3: Low suct Pressure
Yes
No
Select Yes to activate alarm relay at low suction pressure alarm. Select No not to activate
alarm relay at low suction pressure alarm. It can be an advantage for SCADA systems not to
receive a low suction pressure alarm 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 configured as an SAB 128/163 HR compressor with analog 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.
6.4.8 External (User 1) input
See section 3.5. Compressor control - user functions.
6.4.9 Aux. output
See section 3.5. Compressor control - user functions.
Set-up
Engineering manual - Unisab III 1.10
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