IC693CHS391 GE Fanuc Series 90-30 10-Slot CPU Baseplate

Product Overview

The IC693CHS391 is a 10-slot Modular CPU Baseplate engineered by GE Fanuc for the legacy Series 90-30 programmable logic controller (PLC) platform. Serving as the primary master backplane, this structural chassis houses the internal electronic communication bus, distributed power lines, and dedicated slots required to link modular CPUs, specialized option coprocessors, and high-density I/O modules into a single, cohesive automation node. Featuring a robust, lightweight panel-mount frame with a net weight of approximately 0.82 kg, this rack ensures stable mechanical support and electrical ground connectivity for all nested automation hardware.

Key Advantages

• Maximized Module Footprint: Provides 1 dedicated CPU/specialty module slot (Slot 1) and 9 multi-purpose I/O or option slots (Slots 2-10) to accommodate expansive automation systems.
• Dedicated Power Slotting: The leftmost power supply receiver is separate from the formal slot count, maximizing available physical space for field wiring modules.
• Flexible Bus Expansion: Outfitted with a right-hand 25-pin female connector port capable of daisy-chaining up to 4 or 7 expansion/remote baseplates over a maximum distance of 700 feet.
• Optimized Physical Construction: Engineered with a compact layout that minimizes cabinet footprint while its 0.82 kg lightweight open-enclosure design facilitates simple installation, passive convection cooling, and rapid hardware module swapping.

Technical Specifications

Quick Installation Tips

• Node Address Rule: As the primary CPU master baseplate, this chassis is assigned to Rack Number 0 by default. Only one (1) CPU baseplate can exist in a single system control group.
• Slot Layout Constraints: Always place your primary power supply in the leftmost slot. Secure the CPU or complex modules (e.g., FIP Bus Remote I/O Scanner) strictly into Slot 1, as it is uniquely wired for processing cards. Slots 2 through 10 are reserved for discrete/analog I/O and standard options.
• Bus Interconnection: Use high-grade shielded matching cables under 700 feet long when extending connections via the 25-pin female D-sub connector to remote or expansion baseplates.
• Environmental Shielding: Mount the 0.82 kg open chassis securely using screws and washers on a flat metal panel inside an enclosure. Ensure the backplane is properly grounded and kept isolated from airborne dust, water mist, and corrosive chemical agents.

Technical FAQs

Q1: Why is the power supply module slot excluded from the total 10-slot count?

A1: GE Fanuc separates the power slot to ensure users get 10 true operational slots for control components. The power supply sits on the far left, directly feeding the 5 VDC internal power lines without occupying a system address channel.

Q2: Can this baseplate run as a standalone expansion rack without a CPU?

A2: No. The IC693CHS391 is specifically designed as the master CPU baseplate (Rack 0). For sub-racks without a local processor, separate expansion or remote I/O baseplates must be used and connected via the 25-pin bus port.

Q3: How many expansion racks can be daisy-chained to this master chassis?

A3: Depending on the specific model of the CPU module installed in Slot 1, the backplane bus can support a maximum of either 4 or 7 additional downstream expansion baseplates.