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Connecting System Module
Power
Allen-Bradley PLCs
Grounding Multiple Subpanels
To ground multiple subpanels, refer to the figure below.
Figure 2.8
Subpanels Connected to a Single Ground Point
The system module provides terminating points for the AC power
input, logic power, feedback, and various other control signals. The
slide-and-lock mechanism transfers power and commutation signals to
each axis module.
Each individual application requires different wiring. This section
provides guidelines for wiring your system. Because of the diversity of
applications and systems, no single method of wiring is applicable in
all cases.
Connecting Ground Wires
The 1394 system module provides a grounding bar as a common
point of chassis ground for the system and axis modules, as shown in
Figure 2.9. The system module single point bond bar wires to the
bonded system ground bus on the sub-panel.
Figure 2.9
1394 Ground Wire Connections
System module
single point bond bar
Connecting Your 1394 SERCOS Interface System
1394 Front View
PE1
PE1
PE1
To bonded cabinet ground bus
or power distribution ground
2-11
Always follow NEC and
applicable local codes
Ground grid or power
distribution ground
PE1
Publication 1394-5.20 — July 2001
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