Notes - Johnson Controls SABROE UniSAB III Engineering Manual

Control system for refrigerating compressors
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Measuring
Process in temperature
(°C)
Suction gas superheat
(°C)
Calculated value
Discharge gas superheat
(°C)
Calculated value
Table 15: Measured and calculated pressure levels and temperatures - HPO/HPC/HPX
Measuring
User input 1
(4-20 mA)
Table 16: 4-20 mA User input 1 signal
2.1.7

Notes

Note 1
Shutdown cannot be switched off until the problem has been solved.
Note 2
Shutdown can be switched off immediately (
Note 3
Shutdown is switched off automatically.
Note 4
Safety limits can be entered in bar or °C/R.
Note 5
Shutdown monitoring active when digital output compressor starting signal has
been activated.
Note 6
Shutdown monitoring always active
Note 7
Shutdown monitoring delayed 300 sec. after compressor start.
For reciprocating compressors, the Oil temperature low delay after start is adjust-
able. If the Oil temperature low delay is set to 0 (zero) seconds, the oil temperature
shutdown and alarm supervision will also be activated during compressor standstill
thus preventing the compressor from starting with too low oil temperature.
Note 8
Shutdown monitoring delayed 180 sec. after compressor start.
Note 9a
Shutdown monitoring delayed 45 sec. after compressor start.
Note 9b
Shutdown monitoring delayed 45 sec. after compressor start.
Note 9c
Shutdown monitoring delayed 15 sec. (the Start unload timer setting)
after compressor start.
High shutdown
High alarm
Low alarm
Low shutdown
High shutdown
High alarm
Low alarm
Low shutdown
Low alarm
Low shutdown
Set point 1
Set point 2
High shutdown
High alarm
Low alarm
Low shutdown
46/346
Alarms and shutdowns
Min.
Max.
Factory
-60
100.0
60.0
-60
100.0
50.0
-100
100.0
4.0
-100
100.0
2.0
6.0
120.0
110.0
5.0
120.0
100.0
0.0
40.0
4.0
0.0
40.0
2.0
5.0
65.0
20.0
0.0
65.0
10.0
0.0
999.9
5.0
0.0
999.9
10.0
Min.
Max.
Factory
-999.9
999.9
0.0
-999.9
999.9
0.0
-999.9
999.9
0.0
-999.9
999.9
0.0
F4
/RESET key).
Engineering manual - UniSAB III 1.10.8
Note
1+6
1+6
1+6
1+6
2+7
2+7
2+10+13
2+10+13
2+10+13
2+10+13
23
23
Note
3+18
3+18
3+18
3+18
001930 en 2021.06

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