The GE Fanuc IC693CHS391, also cataloged as the IC693CHS391 Modular CPU Baseplate, operates as a dedicated hardware component for local backplane signal routing and module power distribution within Series 90-30 platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IC693CHS391 |
| Brand | GE Fanuc / Emerson |
| Origin | USA / As specified on label |
| Weight | 2.06 lbs (0.94 kg) |
| Dimensions | Standard Series 90-30 10-slot baseplate footprint |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 250 mA to 420 mA @ 5 VDC (backplane load) |
| Total Slots | 10 Slots |
| Slot Configuration | 1 Power Supply Slot (Unnumbered), 1 CPU Slot (Slot 1), 9 I/O Slots (Slots 2–10) |
| System Permitted Quantity | 1 CPU Baseplate per system (Rack address 0) |
| Expansion Interface | 25-pin female connector for expansion bus cable |
Backplane Bus Communication Velocity and I/O Density Scaling
The IC693CHS391 features an integrated local electronic backplane designed to distribute high-velocity communication signals and logic power across 10 modular card slots. Slot 1 is hardwired for the system CPU processor or specialty plug-in modules, while Slots 2 through 10 provide scalable I/O density for discrete, analog, and option modules. The rightmost end of the backplane includes a 25-pin female D-shell connector to extend communication signals to expansion or remote baseplates. System rack address 0 is permanently assigned to this baseplate to preserve deterministic bus arbitration across the entire controller setup.
Frequently Asked Questions
Q: How many IC693CHS391 baseplates can be configured within a single PLC system?
A: Only one (1) IC693CHS391 Modular CPU Baseplate can be installed per system. Additional chassis added to the system bus must be designated as expansion or remote I/O baseplates.
Q: What power draw does the baseplate logic require from the system power supply?
A: The baseplate onboard logic circuit requires a current load ranging from 250 mA to 420 mA at 5 VDC from the installed power supply module.
Field Installation Guidelines
- Mount the baseplate directly onto a flat, grounded metallic panel surface using screws placed through all four corner mounting holes to secure mechanical stability and frame grounding.
- Install the power supply module exclusively into the far left unnumbered slot and place the main CPU module strictly into Slot 1 prior to energizing the chassis.
- Connect external expansion bus cables to the right-hand 25-pin female connector, taking care not to exceed cable bend radius limits or run cables parallel to high-voltage field wiring.
- Verify that module edge connectors are aligned vertically before firmly pressing each card into the backplane bus header to avoid socket pin damage.
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