GE 90-30 Series IC693CHS393 Non-CPU Remote Expansion Chassis

Product Overview

The IC693CHS393 is a 10-slot Remote Baseplate developed by GE Fanuc (now under Emerson Automation) for the Series 90-30 programmable logic controller (PLC) platform. Specifically engineered as a non-CPU rack, this hardware is the cornerstone for implementing distributed I/O architectures over extended plant floor distances. By removing processing overhead locally, this baseplate handles data expansion up to 700 feet away from the master controller. Built into a highly rigid structural frame, this baseplate has a physical net weight of approximately 1.15 kg, ensuring a stable, low-vibration mounting foundation for all connected high-density modules.

Key Advantages

• Distributed I/O Architecture: Allows control expansion up to a maximum system cable length of 700 feet, letting engineers cover broad operational areas without adding redundant processing nodes.
• Physical Slot Keying Protection: Features 10 unique, specifically sized I/O channels that mechanically block incorrect modules from being seated, avoiding field damage during replacement.
• Built-In Ground Isolation: Equipped with an integrated hardware isolation feature designed to suppress ground loops and electrical interference caused by unbalanced ground conditions across long wire runs.
• Ruggedized Yet Manageable Build: The unit's structural composition strikes a perfect balance between industrial strength and ease of deployment, maintaining a net weight of 1.15 kg to avoid stressing internal enclosure panels or DIN rails.

Technical Specifications

Quick Installation Tips

• Safety Clearance: For safety reasons and to protect internal electronics, completely disconnect the PLC from the main power source before mounting the chassis or plugging in modules.
• Rack Address Setting: Configure the specific hardware rack address using the built-in DIP switches before firing up communication links to avoid master bus fault collisions.
• Hardware Exclusions: Do not attempt to mount PCM, ADC, BEM330, or CMM cards on this rack. These specialized modules are strictly designed to run on the primary CPU baseplate.
• Enclosure Mounting: Secure the 1.15 kg chassis using standard panel mounting holes. Mount it inside a clean control panel enclosure that provides full protection against water sprays and heavy airborne dust.

Technical FAQs

Q1: How many of these remote baseplates can a single Series 90-30 CPU handle?

A1: This depends directly on your processing model. Standard Series 90-30 CPUs (such as CPU 331, 340, and 341) support a maximum of 4 expansion racks. Higher-end processors (CPU 350 or above) can scale up to support a maximum of 7 remote baseplates.

Q2: Can this remote baseplate operate as a standalone module without a master PLC connection?

A2: No. The IC693CHS393 does not have a local CPU slot. It acts as a distributed I/O hub and must connect directly to a master PLC node or a personal computer equipped with a compatible PC interfacing card.

Q3: What purpose do the rightmost ports serve on this specific model?

A3: The right edge features a 25-pin female D-type connector alongside custom slot connections. This interface allows you to loop or daisy-chain downstream expansion sub-racks while keeping individual drops properly isolated.