H92904CC0500 Foxboro Redundant CPU Module, I/A Series ACP Controller Central Processing Unit with Hot‑Standby Automatic Failover
H92904CC0500 Foxboro Redundant CPU Module, I/A Series ACP Controller Central Processing Unit with Hot‑Standby Automatic Failover - Image 2
H92904CC0500 Foxboro Redundant CPU Module, I/A Series ACP Controller Central Processing Unit with Hot‑Standby Automatic Failover - Image 3
H92904CC0500 Foxboro Redundant CPU Module, I/A Series ACP Controller Central Processing Unit with Hot‑Standby Automatic Failover - Image 4

H92904CC0500 Foxboro Redundant CPU Module, I/A Series ACP Controller Central Processing Unit with Hot‑Standby Automatic Failover

  1. H92904CC0500 – I/A Series ACP redundant CPU module (Target Model)
  2. H90QHQE013N0 – Foxboro I/A H90 operator workstation server
  3. ACP50 – Foxboro I/A controller chassis
  4. FBM201 – I/A series analog input field module
  5. FBM233 – I/A series communication interface module
  6. FBM247 – Configurable multi‑channel AI/AO I/O module
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Description

H92904CC0500 Foxboro Redundant CPU Module, I/A Series ACP Controller Central Processing Unit with Hot‑Standby Automatic Failover

 

Product Application

H92904CC0500 is the main CPU processor for Foxboro I/A Series ACP40 and ACP50 controller chassis, belonging to Schneider Electric Foxboro DCS platform. It executes continuous process control logic, PID regulation, sequence control and interlock protection program. It supports dual CPU hot‑standby redundancy. The standby CPU synchronizes program and real‑time data with primary controller, and automatically takes over control within less than 100ms once main CPU fails. Widely used in petrochemical refining, chemical plant, thermal power and oil & gas process units. It communicates with field FBM I/O modules through high‑speed IABus backplane bus, and exchanges real‑time data with operator workstations / H90 workstation servers via 10/100M Ethernet.

H92904CC0500

Product Specifications

  • Part Number: H92904CC0500
  • Manufacturer: Foxboro (Schneider Electric)
  • Product Type: DCS Controller CPU Module (for ACP40 / ACP50 chassis)
  • Processor: 32‑bit RISC CPU with integrated FPU floating‑point arithmetic unit
  • Memory: 8 MB Program memory + 8 MB Data memory, expandable by optional memory card
  • Backplane Bus: Dual redundant IABus high‑speed peer‑to‑peer bus
  • Network Interface: 1 × 10/100 Mbps Ethernet port for DCS control network
  • Redundancy Mode: Hot standby, automatic bumpless failover ＜100ms
  • Programming Standard: IEC 61131‑3, configured via Foxboro Control Software / IA‑Tools
  • Power Supply: Powered by ACP chassis backplane 24 VDC
  • Operating Temperature: 0 ℃ ~ +55 ℃; Storage: -40 ℃ ~ +85 ℃
  • EMC Compliance: IEC 61000‑6‑2 / IEC 61000‑6‑4 industrial standard
  • Certification: CE, UL, CSA, FM, RoHS
  • Product Status: Spare replacement CPU for existing I/A Series ACP controller projects
  • Gross Weight: Approx. 0.8 kg

 

Core Technical Parameters

  • Control capacity: Supports up to 12 FBM field I/O modules expansion in the same controller chassis
  • Synchronization: Real‑time data synchronization between primary and standby redundant CPU
  • Self‑diagnosis: Built‑in hardware fault detection for CPU, memory, bus and communication circuit
  • Isolation: Industrial electrical isolation between internal logic and backplane bus
  • Hot swap: Module hot‑swap capable, replace CPU without shutting down the whole ACP chassis
  • Cycle time: Fast control loop execution for continuous process regulation

 

Recommended Matching Spare Parts & Accessories (8 Items)

  1. ACP50 / ACP40 controller chassis backplane
  2. Redundant 24VDC power supply module for ACP chassis
  3. FBM series analog / digital I/O field modules (FBM201, FBM233 etc.)
  4. I/A Series control network Ethernet switch
  5. Foxboro IA‑Tools engineering configuration software license
  6. Shielded Ethernet cable for controller to workstation communication
  7. IABus termination connector
  8. DCS UPS power supply for ACP controller cabinet

H92904CC0500

Product Features

✅ Redundant Hot‑Standby Architecture Primary / standby CPU synchronous operation. Automatic bumpless switchover less than 100ms when main CPU fails, no process control interruption.

✅ 32‑bit RISC with FPU High‑speed floating‑point calculation, suitable for complex PID, advanced process control and interlock logic.

✅ Dual Redundant IABus Backplane Dual high‑speed backplane bus communicating with FBM I/O modules, eliminates single bus failure risk.

✅ IEC 61131‑3 Standard Programming Supports multiple programming languages for flexible process logic development.

✅ Module Hot‑Swap Maintenance Can pull out and replace faulty CPU module online without powering down the ACP controller chassis.

✅ Complete Hardware Self‑Diagnosis Continuously monitor CPU core, memory, bus and network status; report fault alarm to HMI workstation.

✅ Foxboro I/A Native Compatibility Fully compatible with I/A DCS system, seamlessly communicates with FBM I/O and H90 series operator workstations.

 

Installation Guidelines

  1. Insert H92904CC0500 CPU module into designated CPU slot of ACP40 / ACP50 chassis, lock the front fastening handle.
  2. For redundant configuration, install the second identical CPU into the paired standby CPU slot.
  3. Connect control network Ethernet cable to CPU RJ45 port, link to DCS control LAN switch.
  4. Download IEC 61131‑3 control program and project configuration to primary CPU via IA‑Tools.
  5. Activate redundancy synchronization function, confirm primary & standby CPU data synchronization status normal.
  6. Assign controller node address in I/A system network.
  7. Perform redundancy test: power off primary CPU, verify standby CPU automatically takes over control without disturbance.
  8. Check CPU running, communication and fault indicator lights after commissioning.

 

Maintenance Instructions

Daily Maintenance Check CPU running status indicator light on ACP chassis. Verify primary‑standby synchronization status on DCS HMI. Monitor controller communication alarm.

Periodic Maintenance (Every 6–12 months) Clean dust of chassis ventilation filter. Check CPU module fastening handle tightness. Backup controller control logic program. Inspect Ethernet cable connection.

Fault Maintenance

  • CPU fault light alarm: Replace the faulty hot‑swap CPU module, confirm redundancy synchronization recovers.
  • Loss of communication with FBM I/O: Check IABus backplane connection and FBM module status.
  • Redundancy synchronization failure: Download consistent project configuration to both primary and standby CPU.
  • Do not extract CPU module while critical process is running unless redundant standby CPU is healthy.

Long‑Term Operation Tips Keep controller cabinet temperature within 0~55℃. Always maintain spare identical CPU module for emergency replacement. Backup control program version archive.

 

Brand Same‑Series Models (6 Models)

  1. H92904CC0500 – I/A Series ACP redundant CPU module (Target Model)
  2. H90QHQE013N0 – Foxboro I/A H90 operator workstation server
  3. ACP50 – Foxboro I/A controller chassis
  4. FBM201 – I/A series analog input field module
  5. FBM233 – I/A series communication interface module
  6. FBM247 – Configurable multi‑channel AI/AO I/O module

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