Rockwell Automation DC3E Non-Regenerative DC Drive User Guide 1/4 - 2 HP, 115/230 VAC - Manual (Page 17)

9 Installation
*Reliance Electric considers this an unfavorable condition and does not
recommend bundling power and logic leads for any length.
ATTENTION: Under no circumstances should power
and logic leads be bundled together. Induced voltage
can cause unpredictable behavior any electronic device,
including motor controls.
ƽ
As a general rule, Reliance Electric recommends shielding
of all conductors if:
1) wire lengths exceed 4 inches and power and logic leads
must be bundled together*; or
2) radiated and/or conducted noise must be minimized due
to concerns about immunity or general compliance (CE,
FCC, etc.)
It may be necessary to earth ground the shielded cable. If
noise is produced by devices other than the drive, ground
the shield at the drive end. If noise is generated by a
device on the drive, ground the shield at the end away from
the drive. Do not ground both ends of the shield.
If the device continues to pick up noise after grounding the
shield, it may be necessary to add AC line filtering devices,
or to mount the drive in a less noisy environment.
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