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Chapter 5—Electrical installation
POWERXL SERIES VFDS
MN040060EN—September 2020 www.eaton.com
Installation in corner-grounded network and
IT system
Corner grounding and IT system are allowed for all the drive
types.
In these circumstances, the EMC protection class must be
changed to level C4. This is done by removing the built-in
EMC and MOV screws with a simple procedure described
below.
WARNING
Do not perform any modifications on the AC drive when
it is connected to mains.
WARNING
Electric shock hazard—risk of injuries! Carry out wiring
work only if the unit is de-energized.
After disconnecting the supply, wait at least five minutes
before removing the cover to allow the intermediate
circuit capacitors to discharge.
WARNING
Failure to follow these instructions will result in death or
serious injury.
Remove the main cover of the AC drive and remove the
EMC/MOV screws depending on frame size (see
Figure
10–Figure 11
). Once the screw is removed, it can be
reconnected to re-engage the EMC protection.
Figure 10. Location of the EMC/MOV screw in frame 1.
Figure 11. Location of the EMC/MOV screws in
frame 2-4.
I/O connection
•
Run 240 Vac and 24 Vdc control wiring in separate conduit.
•
Communication wire to be twisted and shielded.
EMC screw
MOV screw
EMC screw
MOV screw
