Allen-Bradley PowerFlex 525 User Manual page 44

Chapter 1 Installation/Wiring
44
Installation Requirements Related to EN 61800-3 and the EMC Directive
• The drive must be earthed (grounded) as described in
Grounding on page
for additional grounding recommendations.
• Output power wiring to the motor must employ cables with a braided
shield providing 75% or greater coverage, or the cables must be housed in
metal conduit, or equivalent shield must be provided. Continuous
shielding must be provided from the drive enclosure to the motor
enclosure. Both ends of the motor cable shield (or conduit) must terminate
with a low-impedance connection to earth.
Drive Frames A...E: At the drive end of the motor, either
a. The cable shield must be clamped to a properly installed "EMC Plate"
for the drive. Kit number 25-EMC1-Fx.
or
b. The cable shield or conduit must terminate in a shielded connector
installed in an EMC plate, conduit box, or similar.
• At the motor end, the motor cable shield or conduit must terminate in a
shielded connector which must be properly installed in an earthed motor
wiring box attached to the motor. The motor wiring box cover must be
installed and earthed.
• All control (I/O) and signal wiring to the drive must use cable with a
braided shield providing 75% or greater coverage, or the cables must be
housed in metal conduit, or equivalent shielding must be provided. When
shielded cable is used, the cable shield should be terminated with a low
impedance connection to earth at only one end of the cable, preferably the
end where the receiver is located. When the cable shield is terminated at
the drive end, it may be terminated either by using a shielded connector in
conjunction with a conduit plate or conduit box, or the shield may be
clamped to an "EMC plate."
• Motor cabling must be separated from control and signal wiring wherever
possible.
• Maximum motor cable length must not exceed the maximum length
indicated in PowerFlex 525 RF Emission Compliance and Installation
Requirements on page 45
limits for the specific standard and installation environment.
Rockwell Automation Publication 520-UM001A-EN-E - February 2013
45. See General Grounding Requirements on page 16
for compliance with radio frequency emission
Connections and