HIMA F3237 984323702 digital input module

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HIMA F3237 984323702

HIMA Paul Hildebrandt GmbH F3237 (Order No. 984323702) is a safety-related digital input module designed for HIMA safety control systems, especially for connection of safety proximity switches, NAMUR proximity sensors, and resistor-wired sensors. It is part of the HIMA HIQuad safety system family.

Product Overview

The HIMA F3237 984323702 provides 8 safety-related input channels for monitoring field devices in safety-critical industrial applications. The module performs continuous self-diagnostics during operation and detects faults such as sensor line breaks, short circuits, and input circuit errors.

Technical Specifications

Parameter	Specification
Manufacturer	HIMA
Model	F3237
Order Number	984323702
Product Type	8-channel Safety Input Module
System	HIMA HIQuad Safety System
Function	Safety-related digital input acquisition
Input Type	NAMUR proximity switches / safety sensors
Safety Requirement Class	AK 1 … 6
Supply Voltage	8.2 V DC (sensor supply)
Module Supply	5 V DC / 24 V DC
Switching Time	Approx. 10 ms
Space Requirement	4 TE
Line Monitoring	Short circuit and wire break detection
Cable Length	Up to 1000 m (0.5 mm² cable)
Line Impedance	≤ 50 Ω
Operating Current	5 V DC: approx. 90 mA; 24 V DC: approx. 170 mA

 

Signal Monitoring Characteristics

• 0 Signal: 0.35 mA ≤ IE ≤ 1.2 mA
• 1 Signal: 2.1 mA ≤ IE ≤ 6.0 mA
• Wire Break Detection: IE ≤ 0.28 mA
• Short Circuit Detection: IE ≥ 6.5 mA

The module uses current-based monitoring to ensure reliable detection of sensor status and wiring faults.

Diagnostic Functions

The F3237 performs automatic online tests, including:

• Input circuit cross-talk monitoring
• Input filter function checks
• Module function verification
• Sensor line short-circuit detection
• Sensor line break detection
• Switching capability tests

(Note: LED functionality is not included in the automatic test routine.)

Application Areas

HIMA F3237 modules are commonly used in safety-related automation systems for:

• Oil & gas production facilities
• Petrochemical plants
• Power generation systems
• Emergency Shutdown Systems (ESD)
• Burner Management Systems (BMS)
• Process safety instrumented systems (SIS)
• Industrial machinery safety applications

 

Product Advantages

• High reliability for safety-critical applications
• Continuous self-diagnostics during operation
• Supports NAMUR and safety proximity sensors
• Fast fault detection and response
• Suitable for SIL-rated safety architectures when integrated into certified HIMA systems
• Easy replacement for existing HIMA HIQuad installations

Conclusion

The HIMA F3237 984323702 is a reliable 8-channel safety input module designed for high-integrity safety control applications. With integrated diagnostics, line monitoring, and compatibility with safety sensors, it is widely used in industrial safety systems requiring dependable signal acquisition and fault detection.