Johnson Controls SABROE UniSAB III User Manual

Engineering manual - UniSAB III 1.10.8
100/346
001930 en 2021.06
Compressor control and surveillance
3.2.4 Display indications (screw compressors)
The following table shows the display texts for the limiters.
Overview picture indication
Limiter
Compressor
stopped
Compressor
running
Alarm picture,
Passive indication
Alarm picture,
Active indication
Standard Limiters:
Low suction pressure Pause
Suction lim.
Limiting suction
pressure
Suction pressure
low lim.
High discharge pressure Pause Discharge lim. Limiting discharge
pressure
Discharge pressure
high lim.
High motor current Irrelevant Running
overload
None None
High motor power Ready Running
overload
None None
Low brine temperature Pause
Suction lim.
Limiting brine tem-
perature and
Limiting suction
pressure
Brine temperature
low lim. and
limiting brine
temperature
High water temperature Pause Discharge lim. Limiting hot
water and
limiting discharge
pressure
Brine temperature
high lim. and
limiting hot water
High differential pressure
Irrelevant Irrelevant Irrelevant Irrelevant
Special limiters:
High suction pressure Ready
Suction lim. 1) None 2) 3) Suction pressure
high lim.
High motor torque
(current)
Ready Running
overload
None None
High internal suction
pressure
Ready Running
overload
None High internal
suction pressure
Low oil pressure Ready Running
overload
None Low oil pressure
Start-up limiter
Ready Running
overload
None High suction press
and/or
Low oil pressure
Suction ramp
Irrelevant
Suction lim.
Limiting suction
pressure
Irrelevant
High discharge
temperature
Irrelevant Irrelevant Irrelevant Irrelevant
Separator velocity
Irrelevant Running
overload
High separator flow High separator flow
Insufficient main
oil pressure
Irrelevant Running
overload
Low main oil
pressure
Low main oil
pressure
Forced speed Irrelevant Irrelevant None Forced speed
active
High internal pressure Irrelevant Running
overload
High internal
pressure
High internal
pressure
High suction pressure
gradient
Irrelevant Irrelevant None High suction pres-
sure gradient
Table 27: Display indications - screw compressors

Johnson Controls SABROE UniSAB III Specifications

General

Brand	Johnson Controls
Model	SABROE UniSAB III
Category	Control Systems
Language	English