Danfoss AK-PC 781 User Manual

8 Menu operation RC8CE202 © Danfoss 03/2013 AK-PC 781 Version 4.1x
Rec. Status 0: O
1: Standby
2: Normal
3: Emergency operation
4: Manual
Prec Bar Read pressure of receiver
Vrec OD% Read opening degree of receiver valve
Settings Main switch Main switch: ON: Regulation
OFF: Controller stopped
HP control ManAut Control of high pressure valve: 1=automatic, 2=manual override
Vhp manual OD% Manual setting of opening degree of high pressure valve
Pgc min. Bar Setting of gas coolers min. pressure
Pgc max. Bar Setting of gas coolers max. pressure
Extra capacity os Set requested pressure increase if the "extra cooling capacity" is activated
dT Subcool K Set requested sub cooling in the sub critical range
Rec. Control ManAut Control of receiver valve: 1=automatic, 2=manual override
Rec. Manual OD% Manual setting of opening degree of the receiver valve
Prec setpoint Bar Set requested receiver pressure
Oil management
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=O. 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
Rec. pressure Actual pressure in receiver
Rec. pres. buildup Status of oil separator
Settings Main switch Main switch: ON: Regulation
OFF: Controller stopped
Interval time Time between breaks. (Simple oil equalisation)
Equalisation time Duration of oil equalisation (Simple oil equalisation)
Rec. pres. cutin Bar Reciever pressure, which to cutin for the oil
Rec.pres.cutout Bar Receiver pressure, which to cutout for the oil
High alarm limit Bar Alarm limit high
Low alarm limit Bar Alarm limit low
High alarm delay m Delay time for high pressure alarm
Low alarm delay m Delay time for low pressure alarm
Lvl. alarm delay s Delay time for Level alarm
Condenser capacity 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)

Danfoss AK-PC 781 Specifications

General

Brand	Danfoss
Model	AK-PC 781
Category	Controller
Language	English