GE AC Instalation and operation manual V10.docx
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When the power supply is running, the user may send the Not run signal at any time. This will
stop the IGBT PWM signals but all internal parts will be kept powered. To restart operation, send
the Run signal.
NEVER connect or disconnect the cables while the power supply is in this state.
4.5.3.
Emergency stop
The emergency stop button may be pressed at any time bringing the power supply to the Alarm
state. The emergency stop shall be only used when an emergency is detected. Please, avoid to
stop the equipment with the emergency button as a “normal practice” since it will contribute to
premature component aging. To lock the power supply and bring it to the Alarm state, follow
the Full stop procedure.
The emergency stop unpowers all the electromechanical devices in the cabinet so the power
supply is stopped by hardware assuring a full stop. The internal contactors will be open so no
power will be present at the DC link or at the output of the power supply. Only the control
boards, the embedded PC and the local touchscreen remain powered.
4.5.4.
Accidental shut down
When the power supply is suddenly disconnected from the mains special care must be taken for
restarting it. When the power supply is shut down with a charged DC link, some thermal
protections of the internal power supplies will prevent its start-up.
When an accidental shutdown happens disconnect the mains and wait for at least 2 minutes for
powering the cabinet again.
