The compressor will also be stopped in case of:
• Overload of the drive motor
•
•
•
Remedy the trouble and reset the message on the display before restarting.
Before remedying, consult the Safety precautions.
Shut-down warning
If one of the measurements exceeds the programmed shut-down warning level, a message will appear on
display (1) and general alarm LED (2) will light up, to warn the operator that the shut-down warning level
is exceeded.
The message disappears as soon as the warning condition disappears.
Monitoring components subject to service
Service warning
The regulator continuously monitors critical components. Each input is compared to programmed limits. If
these limits are exceeded, a message will appear on display (1) to warn the operator to take the necessary
action.
Automatic restart after voltage failure
For compressors leaving the factory, this function is made inactive. If desired, the function can be
activated. Consult the Atlas Copco Customer Centre.
If activated and provided the regulator was in the automatic operation mode and the
compressor control mode (local, remote 1 or remote 2) was not changed during the
voltage failure, the compressor will automatically restart if the supply voltage to the
module is restored within a programmed time period (this time period is called the power
recovery time).
The power recovery time can be set between 1 and 254 seconds or to 0. If the power
recovery time is set to 0, the compressor will always restart after a voltage failure, no
matter how long it takes to restore the voltage.
Instruction book
2920 1815 04 45
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