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HIMA F8650 – HIMax Safety Central CPU Module
Product Overview
The HIMA F8650 is a fail-safe central CPU module for HIMax PES safety instrumented systems. Adopting dual clock-synchronized lockstep processors, it executes safety control logic, manages system I/O communication and fault diagnosis for ESD, BMS and F&G applications. It solves high-reliability safety control requirements in harsh process industries, realizing safe shutdown, real-time monitoring and stable data interaction between safety system and DCS/PLC platforms.
Technical Specifications — F8650
| Value | |
|---|---|
| Product Model | F8650 |
| Manufacturer | HIMA |
| Product Type | Safety Central CPU Module |
| Power | 5 V DC / 2 A; Auxiliary 24 V DC watchdog output |
| Communication / Protocol | Dual isolated RS-485, Modbus RTU; Profinet/Ethernet via expansion module |
| Operating Temperature | -40 °C to +85 °C |
| Mounting | HIMax system backplane rack mounting |
| Dimensions (HxWxD) | 117mm × 270mm × 123mm |
| Weight | 0.34 kg |
| Typical Interfaces | 2 isolated RS-485 ports, 4-digit diagnostic display, watchdog relay output |
| Compliance | IEC 61508 SIL 3, Cat.4, CE |
HIMA F8650
Key Features and Benefits — F8650
- Equipped with dual synchronized Intel 386EX 32-bit processors, lockstep architecture for intrinsic fail-safe performance.
- Integrated 1MB Flash-EPROM (OS/user program) + 256kB SRAM data memory for stable logic operation.
- Built-in fail-safe watchdog with short-circuit protection, automatic safe shutdown on system faults.
- Front 4-digit diagnostic display for real-time system status and error code indication.
- Supports redundant system configuration, high fault tolerance for continuous safety-critical operation.
Related Models
- F8650X: Upgraded version of F8650, enhanced memory and communication expansion capability.
- F8627X: HIMax Ethernet communication module, matches F8650 for DCS data transmission.
- F8630: HIMax system power supply module, dedicated power input for CPU rack.
- F8640: Safety I/O interface module, expands signal acquisition for F8650 control system.
Installation and Maintenance — F8650
- Insert module into standard HIMax backplane slots, ensure stable connector contact for power and communication.
- Configure and debug via dedicated safety programming software through RS-485 interface.
- Regularly check front diagnostic display status; replace CR2477N lithium battery every 6 years.
- Inspect serial ports and terminals periodically to avoid dust and loose connection faults.
- Support online diagnosis; faulty module can be replaced under safe system state without full system power-off.
