Foxboro FBM216B P0927AJ HART Communication Input Module

Description

Foxboro FBM216B P0927AJ HART Communication Input Module

Detailed Product Information

The Foxboro FBM216B P0927AJ is a dedicated Communication Input Module purpose-built for seamless interoperability with HART-compliant industrial field instruments. It natively supports HART protocol versions 5, 6 and 7, and is equipped with 8 fully individually isolated input channels. The part number FBM216B P0927AJ has been officially superseded by the updated variant FBM216B RH927AJ, which maintains full backward compatibility with all existing system configurations. This module is engineered to deliver exceptional signal integrity and fault tolerance, making it a trusted choice for high-availability process control loops in power plants, chemical refineries and other heavy industrial facilities that demand uninterrupted, high-precision process signal acquisition.

P0927AJ

Technical Specifications

• Manufacturer: Foxboro
• Part Number: FBM216B P0927AJ (superseded by FBM216B RH927AJ)
• Product Type: HART Communication Input Module
• Supported HART Protocol Versions: 5, 6, 7
• Number of Field Device Channels: 8 individually fully isolated channels
• Communication Interface: Point-to-point, master/slave, asynchronous, half-duplex
• Communication Speed: 1200 baud, 2 messages per second
• Error Checking Mechanism: Parity check on each byte, plus 1 dedicated CRC check byte
• Current Input Sense Resistor: 280 Ω ±0.02%
• Total Nominal Input Resistance: 280 Ω (including redundancy adapters)
• Galvanic Isolation Rating: 600 V AC per channel
• Signal Conversion Technology: 15-bit Sigma-Delta high-resolution conversion
• Common Mode Rejection Ratio: >100 dB, effectively suppresses 50/60 Hz industrial power noise
• Module Dimensions: 102 mm (4 in) height, 45 mm (1.75 in) width, 104 mm (4.11 in) depth; 114 mm (4.5 in) height including mounting lugs
• Maximum Supported Termination Cable Length: Up to 30 m (98 ft)
• Supported Wiring Sizes: Solid/Stranded 0.2 to 4 mm², Stranded 0.2 to 2.5 mm², 24 to 12 AWG
• Redundancy Support: Paired redundant Master/Tracker configuration
• Operating Environment Certification: ISA Class G3 harsh industrial environment rated
• Condition: Brand new in stock
• Warranty: 2 years official manufacturer warranty
• Origin: USA

Compatibility & Installation Pitfalls

Compatibility

1. Natively interoperable with Foxboro I/A Series distributed control systems and matched FBM baseplate backplanes
2. Fully compatible with all HART 5/6/7 compliant smart field transmitters, sensors and actuators from mainstream industrial vendors
3. Seamlessly integrates with Foxboro Experion DCS engineering software for full HART device configuration, parameter mapping and diagnostic operations
4. Supports the dedicated redundant adapter RH924DT (supersedes P0924DT) for redundant module configuration
5. Matches with Foxboro certified termination assemblies, polyurethane or Low Smoke Zero Halogen (LSZH) termination cables

Installation Pitfalls

1. Never install the P0927AJ in a slot designated for non-HART FBM modules. Mismatched slot configuration will break the HART communication path and cause total HART smart device communication failure.
2. Do not connect field signals with voltage levels exceeding the 600 V AC isolation rating directly to the input channels. Uncontrolled overvoltage transients will break the channel galvanic isolation and permanently damage the module’s internal circuits.
3. Avoid routing HART signal cables connected to this module in the same cable tray as high-power variable frequency drive or AC motor power cables. Severe electromagnetic interference will corrupt HART digital communication and cause intermittent device dropouts.
4. Never perform hot-swap replacement while critical process control loops relying on HART smart transmitters are in automatic operation without pre-engaging the redundant partner. This action will cause momentary signal loss and trigger unplanned process trips.
5. Do not deploy P0927AJ modules with drastically different firmware revisions in the same redundant pair. Inconsistent firmware versions will cause asynchronous HART data timing and unexpected process variable mismatch during zero-bump redundant switchover.

P0927AJ

Standard Operating Procedure

1. Pre-installation verification: Inspect the module for physical damage on circuit boards and communication ports, confirm the FBM baseplate 24V DC power output is stable within the acceptable operating range.
2. Mechanical mounting: Align the module with the FBM baseplate, slide it smoothly into the designated FBM slot, and secure the mounting lugs to ensure full and reliable electrical contact with the backplane.
3. Field wiring termination: Connect all HART smart field devices to their corresponding designated channels on the , secure all cable connections properly and apply clear permanent labels for each channel with its corresponding HART device tag number.
4. Power-on configuration: Access the Foxboro I/A Series DCS engineering workstation, register the new module to the control system, configure HART device parameters, process variable mapping and redundant communication path settings.
5. Functional validation: Verify all connected HART smart field devices are fully recognized and communicating normally, confirm measurement accuracy meets system requirements, test the redundant FBM pair zero-bump switchover function under simulated fault conditions.
6. Commissioning handover: Export and save the final HART device configuration profile to secure backup, complete the installation and commissioning log, and confirm all HART communication links are operating normally before releasing the system to full operational service.

Typical Application Scenarios

• Petrochemical refining operations: Serves as the dedicated HART communication interface for 4-20mA+HART smart process transmitters in distillation columns, reactors and heat exchanger control loops.
• Chemical processing plants: Leverages its full per-channel galvanic isolation and >100dB common mode rejection to eliminate ground loop currents and preserve signal integrity in high-noise industrial environments.
• Power generation and utilities: Deploys in thermal power plant DCS control cabinets, providing high-accuracy HART signal acquisition for boiler pressure, temperature and flow smart transmitters.
• Oil and gas production facilities: Supports redundant Master/Tracker configuration to deliver zero-bump transfers for high-availability process safety and control loops in onshore and offshore production sites.
• Industrial manufacturing facilities: Enables full access to HART device diagnostic data, supporting predictive maintenance for smart field instruments to reduce unplanned downtime.

Recommended Supporting Components

• Foxboro dedicated FBM baseplate with matched DIN rail mounting accessories and redundant power supply unit
• Foxboro certified redundant adapter RH924DT (supersedes P0924DT) for redundant module configuration
• Shielded twisted-pair HART compliant field signal cables for interference-free HART digital communication
• Foxboro official I/A Series DCS engineering configuration software and HART device diagnostic toolkit
• Foxboro certified termination assembly and 37-pin / 25-pin D-subminiature termination cables

Related Part Number Recommendations

• FBM217: Foxboro enhanced HART communication input module, with additional 16 HART channels for high-density smart device connection scenarios
• FBM214: Foxboro standard analog input module, for non-HART 4-20mA analog signal acquisition applications
• FBM216: Foxboro legacy HART communication input module, for old-generation Foxboro DCS system retrofit and direct replacement
• FBM218: Foxboro HART analog output module, for HART smart valve positioner and actuator control applications
• FBM230: Foxboro fieldbus communication module, for FOUNDATION Fieldbus and Profibus field device connection scenarios