Product Manual

Table Of Contents
Parameter Unit Minimum
setting
Factory
setting
Maximum
setting
Starting pressure (10 bar compressors) psig 7.2 113.1 142.1
Stopping pressure
Stopping pressure (8 bar compressors) bar(e) 0.5 7.8 7.8
Stopping pressure (8 bar compressors) psig 7.2 113.1 113.1
Stopping pressure (10 bar compressors) bar(e) 0.5 9.8 9.8
Stopping pressure (10 bar compressors) psig 7.2 142.1 142.1
There will always be a difference of at least 0.1 bar (1.45 psi) between the programmed starting and
stopping pressure.
Parameters
Parameter Unit Minimum
setting
Factory
setting
Maximum
setting
Number of motor starts starts/day 720 8640 8640
Restart delay sec. 0 0 1200
Communication time-out sec. 10 30 60
Service plan
The built-in service timer will give a Service warning message after a pre-programmed time interval has
elapsed.
Consult Atlas Copco if a timer setting has to be changed. See section Calling up/modifying service timer
settings. The intervals must not exceed the nominal intervals and must coincide logically.
Terminology
Term Explanation
ARAVF Automatic restart after voltage failure. See section General description and Activating
automatic restart.
Restart delay This parameter allows to program that not all compressors are restarted at the same
time after a power failure (ARAVF active).
Delay at shut-
down signal
Is the time for which the signal must exist before the compressor is shut down. If it is
required to program this setting to another value, consult Atlas Copco.
Motor start/stop The regulator does not accept illogical settings, e.g. if the 'motor stop' is programmed at
7.0 bar(e) (101 psi(g)), the maximum limit for the 'motor start' changes to 6.9 bar(e) (100
psi(g)). The recommended minimum pressure difference between 'motor start/stop' is
0.6 bar (9 psi(g)).
Instruction book
60 2920 7110 21