Configured for remote I/O rack expansion in PACSystems RX3i platforms, the GE Fanuc IC694CHS392 (IC694CHS392 Serial Expansion Baseplate) provides direct physical/electrical execution.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IC694CHS392 |
| Brand | GE Fanuc / Emerson |
| Origin | USA / As specified on label |
| Weight | 2.06 lbs (0.94 kg) |
| Dimensions | Standard RX3i 10-slot baseplate footprint |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 150 mA @ 5 VDC (internal backplane logic) |
| Total Slots | 10 I/O slots + 1 Power Supply slot |
| CPU Support | None (No CPU slot provided) |
| Compatible Modules | PACSystems RX3i Analog, Discrete, and Special-Function Modules |
| Expansion Interface | 25-pin female D-shell connector |
| Max Expansion Distance | 50 feet (15 meters) |
| Mounting Options | Panel mounting (front mounting / recessed mounting) |
| Hot-Swap Support | Hot insertion and removal not supported |
Backplane Bus Communication Velocity and I/O Density Scaling
The IC694CHS392 expands RX3i control system architecture by routing serial expansion signals from a main CPU rack to 10 additional option and I/O slots. Communicating across a 25-pin female D-shell interface over cable runs up to 50 feet (15 meters), the baseplate preserves high backplane bus communication velocity across high-density analog, discrete, and specialty I/O modules. Internal backplane logic operates at a current draw of 150 mA at 5 VDC, maintaining bus arbitration without requiring local CPU overhead.
Frequently Asked Questions
Q: Does the IC694CHS392 expansion baseplate support hot insertion and removal of I/O modules? A: No, hot insertion and removal of modules is not supported on the IC694CHS392 serial expansion baseplate.
Q: What is the maximum cable length supported for connecting the IC694CHS392 to the main PLC rack? A: The maximum expansion bus cable distance supported is 50 feet (15 meters) using the 25-pin D-shell expansion interface.
Field Installation Guidelines
- Mount the baseplate to a grounded metal enclosure backpanel using screws through all mounting locations, ensuring proper physical contact for enclosure grounding.
- De-energize the entire rack power supply before inserting or removing I/O modules or connecting serial expansion bus cables.
- Secure the 25-pin expansion cable to the female D-shell connector using integrated jack-screws to prevent cable loosening from operational vibration.
- Ensure total expansion cable routing does not exceed 50 feet (15 meters) and is run separately from high-voltage field wiring.
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