Procedure
1. Take the socket spanner, which can be found in the tool set, and turn it from position "O" to
position "I". The current position is marked by a red dot or position indicator on the enclosure.
Figure 10-7 Make-proof grounding switch
2. The contacts are closed and the voltage DC link is grounded.
CAUTION
Grounding while the system is live
You must note the following to prevent injury or material damage:
For operation, the make-proof grounding switch must be deactivated and the grounding
switch lever must be removed before the voltage is switched on. The interlock mechanism
is thus activated.
This prevents grounding while the system is live, which could cause a DC link short-circuit.
Maintenance
10.3 VFD Power Down and Door Access
Type 6SR5 Air-Cooled
66 Operating Instructions, AK, A5E39390112
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