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Foxboro P0400QH Product Overview The Foxboro P0400QH is a high-performance fault-tolerant control processor in the P0400 series, engineered for Foxboro I/A Series DCS and EcoStruxure Foxboro systems.

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Foxboro P0400QH Product Overview The Foxboro P0400QH is a high-performance fault-tolerant control processor in the P0400 series, engineered for Foxboro I/A Series DCS and EcoStruxure Foxboro systems.
May 26, 2026

Foxboro P0400QH Product Overview The Foxboro P0400QH is a high-performance fault-tolerant control processor in the P0400 series, engineered for Foxboro I/A Series DCS and EcoStruxure Foxboro systems.

The Foxboro P0400QH is a high-performance fault-tolerant control processor in the P0400 series, engineered for Foxboro I/A Series DCS and EcoStruxure Foxboro systems. As an upgraded FBM host controller, it delivers enhanced computing power, expanded communication bandwidth, and superior anti-interference capability for high-load, mission-critical process control. Built to ISA S71.04 G3 harsh-environment standards, it features a rugged metal enclosure, multi-stage EMI/RFI suppression, and complete galvanic isolation. It supports bumpless redundant switchover and hot-swap, ensuring uninterrupted system operation. As the core processing and communication hub for large-scale distributed automation, it guarantees long-term stability in demanding industrial settings.

Description

Foxboro P0400QH

Product Overview

The Foxboro P0400QH is a high-performance fault-tolerant control processor in the P0400 series, engineered for Foxboro I/A Series DCS and EcoStruxure Foxboro systems. As an upgraded FBM host controller, it delivers enhanced computing power, expanded communication bandwidth, and superior anti-interference capability for high-load, mission-critical process control. Built to ISA S71.04 G3 harsh-environment standards, it features a rugged metal enclosure, multi-stage EMI/RFI suppression, and complete galvanic isolation. It supports bumpless redundant switchover and hot-swap, ensuring uninterrupted system operation. As the core processing and communication hub for large-scale distributed automation, it guarantees long-term stability in demanding industrial settings.

Basic Information

  • Manufacturer: Foxboro (Invensys, now Schneider Electric)

  • Model: P0400QH

  • Product Type: Fault-tolerant Control Processor Module, P0400 Series FBM Host Controller

  • Compatible Systems: Foxboro I/A Series DCS, EcoStruxure Foxboro; fully compatible with 100/200-series FBM modules and standard I/A backplanes

  • Mounting: Slot-mounted on dedicated backplanes; hot-swap enabled

  • Protection Class: IP20 (cabinet installation)

  • Certifications: CE, UL, CSA, ATEX, SIL 2; compliant with ISA S71.04 G3

  • Power Supply: 24 VDC ±10% redundant input; max 30 W consumption

  • Operating Temperature: 0°C to +65°C

  • Storage Temperature: -40°C to +85°C

  • Relative Humidity: 5%–95%, non-condensing

  • Vibration/Shock: ISA S71.04 G3 (1 g, 10–500 Hz; 15 g, 11 ms)

  • Weight: ~0.9 kg

  • Dimensions: 165 mm × 95 mm × 120 mm (H×W×D)

  • Origin: United States

  • Warranty: 5-year standard

Function and Positioning

The P0400QH serves as the central control and network gateway for I/A Series DCS. It executes regulatory, logic, sequential, and batch control, while collecting and processing data from connected FBM modules. It enables bidirectional data exchange between upper monitoring systems, field devices, and third-party equipment via multiple communication interfaces. Supporting 1:1 or N+1 redundancy, it provides ultra-fast automatic failover to eliminate single points of failure. Hot-swap allows online maintenance without process shutdown. Integrated diagnostics with LED indicators and remote monitoring via DCS enable proactive fault management. Positioned as a high-reliability core controller for medium-to-large process industries, it simplifies system architecture, reduces maintenance costs, and ensures stable long-term operation.

Core Performance Parameters

  • Processor: 32-bit industrial RISC; 0.1 μs/boolean, 0.5 μs/floating-point instruction speed

  • Memory: 16 MB program, 8 MB data

  • Communication: 10/100 Mbps Ethernet (fiber/copper), ControlNet, RS-232; supports Modbus TCP/IP, Ethernet/IP, ControlNet

  • FBM Capacity: Up to 128 × 200-series FBMs (or mixed 100/200-series)

  • I/O Points: Max 256; supports remote I/O expansion

  • Isolation: 1500 VDC (ports/power/bus); 2500 VDC channel-to-channel

  • Redundancy: 1:1/N+1; automatic failover <30 ms

  • Hot-Swap: Online insertion/removal, no data loss

  • Diagnostics: LED status (power/run/fault/comms); segment fault localization; remote fault logging

  • Protection: Overvoltage, overcurrent, short-circuit, over-temperature, ESD, surge; IEC 61000-6-2 EMC compliant

  • Data Integrity: 32-bit CRC; bit-to-bit data matching

General Adaptable Accessories

  • Mounting: I/A 200-series baseplates, rack rails, retention clips, cabinet brackets, backplane extension cables, DIN-rail adapters

  • Cabling: Shielded Ethernet (fiber/copper), ControlNet, RS-232, Modbus TCP/IP cables; cable glands, terminal blocks, surge protectors, shielding kits

  • Power: 24 VDC redundant supplies, backplane power distribution modules, conditioners, backup batteries, voltage regulators

  • Spare Parts: Enclosure gaskets, LED panels, fuses, communication transceivers, isolation circuits, power regulation modules

  • Diagnostic Tools: I/A diagnostic software, Foxboro configuration tools, Ethernet/ControlNet analyzers, Modbus pollers, loop simulators, FBM testers

  • Environmental: Cabinet fans, dust filters, vibration mounts, temperature/humidity monitors, conformal coating kits

  • Cable Management: Shielded ties, organizers, trays, strain reliefs

Applicable Equipment and Fields

The P0400QH is designed for Foxboro I/A Series and EcoStruxure Foxboro DCS in process industries requiring high reliability and redundancy. Key sectors include oil and gas (refineries, offshore platforms, gas processing), petrochemicals (reactors, distillation units), thermal power generation (boiler/turbine control), pulp and paper (digesters, recovery boilers), municipal water and wastewater treatment, pharmaceuticals (batch manufacturing), metallurgy (smelters, rolling mills), and food and beverage processing. It interfaces with pressure transmitters, flow meters, level/temperature sensors, valve positioners, motor controllers, and remote I/O modules. Its rugged design, high FBM capacity, and multi-protocol communication make it ideal for harsh, mission-critical environments.


Product Overview

The Foxboro P0400QH is a high-performance fault-tolerant control processor in the P0400 series, engineered for Foxboro I/A Series DCS and EcoStruxure Foxboro systems. As an upgraded FBM host controller, it delivers enhanced computing power, expanded communication bandwidth, and superior anti-interference capability for high-load, mission-critical process control. Built to ISA S71.04 G3 harsh-environment standards, it features a rugged metal enclosure, multi-stage EMI/RFI suppression, and complete galvanic isolation. It supports bumpless redundant switchover and hot-swap, ensuring uninterrupted system operation. As the core processing and communication hub for large-scale distributed automation, it guarantees long-term stability in demanding industrial settings.

Basic Information

  • Manufacturer: Foxboro (Invensys, now Schneider Electric)

  • Model: P0400QH

  • Product Type: Fault-tolerant Control Processor Module, P0400 Series FBM Host Controller

  • Compatible Systems: Foxboro I/A Series DCS, EcoStruxure Foxboro; fully compatible with 100/200-series FBM modules and standard I/A backplanes

  • Mounting: Slot-mounted on dedicated backplanes; hot-swap enabled

  • Protection Class: IP20 (cabinet installation)

  • Certifications: CE, UL, CSA, ATEX, SIL 2; compliant with ISA S71.04 G3

  • Power Supply: 24 VDC ±10% redundant input; max 30 W consumption

  • Operating Temperature: 0°C to +65°C

  • Storage Temperature: -40°C to +85°C

  • Relative Humidity: 5%–95%, non-condensing

  • Vibration/Shock: ISA S71.04 G3 (1 g, 10–500 Hz; 15 g, 11 ms)

  • Weight: ~0.9 kg

  • Dimensions: 165 mm × 95 mm × 120 mm (H×W×D)

  • Origin: United States

  • Warranty: 5-year standard

Function and Positioning

The P0400QH serves as the central control and network gateway for I/A Series DCS. It executes regulatory, logic, sequential, and batch control, while collecting and processing data from connected FBM modules. It enables bidirectional data exchange between upper monitoring systems, field devices, and third-party equipment via multiple communication interfaces. Supporting 1:1 or N+1 redundancy, it provides ultra-fast automatic failover to eliminate single points of failure. Hot-swap allows online maintenance without process shutdown. Integrated diagnostics with LED indicators and remote monitoring via DCS enable proactive fault management. Positioned as a high-reliability core controller for medium-to-large process industries, it simplifies system architecture, reduces maintenance costs, and ensures stable long-term operation.

Core Performance Parameters

  • Processor: 32-bit industrial RISC; 0.1 μs/boolean, 0.5 μs/floating-point instruction speed

  • Memory: 16 MB program, 8 MB data

  • Communication: 10/100 Mbps Ethernet (fiber/copper), ControlNet, RS-232; supports Modbus TCP/IP, Ethernet/IP, ControlNet

  • FBM Capacity: Up to 128 × 200-series FBMs (or mixed 100/200-series)

  • I/O Points: Max 256; supports remote I/O expansion

  • Isolation: 1500 VDC (ports/power/bus); 2500 VDC channel-to-channel

  • Redundancy: 1:1/N+1; automatic failover <30 ms

  • Hot-Swap: Online insertion/removal, no data loss

  • Diagnostics: LED status (power/run/fault/comms); segment fault localization; remote fault logging

  • Protection: Overvoltage, overcurrent, short-circuit, over-temperature, ESD, surge; IEC 61000-6-2 EMC compliant

  • Data Integrity: 32-bit CRC; bit-to-bit data matching

General Adaptable Accessories

  • Mounting: I/A 200-series baseplates, rack rails, retention clips, cabinet brackets, backplane extension cables, DIN-rail adapters

  • Cabling: Shielded Ethernet (fiber/copper), ControlNet, RS-232, Modbus TCP/IP cables; cable glands, terminal blocks, surge protectors, shielding kits

  • Power: 24 VDC redundant supplies, backplane power distribution modules, conditioners, backup batteries, voltage regulators

  • Spare Parts: Enclosure gaskets, LED panels, fuses, communication transceivers, isolation circuits, power regulation modules

  • Diagnostic Tools: I/A diagnostic software, Foxboro configuration tools, Ethernet/ControlNet analyzers, Modbus pollers, loop simulators, FBM testers

  • Environmental: Cabinet fans, dust filters, vibration mounts, temperature/humidity monitors, conformal coating kits

  • Cable Management: Shielded ties, organizers, trays, strain reliefs

Applicable Equipment and Fields

The P0400QH is designed for Foxboro I/A Series and EcoStruxure Foxboro DCS in process industries requiring high reliability and redundancy. Key sectors include oil and gas (refineries, offshore platforms, gas processing), petrochemicals (reactors, distillation units), thermal power generation (boiler/turbine control), pulp and paper (digesters, recovery boilers), municipal water and wastewater treatment, pharmaceuticals (batch manufacturing), metallurgy (smelters, rolling mills), and food and beverage processing. It interfaces with pressure transmitters, flow meters, level/temperature sensors, valve positioners, motor controllers, and remote I/O modules. Its rugged design, high FBM capacity, and multi-protocol communication make it ideal for harsh, mission-critical environments.


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