Rockwell Automation 20B PowerFlex 700 Installation Instructions - Frames 0…6 - Manual (Page 22)

22 Rockwell Automation Publication 20B-IN019E-EN-P - July 2013
PowerFlex 700 Adjustable Frequency AC Drive – Frames 0…6
EMC Compliance
Refer to page 7 for details.
CabIe Trays and Conduit
If cable trays or large conduits are to be used, refer to the guidelines presented in
the Wiring and Grounding Guidelines for Pulse Width Modulated (PWM) AC
Drives, publication
DRIVES-IN001.
Motor Cable Lengths
Typically, motor lead lengths less than 30 meters (100 feet) are acceptable.
However, if your application dictates longer lengths, refer to the Wiring and
Grounding Guidelines for Pulse Width Modulated (PWM) AC Drives,
publication
DRIVES-IN001 or the PowerFlex 700 Technical Data, publication
20B-TD001 .
Cable Types Acceptable for 200…600 Volt Installations
A variety of cable types are acceptable for drive installations. For many
installations, unshielded cable is adequate, provided it can be separated from
sensitive circuits. As an approximate guide, allow a spacing of 0.3 meters (1 foot)
for every 10 meters (32.8 feet) of length. In all cases, long parallel runs must be
avoided. Do not use cable with an insulation thickness less than or equal to 15
mils (0.4mm/0.015 in.). Use Copper wire only. Wire gauge requirements and
recommendations are based on 75 °C. Do not reduce wire gauge when using
higher temperature wire.
Unshielded Cable
THHN, THWN or similar wire is acceptable for drive installation in dry
environments provided adequate free air space and/or conduit fill rates limits are
provided. Do not use THHN or similarly coated wire in wet areas. Any wire
chosen must have a minimum insulation thickness of 15 Mils and must not have
large variations in insulation concentricity.
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, branch circuit
protection and disconnect devices. Failure to do so can 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 helps minimize the possible shock hazard
from “cross coupled” motor leads.