
pRack +040000071 rel. 1.1 - 14.10.2011
31
ENG
I/O List
Digital outputs
NO1
L1-Compressor 1
NO2
L1-Compressor 2
NO3
Fan 1
NO4
Fan 2
NO5
Alarms output
NO6
L2-Compressor 1
NO7
L2-Compressor 2
Digital inputs
ID1
HP1 suction pressostat
ID2
LP1 suction pressostat
ID3
L1-Compressor 1, generic alarm
ID4
L1-Compressor 2, generic alarm
ID5
Common fan overload
ID6
HP2 suction pressostat
ID7
LP2 suction pressostat
ID8
L2-Compressor 1, generic alarm
ID9
L2-Compressor 2, generic alarm
Analog inputs
B1
Suction pressure probe L1
4...20 mA
-0.5...7.0 barg
B2
Condensing pressure probe
4...20 mA
0.0...30.0 barg
B3
Suction pressure probe L2
4...20 mA
-0.5...7.0 barg
B4
Suction temperature probe L1
NTC
B5
Discharge temperature probe
HTNTC
B6
Suction temperature probe L2
NTC
B7
External temperature probe
NTC
Tab. 2.v
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
Cab08/ Cbb08
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
PRESSURE
Condenser regulation type
Dab01
PROPORTIONAL BAND
Condenser setpoint
Dab03
12.0 barg
Condenser diff erential
Dab07
2.0 barg
High condenser pressure alarm threshold
Dae01
24.0 barg
Low condenser pressure alarm threshold
Dae03
7.0 barg
Tab. 2.w