GE IC693CHS398F CPU Baseplates

The GE IC693CHS398F, also cataloged as the IC693CHS398 5-Slot Base Unit (PLC Chassis), operates as a dedicated hardware component for localized module interconnections and backplane power distribution within GE Series 90-30 platforms. Designed to accept a dedicated CPU module in Slot 1 alongside power supply, discrete/analog I/O, and communication modules in Slots 2 through 5, the passive backplane distributes 5 VDC and 24 VDC power via internal bus bars across a 5-slot footprint.

Hardware Specifications

Deterministic Network and High-Density Expansion

The IC693CHS398F chassis structure maintains high backplane bus communication velocity across its passive bus line architecture. Priority backplane routing at Slot 1 ensures deterministic CPU processor cycles, while Slots 2 through 5 enable scalable I/O density scaling. The passive backplane contains no active electronic components, assuring firmware flash compatibility and transparent address mapping for all installed Series 90-30 modules across local and extended multi-rack configurations.

Frequently Asked Questions

Q: What modules are permitted in Slot 1 of the IC693CHS398F baseplate?

A: Slot 1 is a dedicated CPU position featuring priority backplane bus access, designed specifically to house Series 90-30 central processing units.

Q: What are the backplane current ratings for power distribution across this chassis?

A: The internal power bus bars distribute up to 2.5 A at 5 VDC for logic circuits and 1.0 A at 24 VDC for field I/O requirements from the system power supply module.

Q: Can the baseplate be mounted in high-vibration control panel environments?

A: Yes, in addition to standard 35 mm DIN-rail mounting, the baseplate features four M4 screw mounting holes for rigid panel attachment in high-vibration applications.

Field Installation Guidelines

1. Mount the baseplate chassis inside an industrial cabinet using four M4 panel screws or snap securely onto a 35 mm DIN rail.
2. Connect a heavy-gauge earth conductor from the cabinet protective earth (PE) bus directly to the dedicated M4 grounding stud on the chassis.
3. Ensure the system power supply module is de-energized before inserting or removing any CPU, I/O, or communication modules.
4. Seat modules into slots from left to right, engaging top and bottom retaining clips to lock each card into the backplane connector.
5. Keep signal cables routed separately from high-voltage wiring to preserve low-noise operational integrity across the backplane bus.