System Name Foxboro MICRO-I/A Type Compact Distributed Control System (DCS) Key Characteristics Integrated controller & HMI, ruggedized design, true DCS functionality for small to medium applications. Hardware Components Controller Modules (CM) e.g., CM400 Series (like the CM400TH). These were the core processors, often featuring integrated displays and keypads. I/O Expansion Supported connection to remote I/O racks using Foxboro's FBM (Field Bus Module) series, the same I/O modules used in the larger I/A Series. This ensured compatibility and scalability. Power Supplies Dedicated power supply modules for the controller and I/O racks. Software & Configuration Engineering Software Configured using Foxboro's I/A Series software tools (like the Foxboro Control Core) on a Windows-based PC, ensuring commonality with the larger I/A Series. Control Languages Supported standard DCS and PLC languages: Continuous Function Chart (CFC), Ladder Logic (LD), Sequential Function Chart (SFC), Structured Text (ST). Communication & Networking Peer-to-Peer Communication Micro-I/A stations could communicate with each other over a network. Integration with I/A Series Could be seamlessly integrated as a node into a larger Foxboro I/A Series DCS network via Nodebus or other supported protocols. Open Protocols Supported industry-standard protocols like Modbus TCP/IP and Modbus RTU for connecting to third-party devices (PLCs, drives, etc.) and systems. Physical & Environmental Enclosure Modules were designed for panel mounting with a high degree of integration. Environmental Rating Typically NEMA 4X / IP66 for the controller, allowing installation in harsh industrial environments (dust, water sprays, corrosion). Operating Temperature 0°C to +60°C (32°F to 140°F) standard.

Model Number P0972AJ Product Line Foxboro I/A Series Component Type Fan Assembly / Cooling Module Key Function Provides forced-air cooling for modules within a PSS rack to prevent overheating. Electrical Specifications Input Voltage Powered by the rack's internal DC power bus, typically +24 VDC or +48 VDC. Power Consumption Low power draw, specific to the fan motor (e.g., 10-30W). Physical & Performance Airflow Designed to deliver a specific Cubic Feet per Minute (CFM) to meet the thermal dissipation requirements of the rack. Fan Speed May be fixed speed or have temperature-controlled variable speed. Mounting Slides into a dedicated slot within the PSS chassis, aligned with the cooling vents of the modules. Hot-Swappable Yes. Designed to be inserted and removed without requiring a system shutdown. Redundancy Often used in a redundant (N+1) configuration. If one fan fails, the remaining fans provide sufficient cooling. Status Monitoring Includes a feedback signal (e.g., a tachometer output or alarm contact) to monitor fan operation and detect failures. Connector Uses a specific electrical connector to interface with the rack's backplane for power and status signaling. Environmental Acoustic Noise Specified to operate below a certain dB(A) level. Operating Temperature Rated for the same ambient temperature as the rack, typically 0°C to +60°C.

Model Number 871A-1F Product Line Foxboro 800 Series Instrument Type Differential Pressure (DP) Transmitter Output Signal 2-Wire, 4-20 mA DC, HART® protocol enabled (for digital communication). Power Supply Typically 12-45 VDC (loop powered). Performance Accuracy High accuracy, typically ±0.25% of span (including linearity, hysteresis, and repeatability). Turndown Ratio High turndown (e.g., 10:1), allowing for wide rangeability. Response Time User-adjustable damping. Pressure Ratings Line Pressure Specific maximum static pressure rating (e.g., 3600 psi / 248 bar) depending on the "1F" flange rating. Overpressure Protection Capable of withstanding high overpressures without damage. Materials of Construction Wetted Parts The "1F" code specifies materials. Common options include 316 Stainless Steel for isolating diaphragms and Hastelloy C-276 for corrosive services. Electrical Connection Likely ½” NPT conduit connection. Process Connections Typically ¼” NPT or ½” NPT female ports on the high and low pressure sides. Environmental Operating Temperature -40°F to +185°F (-40°C to +85°C) for the electronics. Wider range for the sensor. Ambient Temperature Effect Minimal span and zero shift per degree temperature change. Humidity 0-100% RH (non-condensing). Enclosure Rating NEMA 4X (weatherproof and corrosion-resistant).

Model Number P0400DA Product Line Foxboro I/A Series Module Type Control Processor (CP) Key Function Executes control logic, manages I/O modules, and handles system communications. Performance Processing Capability Suitable for moderate-complexity continuous and batch control applications. Capable of handling a defined number of PID loops and logic points. Memory Specific capacity for user logic and configuration. Control Scan Rate Configurable scan periods (e.g., 100 ms, 200 ms, 1 s). Input/Output (I/O) Management Supported FBMs Manages a complement of various Field Bus Modules (digital, analog, etc.). I/O Capacity Supports a maximum number of I/O points (e.g., up to 1024 points), dependent on FBM types and configuration. Communication Interfaces Nodebus Communicates with other control processors and application workstations (AWs) over the high-speed Nodebus for peer-to-peer communication. Fieldbus Communicates with Field Bus Modules (FBMs) over the Fieldbus network. Redundancy Redundancy Support Typically supports 1:1 Redundancy. Can be paired with an identical CP for bumpless failover, ensuring high availability. Physical & Environmental Mounting Installs into a slot in a Foxboro PSS (Power Supply System) rack. Operating Temperature 0°C to +60°C (standard industrial range). Status Indicators (LEDs) Comprehensive LEDs for Power, Run, Fault, Primary/Standby status, and communication activity.

Model Number P0916NG0D Product Line Foxboro I/A Series Module Type Redundant, Hot-Swappable AC/DC Power Supply Module (New Generation) Key Function Provides high-wattage, fault-tolerant power for high-density and high-availability I/A Series nodes. Input Specifications Input Voltage Wide-range AC input, e.g., 90-264 VAC, automatically sensed. Input Frequency 47 - 63 Hz (Compatible with 50Hz/60Hz). Power Factor Correction (PFC) Active PFC (standard for high-power, modern supplies to meet efficiency regulations). Output Specifications Output Voltages Provides the standard, isolated DC voltages for the I/A Series backplane: • +5.1 VDC (Primary logic power) • +24.8 VDC (Field I/O power) • ±15.2 VDC (Analog circuit power) Total Output Power High Capacity, estimated 1600 Watts (based on the "16" suffix). Redundancy Designed for N+1 Redundancy with current-sharing (load-sharing) operation. Protections Comprehensive: Over-Current (OCP), Over-Voltage (OVP), Over-Temperature (OTP), and Short-Circuit protection. Physical & Operational Mounting Slides into a dedicated bay in a redundant power chassis (e.g., a PSS31 rack). Hot-Swappable Yes. Designed for insertion and removal under full load. Cooling Internal, forced-air cooling with fans. Fan speed may be temperature-controlled. Status Indicators (LEDs) Comprehensive LED indicators for: • Input AC OK • Output DC OK • Unit Failure • Load Sharing Status • Replace Indicator Communication & Monitoring Likely includes advanced communication (e.g., via a serial link or dedicated pin) for detailed status reporting, alarm logging, and performance metrics (e.g., output current, temperature) to the control system. Environmental Operating Temperature 0°C to +60°C (with derating at high temperatures). Efficiency High efficiency, typically > 90% for the "NG" generation, reducing energy loss and heat generation.

Model Number P0972QM-0C Product Line Foxboro I/A Series Component Type Redundant, Hot-Swappable Fan Assembly / Cooling Module Key Function Provides forced-air cooling for high-density power supply modules in a PSS rack. Electrical Specifications Input Voltage Powered by the power supply rack's internal DC bus, typically +24 VDC or +48 VDC. Fan Speed May operate at a fixed speed or have speed control based on temperature. Physical & Performance Airflow Designed to deliver a specific Cubic Feet per Minute (CFM) or cubic meters per hour (m³/h) to meet the cooling requirements of the associated power supplies. Mounting Slides into a dedicated slot within the power supply chassis, aligned with the cooling vents of the PSUs. Hot-Swappable Yes. Designed to be replaced without powering down the entire power system, ensuring continuous cooling. Redundancy Often used in a redundant (N+1) configuration. If one fan fails, the remaining fans can provide sufficient cooling. Status Monitoring Includes a sensor (e.g., a tachometer signal or Hall-effect sensor) to monitor fan speed and detect failures. Connector Uses a specific electrical connector to interface with the rack's backplane for power and status signaling. Environmental Acoustic Noise Specified to operate below a certain dB(A) level for acceptable noise in the control room environment.

Model Number IDP10-AF1C01F Product Line Foxboro I/A Series Module Type Single-Channel, Isolated Frequency / Pulse Input Conditioner Key Function Conditions and measures frequency or pulse train signals from field devices. Input Specifications Supported Input Signal Pulse or Frequency Input (e.g., from a turbine flow meter, vortex flow meter, or tachometer). Input Type Typically accepts Namur proximity sensor compatible signals or OC (Open Collector) transistor pulse signals. Frequency Range A specific range defined by the "F1C" code (e.g., 0 Hz to 10,000 Hz). The exact range must be verified from the data sheet. Input Voltage Levels Designed for low-voltage pulse signals (e.g., 0-30 VDC). Minimum Pulse Width The module can recognize a minimum pulse duration (e.g., 50 μs). Isolation Channel-to-System (Field-to-Logic): 1500 VAC RMS continuous. Provides protection against ground loops and transients. Output Specifications Output to System A digital value (e.g., totalized pulse count or computed frequency) communicated digitally over the FBI bus to the host controller. Scalability The pulse count or frequency can be scaled within the DCS software to represent engineering units (e.g., liters/min, gallons, RPM). Power Supply Operating Voltage Powered by the +5V and ±15V supplies from the PSS baseplate. Sensor Power May provide a loop power voltage (e.g., 8.2 VDC) for 2-wire Namur sensors. Physical & Environmental Operating Temperature -40°C to +70°C (-40°F to +158°F) Mounting Installs into a dedicated Foxboro PSS series baseplate. Status Indicators (LEDs) Typically includes LEDs for Power (PWR) and Input Status (e.g., pulses detected).

Model Number E69F-B12 Type Pneumatic Scotch-Yoke Rotary Piston Actuator Action Double-Acting (The "B" in the model code typically signifies this). Air pressure is required to move the piston in both directions (to open and to close). Rotation Angle 90° (standard quarter-turn). Mounting Standardized mounting per ISO 5211 to fit compatible quarter-turn valves. Performance Supply Air Pressure Standard Range: 40 - 120 psi (2.8 - 8.3 bar). Torque Output High Torque. Exact values (in lb-in, lb-ft, or Nm) are dependent on air supply pressure and the specific size "F". Consult the official Actuator Torque Table for precise figures. Spring Return Option The base "B" model is double-acting. A Spring Return Module (SRM) can often be added to provide fail-safe operation (fail-open, fail-closed). Physical & Environmental Manual Override Equipped with a manual handwheel for local operation during maintenance or air supply failure. Position Indicator Visual mechanical indicator showing "OPEN" and "CLOSED" positions. Operating Temperature Standard: -20°C to +82°C (-4°F to +180°F), with compatible lubricants. Accessory Ports Prepared for the mounting of accessories like limit switches, solenoid valves, and positioners.

Model Number P0916KF-0B Product Line Foxboro I/A Series Module Type Redundant, Hot-Swappable AC/DC Power Supply Module Key Function Provides high-wattage, fault-tolerant power for high-density I/A Series nodes. Input Specifications Input Voltage Likely a universal AC input range, such as 90-264 VAC, or a specific high-current input like 200-240 VAC. The "K" code defines this. Input Frequency 47 - 63 Hz (Automatically compatible with 50Hz/60Hz). Power Factor Correction (PFC) Active PFC (Power Factor Correction) is almost certain for a module of this capacity to meet regulatory standards. Output Specifications Output Voltages Provides the standard, isolated DC voltages for the I/A Series backplane: • +5.1 VDC (Primary logic power) • +24.8 VDC (Field I/O power) • ±15.2 VDC (Analog circuit power) Total Output Power High Capacity, estimated 1600 Watts (based on the "16" suffix). The exact wattage per voltage rail must be verified. Redundancy Designed for N+1 Redundancy. Modules operate in a current-sharing, load-sharing mode. Protections Comprehensive suite including: Over-Current (OCP), Over-Voltage (OVP), Over-Temperature (OTP), and Short-Circuit protection. Physical & Operational Mounting Slides into a dedicated bay in a redundant power chassis (e.g., a PSS31 rack). Hot-Swappable Yes. Designed for insertion and removal under full load without disrupting system operation. Cooling Internal, forced-air cooling with one or more fans. Fan status is typically monitored. Status Indicators (LEDs) Comprehensive LED indicators for: • AC Power Present • DC Output OK • Unit Failure • Load Sharing Active • Replace Indicator Communication May include a communication link for reporting status, alarms, and metrics to the system for monitoring. Environmental Operating Temperature 0°C to +60°C (with possible derating at the upper end of the temperature range). Efficiency High efficiency, typically > 85% or 90%, to minimize heat generation and energy loss.

Model Number P0926EJ-0C Product Line Foxboro I/A Series Module Type DC/DC Power Distribution & Interface Module Key Function Converts a centralized -48 VDC input into the regulated DC voltages needed for an I/A Series rack. Input Specifications Input Voltage -48 VDC (Nominal). This is a common voltage for centralized battery-backed power systems. The operating range is likely around -40 to -60 VDC. Output Specifications Output Voltages Provides the standard DC voltages required by the I/A Series backplane: • +5 VDC (for digital logic) • +15.2 VDC and -15.2 VDC (for analog circuits) • +24.8 VDC (for field I/O power) Total Output Power The "26" code suggests a specific power rating, which would be detailed in the data sheet (e.g., 260W or similar). Protections Standard protections including input reverse polarity protection, over-current (OCP), and over-voltage (OVP) on outputs. Physical & Operational Mounting Installs into a dedicated slot in a Foxboro PSS rack (e.g., PSS21, PSS31). Hot-Swappable This depends on the rack system design. In many PSS31 configurations, these modules can be hot-swappable. Verification from the manual is critical. Status Indicators (LEDs) LEDs to indicate the presence of input voltage (-48 VDC) and output power status (DC OK). Environmental Operating Temperature 0°C to +60°C (standard industrial range).

Model Number P0916JR0C Product Line Foxboro I/A Series Module Type Redundant, Hot-Swappable AC/DC Power Supply Module Key Feature Provides N+1 redundant, fault-tolerant power for high-availability I/A Series nodes. Input Specifications Input Voltage Likely a wide range, such as 90-264 VAC automatically sensed, or a specific voltage like 120/240 VAC. The "J" code defines this. Input Frequency 47 - 63 Hz (Standard for 50/60 Hz systems). Power Factor Correction (PFC) Active PFC is highly probable for a module of this capacity. Output Specifications Output Voltages Provides multiple isolated DC outputs for the system backplane: • +5.1 VDC • +15.2 VDC • -15.2 VDC • +24.8 VDC (for field instrument power) Total Output Power High Capacity (Estimated 1600W or higher, based on the "16" in the code). This is suitable for large racks. Redundancy True N+1 Redundancy supported. Modules operate in a current-sharing, load-sharing mode. Protections Comprehensive: Over-voltage (OVP), Over-current (OCP), Over-temperature (OTP), and Short-circuit protection. Physical & Operational Mounting Slides into a dedicated bay in a redundant power chassis (e.g., PSS31). Hot-Swappable Yes. Can be inserted or removed under full load. Cooling Internal fan(s) for forced-air cooling. Status Indicators (LEDs) Comprehensive LEDs for AC OK, DC OK, Load Share, Unit Fail, and Replace Indicator. Communication May include a serial communication link for reporting status and alarms to the system. Environmental Operating Temperature 0°C to +60°C (with derating above a certain ambient temperature). Efficiency High efficiency, typically > 85% to reduce heat generation.

Model Number P0903ZN Product Line Foxboro I/A Series Module Type Power Supply Module (PSU) Key Function Provides regulated DC power to all other modules (CPs, FBMs, IDPs, etc.) in an I/A Series rack. Input Specifications Input Voltage 85 - 264 VAC (Universal input, compatible with standard 120VAC and 240VAC networks). The "N" in the model code typically denotes AC input. Input Frequency 47 - 63 Hz (Compatible with both 50Hz and 60Hz power grids). Inrush Current Limit Yes, to prevent tripping circuit breakers during power-up. Output Specifications Output Voltages Provides the standard DC voltages required by the I/A Series backplane: • +5 VDC (for digital logic circuits) • ±15 VDC and/or +24 VDC (for analog circuits and field I/O power) Total Output Power Approximately 300 Watts (The "03" in the model code often indicates this power level). The exact rating must be verified. Efficiency Typically > 80%. Protections Overload (current limit), over-voltage, and over-temperature protection. Physical & Environmental Mounting Installs into a dedicated slot in a Foxboro PSS (Power Supply System) rack. Hot-Swappable Yes. In a redundant configuration, it can be replaced without powering down the entire system. Operating Temperature 0°C to +60°C (standard industrial range). Status Indicators (LEDs) Includes LED indicators for Power Good (PWR OK), Fault (FAIL), and Load Sharing status. Safety & Compliance Safety Standards Complies with UL, cUL, CE, and other international safety standards. EMC Immunity Designed to meet electromagnetic compatibility requirements for industrial environments.