Engineering manual - UniSAB III 1.10.8
001930 en 2021.06
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Measuring
Min.
Max.
Factory
Note
Suction pressure
VMY Mk2-2.5 compressor
High shutdown
High alarm
Low alarm
Low shutdown
Set point 1
Set point 2
-
1.5
-1.0
-1.0
-
22.0
20.0
20.0
19.0
19.0
-
5.0
1.5
1.0
-
3+4+5
3+4+5
3+4+5
Discharge pressure
VMY Mk2-2.5 compressor
High shutdown
High alarm
Low alarm
Low shutdown
Set point 1
Set point 2
4.0
3.0
-
-1.0
53.3
52.8
-
-1.0
52.0
52.0
16.0
15.0
-
-1.0
1+6
1+6
-
1+5
Discharge temperature
VMY Mk2-2.5 compressor
High shutdown
High alarm
Low alarm
Low shutdown
60.0
50.0
-65.0
-
170.0
170.0
100.0
90.0
-65.0
-
1+6
1+6
Oil temperature
VMY Mk2-2.5 compressor
High shutdown
High alarm
Low alarm
Low shutdown
40.0
30.0
10.0
0.0
110.0
110.0
50.0
40.0
65.0
60.0
45.0
40.0
2+7
2+7
2+7
2+7
Table 50
3: Low suct Pressure
Yes
No
Select
Yes
to activate shutdown relay at low suction pressure shutdown. Select
No
not to activate shut-
down relay at low suction pressure shutdown. It can be an advantage for SCADA systems not to receive
a low suction pressure shutdown as UniSAB III resets this automatically.
4: Capacity signal
Cap.Pos.
Freq.
Select
Cap.Pos.
if the terminal input for capacity is connected to a capacity slide transmitter or is config-
ured as an SAB 128/163 HR compressor with analogue speed control in the frequency converter.
Select
Freq.
if the terminal input for capacity is connected to a frequency converter so that changes in
the motor frequency (rpm) are shown as changes in the capacity.
5: SMC LL
Yes
No
Select
Yes
to activate the
Long Life (LL)
service function. The
Long Life
function is available for recipro-
cating compressor types SMC, TSMC, HPC and HPX in the upgraded Mk 4 LL versions.
The
Long Life service intervals
is a feature used in the service maintenance program, see subsection
5.1.2 Compressor maintenance (screw and reciprocating).
Note:
The
Long Life
feature is available from software version 1.10.6, and it will automatically be acti-
vated (set to
Yes
) for all compressors in the SMC family leaving the factory after July 2016.
Summary of Contents for SABROE Unisab III Control
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