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Phone: +86 16626708626Description
3. Key Technical Specifications
| Parameter | Value |
|---|---|
| Channels | 8 isolated and independent |
| Input Range (each channel) | 0 to 20 mA dc (supports 4–20 mA transmitters) |
| Input Impedance | 61.5 Ω nominal |
| Accuracy | ±0.03% to ±0.05% of span typical (includes linearity) |
| A/D Conversion | Independent Sigma-Delta converter per channel |
| Isolation | Channel-to-channel and channel-to-ground galvanic isolation |
| Power Consumption | 7 W maximum |
| Heat Dissipation | 3 W maximum |
| Communication | Redundant 2 Mbps Module Fieldbus |
| Operating Temperature | –40 °C to +70 °C (module) |
| Relative Humidity | 5 to 95% non-condensing |
| Integration Period | Configurable |
| Common Mode Rejection | >100 dB at 50/60 Hz |
| Termination | Compatible with standard TAs and TAA01 adapters |
4. Product Introduction
The Foxboro FBM201 (P0914SQ) is an 8-channel channel-isolated analog input module for the I/A Series and EcoStruxure Foxboro DCS. Each channel accepts a 0–20 mA (or 4–20 mA) signal from a two-wire transmitter or self-powered source and performs high-accuracy A/D conversion using an independent Sigma-Delta converter.
Galvanic isolation protects the system from field-side ground loops and interference. The module communicates with the Field Control Processor or Fieldbus Communication Module over the redundant Module Fieldbus. It is the direct functional replacement for the legacy 100 Series FBM01 when used with non-HART devices and is fully compatible with existing termination assemblies via adapters.
- FBM201 P0914SQ
- FBM201 P0914SQ
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| Channel reads zero or open | Open field wiring or failed transmitter | ✅ High | Measure loop current at termination terminals | Verify transmitter power and field wiring first |
| Incorrect reading / drift | Wrong integration period or noise | ✅ Medium | Check configured integration time and CMR performance | Adjust integration period; verify shielding |
| All channels offline | Fieldbus communication or power issue | ✅ High | Check Module Fieldbus status and backplane power | Confirm redundant Fieldbus and FCM/FCP health |
| Channel Not OK / diagnostic fault | Open loop detection or hardware fault | ✅ High | Review module diagnostics in System Manager | Clear open-loop if intentional; replace if persistent |
| Intermittent errors | Loose termination assembly or connector | ✅ High | Reseat TA / TAA and inspect contacts | Clean and re-secure field terminations |
| Module not recognized | Incorrect baseplate or address conflict | ❌ Low | Verify baseplate type and module keying | Confirm proper mounting and configuration |
If symptoms persist, capture module status LEDs, diagnostic logs from the control processor, software revision, and photos of the module and termination assembly, then contact technical support.
6. Frequently Asked Questions (FAQ)
Q: What is the difference between FBM201 and the older FBM01? A: The FBM201 is the modern 200 Series channel-isolated replacement for the 100 Series FBM01. It offers improved isolation, accuracy, and diagnostics while maintaining functional compatibility for 0–20 mA inputs.
Q: Are the channels isolated? A: Yes. All eight channels are individually galvanically isolated from each other and from the system ground.
Q: Can it accept 4–20 mA transmitters? A: Yes. The 0–20 mA range fully supports standard 4–20 mA two-wire transmitters.
Q: Why is the price lower than a factory-new unit from Schneider Electric? A: This is New Original / New Surplus stock—genuine Foxboro parts that have never been installed in a running system. Units ship with a 1-year warranty after functional verification.
Q: What termination assemblies are compatible? A: Standard TAs for the FBM201 family and Termination Assembly Adapters (such as TAA01) that allow reuse of existing FBM01 field wiring.
Q: Does it support HART? A: No. For HART capability use the FBM214b or similar HART-enabled modules.
Q: What is the typical lead time and warranty? A: Units are normally in stock for same- or next-day shipment. All modules carry a 1-year warranty against defects in materials and workmanship.
