Secure now IC693CHS391 GE Fanuc Expansion Baseplate
The IC693CHS391 is a high-capacity 10-Slot Expansion Baseplate designed by GE Fanuc to scale the architecture of the Series 90-30 Programmable Logic Controller system. When industrial control applications grow beyond the limits of a standard CPU baseplate, the IC693CHS391 provides the essential physical infrastructure to add up to 10 additional discrete, analog, or specialty I/O modules. Connected via a high-speed 25-pin D-shell expansion cable, this chassis seamlessly extends the system’s backplane bus without introducing latency, maintaining absolute deterministic control over the entire automated network. It requires a dedicated power supply module in its leftmost slot to provide stable backplane power to the installed I/O cards.
Technical Specifications
- Part Number: IC693CHS391
- Manufacturer: GE Fanuc
- System Architecture: Series 90-30 Expansion / Remote
- Total Slots: 11 Slots (1 for Power Supply, 10 for I/O Modules)
- Connection Type: 25-pin D-shell expansion port
- Mounting Mechanism: Panel mount compatible
- Addressing: Configurable via hardware DIP switches
Expert Tips for Hardware Configuration
Proper addressing is crucial when integrating the IC693CHS391 into an existing Series 90-30 network. The baseplate number (Rack Number) must be set using the DIP switch assembly located on the backplane circuit board before the power supply is installed. A duplicate rack number will cause a fatal configuration mismatch, preventing the CPU from transitioning to RUN mode. Additionally, ensure that the maximum cable length between expansion baseplates does not exceed GE Fanuc’s specified limits (typically 15 meters for expansion setups) to prevent data packet loss across the parallel bus.
Grounding and Environmental Maintenance
The integrity of the Series 90-30 system relies heavily on the grounding of the baseplates. The IC693CHS391 must be bonded to the main control cabinet’s earth ground using a thick, braided copper strap to minimize electrical noise and protect sensitive logic components from electrostatic discharge (ESD). Periodically inspect the backplane connectors for dust buildup or corrosion, especially in facilities with high humidity or airborne chemical particulates. Keeping the slots populated or covered with blanking plates helps maintain the internal cleanliness of the chassis.
System Continuity and Integration
This 10-slot chassis serves as the ideal foundation for expanding your PLC capabilities, allowing you to simultaneously host analog control interfaces like the IC693ALG391 and high-current discrete switching units such as the IC693MDL940 within a single, unified rack.
Frequently Asked Questions (FAQs)
Q: Can the IC693CHS391 hold a CPU module?
A: No, this is strictly an expansion baseplate. CPU modules can only be installed in the primary CPU baseplates (such as the CHS397 or CHS392).
Q: How many IC693CHS391 expansion baseplates can I add to one system?
A: The GE Fanuc Series 90-30 architecture supports up to seven expansion or remote baseplates per CPU, depending on the specific CPU model in use.
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