IC693CHS397 GE Fanuc 5-Slot CPU Master Backplane Chassis

Product Overview

The IC693CHS397 is a compact 5-slot Modular CPU Baseplate manufactured by GE Fanuc (now under Emerson Automation) for the renowned Series 90-30 Programmable Logic Controller (PLC) ecosystem. Operating as the primary control hub or master chassis (Rack 0) for space-conscious automation layouts, this unit integrates the system’s core communication backplane bus. It manages data transfers, distributes logic power, and establishes a secure structural foundation with a net physical weight of 0.65 kg to protect the primary CPU and adjacent field modules from mechanical stress.

Key Advantages

• Optimized Compact Design: Provides a space-saving 5-slot logical framework (1 dedicated CPU/specialty module channel and 4 standard I/O option slots) for targeted control environments.
• High Efficiency Power Draw: Consumes an exceptionally low internal current load of only 270 mA, lowering panel heat accumulation and optimizing power resource distribution.
• Scalable Expansion Capabilities: Outfitted with a right-hand 25-pin D-type female connector, permitting easy daisy-chain integration to remote and expansion sub-racks across distances up to 50 feet (15 meters).
• Lightweight Structure: Built with a rigid open-frame housing that maintains a low net weight of 0.65 kg, allowing for straightforward handling and rapid installation in complex enclosure setups.

Technical Specifications

Quick Installation Tips

• Slot Location Blueprint: Always mount the primary system Power Supply Module in the unnumbered leftmost slot. Insert your primary Series 90-30 CPU or high-priority specialty processing card strictly into Slot 1, leaving Slots 2 through 5 open for standard discrete/analog I/O and communication extensions.
• Bus Interconnection Restrictions: When deploying downstream expansion or remote baseplates via the 25-pin D-type female interface, ensure the total aggregate cable length does not exceed the maximum operational limit of 50 feet (15 meters).
• Panel Installation: Mount the 0.65 kg open backplane assembly securely to a rigid, clean metal panel inside an electrical enclosure using appropriate screws and split-lock grounding washers.

Technical FAQs

Q1: Can this 5-slot baseplate operate as a secondary expansion rack without a CPU?

A1: No. The IC693CHS397 is explicitly designed as a main CPU Master Baseplate. It holds system address Rack 0 by default and requires a local processing unit in Slot 1. For secondary non-CPU sub-racks, separate expansion or remote baseplate units must be used instead.

Q2: Why is the power supply slot not factored into the official 5-slot configuration?

A2: GE Fanuc isolates the power supply module slot on the far left. This design provides 5 true logical channels for application and processor modules without wasting a system address space on power infrastructure.

Q3: How does the 270 mA internal load benefit high-density panel engineering?

A3: The minimal 270 mA consumption at +5VDC means the empty backplane draws very little power on its own. This leaves the vast majority of the power supply module's rated capacity available to drive power-heavy field devices and high-density I/O circuits.