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Alarms and shutdowns
2.3.2
Shutdowns and alarms for reciprocating compressors
Shutdown/alarm
Low suction pressure
High suction pressure
Low suction gas superheat
High suction gas superheat
Low discharge pressure
High discharge pressure
High discharge temperature
Low oil pressure (differential pressure)
Low brine/intermed. gas temperature
Low discharge temperature
Low oil temperature
High oil temperature
High oil filter differential pressure
Compressor motor overload
Compressor motor error/emergency stop/
HP
High motor temperature (thermistor)
PMS error
No starting permission
High differential pressure (Pc - Pe)
High brine/intermed. gas temperature
High oil pressure
High intermed. pressure
Low intermed. pressure
Oil rectifier error
Wrong starting number in sequence
Low external input signal
High external input signal
Low discharge gas superheat
Discharge pressure overload
Evolution, shutdown from PLC
Evolution, no communication to PLC
Limiter, suction pressure
Limiter, discharge pressure
Limiter process out (brine) temperature
Cooling fan error
Limiter, hot water
Limiter, discharge temperature (recip)
Liquid slugging
Limiting differential pressure (recip)
No real time clock
Liquid slugging
No evaporator flow
No condenser flow
High process in temperature
Low process in temperature
Emergency stop
Low process out temperature
High process out temperature
Engineering manual - UniSAB III 1.10.8
001930 en 2021.06
alarm + shutdown 5)
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alarm + shutdown (Mk4)
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Id
Danbuss
Profibus/
Modbus
31
31
32
32
33
33
34
34
35
35
36
36
37
37
38
38
39
39
40
40
41
41
42
42
43
43
46
46
47
47
49
49
55
55
56
56
57
57
58
58
59
59
60
60
61
61
64
64
65
65
67
67
68
68
69
69
70
70
71
71
72
72
73
73
74
74
75
75
82
75
76
76
78
78
NA
78
NA
79
NA
80
NA
88
NA
93
NA
94
NA
95
NA
96
NA
97
NA
98
NA
99
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