EL DC Instalation and operation manual v13.docx
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1. Send the Not enable signal to the converter (Run
Ready
Standby).
2. Press the emergency stop button (Standby
Alarm).
3. Disconnect the output disconnector.
4. Wait at least 60 seconds (time to get discharged the internal DC link capacitors).
5. Disconnect the input thermal-magnetic circuit breaker.
Before manipulating the cables in the cabinet terminals, please check the
voltages with a voltmeter to assure no voltage is present. The grid cable and the
EUT must be completely unpowered before connecting or disconnecting the
cables. The user must be sure that the input and output switches are both in
OFF position.
4.5.2.2. Standby stop
This type of stop is recommended if the converter will be stopped during some hours. The DC
link is discharged and therefore aging of the DC bus capacitors is prevented.
Send the Not enable signal to the converter. If the user wants to lock the converter in order to
avoid an accidental start-up, press the emergency stop button, and keep it pressed.
For restarting operation, release the emergency stop button and send the Reset signal. After
doing this, proceed as a standard start-up sending the Enable signal.
NEVER connect or disconnect the cables while the converter is in this state.
4.5.2.3. Ready
This type of stop is recommended if the converter will be stopped for a short time. The DC link
is kept charged and the converter is ready to run.
When the converter 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 converter is in this state.
4.5.3. Emergency stop
The emergency stop button may be pressed at any time bringing the converter 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 converter and bring it to the Alarm state, follow the
Full stop procedure.
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