HIMA F3236 Safety Digital Input Module

HIMA F3236 Overview

Model: F3236
Manufacturer: HIMA (Germany)
Type: 16-channel Safety Digital Input Module (Safety DI)
System: HIMA PES / HIMatrix / Safety Instrumented System (SIS)

The F3236 is a very common SIS safety digital input module used to receive field safety signals such as E-Stops, interlocks, and alarms.

Main Applications

Widely used in high-safety industrial facilities, including:

• Oil & Gas
• Chemical plants
• Power generation
• Nuclear / Rail transit
• Emergency Shutdown Systems (ESD)

Its core function:
👉 Collect field safety signals and send them to the safety controller for logic processing.

Core Functions

The F3236 can be understood as a 16-channel digital input card for safety PLCs.

Typical signals collected:

• Emergency stop buttons
• Limit switches
• Safety door status
• Fire & gas alarms
• Interlock contacts
• Equipment status contacts

Module responsibilities:

1. Signal acquisition
2. Signal diagnostics
3. Ensuring reliable transmission into safety logic

Key Technical Specifications

Inputs & Performance

• Input channels: 16 digital inputs
• Input types:
  • 6 mA current signals
  • 24 VDC mechanical contacts
• Typical response time: 8 ms

This fast response is designed for emergency shutdown and safety interlock systems.

Processor & Architecture

• Dual microprocessor architecture (Intel 386EX 32-bit)
• Flash: 1 MB
• SRAM: 1 MB

👉 Dual CPUs provide redundancy and eliminate single points of failure.

Power Requirements

Supports dual power supply operation for high reliability.

Safety Certifications (Key Feature)

The biggest advantage of the F3236 is its safety rating:

• SIL3 (IEC61508 / IEC61511)
• TÜV AK6
• EN954 Category 4

This means it can be used in the highest-level safety instrumented systems.

Typical applications:

• ESD systems
• Fire & Gas systems (F&G)
• Compressor interlocks
• Gas turbine protection

Core Products & Services:

• Control Systems (DCS, PLC, CNC)
• Control Panels & Panel Controllers
• Human Machine Interfaces (HMI) & Display Panels
• Drives & Servo Motors
• Encoders & Resolvers
• Industrial Power Supplies

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