Key Technical Specifications
| Item | Specification |
|---|---|
| Model | CC-PCF901 |
| Common Part Numbers | 51405047-175, 51405047-176 |
| Manufacturer | Honeywell (USA origin) |
| Product Type | Control Firewall Module (CF9) |
| Compatible System | Experion PKS C-Series, C300 Controller |
| Mounting Base | CC-TCF901 IOTA (Control Firewall IOTA) |
| Ethernet Ports | 8 downlink + 1 uplink (10/100Base-TX RJ45) |
| Protocol | Honeywell FTE (Fault Tolerant Ethernet) |
| Power Rating | 0.112A @ 24V DC |
| Redundancy | Supports FTE A/B redundant paths, sub-1-second switchover |
| Topology | Ring, Star, Bus (FTE-native) |
| Optional Uplink | Fiber optic modules available (CC-FSMC01 SMF / CC-FMMC01 MMF) |
Product Introduction
If your C300 cabinet loses its FTE backbone, the entire control layer goes dark. That is where the CC-PCF901 lives — not as a controller, not as an I/O card, but as the FTE distribution and firewall hub sitting on the CC-TCF901 IOTA inside the C300 rack. It gives you eight downlink ports for C300 controllers, C-series FIMs, and other rack devices, plus one uplink port to the plant FTE backbone.Engineers keep this module in their spare parts cabinet because it is a single point of failure for cabinet-level FTE communication. The FTE protocol itself handles path switchover in under one second, which means a single cable pull or port fault does not trip the unit. That said, the CC-PCF901 is not a generic managed switch. It runs Honeywell’s proprietary FTE stack, and it only plays nice with the C-Series ecosystem. The revision suffix matters — 51405047-175 and 51405047-176 are not automatically interchangeable without checking your PKS release notes.
Quality SOP & Tech Pitfalls
The Lab Report (SOP):
Every CC-PCF901 goes through a visual inspection first — checking the Honeywell label, part number suffix, RJ45 port pins, and PCB condition. We then verify the 24V DC draw against the 0.112A rating with a bench supply and Fluke multimeter. If a compatible CC-TCF901 IOTA and C300 test rack are available, we perform a live power-on test to confirm LED boot sequence and port link activity. Firmware revision is logged from the label. Finally, the module is sealed in anti-static packaging with photos of the nameplate and serial number.The Engineer’s Warning (Pitfalls):
I have seen plants order a “CC-PCF901” and receive the wrong revision, only to discover the uplink port behavior or FTE firmware does not match their PKS release. The suffix is not cosmetic. Also, do not treat this as a plug-and-play Ethernet switch — the FTE A/B cabling color code matters. Yellow goes to FTE-A, green to FTE-B. Swap those, and you will spend hours chasing a “communication loss” alarm that is really just a mis-patched cable.
Installation & Configuration Guide
1. Pre-Installation ⚠️
- Follow plant lockout/tagout procedures. The CC-PCF901 runs on 24V DC from the rack power supply — verify the cabinet is safe to work on.
- Photograph every FTE cable connection on the existing module. Note which ports are used, which are spare, and the A/B color coding (yellow = FTE-A, green = FTE-B).
- Record the part number suffix (51405047-175 vs. 51405047-176) and any firmware label.
2. Removal
- Label each FTE cable before disconnecting.
- Release the module from the CC-TCF901 IOTA carefully — these are not DIN-rail clips; they slide into the IOTA backplane.
- Inspect the IOTA connector for bent pins or corrosion before inserting the replacement.
3. Installation
- Seat the new CC-PCF901 firmly into the CC-TCF901 IOTA. Ensure it is fully engaged — a half-seated module causes intermittent link faults that look like network problems.
- Reconnect FTE cables exactly as photographed. Yellow to FTE-A ports, green to FTE-B ports. Uplink goes to the designated uplink port.
- If fiber uplink modules (CC-FSMC01 / CC-FMMC01) are used, verify they are seated in the IOTA before powering up.
4. Power-On & Testing
- Restore 24V DC to the rack.
- Watch the LED sequence on the CC-PCF901 — normal boot should show power OK, then link activity on connected ports.
- Verify FTE communication from the Experion PKS workstation. Check that the C300 controller shows healthy on both FTE-A and FTE-B paths.
- If the module was replaced due to a fault, review the PKS alarm log for any lingering FTE path degradation events.
Compatible Replacement Models
| Replacement Model | Compatibility Tier | Notes |
|---|---|---|
| CC-PCF901 (same suffix, e.g., 51405047-175 → 51405047-175) | ✅ Drop-in | Exact match. No configuration change needed. |
| CC-PCF901 (different suffix, e.g., -175 → -176) | ⚠️ Verify First | Hardware is similar, but firmware and PKS release compatibility must be confirmed. Check Honeywell datasheet for your installed Experion version. |
| CC-PCF901 with fiber uplink option (CC-FSMC01 / CC-FMMC01) | ✅ Drop-in (hardware add-on) | Fiber modules plug into the IOTA, not the CC-PCF901 itself. Useful for long-distance uplink runs. |
| Newer Experion PKS C-Series firewall revisions | ⚠️ Software Compatible | May require PKS software update or reconfiguration. Not a blind swap. |
| Non-Honeywell Ethernet switches | ❌ Not Compatible | FTE is a Honeywell-proprietary protocol. A standard managed switch cannot replace the CC-PCF901. |
Frequently Asked Questions (FAQ)
Q: Is the CC-PCF901 a controller or a switch?
Neither, exactly. It is a control firewall and FTE distribution hub. It sits on the CC-TCF901 IOTA and manages FTE traffic between the C300 controller, C-series I/O modules, and the plant network. It does not execute control logic.Q: Can I use a regular Ethernet switch instead?
No. FTE is Honeywell’s proprietary fault-tolerant Ethernet protocol. A commercial switch does not understand FTE path management, priority handling, or broadcast storm suppression for the control layer.Q: What is the difference between 51405047-175 and 51405047-176?
Both are CC-PCF901 modules, but the suffix indicates a different hardware revision or firmware level. For a like-for-like replacement, match the suffix. If you must cross-grade, verify compatibility with your Experion PKS release first.Q: Does it support hot-swap?
The C-Series rack supports online module replacement under normal FTE redundancy, but you should still follow your plant’s change management procedure. Pulling the wrong cable on a non-redundant uplink can take down the cabinet’s communication.Q: What happens if the CC-PCF901 fails?
If both FTE paths run through a single failed CC-PCF901, the C300 controller and its I/O modules lose communication with the rest of the PKS system. That is why plants with redundant FTE architecture keep a spare on the shelf.Q: What warranty do you offer?
12 months. We ship with photos of the nameplate, part number, and serial number so you know exactly what you are receiving.Q: Can I install fiber uplink on an existing CC-PCF901?
The fiber optic modules (CC-FSMC01 for single-mode, CC-FMMC01 for multi-mode) plug into the CC-TCF901 IOTA, not directly into the CC-PCF901 PCB. Verify your IOTA has the available slot before ordering.
