HIMA F8650 Safety Processor Module

Technical Specifications

Model:F8650

Brand:HIMA

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

Power supply:5V DC 2A

Processor:Dual Intel 386EX,25MHz clock-synchronized

Memory:1MB Flash-EPROM for OS,512KB Flash-EPROM for user program,256KB battery-backed SRAM

Communication:2×galvanic isolated RS485,9600~57600bps

Display:4-digit matrix diagnostic display

Diagnosis:Hardware watchdog,comprehensive periodic self-test,processor cross-comparison

Mounting:Plug-in subrack installation,8TE width

Protection class:IP20

Operating temperature:-20~+60℃

Relative humidity:5~95% non-condensing

Weight:0.40kg

Certification:CE

System compatibility

Designed for HIMA H51q 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 synchronized 32-bit processors cross-check calculation results to eliminate single point failure.It executes safety logic,collects field I/O data and outputs safety shutdown commands.Hardware watchdog monitors processor operation.When mismatch or hardware fault detected,the module triggers fault alarm and enters predefined safe state.

Installation

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

Interface

‑2×RS485 serial communication terminals

‑4-digit front panel diagnostic display

‑Backplane safety bus connector

‑LED indicators for run,fault and communication status

Circuit feature

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

Feature

H51q series SIL3 safety processor F8650. Common faults:firmware mismatch,backplane contact failure,memory chip aging.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

F8650 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

F8650 belongs to HIMA H51q family,plug-in SIL3 1oo2D redundant safety CPU module for H51q safety subrack. Verify rack compatibility before ordering.Test safety logic and self-diagnosis function during commissioning. ESD anti‑static protection shall be followed during installation.