Johnson Controls SABROE Unisab III Control, Engineering Manual

Page: 249 / 348

Engineering manual - UniSAB III 1.10.8
001930 en 2021.06
249/346
Set-up
11. Filter diff. high
1. SMC Mk 4; during start-up and operation, the alarm for high oil filter differential pressure is delayed
for the indicated period of time.
2. For SMC Mk 3 and earlier versions, this timer is not used.
12. Total unloading
When configured for total unloading, the compressor will stop if it has been running constantly in 0% for
the stated time.
13. Oil pressure low
During start and operation the shutdown for low oil pressure is delayed for the stated time.
14. Oil pressure high
During start the shutdown for high oil pressure is delayed for the stated time. No delay during normal
operation.
15. Oil temperature low
During start the shutdown for low oil temperature is delayed for the stated time. No delay during normal
operation.
If the start Oil temperature low delay is set to 0 (zero) seconds, the oil temperature shutdown and alarm
supervision will be set active during compressor standstill too preventing the compressor from starting
with too low oil temperature. However, the shutdown will be disabled during the motor starting phase.
This is to protect the motor.
16. Oil temp high
During start the shutdown for high oil temperature is delayed for the stated time. No delay during normal
operation.
17. Superheating low
During start the shutdown for low superheating is delayed for the stated time. No delay during normal
operation.
1. For discharge superheat
2. For suction superheat
18. Superheating high
During start the alarm for high superheating is delayed for the stated time. No delay during normal
operation.
19. Disch. pressure, overload
In case the discharge pressure is higher than the alarm limit within the stated time, the compressor will
stop.
20. Current overload
If the motor current or power is higher than the set point within the stated time, the compressor will stop
and an error message will appear.