of max. signal
Pgc HR min. Bar
(ONLY at CO2). Set point at min. signal
Heat recovery SP °C
(Not at CO2). Reference for condenser pressure when heat recovery is on
HR temp. cutin °C
(Not at CO2). Temperature value when thermostat switch to heat recovery
HR temp. cutout °C
(Not at CO2). Temperature value when thermostat switch off the heat recovery
Alarm priorities
Measurements
AK error
When “ON”, the controller is in alarm condition.
Comp. ctrl. temp °C
Actual temperature for control sensor (Po or S4)
Comp. ctrl. ref. °C
Actual reference temp. for compressor capacity
(incl. external reference signal, if any)
Compressor cap. %
Cut-in compressor capacity in % (of total capacity)
Request Comp. Cap %
Reference for compressor capacity (deviations may be due to time delays)
P0 °C
Suction pressure in °C. (Measured with the pressure transmitter)
Ss Suction gas °C
Actual suction gas temperature
Cond. ctrl. temp °C
Actual temperature for control sensor (Pc or S7)
Cond. ctrl. ref. °C
Actual reference temp. for condenser capacity
(incl. external contributions, if any)
Cond. cap. %
Cut-in condenser capacity in % (of total capacity)
Request Cond. cap %
Reference for condenser capacity
Pc Bar
Condensing pressure (measured with the pressure transmitter)
Tc °C
Condensing pressure in °C. (measured with the pressure transmitter)
Gc status
Actual gas cooler operation:
0=Off. 1=Standby. 2=Max COP operation. 3=Heat recovery. 4=Extra capacity.
5=Manual control.
Pgc Bar
Actual gas cooler pressure
Pgc reference Bar
Actual reference for gas cooler pressure
Sd discharge gas °C
Actual discharge gas temperature
Sgc °C
Actual temperature at outlet from the gas cooler
Settings
Main switch
Main switch:
ON: Regulation
OFF: Controller stopped
The alarm priority of the following alarms can be changed:
High priority is defined with setting = 1
Medium priority is defined with setting = 2
Low priority is defined with setting = 3
Log only = 4
Overriding the alarms is defined with setting = 0
Main Switch
0/1/2/3/4
Low P0
0/1/2/3/4