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Phone: +86 16626708626Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Foxboro / Invensys (now Schneider Electric) |
| Part Number | P0700HU |
| Product Type | Termination cable assembly (field wiring) |
| Compatible Module | FBM9 / FBM09 contact and DC I/O module |
| Related Variants | P0700AQ (FBM09A/14A, V. Mon/0.5 A), P0700AR (FBM09C/14C, Contact/0.5 A), P0700AS (FBM09B/14B), P0700AT (FBM09D/14D) |
| Connection Style | Direct termination cable per I/A Series FBM family |
| Weight | Approx. 0.41 kg |
| Platform | Foxboro I/A Series DCS |
| Status | Discontinued by manufacturer |
Product Introduction
The Foxboro P0700HU is the factory termination cable assembly for the FBM9 contact/DC I/O module in the Foxboro I/A Series DCS. It’s the pre-built field wiring interface between your plant signals and the FBM9’s I/O channels — screw terminations on the field end, the molded connector for the module on the other. Every FBM9 in your cabinet uses one, and after 20-plus years in a humid panel, the connector bodies crack, the screw terminals corrode, and the cable jacket goes brittle.
Why this part matters more than people expect: a damaged termination cable produces exactly the symptoms of a failing I/O module — intermittent channels, open circuits, phantom alarms — and techs replace the FBM9 first, every time. When the new module shows the same faults, the cable was the problem all along. It’s a low-cost part that prevents a high-cost misdiagnosis. Verify the exact variant before ordering — the FBM09 family has several termination cable types (P0700AQ/AR/AS/AT) that differ by module variant and signal type, and they are not interchangeable.
P0700HU
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| One or two channels intermittent, others fine | Corroded or loose screw termination at the field end | ✅ High | Wiggle-test the affected wires; measure loop continuity with the channel disconnected; inspect terminals for green/white corrosion | Clean and re-terminate — often fixes it without a parts swap |
| Whole module reads bad after module replacement | Damaged termination cable connector (cracked body, bent pins) | ✅ High | Inspect the molded connector for cracks and pin condition; ohm out suspect channels end-to-end | Replace the termination cable — the new module is fine |
| Phantom alarms on contact inputs | Cable jacket damage, moisture wicking into the assembly | ✅ High | Megger suspect channel wiring to ground (500 V); inspect jacket along the run, especially at cable tray penetrations | Replace cable; fix the moisture path |
| Channel reads open with field device verified good | Broken conductor inside the cable | ✅ High | Continuity check field end to module connector pin with the cable isolated | Replace the cable assembly |
| All channels dead | FBM9 module failure or carrier fault | ❌ Low | Check FBM9 status LEDs; try the module in another slot | Look at the module/carrier, not the cable |
| Wrong values after rewiring | Wires landed on wrong terminals after maintenance | ❌ Low | Verify every wire against the FBM9 wiring diagram, terminal by terminal | Correct the wiring — photograph before disconnecting next time |
Field reality check: when an aging I/A panel starts throwing intermittent I/O faults, the termination cables fail as often as the modules — more often, honestly, because they’re exposed to field-side moisture and physical handling at every maintenance turnaround. Test the cable before condemning the FBM9. If you’re stuck, contact technical support with the FBM variant and the termination cable part number off the cable’s own label, plus photos of the connector and termination end — we’ll help you isolate before you spend on the wrong part.
Frequently Asked Questions
Q1: Is the P0700HU compatible with all FBM09 variants?
No — and this is where most ordering errors happen. The FBM09 family has multiple termination cable types: P0700AQ for FBM09A/14A (V. Mon/0.5 A), P0700AR for FBM09C/14C (Contact/0.5 A), P0700AS for FBM09B/14B (V. Mon/10 mA), P0700AT for FBM09D/14D (Contact–10 mA), and the P0700HU for the FBM9. They look similar; they are not interchangeable. Read the exact module designation off your FBM’s front label and the part number off your existing cable’s label, and match both before ordering. If your labels are worn, send us photos and we’ll identify it before you pay.
Q2: Can I replace this cable with the panel live?
It depends on what those channels are doing. The cable itself is a field-side component, but disconnecting it breaks every channel it carries — so if those points feed anything safety-relevant or process-critical, the associated loop functions go away until you’re done. The safe play: inhibit or force the affected points in the DCS, notify operations, then swap. On a contact input run that’s purely monitoring, techs do swap them live — but confirm with your own safety procedures first. Don’t be the person who dropped a whole FBM9’s worth of signals mid-shift because nobody checked what was on those channels.
Q3: What condition is this unit in, and why is it cheaper than the Schneider channel?
The part is discontinued, so availability is New Surplus (factory-sealed stock when we can source it) or Refurbished. Every unit — new or refurbished — gets inspected: connector body checked for cracks, pins inspected for bending or corrosion, screw terminations verified for thread condition, and an end-to-end continuity check on every conductor. Refurbished units also get terminal cleaning and a full channel-by-channel ohm-out against the wiring diagram. Test results and photos available before purchase. It’s cheaper because we source through surplus channels — the hardware is genuine Foxboro/Invensys; the supply route is the difference.
Q4: What warranty do you offer?
A 1-year replacement warranty covering functional failure — broken conductors, bad terminations, connector faults under normal installation and use. Not covered: damage from field-side over-voltage events (lightning-induced surges on field runs are real), physical crush damage from improper cable routing, and terminal damage from over-torqueing. That last one is worth a warning: field terminations on these assemblies need modest torque — gorilla-handling a screw terminal until it strips is a self-inflicted failure we see regularly.
Q5: My whole FBM9 seems bad. Should I replace the cable at the same time?
Honestly — yes, especially if the panel is over 15 years old and the original cable has never been touched. The failure modes overlap so closely (intermittent channels, phantom opens) that if you’re pulling the module anyway, a fresh termination cable eliminates the cable as a variable for the next decade. The cable costs a fraction of the module and the labor to access both is the same labor. Buying the module alone, re-installing the 20-year-old cable, and getting the same fault back is a mistake you only make once.
Q6: Do you ship internationally, and how fast?
Worldwide via DHL, FedEx, or UPS, typically 1–2 business days for in-stock units. Termination cables are small and light — freight is cheap and stocking spares is easy, so plants often buy several at once to hold as cabinet spares. Every unit ships in anti-static bagging, coiled properly (no sharp bends at the connector strain reliefs), and boxed with a QC Passed label and inspection date. For a troubleshooting session already in progress, call us directly — we’ll confirm shelf stock and same-day cutoff before you commit.
