Rockwell Automation 20M LPM15 Liquid-Cooled Adjustable Frequency AC Drive FRN 2.xxx - Manual (Page 34)

1-22 Installation/Wiring
Installing Output Power
Wiring This section provides instructions on wiring output contactors, motor
overload protection, and output wiring to the motor.
Installing Mechanical Motor Overload Protection (Optional)
To provide the motor with overload protection, local, national, and
international codes (e.g., NEC/CEC) may require one of the following:
• a motor thermostat be installed internal to the motor.
• a mechanical thermal motor overload relay, sized to protect the motor, be
installed between the motor and the drive’s output terminals.
In multiple motor applications (V/Hz regulation only), each motor must
have its own user-supplied overload and branch circuit protection.
Installing Output Wiring from the Drive Output Terminals to the Motor
Important: The total motor lead length must not exceed 76 meters (250
feet).
Use the following steps to connect the AC output power wiring from the
drive to the motor:
1. Wire the three-phase AC output power motor leads by routing them as
shown in Figure 1.1 , Figure 1.2 or Figure 1.3 .
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.
!
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
!
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.