Rockwell Automation System Design for the Control of Electrical Noise - Manual (Page 71)

Publication GMC-RM001A-EN-P — July 2001
Power Distribution 7-13
Long Power Cable Runs
The 24V dc lines entering or leaving panels that cannot be bonded
together by flat strips (no longer than 10 times the width) should have
filters at the point of entry.
Figure 7.12
Long cable runs between panels
Note: If heavy circulating currents at power frequency are likely, the
floating filter technique or separate, local PSU’s, may be safer to
use.
+24V
24V com
Panel A Panel B