The HIMA HIQuad / HIMax series safety CPU modules are core components of Safety Instrumented Systems (SIS). They are responsible for executing safety logic, fault diagnosis, and redundant control, ensuring deterministic and fail-safe system behavior.
The modules comply with IEC 61508 SIL 3 / Category 4 safety requirements and are designed for high-availability safety applications in critical industries.

Key Specifications

Order Number

984865065

Processor Architecture

Dual Intel 386EX, 32-bit

Clock frequency: 25 MHz

Lockstep synchronized operation for fault detection

Memory (per processor)

Flash EPROM: 1 MB (system and application program)

SRAM: 1 MB (runtime data)

Communication Interfaces

2 × isolated RS-485

Supports safety communication protocols (e.g. PROFIsafe)

Power Supply

5 VDC / 2 A

Environmental Conditions

Operating temperature: 0 °C to +50 °C

Mechanical Characteristics

Dimensions: 144 × 160 × 40 mm

Height: approximately 8 SU

Installation: Rack-mounted

Local Display & Diagnostics

Four-digit matrix display

Status LEDs for local diagnostics and system indication

Watchdog

Safety-related watchdog output

Output voltage: 24 VDC

Output current: 500 mA

Integrated short-circuit protection

Core Features

Dual-CPU lockstep redundancy

Continuous comparison of processing results

Automatic fault detection and transition to a safe state

Comprehensive self-diagnostics

Power supply and voltage monitoring

Temperature supervision

Communication integrity checking

Program flow and execution monitoring

High system availability

Supports redundant configurations

Enables non-disruptive (online) upgrades to minimize downtime

Flexible system integration

Fully compatible with HIMA HIMax and HIQuad system expansion

Designed for scalable SIS architectures

 

HIMA F8652X Processor Module

 

Typical Applications

Emergency Shutdown Systems (ESD)

Fire & Gas Systems (F&G)

Safety interlock and protection systems

Industries served include:

Petrochemical and chemical processing

Gas turbine and oil & gas facilities

Power generation and transmission

Metallurgy and heavy industry