Instruction book
2920 1472 03
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1.8 Elektronikon control system
In general, the Elektronikon regulator has following functions:
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automatic control of the compressor
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protecting the compressor
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monitoring components - service warning
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automatic restart after voltage failure
1.8.1 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.
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 stopping 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. Take into account that
a start command will be executed (if programmed and activated), even after manually stopping the
compressor.
1.8.2 Protecting the compressor
Shut-down and motor overload
Several temperature and pressure sensors are provided on the compressor. If one of these
measurements (temperature at LP element outlet, temperature at HP element outlet, intercooler
pressure as well as oil pressure) exceeds the programmed shut-down level, the compressor will be
stopped. This will be indicated on the control display.
The compressor will also be stopped in case of overload of the drive motor.
Consult the safety precautions as mentioned in section 4 and remedy the trouble. See also the User
manual for Elektronikon regulator, section “Status data menu”.
Shut-down warning
If the regulator detects a temperature or pressure just below the programmed shut-down level, this will
be indicated on the control panel to warn the operator before the shut-down level is reached.
The message disappears as soon as the warning condition disappears.
1.8.3 Service warning
A number of service operations are grouped (called Level A, B, C, ...). Each level has a programmed
time interval. If a time interval is exceeded, a message will appear on display (2-Fig. 1.10) to warn the
operator to carry out the service actions belonging to that level. See section 4.
1.8.4 Automatic restart after voltage failure
The regulator has a built-in function to automatically restart the compressor if the voltage is restored
after voltage failure. For compressors leaving the factory, this function is made inactive. If desired,
the function can be activated. Consult Atlas Copco.
