Parameters Meaning
8
Switching the refrigeration dryer on and off
Factory setting: ON (Option T3)
This parameter switches the dryer permanently on or off:
■ OFF: refrigeration dryer off
■ ON: refrigeration dryer on
A password is required to change this parameter. In machines without a refrigeration
dryer, the parameter is factory set to OFF.
C
System setpoint pressure: Switching differential
The switching differential determines the distance between cut-in and cut-out pres‐
sure (system setpoint pressure: switching point) and thus the switching frequency
from LOAD to IDLE.
Setting range [bar]: −0,1 ... −5,0
D
System setpoint pressure: Switching point
The switching point corresponds to the working pressure of the air system and the
cut-out pressure of the machine.
Setting range [bar]: 5.5 ... maximum operating overpressure
E
maximum possible setpoint pressure setting
Only KAESER Service has the right to change this parameter.
F
Options
The displayed value informs KAESER Service concerning the controller's internal
machine configuration.
Tab. 44 Parameters
Further information Means of changing or adjusting parameters are given in chapter 8.3.
4.10.3 Messages
Alarm message
An alarm shuts the machine down automatically. The red LED
13
flashes (Fig. 8).
Warning message
The yellow LED lights
15
to indicate a warning (figure 8).
4
Design and Function
4.10 Functional description – SIGMA CONTROL BASIC
36
Service Manual Screw Compressor
ASK T SIGMA CONTROL BASIC
9_5717 20 E
