Johnson Controls SABROE Unisab III Control - 7.6. Electrical slide systems (certain screw compressors)

7.5.11 Adjusting short-stroke volume transmitter for SAB 193-233-283
and SAB 355
Note: The transmitter cannot be calibrated. Software calibration in Unisab III must be used.
Terminal connection is shown in Fig. 35.
Plug connection
1= Supply, 24V DC
2= Common 0V DC
3= Out 4-20 mA
= GND
Fig. 35: Terminal connection
Follow the instruction in subsection 7.5.5. Volume ratio slide adjustment, auto Vi and subsec-
tion 7.5.13. Software calibration, hydraulic slide systems
7.5.12 Adjusting short-stroke capacity rod for SAB 120 and SAB 151
Note: The transmitter cannot be calibrated. Software calibration in Unisab III must be used.
Terminal connection is shown in Fig. 36.
Plug connection
1= Supply, 24V DC
2= Common 0V DC
3= Out 4-20 mA
= GND
Fig. 36: Terminal connection
Note: As the compressors are equipped with auto Vi (controlled in 3 steps), follow the in-
struction in subsection 7.5.4. Capacity slide adjustment, auto Vi and subsection 7.5.13. Soft-
ware calibration, hydraulic slide systems
Calibration
Engineering manual - Unisab III 1.10
001930 en 2014.09
247/319