GE IC693CHS392F Series 90-30 PLC Baseplates

Configured for passive I/O rack expansion in Series 90-30 platforms, the GE IC693CHS392F (IC693CHS392 Expansion Baseplate) provides direct physical/electrical execution. This 5-slot expansion chassis extends backplane power and data buses from the primary CPU rack to attached discrete, analog, and specialty modules via a dedicated 50-pin expansion cable interface.

Hardware Specifications

Backplane Bus Communication & IO Density Scaling

The passive expansion rack carries logic signals and system power across the parallel backplane bus communication velocity architecture, maintaining high-speed signal propagation between the remote CPU and installed field cards. Designed to optimize rack layout and I/O density scaling, the 5-slot baseplate features mechanical keying mechanisms on each slot to prevent misinsertion of modules. Built-in bus line termination and shielded multi-conductor expansion pathways ensure firmware flash compatibility and stable scan cycles without signal degradation or timing jitter across extended rack distances.

Frequently Asked Questions

Q: Can the IC693CHS392F baseplate accept a Series 90-30 CPU module directly?

A: No, expansion baseplates do not support CPU modules. Slot 1 is reserved for a standard Series 90-30 power supply module, while the remaining five slots host I/O and specialty modules.

Q: What is the maximum permitted cable distance between the main CPU baseplate and this expansion baseplate?

A: The baseplate connects via a 50-pin expansion cable and can be located at a maximum distance of up to 50 feet from the primary CPU rack. Shielded cabling is required for runs exceeding 25 feet.

Q: Does the IC693CHS392F passive backplane contain internal active components or battery backup circuits?

A: No, the baseplate contains a completely passive printed circuit board without active integrated circuits or internal energy storage devices.

Field Installation Guidelines

• Ensure primary power to the entire PLC system is de-energized before mounting the baseplate or connecting expansion cables.
• Securely mount the steel chassis to the panel enclosure using all provided mounting tabs to establish a rigid grounding path.
• Fully seat and screw-latch the 50-pin expansion cable connector to prevent intermittent backplane communication faults.
• Verify that a standard Series 90-30 power supply module is installed in the left-most power slot to feed 5 VDC to the backplane lines.
• Maintain adequate vertical clearance (at least 76 mm) above and below the baseplate to allow proper convective thermal dissipation.