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Grounding for 1394 CE
Requirements
Three-Phase
Mains with
Ground
Conduit Clamp
Filtered Conductors
Enclosure
Resolver/
High Resolution
Feedback
Cables
Allen-Bradley PLCs
Refer to the figure below for CE grounding requirements for 1394
installation.
Figure B.13
1394 CE Requirements
Ground Conduit to Enclosure
User-Supplied
Filter
E
1
User-Supplied
Unfiltered Conductors
Power Source
2
Bonded Cabinet
1
An Allen-Bradley filter (catalog number SP-74102-006-01, -02, -03) or Roxburgh filter (catalog number MIF323-GS,
or MIF330-GS, or MIF375-GS respectively) is required.
Mount the filter as close to the 1394 as possible. Isolate filtered conductors from unfiltered conductors. It is
recommended to mount the filter to the right of the axis modules to simplify routing of filtered (clean) and
unfiltered (noisy) wiring. The load end of the filter is considered noisy and should be routed carefully away from
clean signal wires.
2
The filter shown is sized for one 1394. Equivalent filters may be used for multiple units. Size the filter following
the manufacturers recommendation.
3
The input power PE terminal must be wired to the bonded cabinet ground bus for grounded power configurations.
IMPORTANT
Enclosure
Discrete I/O
24V
ESC
SEL
Three-Phase
Contactor
3
Ground Bus
All three-phase power in the cabinet must be filtered
to reduce EMI.
Interconnect Diagrams
JOG
Publication 1394-5.20 — July 2001
B-21
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