OPERATION
PRODUCT
ACS6000
DOCUMENT KIND
User manual
DOCUMENT ID.
3BHS212794 E01
REV.
N
LANG.
en
PAGE
168/266
8.5.3. Parameter settings
8.6. Grounding switch and door locking system
The grounding switch of the CBU is a protection device that enables safe access to
the medium voltage units of the drive.
Figure 8-6 CBU grounding switch in ungrounded (A) and grounded (B)
The switch is electromechanically interlocked with a discharge monitoring circuit
that prevents the switch from closing when the DC-link capacitors are still charged.
NOTICE Risk of component damage!
Running the drive system with incorrect data can result in improper
operation, reduction of control accuracy and damage of equipment!
– DO NOT change any parameter if the meaning of the parameter and
the effects of the change are not fully understood.
– The parameters are set as required for operation and verified during
commissioning and must NOT be changed afterward
1) White illuminated push button:
DC link is grounded
• Lights up to indicate that the drive is grounded and that the
locking bar (see 1 in Fig. 8-7) of each medium voltage unit can
be moved to the unlocked or locked position.
2) Yellow illuminated push button: grounding switch unlocked
• Lights up to indicate that the grounding switch can be turned
to the ungrounded or grounded position.
• Press the yellow push button to turn the grounding switch to
the desired position.
3) Grounding switch in ungrounded position (A)
4) Grounding switch in grounded position (B): When the switch is
in grounded position, the DC link of the drive is connected to the
ground busbar of the drive.
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