Description
Core Product Summary
The HIMA F3226A is a safety-related digital input module designed for the HIQuad safety system platform (including H41q and H51q controller series). Engineered for high-integrity industrial safety instrumented systems (SIS), this module acquires digital switching signals from critical field devices such as emergency stop buttons, interlocks, and limit switches.
Integration into safety architectures is backed by SIL 3 functional safety compliance, providing dependable signal processing for emergency shutdown systems (ESD) and burner management applications. The module processes 24 V DC field input signals while delivering continuous channel-level diagnostic monitoring and optical isolation to maintain system integrity against electrical interference.
Key Technical Specifications
| Parameter | Specification Value |
| Product Type | Safety Digital Input Module |
| System Series | HIMA HIQuad Safety System (H41q / H51q family) |
| Safety Integrity Level | SIL 3 (IEC 61508) |
| Input Channels | 8 Digital Input channels |
| Nominal Field Voltage | 24 V DC |
| Diagnostics | Integrated channel-level self-diagnostics and fault reporting |
| Operating Temperature Range | -20 °C to +60 °C |
| Mounting Format | Plug-in module for HIQuad safety racks |
Detailed Product Overview
The HIMA F3226A functions as a dependable signal acquisition card within HIQuad safety instrumented systems. Its primary role is to monitor binary field states accurately and transfer validated input data securely to the central safety controller for execution of protective shutdown logic.
The module incorporates robust internal diagnostics that monitor input voltage thresholds and channel health in real time. This continuous monitoring aids in early fault detection, helping industrial operators maintain high availability and prevent unwanted spurious trips in safety-critical process environments like oil, gas, chemical, and power generation plants.
F3226A
F3226A
System Compatibility & Integration Requirements
| Item / Dependency | Verified Compatibility or Requirement | Practical Note |
| Controller Platform | HIMA HIQuad (H41q / H51q) safety systems | Inserts directly into dedicated slots within standard HIQuad backplane racks. |
| Field Signal Input | 24 V DC discrete sensor/switch inputs | Field wiring must be landed correctly on designated system termination assemblies. |
| Engineering Toolset | HIMA safety programming and configuration software | Configuration parameters and hardware definitions must align with the active safety project file. |
| Environmental Limits | Indoor cabinet installation | Requires a protective housing rated to withstand the plant environment and maintain proper operating temperatures. |
Dimensions, Mounting & Connection Notes
- Physical Format: Standard plug-in board designed for standard HIMA HIQuad rack card slots.
- Wiring Terminations: Connects to field signals via matching system terminal blocks or pre-engineered marshalling cabling.
- Diagnostic Indicators: Front-face status LEDs display module health, power status, and individual channel input states.
- Grounding Requirements: Must maintain secure backplane and chassis grounding to preserve noise immunity and safety isolation ratings.
FAQ
What is the HIMA F3226A?
The F3226A is a safety digital input module built for HIMA’s HIQuad safety system platform to monitor critical field interlocks and emergency signals.
Which controller series is the F3226A compatible with?
It is designed specifically for use within HIMA HIQuad safety systems, such as the H41q and H51q architecture series.
What safety rating does this input module carry?
It is certified for applications requiring up to SIL 3 safety integrity levels in accordance with IEC 61508.
How many input channels does the F3226A provide?
The module features 8 digital input channels designed to handle 24 V DC field signals.
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