HIMA F8641 Safety Processor Module

Technical Specifications

Model:F8641

Brand:HIMA

Safety certification:SIL3,IEC61508,EN954-1 Cat.4,AK6

Power supply:24V DC

Architecture:1oo2D dual cross-monitoring redundant safety processor

Memory:RAM / EPROM for safety logic program and SOE event log

Communication:Front panel dual RS232 serial ports for engineering

Diagnosis:Hardware watchdog,periodic comprehensive self-check

Mounting:Plug-in subrack installation

Protection class:IP20

Operating temperature:-20~+60℃

Relative humidity:5~95% non-condensing

Weight:0.40kg

Certification:CE

System compatibility

Designed for HIMA H41q / H51q PES safety system,runs safety application program,executes safety interlock logic and SOE sequence of event recording,widely used in petrochemical,chemical plant ESD emergency shutdown and F&G fire gas protection system.

Function

SIL3 1oo2D redundant safety processor module.Two independent processor channels cross-check calculation results to eliminate single point failure.It executes safety logic,collects I/O status and outputs safety shutdown commands.Hardware watchdog and automatic periodic self-test are built-in.When hardware fault or safety trip triggered,the module automatically enters predefined safe state.

Installation

Plug into H41q / H51q rack backplane,match with I/O and communication modules,download safety project via SILworX engineering software.

Interface

‑Backplane safety bus connector

‑Front panel dual RS232 serial ports

‑LED indicators for run,fault and communication status

Circuit feature

1oo2D fail-safe architecture,dual channel cross-monitoring,continuous hardware self-test,strong anti-electromagnetic interference,meets SIL3 functional safety requirements for hazardous industrial environment.

Feature

H41q/H51q series SIL3 safety processor F8641. Common faults:firmware mismatch,backplane contact failure,serial port damage.Confirm rack firmware version before replacement.

Diagnostic

Processor calculation mismatch,communication error or internal hardware fault triggers fault alarm;controller executes safety interlock logic.

Built‑in function

F8641 performs safety logic calculation and SOE sequence of event recording for SIS safety instrumented system emergency shutdown protection,widely used for process plant safety spare replacement.

Product Brief

F8641 belongs to HIMA H41q / H51q family,plug-in SIL3 1oo2D redundant safety CPU module for HIMA safety subrack. Verify rack firmware compatibility before ordering.Test safety logic and self-diagnosis function during commissioning. ESD anti‑static protection shall be followed during installation.