
pRack +040000071 rel. 1.1 - 14.10.2011
35
ENG
I/O list for each board
Digital outputs
NO1
Compressor 1
NO4
Compressor 4
NO2
Compressor 2
NO5
Fan
NO3
Compressor 3
NO6
Alarms output
Digital inputs
ID1
Suction HP pressostat
ID2
Suction LP pressostat
ID3
Compressor 1, thermal overload alarm
ID4
Compressor 1, oil diff erential alarm
ID5
Compressor 1, HP/LP alarm
ID6
Compressor 2, thermal overload alarm
ID7
Compressor 2, oil diff erential alarm
ID8
Compressor 2, HP/LP alarm
ID9
Compressor 3, thermal overload alarm
ID10
Compressor 3, oil diff erential alarm
ID11
Compressor 3, HP/LP alarm
ID12
Compressor 4, thermal overload alarm
ID15
Common fan overload
ID13
Compressor 4, oil diff erential alarm
ID16
Compressor inverter alarm
ID14
Compressor 4, HP/LP alarm
ID17
Condenser inverter alarm
Analog outputs
Y1
First compressor inverter
0...10 Vdc
Y2
Common condenser inverter
0...10 Vdc
Analog inputs
B1
Suction pressure probe
4...20 mA
-0.5...7.0 barg
B2
Condensing pressure probe
4...20 mA
0.0...30.0 barg
B3
Suction temperature probe
NTC
B4
Discharge temperature probe
HTNTC
B5 – solo linea 1
External temperature probe
NTC
Tab. 2.z
Main parameters
Parameter
Mask index
Value
Suction regulation by
Cab01/ Cbb01
PRESSURE
Suction regulation type
Cab01/ Cbb01
NEUTRAL ZONE
Suction setpoint
Cab03/ Cbb03
3.5,barg
Suction diff erential
Cab05/ Cbb05
0.3 barg
Compressors rotation type
Caf10/ Cbf10
FIFO
Refrigerant
Caf04/ Cbf04
R404A
High suction pressure alarm threshold
Cae24/ Cbe24
6.0 barg
Low suction pressure alarm threshold
Cae26/ Cbe26
0.0 barg
Condenser regulation by
Dab01 /Dbb01
PRESSURE
Condenser regulation type
Dab01 /Dbb01
PROPORTIONAL BAND
Condenser setpoint
Dab03/ Dbb03
12.0 barg
Condenser diff erential
Dab07/ Dbb07
2.0 barg
High condenser pressure alarm threshold
Dae01/ Dbe01
24.0 barg
Low condenser pressure alarm threshold
Dae03/ Dbe03
7.0 barg
Tab. 2.aa