F-8652X | HIMA | SIL 3 Safety-Related Central Processing Unit

Shopify Product Title

HIMA F8652X H41q Central Module Safety CPU SIL 3

Brief Product Description

The HIMA F8652X is a high-integrity central module designed for the H41q-MS, -HS, and -HRS programmable electronic systems (PES). Engineered for safety-critical applications, this CPU module is SIL 3 certified according to IEC 61508. It features dual 32-bit Intel processors and integrated safety watchdogs to provide deterministic, fault-tolerant control in Emergency Shutdown (ESD) and Fire and Gas (F&G) systems.

Product Description

SIL 3 Certified Safety Processing

The F8652X (Part Number F 8652X) serves as the primary intelligence for HIMA H41q safety systems. The module utilizes a multi-processor architecture featuring dual Intel 386EX 32-bit chips running at 25 MHz. This redundant design ensures that all safety-related logic is executed with 100% diagnostic coverage. The operating system, user program, and data storage are partitioned into distinct 1 MB Flash-EPROM and SRAM segments per processor to maintain data integrity and prevent cross-corruption.

As a central component of a Safety Instrumented System (SIS), the F8652X is built to trigger a safe state immediately upon detecting an internal or external fault. The onboard safety-related watchdog provides a 24 V output (up to 500 mA) capable of de-energizing critical loops during a system failure. This ensures that the plant reaches a predetermined safe state, fulfilling the requirements of IEC 61508 and IEC 61511.

Detailed Technical Specifications

The following table outlines the hardware and operational limits of the F8652X central module.