HIMA F3237 8 Fold NAMUR Digital Input Module

Technical Specifications

Model:F3237

Brand:HIMA

Safety certification:SIL3,IEC61508,TÜV certified,AK6

Channel:8-fold NAMUR safety input

Input signal:NAMUR sensor signal conforming to DIN19234

Sensor supply:8.2V DC

Signal current:0 signal:0.35~1.2mA;1 signal:2.1~6.0mA

Diagnosis:Wire break ≤0.28mA,Short circuit ≥6.5mA detection

Switching time:Typ.10ms

Mounting:Plug-in subrack installation,4TE width

Protection class:IP20

Power supply:5V DC /24V DC

Operating temperature:-20~+60℃

Relative humidity:5~95% non-condensing

Weight:0.20kg

Certification:CE

System compatibility

Designed for HIMA HIQuad H41q / H51q safety system,collects signals from NAMUR proximity sensors,widely used in petrochemical,chemical plant ESD emergency shutdown and F&G fire gas protection system.

Function

SIL3 8-fold NAMUR safety digital input module.It supplies 8.2V power for field NAMUR sensors,detects sensor switching state and transmits safety signal data to HIQuad CPU,supports continuous wiring fault diagnosis for wire break and short circuit.

Installation

Plug into HIQuad H41q/H51q rack backplane,wire NAMUR proximity sensors to module terminals,complete hardware configuration via ELOPII engineering software.

Interface

‑8 channels NAMUR input terminals

‑Built-in 8.2V sensor power supply

‑Backplane bus connector for power and data exchange

‑LED indicators for channel status and fault

Circuit feature

1oo2 safety architecture,periodic hardware self-test,built-in NAMUR loop fault detection,strong anti-electromagnetic interference,meets SIL3 functional safety requirements for hazardous industrial environment.

Feature

HIQuad series 8-fold SIL3 NAMUR safety input module F3237. Common faults:sensor supply failure,signal detection abnormal,connector pin damage.Confirm H41q/H51q rack firmware version before replacement.

Diagnostic

Module or wiring fault triggers channel fault alarm;controller marks corresponding NAMUR input signal invalid and executes safety interlock logic.

Built‑in function

F3237 acquires NAMUR proximity sensor signals for safety interlock and emergency shutdown protection,widely used for chemical and power plant safety spare replacement.

Product Brief

F3237 belongs to HIMA HIQuad I/O family,plug-in 8-fold SIL3 NAMUR digital input module for H41q/H51q safety subrack. Verify rack compatibility before ordering. Test NAMUR signal acquisition and line diagnosis function during commissioning. ESD anti‑static protection shall be followed during installation.