Installation and Wiring 2-35
Electromagnetic Compatibility
(EMC)
The following guidelines are provided for EMC installation
compliance.
General Notes (Bulletin 284G only)
• The motor Cable should be kept as short as possible in order to
avoid electromagnetic emission as well as capacitive currents
• Conformity of the drive with CE EMC requirements does not
guarantee an entire machine installation complies with CE EMC
requirements. Many factors can influence total machine/
installation compliance.
• Using an EMI filter with any drive rating, may result in relatively
high ground leakage currents. Therefore, the filter must only be
used in installations and solidly grounded (bonded) to the
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.
Grounding
Connect a grounding conductor to the terminal provided as standard
on each ArmorStart Distributed Motor Controller. Refer to Table 2.2
for grounding provision location. There is also an externally available
ground terminal. Refer to Figure 2.2 and Figure 2.7.
Wiring
Wire in an industrial control application can be divided into three
groups: power, control, and signal. The following recommendations
for physical separation between these groups is provided to reduce the
coupling effect.
• Minimum spacing between different wire groups in the same tray
should be 6 in. (16 cm).
• Wire runs outside an enclosure should be run in conduit or have
shielding/armor with equivalent attenuation.
• Different wire groups should be run in separate conduits.
• Minimum spacing between conduits containing different wire
groups should be 3 in. (8 cm).
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