Honeywell ControlEdge 900R04-0200 Getting Started page 38

Chapter 3 - Hardware
Figure 3-16: Non-redundant Controller Grounding
Figure 3-17: Expansion I/O Grounding
For more information about each I/O module wiring, see "I/O Wiring"
in the ControlEdge 2020 Platform Hardware Planning and Installation
Guide.
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