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6 - Control
DIGITAL OUTPUTS
Variable name Type (Write/Read) Unit Description
Fan 1 R Fan 1 status (O=open,C=close)
Fan 2 R Fan 2 status (O=open,C=close)
4-way valve R 4-way status (O=open,C=close)
Pump R Pump status (O=open,C=close)
Evaporator heater R Evaporator heater (O=open,C=close)
Crankcase heater R Compressor crankcase heater (O=open,C=close)
ANALOG OUTPUTS
Variable name Type (Write/Read) Unit Description
Fans R V Actual fans speed expressed in Volt
COMPRESSOR
Variable name Type (Write/Read) Unit Description
Min. time On R sec Countdown for compressor’s minimum time on
Min. time OFF R sec Countdown for compressor’s minimum time off
INPUTS/OUTPUT
Variable name Type (Write/Read) Unit Description
Valve status Actual EEV status
Valve opening R % Actual EEV position expressed in percentage
Valve pos. R Stp Actual EEV position expressed in steps
Cooling cap. R % Actual cooling capacity request by controller
Superheat R K Superheat value
Required. cap. R % Required compressor’s capacity by controller
Actual cap. R % Actual running compressor’s capacity in perc.
Actual speed R rps Actual running compressor’s capacity in rps
Limiting R Show eventual reasons for limiting compressor
Cond. press. R bar Pressure from high pressure transducer
Cond. evap. R bar Pressure from low pressure transducer
Envelope zone R Actual zone of compressor’s envelope
Alarm countdown R Eventual countdown before alarm due to envelope limits reached
Press. diff. R bar Difference between evap. and cond. pressure
Press. ratio R Ration between evap. and cond. pressure
Low DP Al. cntdwn R sec Countdown for low delta pressure alarm at compressor’s start-up
Discharge gas temperature R °C Discharge probe temperature
Status R Status of the discharge temperature control (if enabled)
Power+ R Many informations about Power+ status of drive and compressor
(speed, current, voltage, power)
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