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88 Start-up and operation
Action
Drives with an emergency stop circuit (options +Q951, +Q952, +Q963, +Q964, +Q978, +Q979):
Test and validate the operation of the emergency-stop circuit. See the delivery specific circuit
diagrams and wiring, start-up and operating instructions of the option.
Additional instructions for closing the DC switch-disconnector of the
￭
supply module cubicle ([Q11], option +F286)
If the DC bus is not alive and the DC switch-disconnector [Q11] of the supply unit is in
OFF position, [Q11] is interlocked by interlock [K11]. In order to get the supply unit
started there are two possibilities: the DC bus is powered up by another supply unit
(if applicable), or the DC bus must be powered by means of the local charging control
switch [S4], which forces the charging circuit on.
IGBT supply modules can then be charged as follows:
Note: Before local operation of the charging circuit via local charging control switch
[S4], make sure that the main breaker(s) of the supply unit is racked in and the DC
switch-disconnector for line-up charging [Q40] is closed.
•
Force the charging circuit of the unit on via setting the local charging control
switch [S4] to position "1".
•
Wait for a few seconds for the DC bus charging up to nominal voltage level.
•
Charge the IGBT supply modules: close the charging switch [Q10] of the units that
are to be powered up.
•
After the IGBT supply modules are charged and the charging light [P11] on the
cabinet door illuminates, the lock of DC switch-disconnector [Q11] is released. The
main DC switch-disconnector [Q11] can now be closed, and the charging switch
[Q10] opened.
•
Repeat this for all IGBT supply module cubicles belonging to this supply unit.
•
After that, set the local charging control switch [S4] back into OPEN position and
the DC bus will be discharged again.
When the DC switch-disconnector [Q11] is in ON position, follow the normal start-up
procedure to charge the line-up and to start the operation of the supply unit.
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