HIMA F3237 SIL3 Digital Input Module



  • Product Code: F3237
  • Availability: In Stock

Purchase Attributes:Original, Brand New

Service Attributes

▷ Stock & Logistics:Fast Delivery

▷ After-sales Guarantee:12 Months Warranty

▷ Online Customer Service:24 Hours Online Support

▷ Product Advantages:Competitive Price,  Long Service Life

Application Attributes:HIMA F3237 SIL3 Digital Input Module 


HIMA F3237 SIL3 Digital Input Module with Line Break Detection

1. Basic Product Information

Model Number F3237
Module Type SIL3 Safety Digital Input Card
Applicable System HIMax & HIQuad H41q / H51q SIS Platform
Safety Certification TÜV SIL3, IEC 61508, IEC 61511
Channel Configuration 16 isolated digital input channels

2. Key Functional Advantages

  • Built-in full line break detection for each input channel, identify open circuit fault of field wiring in real time
  • Complete channel isolation design to avoid cross-signal interference between different field loops
  • Continuous self-diagnosis for circuit short circuit, overvoltage and module hardware failure
  • Support 24VDC field sensor contact signal collection for ESD, F&G and safety interlock loops
  • Transmit channel status and fault diagnostic data to safety CPU via internal H-Bus backplane
  • Fail-safe response mode, output fault alarm signal once abnormal wiring or channel failure occurs



3. Electrical & Environmental Specifications

Field Input Signal DC 24V dry contact signal
System Supply Voltage DC 24V from rack backplane
Operating Temperature 0°C ~ +60°C
Storage Temperature -40°C ~ +85°C

4. Application & Spare Part Suggestion

F3237 digital input module is specially used for safety loops requiring cable integrity monitoring, widely deployed in petrochemical, oil & gas SIS emergency shutdown systems. It can accurately capture open wire faults which common DI modules cannot detect, improving overall system safety integrity.

When the system continuously reports channel line break faults without actual field wiring damage or module hardware diagnostic alarms, F3237 shall be replaced as emergency spare part. It adopts unified rack slot size, plug-and-play without extra wiring modification.

Remark: F3237 upgrades from standard F3236 DI module with independent line break detection circuit, compatible with all original rack backplanes and terminal plug connectors of HIMax and HIQuad series.

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