Foxboro FBM220 Product Description

The Foxboro FBM220 (part number P0917HA) is a high-performance, high-density 16-channel analog input/output (I/O) module in the Foxboro Compact 200 Series, engineered for the Foxboro I/A Series and Foxboro Evo™ distributed control systems (DCS). Designed as a precision control and signal conditioning module, it integrates 8 isolated analog input channels and 8 isolated analog output channels into a single compact, rugged unit, delivering exceptional accuracy and reliability for process monitoring and control. Built for harsh industrial environments and high-availability applications, the FBM220 serves as the critical interface between field devices—such as transmitters, sensors, valves, and actuators—and the DCS controller, supporting seamless integration of analog signals across diverse process industries.

The FBM220 provides 8 fully isolated analog inputs and 8 fully isolated analog outputs, with channel-to-channel and channel-to-ground galvanic isolation to eliminate ground loops, electrical crosstalk, and transient voltage damage. Inputs accept standard 4–20 mA DC current signals or 0–5 V DC voltage signals, while outputs generate 4–20 mA DC current signals, compatible with a wide range of field transmitters, sensors, and control actuators.

Engineered for precision, the module offers ±0.05% full-scale accuracy at 25°C, ensuring highly reliable signal measurement and control. It features a fast, configurable response time (10–100 ms) and 16-bit resolution for both input and output channels, enabling precise capture and transmission of analog signal variations critical for tight process control.

Communication with the DCS controller (FCP/ZCP) or fieldbus communication module (FCM) uses a redundant 2 Mbps HDLC fieldbus with automatic A/B path failover, preventing data loss during communication path disruptions. The module supports hot-swap capability, allowing online replacement without shutting down the DCS or interrupting process control—essential for continuous, high-availability operations.

Rugged construction includes an extruded aluminum enclosure and conformal-coated printed circuit board (PCB), rated to withstand dust, moisture, vibration, and extreme temperature fluctuations. It complies with ISA S71.04 Class G3 harsh environment standards and carries intrinsic safety certifications (ATEX/IECEx) for deployment in hazardous, explosive atmospheres common in oil, gas, and chemical industries.

Front-panel LED indicators provide clear visual status for power, communication, and channel activity, enabling quick on-site troubleshooting without specialized tools. Built-in advanced diagnostics continuously monitor signal quality, power status, and communication health, providing real-time fault detection and alerts to minimize unplanned downtime.

Manufacturer: Foxboro (Schneider Electric)Compatible Systems: Foxboro I/A Series DCS, Foxboro Evo™ DCSModel/Part Number: FBM220 (P0917HA)Channel Configuration: 8 isolated analog input (AI) channels, 8 isolated analog output (AO) channelsInput Signal Types: 4–20 mA DC (current), 0–5 V DC (voltage), user-selectableOutput Signal Type: 4–20 mA DC (current)Accuracy: ±0.05% full scale (at 25°C)Resolution: 16-bit (both AI and AO)Response Time: Configurable, 10 ms to 100 msIsolation: 2500 V AC (channel-to-channel, channel-to-chassis)Communication: Redundant 2 Mbps HDLC fieldbus, A/B path redundancy with automatic failoverPower Supply: 24 V DC (operating range: 18–32 V DC, ±5% tolerance); max power consumption 5 WOperating Temperature: –20 °C to +70 °C (–4 °F to +158 °F); extended range –40 °C to +85 °C for hazardous areasStorage Temperature: –40 °C to +85 °C (–40 °F to +185 °F)Relative Humidity: 5%–95% non-condensingAltitude: –300 m to +3,000 m (–1,000 ft to +10,000 ft)Enclosure: Extruded aluminum, conformal-coated PCB; IP20 ratingDimensions: Approximately 102 mm × 45 mm × 104 mm (4.0 in × 1.8 in × 4.1 in)Weight: 0.3 kg (0.66 lb)Certifications: CE, UL, CSA, ATEX, IECEx, ISA S71.04 Class G3; compliant with EMC Class A (IEC 61000-6-2)

The FBM220 is widely deployed across process industries requiring high-density, high-precision analog I/O for critical process monitoring and control. In chemical and petrochemical plants, it interfaces with pressure, level, flow, and temperature transmitters on reactors, distillation columns, and pipelines, while controlling modulating valves, variable-speed drives, and actuators for precise process regulation.

In oil and gas facilities—including refineries, offshore platforms, and gas processing stations—it monitors wellhead pressure, pipeline flow, and storage tank level transmitters, and controls choke valves, separator actuators, and compressor capacity controls, ensuring safe, efficient hydrocarbon production even in hazardous explosive atmospheres.

In power generation plants, the FBM220 connects to boiler temperature/pressure sensors, turbine vibration/speed transmitters, and generator excitation control signals, while controlling steam valves, feedwater pumps, and cooling fan actuators for reliable, efficient power plant operation.

In water and wastewater treatment plants, it interfaces with pH, dissolved oxygen, turbidity, and level transmitters, and controls dosing pumps, gate valves, and aeration blowers for precise, compliant treatment process control.

In pharmaceutical, food and beverage, and fine chemical industries, the FBM220’s high accuracy, intrinsic safety, and regulatory certifications make it suitable for controlled, hygienic, and hazardous processes requiring strict signal integrity and safety compliance, while its compact size and hot-swap capability minimize downtime in space-constrained cabinets.

The FBM220 installs on standard DIN rails in Foxboro I/A Series or Evo™ DCS cabinets, mounting on a dedicated Compact 200 Series baseplate for power distribution and redundant fieldbus communication with the DCS backplane. Field wiring connects to a compatible termination assembly (TA), such as the P0400YE terminal board, which provides surge protection, signal conditioning, and field device connection points, supporting both local and remote wiring configurations.

Standard shielded industrial cables are recommended for field wiring, with proper grounding to optimize noise immunity and ensure reliable signal transmission. Analog input channels wire to field transmitters (loop-powered or externally powered), while analog output channels connect to control valves, actuators, or indicators—loop power is supplied via the TA or external 24 V DC sources as required.

System configuration is performed via Foxboro DCS software, enabling users to select input signal types (current/voltage), calibrate input/output ranges, set response time, and configure redundant communication modes. The module is plug-and-play compatible with existing Foxboro systems, requiring minimal on-site setup and supporting hot-swap replacement for maintenance without system shutdown. It integrates seamlessly with other Compact 200 Series modules, including controllers, discrete I/O modules, and communication cards, forming a unified, scalable process control solution.

Routine maintenance for the FBM220 includes visual inspection of the aluminum enclosure for physical damage, dust accumulation, or loose connections, and verification of front-panel LED indicators for normal power, communication, and channel operation. Periodic testing of input/output accuracy, loop resistance, and communication integrity is recommended, especially in high-vibration, corrosive, or strong electromagnetic interference environments. The conformal coating on the PCB protects against moisture and dust, reducing cleaning frequency.

Faulty modules can be repaired by authorized Schneider Electric service providers, with standard and expedited repair options available for critical applications. The FBM220 comes with a 12-month standard warranty against manufacturing defects, with extended warranty options available for long-term operational reliability. For redundant communication configurations, periodic testing of path failover functionality is recommended to ensure fault tolerance readiness.