Terminology
Term Explanation
ARAVF Automatic restart after voltage failure. See section Elektronikon regulator II.
Compressor
element outlet
The regulator does not accept illogical settings, e.g. if the warning level is programmed at
95 ˚C (203 ˚F), the minimum limit for the shut-down level changes to 96 ˚C (204 ˚F). The
recommended difference between the warning level and shut-down level is 10 ˚C (18 ˚F).
The recommended minimum setting is 70 ˚C (158 ˚F). For testing the temperature sensor
the setting can be decreased to 50 ˚C (122 ˚F). Reset the value after testing.
Delay at signal Is the time period during which the warning signal must exist before the warning message
appears.
Delay at start Is the time period after starting which must expire before generating a warning. The setting
should be less than the setting for the delay at signal.
Minimum stop
time
Once the compressor has automatically stopped, it will remain stopped for the minimum
stop time (approx. 20 seconds), whatever happens with the net air pressure. Consult Atlas
Copco if a setting lower than 20 seconds should be required
Oil separator Use Atlas Copco oil separators. The recommended maximum pressure difference is 1 bar
(15 psi).
Power recovery
time
Is the period within which the voltage must be restored to have an automatic restart. Is
accessible if the automatic restart is activated. See section Elektronikon II regulator. To
activate the automatic restart function, consult Atlas Copco.
Proportional band
and integration
time
The settings for the Proportional band and integration time are determined by experiment.
Altering these settings may damage the compressor. Consult Atlas Copco.
Instruction book
56 2920 1634 04
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