Rockwell Automation 8720MC High Performance Drives Installation Manual - Manual (Page 64)

Publication 8720MC-IN001D-EN-P — December 2002
3-2 Connecting Your 8720MC
Understanding Basic
Wiring Requirements This section contains basic wiring information for the 8720MC.
The maximum recommended cable length is 90 m (295.2 ft). If the
distance between the motor and the drive requires long motor cables,
you may need to add an output reactor or cable terminators to limit
voltage reflections at the motor. Refer to Figure 3.6 for motor power
connections.
ATTENTION
!
Plan the installation of your system so that you can
perform all cutting, drilling, tapping, and welding
with the system removed from the enclosure.
Because the system is of the open type construction,
be careful to keep any metal debris from falling into
it. Metal debris or other foreign matter can become
lodged in the circuitry, which can result in damage
to components.
IMPORTANT
This section contains common PWM servo system
wiring configurations, size, and practices that can be
used in a majority of applications. National Electrical
Code, local electrical codes, special operating
temperatures, duty cycles, or system configurations
take precedence over the values and methods
provided.
ATTENTION
!
You are responsible for conforming with the National
Electrical Code (NEC) and all other applicable local
codes, wiring practices, grounding, disconnects, and
over current protection of particular importance.
Failure to observe these precautions could result in
severe bodily injury or loss of life.
This equipment is at line voltage when AC power is
connected. Disconnect and lock out all ungrounded
conductors of the AC power line. Failure to observe
these precautions could result in severe bodily injury
or loss of life.