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User manual
PART 2
ELEKTRONIKON II REGULATOR
- On GA Workplace FF with ICD the inlet temperature of the
compressed air into the dryer exceeds the warning level.
- On GA Workplace FF with ICD the pressure in the dryer
vessels is lower than the minimum or higher than the
maximum limit.
1.3 Automatic restart after voltage failure
For compressors leaving the factory, this function is made
inactive. If desired, the function can be activated. Consult
Atlas Copco.
Warning If activated and provided the module was in the
automatic operation mode, the compressor will
automatically restart if the supply voltage to the
module is restored within a programmed time
period.
The power recovery time (the period within which
the voltage must be restored to have an automatic
restart) can be set between 10 and 600 seconds
or to Infinite. If the power recovery time is set to
Infinite, the compressor will always restart after
a voltage failure, no matter how long it takes to
restore the voltage. A restart delay can also be
programmed, allowing e.g. two compressors to be
restarted one after the other.
1 General description
1.1 Automatic control of the compressor
The regulator maintains the net pressure between programmable
limits by automatically loading and unloading the compressor.
A number of programmable settings, e.g. the unloading and
loading pressures, the minimum stop time and the maximum
number of motor starts are taken into account.
For GA Workplace FF with ICD, the regulator also maintains
the pressure dewpoint of the dryer between programmable
settings by defining the switching time. A number of
programmable settings are taken into account.
The regulator stops the compressor whenever possible to reduce
the power consumption and restarts it automatically when the
net pressure decreases. In case the expected unloading period
is too short, the compressor is kept running to prevent too-
short standstill periods.
Warning A number of time-based automatic start/stop
commands may be programmed (see section 13).
Take into account that a start command will be
executed (if programmed and activated), even
after manually stopping the compressor.
1.2 Protecting the compressor
Shut-down
If the compressor element outlet temperature exceeds the
programmed shut-down level, the compressor will be stopped.
This will be indicated on display (3-Fig. 2.1). The compressor
will also be stopped in case of overload of the drive motor and,
on air-cooled compressors, also the fan motor.
Shut-down warning
If the compressor element outlet temperature exceeds a
programmed value below the shut-down level, this will also be
indicated to warn the operator before the shut-down level is
reached.
Service warning
A number of service operations are grouped in plans (called
Service plans A, B and C). Each Service plan has a programmed
time interval. If a time interval is exceeded, a message will
appear on display (3-Fig. 2.1) to warn the operator to carry out
the service actions belonging to that plan. Consult the related
Instruction book.
Warning
- A warning message also appears if:
- On water-cooled compressors the cooling water outlet
temperature exceeds the warning level.
- On Full-feature compressors the dewpoint temperature
exceeds the warning level.
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