The HIQuad series single-channel Safety Central Module is a TÜV-certified SIL 3 safety controller compatible with the HIMA PES Safety Instrumented System.
It is designed for critical safety applications, including Emergency Shutdown (ESD), Fire & Gas (F&G) monitoring, and Burner Management Systems (BMS).

The HIQuad series has entered its product replacement phase and can be seamlessly upgraded to the HIQuad X platform, ensuring long-term system continuity and modernization.

Core Advantages

Single-channel safety architecture ensuring deterministic and secure computation

Support for multiple industrial communication protocols

High diagnostic coverage, meeting stringent functional safety requirements

Designed for harsh industrial environments

Easy installation and maintenance, reducing lifecycle costs

Technical Specifications
Processor and Memory

Processor: 32-bit industrial processor

Memory: 32 MB RAM

Communication Interfaces

PROFIBUS DP

Modbus TCP

EtherNet/IP

Power Supply

24 V DC redundant inputs

Operating voltage range: 18–32 V DC

System Compatibility and Accessories

Fully compatible with HIQuad series I/O modules and communication modules

Requires a dedicated HIQuad motherboard and power supply module

Environmental Specifications
Parameter Specification
Operating Temperature −20 °C to +70 °C
Storage Temperature −40 °C to +85 °C
Relative Humidity ≤ 95% (non-condensing)
Vibration Resistance 10–150 Hz
Shock Resistance 15 g, 11 ms

HIMA H51q-H Safety System

Typical Applications

Emergency Shutdown (ESD) systems

Fire & Gas detection and protection

Burner Management Systems (BMS)

High-integrity process safety systems (SIL 3)