This module is designed for safety-related output execution in Safety Instrumented Systems (SIS). It converts 24 VDC control signals into potential-free relay contacts, providing reliable and fail-safe actuation for ESD, F&G, and safety interlock circuits.
It is fully compatible with HIMA HIMax / HIQuad systems and can be directly driven by HIMA safety controller outputs.

Technical Specifications

Input (Control Side)

Rated voltage: 24 VDC (−15% to +20%)

Power consumption: 1–2 W

Input current: ≤ 20 mA

Output (Contact Side)

Contact type: 1 set of potential-free conversion contacts (sealed relay)

Contact material: AgNi with hard gold plating

Contact Ratings

Switching voltage: 1 mV to 250 V AC/DC

Rated current: ≤ 4 A

AC load capacity: ≤ 1000 VA

DC load capacity:

≤ 120 W (≤ 30 VDC)

≤ 40 W (≤ 250 VDC)

Response Characteristics

Operate (close) time: ≤ 7 ms

Release (open) time: ≤ 5 ms

Contact bounce: ≤ 1 ms

Service Life

Mechanical life: ≥ 10⁷ operations

Electrical life: ≥ 2.5 × 10⁵ operations (at rated load)

Environmental & Mechanical Data

Environmental Conditions

Operating temperature: −25 °C to +50 °C

Protection class: IP20

Installation

Mounting: 35 mm DIN rail / C-type rail

Terminal wire size: 0.25–2.5 mm²

Terminal tightening torque: 0.5–0.6 N·m

Protection & Safety Design

Built-in 4 A time-delay fuse

Coil-to-contact isolation compliant with EN 50178

Overvoltage category III (≤ 300 V)

Fault-safe design: power-off results in safe disconnection

Core Features

Safety-oriented architecture

Fail-safe output behavior

Integrated self-diagnostics for coil, power supply, and contacts

Status LED for real-time condition indication

Low power consumption

Can be directly driven by HIMA safety module outputs

High adaptability

Suitable for Zone 2 hazardous areas

Fully compatible with HIMax / HIQuad systems

Supports networking with HIMA CPU modules (e.g. F8650X)

Typical Applications

Emergency Shutdown (ESD) output circuits

Fire & Gas (F&G) system actuation

Safety interlock and final element control

 

HIMA H51q-HRS Safety System Module

 

Industries:

Petrochemical and chemical processing

Gas turbine and oil & gas facilities

Power generation and transmission

Other safety-critical industrial applications