Rockwell Automation 23C PowerFlex 400 AC Drive Packages for Fan & Pump Apps - Manual (Page 185)

Rockwell Automation Publication 23C-IN001B-EN-P - June 2013 185
Electrical Installation Chapter 4
Installing Output Power
Wiring
To connect the AC output power wiring from the drive to the motor:
❏ Step 1. Wire the three-phase AC output power motor leads by routing them
according to the drive option type. Note that you must punch openings
in the option cabinet of the desired conduit size, following NEC and all
applicable local codes and standards.
Do not route more than three sets of motor leads through a single
conduit. This will minimize cross-talk that could reduce the
effectiveness of noise reduction methods. If more than three drive/
motor connections per conduit are required, shielded cable must be
used. If possible, each conduit should contain only one set of motor
leads.
❏ Step 2. Connect the three-phase AC output power motor leads to terminals
U/T1, V/T2, W/T3 on the power terminal block located in the
options cabinet.
❏ Step 3. Tighten the three-phase AC output power terminals to the proper
torque according to drive type as shown in Table 16 or Table 17 on page
187 .
The following sections describe incoming line components and how to install
them. Note that fuses and an input disconnect are also available as factory-
installed options.
Installing an Optional
Transformer or Reactor Input isolation transformers might be needed to help eliminate:
• Damaging AC line voltage transients from reaching the drive.
• Line noise from the drive back to the incoming power source.
• Damaging currents that could develop if a point inside the drive becomes
grounded.
ATTENTION: Unused wires in conduit must be grounded at both ends to avoid a
possible shock hazard caused by induced voltages. Also, if a drive sharing a
conduit is being serviced or installed, all drives using this conduit should be
disabled to eliminate the possible shock hazard from cross-coupled motor leads.
Failure to observe these precautions could result in bodily injury.
ATTENTION: Do not route signal and control wiring with power wiring in the
same conduit. This can cause interference with drive operation. Failure to
observe these precautions could result in damage to, or destruction of, the
equipment.