Rockwell Automation 20D DC SCR Precharge Module - Manual (Page 15)

Installation/Wiring 1-5
Power Wiring
Cable Trays and Conduit
If cable trays or large conduits are to be used, please refer to guidelines
presented in Wiring and Grounding Guidelines for Pulse Width Modulated
(PWM) AC Drives (Publication No. DRIVES-IN001…).
General Notes
• The DC bus cable to the drive(s) should be kept as short as possible to
avoid electromagnetic emission and capacitive currents. Therefore, the
drive should be located in the same cabinet or next to the cabinet with the
DC SCR Precharge Module. If the connection leads between the DC bus
and drive are leaving the cabinet, shielded cables must be used.
• Conformity of the drive with CE EMC requirements does not guarantee
that an entire machine installation complies with CE EMC requirements.
Many factors can influence total machine/installation compliance.
!
ATTENTION: National Codes and standards (NEC, VDE,
BSI, etc.) and local codes outline provisions for safely
installing electrical equipment. Installation must comply with
specifications regarding wire types, conductor sizes, and
disconnect devices. Failure to do so may result in personal
injury and/or equipment damage.
!
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 must be
disabled. This will help minimize the possible shock hazard
from “cross-coupled” motor leads. Failure to observe these
precautions could result in bodily injury.