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Phone: +86 16626708626Description
Key Technical Specifications
| Parameter | Specification Value |
| Input Channels | 8 channel-isolated thermocouple/mV inputs |
| Reference Junction Channel | 1 isolated RTD reference junction compensation channel |
| Input Voltage Range | −10.5 to +69.5 mV DC (0 to 64,000 raw counts) |
| A/D Conversion | Sigma-Delta A/D conversion on per-channel basis |
| Update Rate | 25 ms per channel (software-configurable integration period) |
| Accuracy | ±0.03% of span (±24 µV) at 25°C |
| Channel Isolation | 600 V AC for 60 seconds (channel-to-channel and channel-to-ground) |
| Differential Input Impedance | 10 MΩ nominal |
| Burnout Detection | Integrated up-scale thermocouple burnout detection |
| Power Consumption | 3.0 W maximum at 24 V DC |
| Operating Temperature | −40°C to +70°C (−40°F to +158°F) |
| Mounting | Standard 200 Series DIN-rail baseplate mounting |
Product Introduction & Supply Chain Strategy
The Foxboro FBM202 (P0926EQ) is an 8-channel isolated thermocouple and millivolt input module built for Foxboro I/A Series control systems. It interfaces field temperature sensors directly to the host control processor while providing dedicated reference junction compensation.
Maintaining this card as New Surplus inventory lowers Total Cost of Ownership (TCO) compared to standard OEM lead times and factory pricing. Plant operators avoid the operational risks of refurbished units, such as drift or relay wear, while securing immediate buffer stock for unexpected field failures.
- FBM202 P0926EQ
- FBM202 P0926EQ
Installation & Configuration Guide
Stage 1: Pre-Installation (Prep & Safety)
- Initiate plant lock-out/tag-out (LOTO) protocols on connected 24 V DC field loop feeds.
- Put on a grounded ESD wrist strap before handling the replacement module.
- Record existing module LED indicators and photograph the baseplate position and wiring.
Stage 2: Removal
- Unlatch the retaining screws on the top and bottom of the module faceplate.
- Pull the module straight outward from the baseplate slots to prevent pin bending on the backplane connector.
- Inspect the empty baseplate position for debris or contamination.
Stage 3: Installation (Clone & Seat)
- Confirm that the replacement part number matches P0926EQ / RH916AA exactly.
- Slide the module along the baseplate card guide rails until the rear connectors contact the backplane.
- Apply firm, direct pressure to seat the module, then torque retaining screws to 0.5 Nm.
Stage 4: Power-On & Testing
- Confirm primary 24 V DC supply rails output between 21.6 V DC and 26.4 V DC.
- Monitor the front status LEDs: verify the red ERR LED turns off and the green RUN LED lights solid.
- Check the DCS software environment to verify temperature channels report valid live engineering values without open-circuit alarms.
Firmware/Software Versions & Upgrade Notes
- System Compatibility: Compatible with Foxboro I/A Series system software versions 6.x through 8.x and Control Processors (FCP270 / FCP280).
- Auto-Configuration: Operational software loads directly to the FBM202 from the host Control Processor across the redundant 2 Mbps Fieldbus network during initialization.
- SysDef Matching: Ensure the system definition file (SysDef) matches the physical hardware revision letter on the module label.
- Firmware Caution: Do not reflash or update host control drivers during a routine card replacement; doing so risks dropping adjacent field channels on the shared baseplate.
Frequently Asked Questions (FAQ)
Is this Foxboro FBM202 module genuine New Surplus?
Yes. All Foxboro P0926EQ modules supplied under this channel are 100% genuine, unused OEM stock. Units undergo ESD-safe inspection and static testing prior to shipment.
Why choose New Surplus over refurbished or pulled parts?
Refurbished units often suffer from internal thermal aging and degraded protection diodes from prior plant usage. Sourcing New Surplus provides factory-level reliability and prevents secondary shutdown costs caused by premature failure.
Can I hot-swap the module while the system is powered?
Yes. The supports hot-swapping on live baseplates without interrupting communication to neighboring modules. Grounded wrist straps must be worn during extraction and insertion.
Does the support built-in cold junction compensation?
Yes. The module includes one isolated RTD reference junction channel configured specifically for terminal temperature sensing on companion termination assemblies.
How does the module handle a broken sensor wire?
The features automated upscale burnout detection. If a thermocouple wire breaks or disconnects, the module forces the digital signal upscale to trigger immediate alarm logic in the control processor.
What warranty is provided with this unit?
Each New Surplus Foxboro comes with a standard 1-year replacement warranty covering operational hardware defects under normal operating conditions.
