HIMA F7553 Safety Coupling Module

Technical Specifications

Model:F7553

Brand:HIMA

Safety certification:SIL3,IEC61508,TÜV certified

Power supply:24V DC;5V DC for subframe

Feature:I/O bus address coding,subrack 5V power monitoring,watchdog switch

Mounting:Plug-in subrack installation,4TE width

Protection class:IP20

Operating temperature:-20~+60℃

Relative humidity:5~95% non-condensing

Weight:0.36kg

Certification:CE

System compatibility

Designed for HIMA H51q safety system,realizes communication between main rack and I/O subframe,widely used in petrochemical,chemical plant ESD emergency shutdown and F&G fire gas protection system.

Function

SIL3 safety subframe coupling module.It serves as the bus interface between main safety rack and remote I/O subframe.It monitors 5V power of I/O subframe,provides address coding for I/O cabinet and subframe.With watchdog switch for convenient maintenance without system trip.Mechanical coding prevents wrong module insertion.When bus or power fault detected,the module triggers fault alarm.

Installation

Plug into H51q main rack backplane,set DIP coding switch,connect I/O subframe bus cable,configure via SILworX engineering software.

Interface

‑Backplane safety bus connector

‑DIP coding switch,WD watchdog cover switch

‑LED indicators for run,fault and communication status

Circuit feature

Dual monitoring circuit,continuous hardware self-test,strong anti-electromagnetic interference,meets SIL3 functional safety requirements for hazardous industrial environment.

Feature

H51q series SIL3 coupling module F7553. Common faults:backplane contact failure,bus circuit damage,power monitoring circuit fault.Confirm rack firmware and subframe topology before replacement.

Diagnostic

Subframe power abnormality or bus communication failure triggers fault alarm;controller executes safety interlock logic.

Built‑in function

F7553 realizes reliable bus connection and power monitoring between main rack and I/O subframe for SIS safety instrumented system emergency shutdown protection,widely used for process plant safety spare replacement.

Product Brief

F7553 belongs to HIMA H51q family,plug-in SIL3 I/O subframe coupling module for H51q safety subrack. Verify rack compatibility before ordering.Test bus communication and power monitoring function during commissioning. ESD anti‑static protection shall be followed during installation.