Rockwell Automation 1336S Plus FRN 1.xx-5.xx - Manual (Page 177)

C–3 CE Conformity
RFI Filter Leakage Current
The RFI filter may cause ground leakage currents. Therefore a solid
ground connection must be provided as shown below.
!
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)
T (L3)
PE
Conduit/4-Wire Cable
RFI
Filter
Shield Terminated in Cable
Clamp on A Frame Drives
Nearest
Building Structure Steel
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.
Electrical Configuration
Grounding