HIMA F8652E (SIL3 safety CPU, HIQuad H41q/H51q system)

F8652E is a SIL3-level safety CPU module from German HIMA Black Horse. It belongs to the HIQuad H41q/H51q series and is used in safety instrument systems (SIS), responsible for core safety controls such as safety interlocks and emergency shutdown (ESD). 

I. Basic Information

Model: F8652E (Part Number: 984865264)

Brand: HIMA (Germany)

Series: HIQuad H41q/H51q (SIS Safety System)

Type: Dual CPU Locked-Step Redundant Safety Controller

Safety Level: IEC 61508 SIL3 (TÜV Certified), ISO 13849 PL e

Installation: 19" Rack, 4SU Width (Thin Type)

Status: In Service, F865x Series Economy CPU

II. Hardware Core Specifications

Processor: 2 × 32-bit RISC, 25MHz, dual CPU lock-step redundancy

Memory (per CPU):

System Flash: 512KB

User Program Flash: 1MB

Data SRAM: 512KB (specific for security logic)

Dimensions: 163mm × 38mm × 58mm (length × width × height)

Weight: Approximately 0.4kg (light and compact)

III. Electrical Parameters

Power Supply: 24VDC (18~30VDC), redundant power input

Power Consumption: Typical 3W, maximum ≤ 5W

Safety Watchdog: 24V output, 500mA, short-circuit protection

IV. Communication Interfaces (Reduced Version)

Serial Port: 2 × RS232/RS485 (optional, supports Modbus RTU)

Ethernet: Single port 10/100Mbps (Modbus TCP/IP, HIMax protocol)

Backplane Bus: Special I/O bus, connects H41q/H51q series I/O modules

Expansion: Can be equipped with F8627X and other communication modules, supports fiber optic / redundant networking

V. Environmental and Reliability

Operating Temperature: -20℃ ~ +60℃ (industrial wide temperature range)

Storage Temperature: -40℃ ~ +85℃

Humidity: 5%~95%, no condensation

Protection Grade: IP20 (dust-proof, used in cabinet)

Redundancy: Dual CPU lock-step operation, automatic fault switching, no single point failure

Maintenance: Supports hot swapping, redundant system can be replaced online without interruption

VI. Core Functions (Position: Economical and Practical Type)

SIL3 Safety Control: Meets IEC 61508 SIL3, suitable for ESD, F&G, safety interlock.

Dual CPU Redundancy: Lock-step operation, real-time comparison, fault-safe shutdown, high reliability.

Medium I/O Capacity: Supports up to 1024 points of I/O, suitable for small and medium-sized SIS projects.

Fast Response: Cycle time 20ms, meets the real-time requirements of conventional safety logic.

Multi-Protocol Communication: Ethernet + Serial Port, supports Modbus TCP/RTU, HIMax, easy to integrate with DCS/PLC.