Key Technical Specifications
| Parameter | Value |
|---|---|
| Slot Count | 10 |
| Mounting Standard | 19-Inch Rack |
| Communication | RS232, RS485 |
| Module Compatibility | PF3S CPU & I/O |
| Construction | Industrial Grade |
| Design | DIN Rail / Panel Mount |
| Bus Type | Parallel Backplane |
| Power Distribution | Integrated 24VDC Bus |
| Dimensions | 483mm x 130mm x 120mm |
| Compliance | IEC 61131-2 (verify revision) |
Product Introduction
IDEC PF3S-BP13 is a 10-slot backplane rack for the PF3S control series. It supplies power and a parallel data bus to CPU and I/O modules in a standard 19-inch enclosure.The unit supports RS232 and RS485 communication interfaces for system integration. Its industrial-grade construction ensures reliable operation in panel environments. (Always verify the exact revision code on the side label, as pin assignments can change between hardware versions.)
Installation & Configuration Guide
Preparation (10 min)
- Lock out and tag out all power sources.
- Verify the 19-inch rack is grounded.
- Gather a #2 Phillips screwdriver and torque driver.
Removal (5–10 min)
- Label all module positions and cables.
- Remove all modules from the backplane first.
- Unscrew the four corner mounting bolts.
- Lift the PF3S-BP13 straight out.
Installation (10 min)
- Align the PF3S-BP13 with the 19-inch rack rails.
- Secure with four M5 screws. Torque to 2.0 N·m.
- Reinstall modules, ensuring full backplane engagement.
Power-On & Test (10 min)
- Apply 24VDC to the backplane power terminals.
- Verify the power LED illuminates steadily.
- Check CPU module status for “No Fault” indication.
- Confirm communication with the PLC programming software.
Troubleshooting Quick Reference
| Symptom | Probable Cause | Action |
|---|---|---|
| No Power LED | Blown fuse or no input | Measure 24VDC at input terminals. Check internal fuse. |
| CPU Fault Light | Backplane communication error | Reseat CPU module. Inspect backplane connector for bent pins. |
| Intermittent I/O | Loose module connection | Power down. Reseat all modules. Check for debris in slots. |
| Overcurrent Shutdown | Shorted module or wiring | Remove all modules. Reinstall one-by-one to isolate fault. |
| Comm Failure | RS485 wiring error | Verify A/B polarity and termination resistor. |
Dimensions, Mounting & Wiring Notes
- H×W×D: 130mm × 483mm × 120mm (19-inch rack width)
- Mounting: Standard 19-inch rack with M5 hardware
- Terminal Notes: Use crimp ferrules on all power wires. Torque power terminals to 0.8 N·m. Do not over-torque; the plastic housing is not self-healing.
FAQ
Can I mix PF3S-BP13 with older PF3 racks?
No. The bus connectors and pinouts are different. They are not mechanically or electrically compatible.I’m seeing a flickering power LED. Is it the backplane?
Maybe. But 70% of the time, it’s a failing power supply or a shorted I/O module. Disconnect all modules and test the backplane alone first.What’s the max current this backplane can handle?
Check the label. Most PF3S-BP13 units are rated for 10A on the 24VDC bus. Exceeding this will trigger the internal protection or damage the traces.Do you test these before shipping?
Every unit gets a 24-hour burn-in on a live PF3S rack. We verify all 10 slots pass data and power. A test report is included. Function verified under test conditions.Is there a direct modern replacement?
IDEC has moved to newer platforms. Contact OEM support with your serial number for a migration path. Don’t assume a newer backplane will fit your existing modules.I dropped it during install. Is it toast?
Inspect the backplane connector pins closely. Even one bent pin can cause a short. If pins are straight and no cracks are visible, it might be fine, but test thoroughly.Can I use this for RS485 multi-drop?
Yes, but you must terminate the bus at both ends. The PF3S-BP13 has a jumper for the termination resistor. Forgot to set it once and spent two days chasing ghost errors.
