MP-Series Low Inertia Servo Motor Installation Instructions
11
Publication MP-IN002C-EN-P - April 2009
Build and Route Cables
Knowledgeable cable routing and careful cable construction improves system
performance.
Install cables as described in these guidelines.
•
Keep wire lengths as short as physically possible.
•
Route noise sensitive wiring (encoder, serial, I/O) away from input power
and motor power wiring.
•
Separate cables by 0.3 m (1 ft) minimum for every 9 m (30 ft) of parallel run.
•
Ground both ends of the encoder cable shield and twist the signal wire pairs
to prevent electromagnetic interference (EMI) from other equipment.
WARNING
Do not tightly gather or coil the excess length of a power cable. Heat is
generated within a cable whenever power is applied. Always position a power
cable so it may freely dissipate any heat.
A power cable should not be coiled, except for temporary use when building or
testing a machine. If you temporarily coil a power cable, you must also derate
the cable to meet local code or follow a authoritative directive, such as
Engineering Section 310.15(C) of the NEC Handbook.
Failure to observe these safety procedures could result in personal injury or
equipment damage.
ATTENTION
If any shield on a power cable is not grounded, high voltage can be present on
that shield.
Make sure there is a connection to ground for all shield wires inside a power
cable, and for the overall power cable shield.
Failure to observe safety precautions could result in personal injury or damage to
equipment.