Description
1. Product Overview
Part Number: FM9925A-E, ABB factory exclusive part code HIEE451116R0001. Fixed hardware version with no universal alternative, fully interchangeable for on-site replacement without program modification and hardware adaptation.
Manufacturer: ABB
System Compatibility: Compatible with ABB Process Control, Symphony and Freelance industrial control platforms. Widely used in thermal power plants, combined-cycle power stations and industrial process automation systems for core data operation, multi-protocol conversion,serving as a key maintenance spare part for complete automation equipment.
Model Coding Definition
1. FM: ABB high-end integrated main control and communication board series prefix for high-speed operation and multi-protocol interaction;
2. 9925: Fixed hardware structure, processor configuration, channel resources and functional algorithm version;
3. A-E: Final mass-production hardware revision and factory solidified firmware version;
4. HIEE451116R0001: ABB primary factory traceability code for precise spare part matching and factory calibration filing.
Product Definition: Industrial high-speed integrated control and communication module. It integrates high-performance main control operation, multi-channel serial communication, protocol conversion, digital I/O scheduling, signal conditioning and self-diagnosis functions. It independently executes complex industrial control logic, cross-device data interaction and multi-protocol adaptation, realizing high-speed data transmission and linkage control between field equipment and upper systems, serving as the core hub of industrial process and power plant auxiliary control systems.
2. Six Core Hardware Functional Units
2.1 High-Speed Dual-Core Operation Unit
Equipped with industrial high-speed dual-core processor, large-capacity high-speed memory and solid-state storage. It supports parallel processing of multi-channel signal data, logic operation and data forwarding tasks with ultra-low delay, meeting high real-time and high-precision industrial control requirements, ensuring long-term stable operation without data accumulation and stalling.
2.2 Multi-Interface Serial Communication Unit
Built-in multiple RS-232 and RS-485 industrial serial ports support parallel network communication. It provides transparent transmission and semi-transparent encapsulated transmission modes, adapting to data interaction of on-site instruments, actuators and local controllers, solving the bandwidth limitation of traditional single-channel communication.
2.3 Multi-Protocol Intelligent Conversion Unit
Native solidified Modbus RTU and Profibus DP protocols support bidirectional cross-protocol intelligent conversion. It realizes data interconnection between heterogeneous industrial equipment and upper systems without external protocol converters, greatly simplifying industrial control network architecture.
2.4 Multi-Channel Digital I/O Scheduling Unit
Integrated massive digital input and output channels collect field equipment status and output control scheduling commands to realize local interlock and logic scheduling. Built-in hardware signal conditioning circuit filters and shapes signals to eliminate on-site electromagnetic noise and ensure accurate and stable signal transmission.
2.5 Full-Coverage Self-Diagnosis Unit
Complete hardware self-check during power-on and real-time monitoring of processor status, communication links, channel conditions, power supply and firmware operation during running. It automatically latches faults, outputs visual indicator alarms and retains fault data for accurate tracing, improving maintenance efficiency.
2.6 Industrial Reinforced Anti-Interference Unit
Wide-temperature industrial components and full conformal PCB coating with multi-stage galvanic isolation for power, communication and signal circuits. It resists frequency converter interference, high-voltage radiation and ground loop potential difference. Fanless passive cooling design provides excellent shockproof, dustproof and moistureproof performance for 24/7 stable operation in harsh industrial environments.

3. Technical Specifications
3.1 Basic Hardware Specifications
Item | Specification |
|---|---|
Full Part Number | FM9925A-E / HIEE451116R0001 |
Device Type | High-Speed Integrated Control & Communication Module |
Mounting | Standard DIN rail / cabinet embedded mounting |
Power Supply | 24VDC ±15% |
Power Consumption | ≤15W |
Protection Class | IP20 |
Processor | Industrial high-speed dual-core processor |
3.2 Core Communication & Control Parameters
- Communication Ports: Multiple RS-232 / RS-485 serial ports for parallel network operation
- Supported Protocols: Modbus RTU, Profibus DP, bidirectional protocol conversion
- Transmission Modes: Transparent transmission, semi-transparent encapsulated transmission
- I/O Configuration: Integrated multi-channel digital input & output
- Configuration Method: Hardware DIP switch + software remote configuration
- Data Processing: High-speed parallel operation, low-delay signal response & forwarding
- Isolation Grade: Three-level galvanic isolation for power, communication and signals
3.3 Environmental & Compliance Standards
- Operating Temperature: -25℃ ~ +70℃
- Storage Temperature: -40℃ ~ +85℃
- Humidity: 5%~95%RH non-condensing
4. Product Advantages
1. All-in-one integrated design combines operation, communication, signal scheduling and diagnosis, reducing cabinet equipment and wiring to lower failure rates.
2. Strong protocol compatibility realizes interconnection of heterogeneous devices without additional converters, facilitating system docking and renovation expansion.
3. High-speed dual-core architecture ensures low-delay and lossless parallel data processing, adapting to high-precision real-time industrial linkage control.
4. Wide-temperature and conformal coating reinforcement enables stable operation in high-temperature, high-humidity and strong EMI harsh industrial environments.
5. Dual configuration modes with visual status indication and accurate fault tracing greatly simplify commissioning and daily maintenance.
6. Factory pre-solidified parameters support direct drop-in replacement without system logic modification, reducing maintenance and upgrade costs.
5. Application Scenarios
1. Thermal & Combined-Cycle Power Plant Control System: Acts as core communication and operation hub for auxiliary systems, realizing high-speed data interaction and equipment linkage between field devices and DCS.
2. Process Industrial Automation System: Undertakes multi-device coordinated control, protocol conversion and signal scheduling tasks for chemical, metallurgical and building material production lines.
3. High-Voltage Electrical Control System: Integrates high-voltage equipment signal acquisition, logic regulation and data upload to coordinate high and low voltage system linkage.
4. Legacy Control System Upgrade: Replaces outdated single-function modules to improve system operation speed, communication stability and device compatibility without cabinet reconstruction.
5. Distributed Automation Networking: Serves as the core scheduling unit of distributed industrial networks to realize multi-terminal data convergence and unified instruction scheduling.
