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The FOXBORO FBM232 P0926GW is a high-performance 8-channel analog output module from Emerson’s I/A Series distributed control system, engineered for precision control in critical process applications. Designed for reliability in harsh industrial environments, this module delivers isolated 4–20 mA current outputs with integrated HART 7 protocol support, enabling simultaneous analog control and digital communication with field devices. The FBM232 P0926GW features active HART multiplexing across all channels, allowing real-time diagnostics and configuration of smart transmitters without interrupting control signals. Its robust construction includes conformal-coated circuitry and galvanic isolation (1500 VAC channel-to-channel), ensuring immunity to ground loops and electrical noise in petrochemical, power generation, and refining applications. The “P0926GW” suffix denotes enhanced EMC protection and screw terminal connectivity, providing superior signal integrity where space constraints demand compact Field Mounted Assembly (FMA) installations.
FOXBORO FBM232 P0926GW
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | FOXBORO FBM232 P0926GW |
| Manufacturer | Foxboro (Emerson) |
| Product Type | Analog Output Module |
| Output Channels | 8 (isolated) |
| Output Signal | 4–20 mA + HART 7 |
| Accuracy | ±0.05% of span |
| Update Rate | 10 ms per channel |
| Load Capacity | 0–750 Ω per channel |
| HART Compliance | HART 7 (FSK/Bell 202) |
| Isolation | 1500 VAC channel-to-channel, 500 VAC channel-to-backplane |
| Power Consumption | 1.8W @ 5VDC (backplane) |
| Operating Temperature | -40°C to +70°C (-40°F to +158°F) |
| Terminal Type | Removable screw terminal (AWG 12–24) |
| EMC Immunity | IEC 61000-4-4 Level 4 (4 kV EFT), IEC 61000-4-2 Level 4 (8 kV contact) |
| Safety Certifications | ATEX/IECEx Zone 2, SIL 2 |
| Backplane Interface | FBM I/O Bus (10 Mbps) |
Main Features and Advantages
Precision Control & Diagnostics:
Active HART Multiplexing: Simultaneous analog output and digital HART communication on all 8 channels without signal degradation.
Automatic Loop Compensation: Self-adjusts for line resistance changes up to 750Ω, maintaining ±0.05% accuracy.
Channel-Level Fault Reporting: Isolates failures to individual outputs with LED indicators and system alerts.
Robust Connectivity:
Removable screw terminals (“P0926GW” suffix) enable rapid replacement without rewiring.
EMI/RFI filtering exceeds industrial standards for noise-prone environments (e.g., VFD-heavy plants).
Hot-swappable design supports maintenance without system shutdown (redundant power required).
Safety Integration:
SIL 2 certification for safety instrumented systems (SIS).
Intrinsic safety barriers compatible via IS isolators.
Application Field
The FBM232 P0926GW excels in mission-critical control loops:
Refining: Control valve positioning for FCCU reactor temperature and crude column pressure.
Chemical Processing: Precise dosing pump control in batch reactors with HART-enabled valve positioners.
Power Generation: Feedwater regulation in boilers and SO₂ scrubber reagent control.
Pharmaceutical: Sterile bioreactor nutrient feed control with audit trail via HART data.
Pipelines: Mainline valve throttling for leak detection systems (LDS).
FOXBORO FBM232 P0926GW
Related Products
FOXBORO FBM217 P0917GH: 8-channel analog input module (complementary to FBM232).
FOXBORO P0924GX: Field termination assembly for DIN-rail mounting.
FOXBORO FBM242: Digital output module for interlock systems.
EMERSON HART 475 Field Communicator: For FBM232 channel configuration.
FOXBORO FBM204: Redundant controller module for fault-tolerant systems.
EMERSON IS Barrier 9320: Intrinsic safety isolator for Zone 0 deployments.
FOXBORO P0400SV: Power supply module for FMA chassis.
FOXBORO I/A Series CP60: Control processor for module integration.
