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Central Processing Unit CPU Module F 8621A HIMA SIL 3

Central Processing Unit CPU Module F 8621A HIMA SIL 3

Technical Overview

The F 8621A is a high-integrity Central Processing Unit (CPU) designed for HIMA HIMAX and HIQUAD safety-related automation platforms. Acting as the controller’s core processor, it executes certified safety logic and manages deterministic communication...

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Availability: Low stock: 99 left

SKU: F8621A
Vendor: HIMA
Category: Central Processing Unit CPU Module
Related Series:

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Technical Overview

The F 8621A is a high-integrity Central Processing Unit (CPU) designed for HIMA HIMAX and HIQUAD safety-related automation platforms. Acting as the controller’s core processor, it executes certified safety logic and manages deterministic communication with I/O and interface modules.

Engineered for safety-critical applications such as Emergency Shutdown (ESD), Fire & Gas (F&G), and Burner Management Systems (BMS), the F 8621A supports system architectures capable of achieving SIL 3 compliance in accordance with IEC 61508 when deployed in approved redundant configurations.

Key Specifications

Parameter Specification
Model F 8621A
Function Safety Central Processing Unit
Applicable Systems HIMAX, HIQUAD
Processor Type Safety-optimized high-speed CPU
Program Memory Flash EPROM
Data Memory SRAM
Communication Backplane bus interface
Diagnostics Built-in self-tests & hardware watchdog
Operating Temperature 0°C to +60°C
Dimensions 2.0 × 18.7 × 12.8 cm
Weight 0.16 kg

 

Application Areas

  • Emergency Shutdown (ESD) systems

  • Fire & Gas detection systems

  • Burner Management Systems (BMS)

  • Turbine protection systems

  • Critical process interlocking in oil & gas, petrochemical, and power generation facilities

Diagnostics & Maintenance

  • Automatic power-on self-test

  • Continuous runtime monitoring

  • Fault reporting to engineering workstation

  • Event logging for safety validation and troubleshooting

In redundant systems, the module supports online replacement (hot swap) with automatic synchronization to the active CPU partner.

Frequently Asked Questions

What is the difference between F 8621 and F 8621A?
The F 8621A is a later hardware revision featuring improved EMC performance and updated internal components for extended lifecycle support and compliance with newer safety requirements.

How is the safety application programmed?
Programming is performed using HIMA-certified engineering tools such as ELOP II or SILworX, supporting FBD and SFC programming environments compliant with IEC 61131 standards.

Is the module hot-swappable?
Yes. In redundant architectures, the F 8621A can be replaced while powered, with automatic logic and data synchronization upon insertion.