Siemens SINAMICS S120 Equipment Manual page 155

Removing the connection clip to the basic interference suppression module for operation on an
ungrounded supply system (IT system)
If the Power Module is operated from a non-grounded line supply (IT system), the connection
bracket to the basic interference suppression module of the Power Module must be
removed.
The position of the connection clip can be seen in the overviews of the Power Modules.
Note
Warning label on the connection clip
A yellow warning label is attached to each connection clip so that it is easier to find.
• The warning label must removed from the connection clip (by pulling it off) if the
connection clip is to remain in the unit (operation on a grounded line supply).
• The warning label must be removed together with the connection clip if the unit is
operated on a non-grounded line supply (IT supply system).
Figure 5-47
NOTICE
Damage to the device through not removing the connection clip with a non-grounded line
supply
Failure to remove the connection clip to the basic interference suppression module on a
non-grounded line supply (IT system) can cause significant damage to the device.
• With a non-grounded line supply (IT system), remove the connection clip to the basic
AC Drive
Manual, 06/2019, 6SL3097-5AL00-0BP1
Warning label on the connection clip
interference suppression module.
Power Modules
5.3 Power Modules Chassis
153