Allen-Bradley PowerFlex 70 User Manual page 19

EMC Compliance
Refer to EMC Instructions on page 1-19
Cable Trays and Conduit
If cable trays or large conduits are to be used, refer to guidelines
presented in the PowerFlex Reference Manual.
ATTENTION: To avoid a possible shock hazard caused by induced
voltages, unused wires in the conduit must be grounded at both ends.
!
For the same reason, if a drive sharing a conduit is being serviced or
installed, all drives using this conduit should be disabled. This will help
minimize the possible shock hazard from "cross coupled" motor leads.
Motor Cable Lengths
Typically, motor lead lengths less than 30 meters (approximately 100
feet) are acceptable. However, if your application dictates longer lengths,
refer to the PowerFlex Reference Manual for details.
Installation/Wiring
for details.
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