Rockwell Automation 1336E IMPACT Adjustable Frequency AC Drive User Manual V 1-4.XX - Manual (Page 401)

CE Conformity E-3
RFI Filter Leakage Current
The RFI filter may cause ground leakage currents. Therefore a solid
ground connection must be provided as shown below.
Electrical Configuration
Grounding RFI Filter Grounding
Important: Using the optional RFI filter may result in relatively high
ground leakage currents. Surge suppression devices are also
incorporated into the filter. Therefore, the filter must be permanently
installed and solidly grounded (bonded) to the building power
distribution ground. Ensure that the incoming supply neutral is solidly
connected (bonded) to the same building power distribution ground.
Grounding must not rely on flexible cables and should not include
any form of plug or socket that would permit inadvertent
disconnection. Some local codes may require redundant ground
connections. The integrity of all connections should be periodically
checked.
!
ATTENTION: To guard against possible equipment
damage, RFI filters can only be used with AC supplies
that are nominally balanced and grounded with respect
to ground. In some installations, three-phase supplies are
occasionally connected in a 3-wire configuration with
one phase grounded (Grounded Delta). The filter must
not be used in Grounded Delta supplies.
JOG
ESC SEL
R (L1)
S (L2)
Ground Rod/Grid
or Building Structure Steel
T (L3)
PE
Conduit/4-Wire Cable
RFI
Filter
Shield Terminated in Cable
Clamp on A Frame Drives