Rockwell Automation 1394 SERCOS Interface Multi-Axis Motion Control System Installation Manual - Manual (Page 56)

Publication 1394-IN002B-EN-P — February 2004
3-2 Connecting Your 1394 SERCOS Interface System
Building Your Own Cables
When building your own cables, follow the guidelines listed below.
•
Connect the cable shield to the motor end connector with a
complete 360° connection and the cable clamp on the drive end.
•
Use a twisted pair cable whenever possible. Twist differential
signals with each other and twist single-ended signals with the
appropriate ground return.
Refer to Appendix C for MP-Series and 1326AB (M2L/S2L) motor end
connector kit descriptions and catalog numbers.
Routing Power and Signal Wiring
Be aware that when you route power and signal wiring on a machine
or system, radiated noise from nearby relays, transformers, and other
electronic drives, can be induced into motor or encoder feedback,
communications, or other sensitive low voltage signals. This can cause
system faults and communication problems.
Refer to Chapter 1 for examples of routing high and low voltage
cables in wireways. Refer to System Design for Control of Electrical
Noise (publication GMC-RM001x-EN-P) for more information.
IMPORTANT
Factory made cables are designed to minimize EMI
and are recommended over hand-built cables to
ensure system performance.