The door of the closed-loop control cabinet is not electromechanically interlocked. For this
reason, it can also be opened during operation.
9.3.1
Opening the power unit doors for maintenance work
Opening the doors of the power unit
The doors can only be opened under the following conditions:
● The DC-link voltage is below a threshold value of 60 V.
● The circuit-breaker is open.
● The make-proof grounding switch is closed. The make-proof grounding switch is enabled
by the software.
● With synchronous motors, the field contactor must return the external enable signal at the
input with the status "OFF".
The position of the grounding switch lever is linked with the check-back signal for the status
of the "Opened" power system breaker and the threshold value (V<Vlimit).
WARNING
High voltages
High voltages can cause death or serious injury if safety rules are not observed or if equipment
is handled improperly.
Even when the door interlocking is released, dangerous high voltages can still be present at
the auxiliary circuits (fans, anti-condensation heating, closed-loop control, etc.).
Make sure that work is only carried out by qualified personnel under due observance of the
five safety rules, the warning information in these operating instructions, and the safety
information on the product itself.
WARNING
Not activated door lock
If the door locking mechanism is not activated during operation, then the drive can be
grounded live and cause a short-circuit in the DC link. A DC-link short-circuit can result in
death, serious injury, or material damage.
Remove the grounding bar before the voltage is switched on. This then activates the
mechanical interlocking system, guaranteeing safe drive operation.
9.3.2
Manually unlocking power unit doors
If the auxiliary voltage fails, you can only unlock the doors manually. To unlock the doors,
proceed as described in the chapter titled "Preparation for use".
Maintenance
9.3 Opening the doors
SINAMICS GM150 6SL3815-2LN41-4AA2
Operating Instructions 04/2017
199
Содержание SINAMICS GM150
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Страница 16: ...Table of contents SINAMICS GM150 6SL3815 2LN41 4AA2 16 Operating Instructions 04 2017 ...
Страница 18: ...Introduction 1 1 About these instructions SINAMICS GM150 6SL3815 2LN41 4AA2 18 Operating Instructions 04 2017 ...
Страница 72: ...Description 3 6 Description of options SINAMICS GM150 6SL3815 2LN41 4AA2 72 Operating Instructions 04 2017 ...
Страница 192: ...Operation 8 5 Fault and system messages SINAMICS GM150 6SL3815 2LN41 4AA2 192 Operating Instructions 04 2017 ...
Страница 228: ...Spare parts SINAMICS GM150 6SL3815 2LN41 4AA2 228 Operating Instructions 04 2017 ...
Страница 232: ...Service Support SINAMICS GM150 6SL3815 2LN41 4AA2 232 Operating Instructions 04 2017 ...
Страница 256: ...Index SINAMICS GM150 6SL3815 2LN41 4AA2 256 Operating Instructions 04 2017 ...
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