Key Specifications

Safety Certification

Compliant with IEC 61508 up to SIL 3

Compliant with IEC 61511

Processor Architecture

32-bit RISC redundant processor architecture

Dual-core cross-checking design to ensure fault-safe operation

Memory & Data Protection

RAM: 512 KB

Flash ROM: 256 KB

Program and configuration data retained during power failure

Communication Interfaces

2 × Ethernet ports

2 × serial ports

Supports industrial protocols including PROFIBUS DP-V1

Power Supply

10–30 V DC wide-range industrial input

Environmental & Installation

Operating temperature: −25 °C to +70 °C

Cabinet rail installation

Supports hot swapping during operation

Mechanical Specifications

Dimensions (W × H × D): 172 × 110 × 41 mm

Weight: approx. 450 g

Core Functionality

Redundant and Fault-Tolerant Operation
Dual processors continuously cross-check each other. Single-point failures do not compromise the safe state of the system.

Safety Program Execution
Executes safety logic, interlock strategies, and system diagnostics in accordance with SIL 3 requirements.

System Communication & Integration

Connects to I/O sub-racks for field signal acquisition

Interfaces with upper-level DCS/PLC systems for data exchange and monitoring

Fault Safety & Diagnostics

Built-in self-diagnostics

Fault alarms and status reporting

Automatic safe shutdown mechanisms in the event of detected faults

Online Maintenance Capability
Hot-swappable design allows module replacement or maintenance without interrupting system operation.

HIMA F8620/11 Central Processing Unit

Typical Applications

Used in SIS and ESD systems across high-risk industries, including:

Petrochemical and chemical processing

Offshore oil and gas

Power generation

Metallurgy and heavy industry

Common safety functions include:

Unit and equipment protection

Process interlocking

Emergency shutdown (ESD)