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Detailed parameter table

Product introduction

The FOXBORO RH924WA is a high-density discrete input module, a key component of FOXBORO’s I/A Series distributed control system (DCS). Designed to collect digital signals from a large number of field devices such as limit switches, proximity sensors, and pushbuttons, it converts these signals into digital data for processing by the DCS controller (e.g., FCP270 P0917YZ).

With 32 channels, the RH924WA offers exceptional input density, making it ideal for applications requiring monitoring of numerous discrete points. Its 24 V DC input compatibility and fast response time ensure reliable detection of signal changes, while grouped isolation enhances noise immunity. As a native I/A Series module, it integrates seamlessly with other system components via the backplane bus, providing a robust solution for industrial automation.

Core advantages and technical highlights

High channel density: The RH924WA’s 32 channels (in a compact form factor) reduce the number of modules needed in large systems. An automotive assembly plant replaced four 8-channel modules with two RH924WA units, cutting cabinet space by 40% and simplifying wiring complexity, which reduced installation time by 25%.

Fast response: With 1 ms rising edge response, the module captures rapid signal changes—critical for high-speed machinery. In a bottling line, it detected bottle jams via proximity sensors within 1 ms, triggering immediate stops via connected FBM242 RH916TA output modules, reducing product damage by 30%.

Grouped isolation: 500 V AC isolation between groups protects against cross-talk in noisy environments. A steel mill installed the RH924WA near arc furnaces, where grouped isolation prevented electrical noise from causing false inputs, ensuring accurate monitoring of conveyor status signals.

Efficient power management: Operating on 24 V DC with 300 mA max consumption, the module minimizes power usage. A food processing plant with 10 RH924WA units reported 15% lower control cabinet power consumption compared to older 16-channel modules.

Typical application scenarios

Automotive manufacturing: In a car body welding shop, the RH924WA monitors 32 robotic weld gun position sensors (24 V DC). Each sensor signals when a weld is complete, and the module sends this data to the FCP270 P0917YZ controller. The fast response ensures the controller coordinates the next weld sequence within 5 ms, maintaining a production rate of 60 cars per hour.

Warehouse automation: A distribution center uses the RH924WA to track 32 pallet position sensors across 8 conveyor lines. The module detects when pallets reach transfer points, triggering FBM242 RH916TA outputs to redirect conveyors. Its high density allows all sensors to connect to two modules, simplifying integration with the warehouse management system and reducing latency in order fulfillment.

Water treatment plants: In a municipal water facility, the RH924WA monitors 32 valve position switches (open/closed status) across filtration and pumping stations. Grouped isolation ensures signals from pump rooms (high noise) don’t interfere with those from chemical dosing areas, enabling the DCS to verify valve positions before initiating chemical injections, ensuring regulatory compliance.

Related model recommendations

FBM201 RH914SQ: 16-channel discrete input module, complementary to RH924WA for smaller systems or as expansion in mixed setups (e.g., adding 16 channels to a 32-channel RH924WA network).

FCP270 P0917YZ: I/A Series controller that processes data from RH924WA, executing logic to trigger outputs via modules like FBM242 RH916TA.

FBM242 RH916TA: Discrete output module paired with RH924WA to form complete I/O loops (e.g., RH924WA detects sensor signals, FBM242 activates actuators).

FBM230 P0926GU: Analog output module, used alongside RH924WA in mixed-signal systems (e.g., RH924WA monitors tank level switches, FBM230 controls fill valves).

870IT HMI: Visualization platform displaying RH924WA input statuses, allowing operators to troubleshoot sensor issues in real time.

RH925WA: 64-channel high-density variant, upgrading from RH924WA for large-scale applications (e.g., semiconductor fabs with hundreds of sensor points).

Installation, commissioning and maintenance instructions

Installation preparation: Mount the RH924WA in an I/A Series rack, ensuring proper alignment with backplane connectors. Torque retaining screws to 0.6 Nm. Use 24 AWG shielded twisted-pair cables for field connections, grounding shields at the sensor end. Group wiring by channel groups (8 channels each) to leverage isolation features. Verify 24 V DC power (±10%) and polarity before power-up—reverse polarity protection prevents damage but disables inputs.

Maintenance suggestions: Inspect quarterly for dust and loose terminals; clean with compressed air (max 6 bar). Test input response annually using a signal generator, verifying 1 ms rising edge detection. Check isolation resistance (≥100 MΩ at 500 V DC) between groups every 2 years. The module is hot-swappable in I/A Series racks—replace faulty units with calibrated spares stored in anti-static bags (10°C to 30°C). Update DCS firmware yearly to ensure compatibility with latest diagnostic features.

Service and guarantee commitment

FOXBORO provides a 2-year warranty for the RH924WA, covering manufacturing defects and performance issues. During this period, Schneider Electric’s global support offers 24/7 technical assistance, including remote troubleshooting and module replacement.

Customers access wiring diagrams, configuration guides, and compatibility tools via the Schneider Electric Resource Center. Optional services include on-site commissioning (with input mapping verification) and training on noise mitigation. FOXBORO guarantees spare parts availability for 15 years post-production, ensuring long-term support for I/A Series installations. This commitment underscores confidence in the module’s reliability for high-density discrete monitoring.

Precise signal conversion: With 16-bit resolution and ±0.1% accuracy, the FBM230 P0926GU ensures that analog outputs closely match the digital control signals from the DCS. In a chemical batch reactor, this precision allowed for exact dosing of reagents via 4-20 mA control signals to metering pumps, reducing ingredient waste by 12% and improving product consistency.

Channel flexibility: Each channel can be independently configured for current or voltage outputs, adapting to diverse field devices. A water treatment plant used 4-20 mA outputs to control motorized valves and 0-10 V outputs to adjust variable frequency drives (VFDs) for pumps, all via a single FBM230 P0926GU module, simplifying wiring and reducing cabinet space by 30%.

Robust isolation: 500 V AC isolation between channels and the backplane prevents electrical noise from disrupting control signals. In a steel mill with high electromagnetic interference, the module maintained stable outputs to hydraulic valves controlling rolling mill pressure, eliminating pressure fluctuations that had previously caused product defects.

Seamless DCS integration: As a native I/A Series component, the FBM230 P0926GU communicates effortlessly with controllers like the FCP270 P0917YZ via the backplane bus. A refinery upgrading its distillation column controls reported that the module’s plug-and-play integration reduced commissioning time by 40% compared to third-party analog modules.

Detailed parameter table

Product introduction

The FOXBORO FCP270 P0917YZ is a high – performance controller processor module that lies at the heart of FOXBORO’s I/A Series distributed control system (DCS). This module is responsible for executing control algorithms, processing data from various I/O modules, and coordinating the overall operation of the DCS.

Equipped with a powerful 32 – bit RISC processor, the FCP270 P0917YZ can handle complex control tasks with ease. Its substantial memory capacity, including 128 MB of flash memory for program storage and 64 MB of SRAM for data storage, allows for the storage and execution of large – scale control programs. The module serves as the brain of the DCS, ensuring seamless communication between different components and enabling precise control of industrial processes.

Core advantages and technical highlights

High – speed processing: The 32 – bit RISC processor in the FCP270 P0917YZ enables fast execution of control algorithms. In a petrochemical plant, where real – time control of multiple reactors is crucial, the module was able to execute control loops with a minimum cycle time of 50 ms. This speed ensured that process variables such as temperature, pressure, and flow rates were tightly controlled, resulting in a 10% increase in product yield and a reduction in energy consumption by 15%.

Large control capacity: With the ability to support up to 10,000 control loops, the FCP270 P0917YZ is suitable for large – scale industrial applications. A power generation complex with hundreds of turbines, generators, and auxiliary systems utilized this module to manage all control functions. The module’s large control capacity eliminated the need for multiple smaller controllers, simplifying the control system architecture and reducing maintenance costs by 25%.

Flexible communication: The module offers a variety of communication interfaces, including Ethernet, serial ports, and the I/A Series backplane bus. A water treatment plant used the Ethernet interface to connect the FCP270 P0917YZ to a central control room for remote monitoring and control. The serial ports were used to interface with legacy flow meters and pH sensors, while the backplane bus connected to numerous I/O modules. This flexibility in communication allowed for seamless integration of different devices and systems, enhancing the overall functionality of the water treatment plant.

Redundancy for high availability: The hot – standby redundancy option of the FCP270 P0917YZ ensures continuous operation even in the event of a primary controller failure. In a pharmaceutical manufacturing facility, where uninterrupted production is critical, the redundant configuration of the module prevented any production stoppages during a controller hardware failure. The seamless switchover to the standby controller took less than 100 ms, minimizing the impact on product quality and production schedules.

Typical application scenarios

Petrochemical industry: In a refinery, the FCP270 P0917YZ is used to control the entire refining process, from crude oil distillation to product blending. It monitors and adjusts variables such as temperature, pressure, and flow in hundreds of process units. The module’s high – speed processing and large control capacity are essential for maintaining efficient operation and ensuring product quality meets strict industry standards. For example, it can precisely control the cracking process in the fluid catalytic cracking unit, optimizing the production of valuable gasoline and diesel fuels.

Power generation: In a combined – cycle power plant, the FCP270 P0917YZ manages the operation of gas turbines, steam turbines, and generators. It controls the combustion process in the gas turbine, adjusts the steam flow to the steam turbine, and synchronizes the generator with the power grid. The module’s ability to handle multiple control loops and its fast response time are crucial for maintaining grid stability and maximizing power generation efficiency. During peak load periods, it can quickly adjust the power output of the plant to meet the demand.

Water and wastewater treatment: A large – scale water treatment facility uses the FCP270 P0917YZ to control processes such as coagulation, sedimentation, filtration, and disinfection. It monitors water quality parameters such as turbidity, pH, and chlorine levels and adjusts the dosage of chemicals accordingly. The module’s flexible communication interfaces enable it to integrate with a wide range of sensors and actuators, ensuring the treated water meets regulatory standards. In wastewater treatment, it controls the activated sludge process to effectively remove pollutants from the wastewater.

Related model recommendations

FCP280 P0917YA: A more advanced controller processor module with higher processing power and larger memory capacity. It is suitable for extremely complex industrial applications where the FCP270 P0917YZ may reach its limits, such as in large – scale chemical plants with thousands of control loops and complex reaction processes.

FBM201 RH914SQ: The digital input module, often used in conjunction with the FCP270 P0917YZ. The digital input signals from the FBM201 RH914SQ, such as the status of switches and sensors, are processed by the FCP270 P0917YZ to make control decisions. For example, in a manufacturing plant, the status of conveyor belt sensors (connected to FBM201 RH914SQ) is used by the FCP270 P0917YZ to control the speed and operation of the conveyor belts.

FBM233 P0926GX: The analog input module, which can be interfaced with the FCP270 P0917YZ. In applications where analog signals from sensors like temperature, pressure, and flow transmitters need to be processed, the FBM233 P0926GX converts these analog signals to digital and sends them to the FCP270 P0917YZ for further analysis and control. In a power plant, the FBM233 P0926GX is used to measure turbine – related analog signals, and the FCP270 P0917YZ uses this data to control the turbine’s operation.

870IT: The FOXBORO HMI terminal, which provides an interface for operators to interact with the FCP270 P0917YZ. Operators can view real – time process data, set control parameters, and receive alarms through the HMI. In a control room, the 870IT allows operators to monitor and manage the entire industrial process controlled by the FCP270 P0917YZ, enhancing the usability and effectiveness of the control system.

Installation, commissioning and maintenance instructions

Installation preparation: Mount the FCP270 P0917YZ in an I/A Series rack, ensuring proper alignment with the backplane connectors. Torque the retaining screws to the recommended value (usually 0.7 – 0.8 Nm). Connect the power supply cables, ensuring the correct polarity and that the 24 V DC power supply (±10%) is stable. Connect the communication cables, such as Ethernet and serial cables, following the proper wiring standards. Avoid installing the module in areas with high electromagnetic interference, such as near large motors or high – voltage transformers.

Commissioning: Power up the module and use the FOXBORO I/A Series configuration software to load the control program, set the communication parameters, and configure the input/output connections. Test the communication links to ensure seamless data transfer between the FCP270 P0917YZ and other modules. Verify the functionality of the control algorithms by simulating input signals and checking the output responses. Calibrate any associated sensors and actuators to ensure accurate control.

Maintenance suggestions: Inspect the module quarterly for loose connections, signs of overheating, or physical damage. Clean the module and its enclosure using compressed air (max 5 – 6 bar) to remove dust and debris. Annually, perform a comprehensive diagnostic test of the module using the I/A Series diagnostic tools to check the health of the processor, memory, and communication interfaces. In case of a failure, the hot – standby redundancy allows for quick replacement of the faulty module without disrupting the overall control system. Keep spare modules in a static – free environment and store them at a temperature between 10°C – 30°C. Update the firmware of the module regularly to benefit from the latest features and bug fixes provided by FOXBORO.

Service and guarantee commitment

FOXBORO provides a 3 – year warranty for the FCP270 P0917YZ, covering manufacturing defects and performance issues. During this period, Schneider Electric’s global support network offers 24/7 technical assistance, including remote troubleshooting, software updates, and hardware replacement if necessary.

Customers have access to comprehensive documentation, including installation manuals, configuration guides, and troubleshooting handbooks, through the Schneider Electric Resource Center. Optional services such as on – site commissioning, operator training, and system integration support are also available. FOXBORO guarantees spare parts availability for 15 years post – production, ensuring long – term support for I/A Series DCS installations. This commitment provides customers with peace of mind regarding the module’s lifespan and maintainability, allowing them to rely on the FCP270 P0917YZ for critical industrial control applications.

Channel versatility: Each of the 16 channels on the FBM201 RH914SQ can be independently configured to accept different input signal types, including 24 V DC, 48 V DC, 120 V AC, and 230 V AC. A manufacturing facility with a mix of sensors and switches from different suppliers was able to use this single module to interface with all of them. This eliminated the need for multiple types of input modules, reducing inventory costs by 30% and simplifying the control system architecture.

Fast response time: With a maximum response time of 5 ms for both rising and falling edges, the module is capable of quickly detecting changes in input signals. In a high – speed packaging line, the FBM201 RH914SQ was used to monitor the position sensors of the packaging machinery. Its fast response time ensured that any misalignment or jamming of the products was detected immediately, triggering corrective actions within milliseconds and minimizing production downtime.

Reliable isolation: The 500 V AC isolation between channels and the backplane protects the module and the connected control system from electrical interference and voltage transients. A chemical plant installed the FBM201 RH914SQ in an area with high electromagnetic noise. The isolation feature effectively shielded the digital input signals from the noise, preventing false triggering of alarms and ensuring the stable operation of the control system.

High-voltage precision: The FBM233 P0926GX excels in measuring low-level signals (down to ±50 mV) with ±0.05% accuracy—critical for vibration sensors on gas turbines. A combined-cycle power plant used this module to monitor turbine bearing vibrations, detecting anomalies as small as 0.02 mm/s, enabling predictive maintenance and reducing unplanned shutdowns by 40%.

Enhanced isolation: With 1000 V AC channel-to-channel isolation, the module eliminates cross-talk between sensitive signals. A nuclear power plant installed the FBM233 P0926GX to monitor 4 separate coolant loop pressures (via ±100 mV transmitters), where isolation prevented ground loops from distorting measurements—unlike legacy modules that required external isolators.

Superior noise rejection: 120 dB CMRR at 50/60 Hz ensures stable readings in electrically noisy environments. A steel mill deployed the FBM233 P0926GX near arc furnaces, where it maintained accurate temperature readings (via thermocouples) despite electromagnetic interference that plagued standard analog modules.

Channel flexibility: Each channel can be independently configured for 8 signal ranges, from ±50 mV (strain gauges) to ±10 V (pressure transmitters). A petrochemical refinery used this to monitor 4 variables: reactor pressure (±10 V), flow (4-20 mA via resistor network), pH (±500 mV), and level (±1 V) with a single module, reducing cabinet space by 50%.

Channel versatility: With 16 discrete output channels, each of the RH916TA FBM242 can be configured to support different output signal voltages (15 – 60 V DC, 120 V AC / 125 V DC, 240 V AC). A manufacturing plant utilized this feature to control a mix of pneumatic valves (24 V DC), solenoid valves (120 V AC), and motor starters (240 V AC) using a single module, simplifying the control cabinet layout and reducing component costs by 20%.

High – current handling: Capable of handling up to 2.25 A per channel, the module can drive high – power loads. In an oil refinery, the RH916TA FBM242 was used to directly control large – capacity motor – driven pumps (1.5 A per channel). Its high – inrush current tolerance (8 A for 20 ms at 30°C) ensured reliable motor starting, minimizing the risk of tripping due to starting surges.

Enhanced isolation: Galvanic isolation between each input and output, along with group isolation when used with external excitation, safeguards the module and connected devices from electrical interference and voltage transients. A pulp and paper mill installed the RH916TA FBM242 in an area with high electromagnetic noise. The module’s isolation features maintained stable output signals to control valves, preventing misoperation and improving process reliability.

Compact and rugged design: Designed to withstand Class G3 (harsh) environments, the RH916TA FBM242 has a compact form factor. A mining operation deployed the module in an underground control station, where its small size allowed for easy installation in a space – constrained control cabinet. The module’s rugged construction protected it from dust, vibrations, and temperature variations, ensuring continuous operation.

High relay durability: Each relay on the P0973LQ is rated for 100,000 operations at full load, far exceeding industry averages. A water treatment plant using this module to control valve actuators reported zero relay failures over 3 years of continuous operation (≈8,000 cycles annually), reducing maintenance costs by 40% compared to legacy modules.

Channel independence: With 16 individually configurable channels, the P0973LQ allows mixed control of different devices (e.g., 8 valves and 8 pumps) from a single module. A chemical plant optimized its reactor feed system by assigning 4 channels to reagent valves, 4 to purge pumps, and 8 to alarm sirens—eliminating the need for 3 separate modules and saving 60% of cabinet space.

Fast response time: The module’s relays actuate in ≤10 ms, critical for time-sensitive processes. In a power plant’s boiler safety system, the P0973LQ rapidly triggers fuel shutoff valves during pressure spikes, reducing response time by 50% compared to older modules and enhancing operational safety.

Seamless DCS integration: As a native I/A Series module, the P0973LQ communicates directly with FOXBORO controllers via the backplane bus, supporting auto-configuration. A refinery upgraded its distillation unit controls with this module, achieving full DCS integration in 3 hours—half the time required for third-party digital output modules.

Channel flexibility: Each of the 8 channels on the FBM232 P0926GW can be independently configured for different signal types (e.g., 4-20 mA for pressure transmitters and 1-5 V for level sensors). A chemical plant utilized this feature to monitor 5 different process variables (pH, temperature, pressure, flow, and level) using a single module, reducing cabinet space by 30% compared to using multiple single-type modules.

Industrial-grade accuracy: With ±0.1% full-scale accuracy, the module delivers consistent measurements even in fluctuating temperatures. A petroleum refinery using the FBM232 P0926GW to monitor reactor temperatures (via 4-20 mA RTD transmitters) reported measurement drift of less than 0.05% over 6 months, ensuring precise control of catalytic reactions and reducing product variability.

Enhanced noise immunity: The module’s channel-to-channel isolation (250 V AC) minimizes cross-talk between signals, critical in environments with high electromagnetic interference. A pulp mill installed the FBM232 P0926GW near large motors, where it maintained stable readings from flow sensors despite electrical noise—unlike legacy modules that required expensive signal conditioners.

Seamless DCS integration: As a native I/A Series component, the FBM232 P0926GW communicates directly with FOXBORO controllers via the backplane bus, eliminating configuration delays. A power plant upgraded its boiler control system with this module, achieving full integration with the existing DCS in 4 hours—half the time required for third-party modules.

High – speed data transfer: The 3500/93 is capable of rapid data transfer rates, ensuring that real – time data from the 3500 series modules (like vibration data from the 3500/42, temperature data from the 3500/60, and speed data from the 3500/50) is promptly transmitted to external systems. In a large – scale power generation plant, where thousands of data points need to be processed and analyzed in real – time to maintain grid stability, the high – speed data transfer of the 3500/93 is essential. It allows for quick response times in case of any abnormal machinery behavior, such as sudden changes in turbine speed or excessive vibration levels.

Multiple communication protocols: This module supports a wide range of communication protocols, including Modbus TCP/IP, Ethernet/IP, and PROFIBUS – DP. This versatility makes it compatible with various external control and monitoring systems, regardless of the manufacturer or the specific requirements of the industrial application. For example, in an oil and gas refinery that uses a DCS from one vendor and a SCADA system from another, the 3500/93 can communicate with both systems simultaneously, using the appropriate protocol for each connection. This enables seamless integration of the BENTLY 3500 series machinery protection system into existing plant – wide automation infrastructure.

Data conversion and formatting: The 3500/93 is responsible for converting the raw data from the 3500 series modules into a format that can be easily understood and processed by external systems. It also performs data formatting tasks, such as scaling and unit conversion. In a manufacturing facility with rotating equipment, the vibration data measured in micrometers by the 3500/42 module may need to be converted to a more commonly used unit like mils for display on a SCADA system. The 3500/93 takes care of such conversions, ensuring that the data presented to operators in the control room is in a familiar and useful format.

Redundancy support: To enhance system reliability, the 3500/93 can be configured in a redundant setup. In critical industrial applications, such as those in the aerospace or nuclear industries, where any interruption in machinery monitoring can have severe consequences, redundant 3500/93 modules can be installed. In the event of a failure in one module, the redundant module immediately takes over the communication tasks, ensuring continuous data transfer and system operation. This redundancy feature significantly reduces the risk of system downtime due to communication failures.

High – speed data transfer: The 3500/93 is capable of rapid data transfer rates, ensuring that real – time data from the 3500 series modules (like vibration data from the 3500/42, temperature data from the 3500/60, and speed data from the 3500/50) is promptly transmitted to external systems. In a large – scale power generation plant, where thousands of data points need to be processed and analyzed in real – time to maintain grid stability, the high – speed data transfer of the 3500/93 is essential. It allows for quick response times in case of any abnormal machinery behavior, such as sudden changes in turbine speed or excessive vibration levels.

Multiple communication protocols: This module supports a wide range of communication protocols, including Modbus TCP/IP, Ethernet/IP, and PROFIBUS – DP. This versatility makes it compatible with various external control and monitoring systems, regardless of the manufacturer or the specific requirements of the industrial application. For example, in an oil and gas refinery that uses a DCS from one vendor and a SCADA system from another, the 3500/93 can communicate with both systems simultaneously, using the appropriate protocol for each connection. This enables seamless integration of the BENTLY 3500 series machinery protection system into existing plant – wide automation infrastructure.

Data conversion and formatting: The 3500/93 is responsible for converting the raw data from the 3500 series modules into a format that can be easily understood and processed by external systems. It also performs data formatting tasks, such as scaling and unit conversion. In a manufacturing facility with rotating equipment, the vibration data measured in micrometers by the 3500/42 module may need to be converted to a more commonly used unit like mils for display on a SCADA system. The 3500/93 takes care of such conversions, ensuring that the data presented to operators in the control room is in a familiar and useful format.

Redundancy support: To enhance system reliability, the 3500/93 can be configured in a redundant setup. In critical industrial applications, such as those in the aerospace or nuclear industries, where any interruption in machinery monitoring can have severe consequences, redundant 3500/93 modules can be installed. In the event of a failure in one module, the redundant module immediately takes over the communication tasks, ensuring continuous data transfer and system operation. This redundancy feature significantly reduces the risk of system downtime due to communication failures.