8 Service Guide RC8BV402 © Danfoss 2016-02 AK-CH 650 Version 2.0x
Defrost control
Measurements AK error When “ON”, the controller is in alarm condition.
Comp. Ctrl. temp. Actual temperature for compressor control
S4 Cold brine supply Actual cold brine supply temperature measured with S4 temp. sensor
S3 Cold brine return Actual cold brine return temperature measured with S3 temp. sensor
P0 °C Suction pressure in °C. (Measured with the pressure transmitter)
Comp. ctrl. Ref. °C Actual reference temperature for compressor control
Compressor cap. % Cut-in compressor capacity in % (of total capacity)
Request Comp. Cap % Reference for compressor capacity (deviations may be due to time delays)
Cond. ctrl. temp °C Actual temperature for control sensor (Pc or S7)
S7 warm brine °C Actual warm brine temperature for S7 media sensor
(Only used if S7 sensor is selected as regulation sensor)
Pc °C Condensing pressure in °C. (measured with the pressure transmitter)
Cond. ctrl. ref. °C Actual reference temp. for condenser capacity
(incl. external reference signal, if any)
Cond. cap. % Cut-in condenser capacity in % (of total capacity)
Request Cond. cap % Reference for condenser capacity
Defrost status Current status for defrost function
Defrost temp. Current temperature of chosen defrost stop sensor
Defrost time Defrosting time for current or most recently completed defrost
Average defrost time Average defrosting time for the 10 most recent defrosts
Settings Main switch Main switch: ON: Regulation
OFF: Controller stopped
Start defrost Manual start of defrost
Stop defrost Manual stop of defrost
Defrost control Select if defrost function is required
Defrost stop sensor Select defrost stop method
0: Stop exclusively on time
1: Stop at S3 temp. With time as backup
2: Stop at S4 temp. With time as backup
Defrost stop temp. Temperature value for defrost stop (the defrost is stopped when the temperature of
the selected defrost sensor reached the set value)
Max. defrost time Max. permitted defrosting time in minutes (security time for stop using temperature)
Drip delay Delay time after defrost where compressors may not start so that the water has time
to run o the refrigeration surfaces before start of refrigeration
Comp. run at def. Select if compressors are permitted to run during defrost
Condenser capacity control
Measurements AK error When “ON”, the controller is in alarm condition.
Comp. Ctrl. temp. Actual temperature for compressor control
S4 Cold brine supply Actual cold brine supply temperature measured with S4 temp. sensor
S3 Cold brine return Actual cold brine return temperature measured with S3 temp. sensor
P0 °C Suction pressure in °C. (Measured with the pressure transmitter)
Comp. ctrl. Ref. °C Actual reference temperature for compressor control
Compressor cap. % Cut-in compressor capacity in % (of total capacity)
Request Comp. Cap % Reference for compressor capacity (deviations may be due to time delays)
Cond. ctrl. temp °C Actual temperature for control sensor (Pc or S7)
S7 warm brine °C Actual warm brine temperature for S7 media sensor
(Only used if S7 sensor is selected as regulation sensor)
Pc °C Condensing pressure in °C. (measured with the pressure transmitter)
Cond. ctrl. ref. °C Actual reference temp. for condenser capacity
(incl. external reference signal, if any)
Cond. cap. % Cut-in condenser capacity in % (of total capacity)
Request Cond. cap % Reference for condenser capacity
Condenser status 0: Power up Controller has been powered up (power supply re-connected)
1: Stopped Capacity control has been stopped (“Main switch” = OFF or
“Control mode” = OFF)
2: Manual Capacity is controlled manually (“Control mode” = MAN)
3: Alarm Capacity control is in alarm condition (f.ex. Pc Max or Sd Max)
4: Restart Capacity control is waiting for elapse of “Restart time”
5: Standby Capacity control is ready to start
10: Full loaded All capacity cutin
11: Running Capacity control is running
To Next Page
Loading...
Need help?
General
