HIMA F8650X CPU Module – Product Description

Overview

The HIMA F8650X (Order Code 984865065 / 984865066) is a high-integrity CPU module engineered for demanding safety instrumented systems. It supports deterministic logic execution, stable redundancy management, and long-term operational reliability in industrial environments. Moreover, its architecture helps users maintain consistent safety performance across large-scale ESD, F&G, and critical process automation platforms. The module belongs to the HIMax and HIQuad system families, and it integrates smoothly into existing H51q MS, HS, and HRS configurations.

Technical Specifications

Processor & Performance

• Dual Intel 386EX, 32-bit processors

• 25 MHz clock per processor

• Deterministic execution for safety logic

Memory

• 1 MB Flash-EPROM per processor

• 1 MB SRAM per processor

• Battery-backed memory retention

Operating System & Logic

• Runs HIMA safety-certified operating system

• Executes SIL3 logic with predictable timing

Communication Interfaces

• Two isolated RS-485 ports

• Optional Ethernet / PROFINET modules

• Supports integration with field devices and controllers

Diagnostics & Monitoring

• Four-digit matrix diagnostic display

• Safety watchdog output, 24 V, loadable to 500 mA

• Automatic shutdown under fault conditions

Power Requirements

• 5 VDC / 2 A via backplane

Physical Data

• European standard PCB design

• Dimensions: 128 × 165 × 130 mm

• Weight: 0.4 kg

Environmental Ratings

• Operating: –20 °C to +60 °C

• Storage: –40 °C to +85 °C

• Humidity: 5–95% non-condensing

• Protection class: IP20

Safety Certification

• SIL 3 (IEC 61508)

• Suitable for certified SIS applications

Additional Information

• Backup battery included

• Existing operating system details required at order time

• Shipping weight: 3 kg

FAQ

Q1: Does the F8650X require a specific operating system version?
Yes, existing system OS information must be provided to ensure firmware compatibility.

Q2: Can the CPU run independently without redundancy?
Yes, it can operate alone, although redundant configurations improve system availability.

Q3: Is the module suitable for older HIQuad racks?
Yes, it integrates with H51q MS, HS, and HRS systems when installed according to HIMA guidelines.

Q4: How does the battery-backed memory help operations?
It preserves essential runtime data and user program information during power loss.

Q5: Does the module support Ethernet-based systems?
Yes, optional Ethernet or PROFINET interfaces allow extended networking when required.