I/O
type
No.
Screw
compressors
Reciprocating
compressors
SABCube Chiller
Digital output
1 Compressor motor
start signal
Compressor motor
start signal
(Compressor mo-
tor start signal)
-
2 Oil pump start
signal
Oil rectifier - -
3 Oil pump 2/cooling
fan start signal
Additional steps
valve B
Water pump start
signal
-
4 - - POV valve -
5 Shutdown Shutdown Shutdown -
6 Alarm Alarm Alarm -
7 Aux. output Aux. output Aux. output -
8 Start request
(PMS)
Start request
(PMS)
Start request
(PMS)
-
9 Capacity down Capacity stage no.
1/ Total unload –
additional steps
valve A
- -
10 Capacity up Capacity stage no.
2/ Valve for ther-
mo pump
- -
11 Volume Capacity stage no.
3/ Valve for ther-
mo pump/ Thermo
pump shaft end
SSSTV valve acti-
vate
-
12 Volume up Capacity stage no.
4/ Thermo pump
shaft end
Vi slide activate -
13 Economiser - suc-
tion line
Capacity stage no.
5
- -
14 Economiser – liq-
uid line
Capacity stage no.
6
- -
15 Oil distribution
pipe
Capacity stage no.
7/ Intermediate
liquid injection
Bypass valve -
16 Oil cooling (Dual
HLI 2 cooling when
Vi > 85%)
Oil cooling (oil
temp.) Thermo
pump internal
- Bypass function
(start unload)/Stop
valve for level con-
trol
17 Oil cooling (HLI
cooling stop valve)
Water cooling (dis-
charge temp.)
Thermo pump in-
ternal
- -
18 Oil rectifier (Ma-
rine)
Oil return - Oil return from
evaporator
19 - - - Oil return from
separator
20 Heating elements - - -
Table 33: Numbering of digital outputs
History
144/319
Engineering manual - Unisab III 1.10
001930 en 2014.09
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