Atlas Copco QAS 275-325, Instruction Manual

Page: 40 / 114

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S2 ....... Emergency stop button
Push the button to stop the generator in case
of an emergency. When the button is
pressed, it must be unlocked, before the
generator can be restarted. The emergency
stop button can be secured in the locked
position with the key, to avoid unauthorized
use.
S11 ..... Frequency selector switch (50 Hz/
60 Hz)
Allows to choose the frequency of the output
voltage: 50 Hz or 60 Hz.
S20 ..... ON/OFF switch
Position O: No voltage is applied to the
Qc4002™ module, the generator will not
start.
Position I: Voltage is applied to the
Qc4002™ module, it is possible to start up
the generator.
X25 .....Connection block
Inside the cubicle. Allows customer
connections.
X30 .....Connector X30
Connector for communication with other
generators with Qc4002™ when paralleling.
X31 .....Connector X31
Connector for communication with other
generators with Qc4002™ when paralleling.
X32 .....Connector X32
Connector for PMS communication with
other generators with Qc4002™ when
paralleling.
Qc4002™ module
The Qc4002™ module is located inside the control
panel, and communicates with a display unit, located
in front of the control panel. This control module will
carry out all necessary tasks to control and protect a
generator, regardless of the use of the generator.
This means that the Qc4002™ module can be used for
several applications.
Changing the output frequency is
only allowed after shutdown.
Refer to circuit diagram for the
correct connection.
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