PLC Rack Location and Clearance Requirement
The following list provides PLC rack mounting location guidelines. For an example layout, see the
figure “Series 90-30 Example Layout” later in this chapter.
Locate PLC racks away from other components that generate a lot of heat, such as
transformers, power supplies, or power resistors.
Locate PLC racks away from components that generate electrical noise such as relays and
Locate PLC racks away from high voltages components and wiring such as circuit breakers
and fusible disconnects, transformers, motor wiring, etc. This not only reduces electrical
noise, but makes it safer for personnel working on the PLC.
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