GE Fanuc IC693CHS397M

Introduction

Designed as the central mounting and backplane assembly for a modular Series 90-30 PLC, GE Fanuc IC693CHS397M provides a five-slot platform for organizing the processor and control modules. It is the M revision of the IC693CHS397 modular CPU baseplate family.

Unlike an expansion-only rack, this baseplate includes a dedicated CPU position and is intended to serve as the primary rack in the system.

Rack Configuration

The layout is straightforward:

• Power supply: dedicated unnumbered position
• Slot 1: CPU or compatible specialty module
• Slots 2–5: I/O and option modules
• Right side: expansion-bus connection

Only one CPU baseplate is used in a Series 90-30 system; additional racks can be expansion or remote baseplates.

Product Data

Specification	Details
PLC Platform	GE Fanuc Series 90-30
Baseplate Type	5-slot modular CPU base
Revision	M
Rack Position	Rack 0
CPU Capacity	1
Available I/O / Option Positions	4
Supply Connection	Dedicated power-supply slot
Bus Connector	25-pin D-shell female
Internal Current	270 mA @ 5 VDC
Dimensions	Approx. 10.43 × 5.12 × 5.59 in.
Expansion Distance	Up to 15 m / 50 ft

The published product data lists dimensions of approximately 10.43 × 5.12 × 5.59 inches and internal power use of 270 mA at 5 VDC.

Construction and Connectivity

The assembly incorporates the PLC backplane and module mounting positions into one compact rack structure. Its internal bus distributes system power and provides communication paths between the installed CPU, I/O, and option modules.

The right-side expansion connector allows the rack to be connected with compatible expansion or remote baseplates. This provides a practical way to extend the I/O architecture without replacing the main CPU rack.

Where It Can Be Applied

The baseplate is suitable for established Series 90-30 control installations, including automated production lines, machine-control cabinets, material-handling equipment, and process-control applications.

It can also be useful for system restoration when an original rack has suffered mechanical damage or when a replacement backplane is required during PLC maintenance.

Replacement and Service Notes

When selecting a replacement, confirm the complete IC693CHS397M designation rather than relying only on the generic IC693CHS397 family number. Revision differences should be considered when matching an existing system.

Check the CPU, power supply, I/O modules, rack configuration, and expansion wiring before commissioning. Keep unused module positions protected from excessive dust and moisture, and avoid forcing modules into the backplane connectors

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