GE IC693CHS391K PLC Baseplates

The GE Fanuc IC693CHS391K, also cataloged as the IC693CHS391 10-slot modular CPU baseplate, operates as a dedicated hardware component for backplane bus distribution and physical module housing within GE Fanuc Series 90-30 PLC systems. This chassis accepts one power supply module, one CPU module in slot 1, and up to nine I/O or option modules across slots 2 through 10. Internal power line traces deliver regulated voltage rails directly to attached circuit cards without requiring external interconnect jumpers.

Hardware Specifications

Backplane Bus Communication and I/O Density Scaling

The IC693CHS391K rack architecture establishes backplane bus communication velocity using high-density gold-plated card-edge connectors. The parallel data bus structure handles high-frequency memory exchange between the central processing unit and discrete/analog interface cards. Modular I/O density scaling allows up to 9 functional field modules per rack frame, supported by internal signal trace shielding that maintains signal integrity across all channel slots. Integrated firmware flash compatibility across installed option modules ensures full synchronization with the host CPU execution loops.

Frequently Asked Questions

Q: What is the maximum current draw supported on the internal +5 VDC bus line?

A: The baseplate backplane consumes an internal operational current of 420 mA at 5 VDC, while delivering the remaining system power bus budget to installed I/O and CPU modules via the power supply interface slot.

Q: Can expansion racks be daisy-chained from the IC693CHS391K baseplate?

A: Yes, using the right-hand 25-pin female expansion bus connector. The maximum total expansion cable distance must not exceed 50 feet (15 meters) for standard expansion racks or 700 feet (213 meters) when utilizing remote baseplates.

Field Installation Guidelines

1. Verify that all AC and DC incoming power feeds are locked out before securing the baseplate to the enclosure panel.
2. Mount the chassis on a flat, grounded metallic surface using four M4 pan-head screws through the designated corner mounting slots.
3. Connect the primary panel earth ground strap to the dedicated grounding terminal stud located on the left side of the baseplate frame.
4. Ensure the right-hand 25-pin expansion bus port uses a male-to-female shielded cable terminated with a IC690ACC901 bus terminator block if it represents the last physical node.
5. Align and insert the power supply module into the leftmost unnumbered slot before populating CPU and I/O card slots.