
pRack +040000071 rel. 1.1 - 14.10.2011
33
ENG
I/O List
Digital outputs
NO1
L1-Compressor 1
NO8
L2-Compressor 1
NO2
L1-Compressor 2
NO9
L2-Compressor 2
NO3
L1-Compressor 3
NO10
L2-Compressor 3
NO4
L1-Fan 1
NO11
L2-Fan 1
NO5
L1-Fan 2
NO12
L2-Fan 2
NO6
L1-Fan 3
NO13
L2-Fan 3
NO7
Common alarms output
Digital inputs
ID1
L1-Suction HP pressostat
ID2
L1-Suction LP pressostat
ID3
L1-Compressor 1, generic alarm
ID4
L1-Compressor 2, generic alarm
ID5
L1-Compressor 3, generic alarm
ID6
L1-Common fan overload
ID7
L2-Suction HP pressostat
ID8
L2-Suction LP pressostat
ID9
L2-Compressor 1, generic alarm
ID10
L2-Compressor 2, generic alarm
ID11
L2-Compressor 3, generic alarm
ID12
L2-Common fan overload
Analog inputs
B1
L1-Suction pressure probe
4...20 mA
-0.5...7.0 barg
B2
L1-Condensing pressure probe
4...20mA
0.0...30.0 barg
B3
L2-Suction pressure probe
4...20 mA
-0.5...7.0 barg
B4
L1-Suction temperature probe
NTC
B5
L1-Discharge temperature probe
HTNTC
B6
L2-Condensing pressure probe
4...20mA
0.0...30.0 barg
B7
L2-Suction temperature probe
NTC
B8
L2-Discharge temperature probe
HTNTC
B9
External temperature probe
NTC
Tab. 2.x
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.y