AK-PC 781 Version 4.1x
Menu operation RC8CE202 © Danfoss 03/2013
7
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
VSD 1 safety
Status on safety input for variable speed controller on compressor 1
ON: Alarm
OFF: No alarm
VSD 2 safety
Status on safety input for variable speed controller on compressor 2
ON: Alarm
OFF: No alarm
VSD Speed %
The present speed of the compressor motor controlled by the frequency converter
Comp. 1 Status
0: Power up
Controller has been powered up/Compressor is not used
1: Stopped
Compressor hat been stopped
2: Manual
Compressor capacity is controlled manually
3: Alarm
Compressor is in alarm condition (cut out on safety)
4: Restart
Compressor is waiting for elapse of “Recycle time”
5: Standby
Compressor is ready to start
6-10: Status_RUN_Timer
11: unloaded
12-14: Unloads cutin
15: Full loaded All capacity cutin
16: Running
Capacity control is running
Comp 2 … Status
As above for compressor no. 2 to 8
Comp 1 capacity %
Actual cut-in capacity on this compressor
Comp 2 …capacity %
As above for compressor no. 2 to 8
Comp 1 Cycles / 24 h
Number of compressor starts during the past 24 hours
Comp 2 …Cycles / 24 h
As above for compressor no. 2 to 8
Settings
Main switch
Main switch:
ON: Regulation
OFF: Controller stopped
1 Min. ON-time m
Minimum duration of ON period
2 …Min. ON-time m
As above for compressor no. 2 to 8
1 Min. OFF-time m
Minimum duration of OFF period
2 …Min. OFF-time m
As above for compressor no. 2 to 8
1 Recycle time m
Minimum period of time between two successive starts.
2 …Recycle time m
As above for compressor no. 2 to 8
1 runtime h
Compressor’s total run time in hours
2 …runtime h
As above for compressor no. 2 to 8
High pressure control
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
Shp °C
Read temperature at high pressure valve
Vhp OD%
Read opening degree of high pressure valve