HIMA F3237 Safety Input Module

Product Overview

Model: F3237
Series: HIMA Safety System
Manufacturer: HIMA Paul Hildebrandt GmbH

The HIMA F3237 is an 8-channel safety-related digital input module designed for HIMA safety control systems. It is used to connect safety-related proximity switches, NAMUR sensors, and resistor-based sensors. The module provides reliable signal monitoring with short-circuit and wire-break detection, making it suitable for high-integrity safety applications.

Technical Specifications

• Product Type: Safety Input Module
• Model: F3237
• Input Channels: 8 channels
• Input Type: Safety-related digital input
• Supported Sensors:
  • Safety proximity switches
  • NAMUR proximity switches (DIN 19234 / EN 60947-5-6)
  • Resistor-wired sensors
• Safety Level: Up to SIL 3 (IEC 61508)
• Sensor Supply Voltage: 8.2 VDC
• Switching Time: Approx. 10 ms
• Signal Threshold:
  • 0 Signal: 0.35–1.2 mA
  • 1 Signal: 2.1–6.0 mA
  • Wire Break Detection: ≤0.28 mA
  • Short Circuit Detection: ≥6.5 mA
• Line Impedance: ≤50 Ω
• Maximum Cable Length: ≤1000 m (0.5 mm² cable)
• Power Consumption:
  • 5 VDC: approx. 90 mA
  • 24 VDC: approx. 170 mA
• Mounting: HIMA safety system rack

Advantages & Features

• High Safety Reliability
  Designed for safety-related applications requiring high availability and fault detection.
• 8-Channel Input Design
  Allows multiple safety sensors to be connected within one compact module.
• Line Fault Monitoring
  Detects sensor wiring faults such as short circuits and wire breaks.
• Automatic Self-Test Function
  Performs continuous diagnostic checks during operation to improve system reliability.
• NAMUR Sensor Compatibility
  Supports industrial safety sensors widely used in process automation.
• Fast Signal Response
  Provides approximately 10 ms switching response for safety control applications.

Applications

• Emergency Shutdown Systems (ESD)
• Fire & Gas Detection Systems
• Safety Instrumented Systems (SIS)
• Oil & Gas Facilities
• Chemical Processing Plants
• Power Generation Systems
• Industrial Safety Interlock Systems

Precautions

• Verify compatibility with the HIMA safety controller before installation.
• Confirm sensor type and wiring method before connection.
• Ensure proper grounding and shielding for signal cables.
• Do not exceed specified input parameters.
• Safety configuration should only be performed by qualified personnel.
• Test safety functions after installation and maintenance.