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Menu operation RC8CE202 © Danfoss 03/2013
AK-PC 781 Version 4.1x
Min. tm k
tm value at minimum load.
Min. Reference °C
Min. permissible condensing pressure reference
Max. Reference °C
Max. permissible condensing pressure reference
Capacity Lim. night %
Capacity limitation during night operation
Kp
Amplification factor P/PI controller
Tn s
Integration time for PI controller
VSD Min. speed %
Minimum allowed speed before stop of Variable Speed drive (Low load condition)
VSD Start speed %
Minimum speed for start of Variable speed drive (Must be set higher than
“VSD Min. Speed %”)
Pc max limit Bar
Max. limit for condensing pressure
Pc max alarm delay m
Time delay for "Pc max alarm"
Condenser fan status
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 Compr. 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
Fan1/VSD status
Status of the Fan 1
ON: Fan is running
OFF: Fan is not running
Fan2.... status
As above for fan 2 to 8
Settings
Main switch
Main switch:
ON: Regulation
OFF: Controller stopped
Heat recovery
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 Compr. 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.
