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3. Key Technical Specifications
- Product Type: Compression Termination Assembly (TA)
- Compatible Modules: FBM214 / FBM216 (HART analog input)
- Mounting: DIN rail, supports 32 mm (1.26 in) and 35 mm (1.38 in)
- Terminal Style: Compression polyamide (PA) with ring lug option
- Housing Material: Polyvinyl chloride (PVC)
- Net Weight: 0.43 kg (0.95 lb)
- Shipping Weight: Approximately 1.5 kg
- Dimensions (typical): Compact DIN-rail form factor (exact outline per PSS drawing)
- Connection: Field wiring to FBM via standard termination cable (37-pin class)
- Isolation / Protection: Passive assembly; channel isolation provided by associated FBM
- Operating Environment: Matches I/A Series cabinet ratings (typically 0 °C to +60 °C continuous)
- Certifications: Compatible with UL/cUL and CENELEC listings for the associated FBM subsystem
4. Product Introduction
The Foxboro P0916BX is a DIN-rail mounted compression termination assembly used with FBM214 and FBM216 HART communication input modules in the I/A Series DCS. It provides the organized field-wiring interface between process transmitters and the Fieldbus Module, handling 4–20 mA signals with superimposed HART data.
Engineers select the P0916BX when they need a genuine OEM terminal base that accepts standard ring-lug or compression terminations, mounts on either 32 mm or 35 mm DIN rail, and allows FBM replacement without disturbing field cables. Correct matching of this TA to the FBM avoids signal integrity problems and keeps the node within the original system design envelope.
- P0916BX
- P0916BX
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No analog or HART signal from channels | Open or high-resistance field wiring at TA terminals | ✅ High | Measure continuity from field device to TA screw/ring-lug points; check torque on compression terminals | Re-terminate wires; verify correct wire gauge and ferrule if used |
| Intermittent readings or noise | Loose terminal, corroded contact, or poor shield termination | ✅ High | Visual inspection + wiggle test while monitoring live values; check for oxidation on ring lugs | Clean terminals, re-torque to manufacturer spec, ensure single-point shield grounding |
| FBM reports channel faults after TA swap | Wrong TA type installed (e.g., non-HART or different pinout) | ✅ High | Confirm part number stamped on TA matches P0916BX and is listed for FBM214/216 | Install only the correct TA; do not substitute similar-looking P0916xx assemblies |
| All channels dead, FBM LEDs normal | Termination cable disconnected or damaged between TA and FBM | ❌ Low (cable issue) | Reseat 37-pin cable; inspect for bent pins or broken conductors | Replace cable if damaged; power cycle after reseating |
| Ground loop or common-mode voltage errors | Improper shield or ground connection at TA | ✅ Medium | Measure voltage between shield and ground; verify single-end grounding practice | Correct grounding per I/A Series installation guidelines |
| Physical damage or cracked housing | Mechanical stress or incorrect DIN-rail clip engagement | ✅ Medium | Visual inspection of housing and mounting clips | Replace TA; do not attempt field repair of cracked body |
If symptoms persist after these checks, capture FBM diagnostic buffer, take clear photos of the TA wiring and part number, and contact technical support with the data.
6. Frequently Asked Questions (FAQ)
Q: Is the P0916BX hot-swappable? A: The termination assembly itself stays in place. You can remove and replace the associated FBM214 or FBM216 without disconnecting field wiring, provided the system design allows it. Always follow plant lock-out procedures and verify the specific FBM supports live removal.
Q: What FBM does the work with? A: It is the compression termination assembly specifically listed for FBM214 and FBM216 (8-channel 4–20 mA + HART input modules). Using it with any other FBM risks incorrect pinout or missing signal conditioning and is not supported.
Q: Why is this unit priced lower than a factory-new order from Schneider? A: This is New Original / New Surplus stock. It is genuine Foxboro material that has never been installed, stored under controlled conditions, and carries a full functional verification. It is not refurbished or repaired.
Q: Do I need to change any configuration or firmware when replacing the TA? A: No. The is a passive wiring interface. All configuration, HART messaging rates, and channel scaling live in the FBM and the control processor. Simply match the terminal wiring to the existing drawings.
Q: What is the warranty and lead time? A: Standard coverage is 1 year. Units are typically in stock and ship within a few business days. Confirm current availability at time of order.
Q: Can I use ring-lug or compression terminals interchangeably? A: The supports both styles as designed. Follow the torque values in the I/A Series termination assembly documentation and use the correct ferrules or lugs for your wire size. Mixed or under-torqued connections are a common source of intermittent faults.
Q: Is this model still supported or is it obsolete? A: The remains in the Foxboro I/A Series catalog for FBM214/216 installations. Stock is limited in the aftermarket, so lead times can vary; order early if you are planning a multi-node outage.
