I. Product Overview

Model: F3423

Brand: HIMA

Black Horse (Germany)

Series: HIMatrix F3 / H41q / H51q

Safety System Type: 8-channel fail-safe relay amplification output module

Safety Level: SIL3, PL e, Cat.4, AK6 (TÜV Certified)

Application: SIS, ESD, BMS, F&G Safety System; drives solenoid valves, contactors, alarm horns, sound and light alarms

Installation Method: 4TE standard rack, supports hot swapping

II. Electrical Parameters

Number of channels: 8 independent relay contacts (single-pole double-throw)

Contact capacity: 250VAC / 30VDC, resistive load 5A

Maximum switching voltage: AC 250V, DC 110V

Backplane power supply: 24VDC, power consumption ≤ 2W

Insulation isolation: Voltage withstand between channels, and between system side and field side is 1500Vrms

Operating temperature: -20℃ ~ +60℃

Protection level: IP20

Size: 4TE (width 20mm)

Weight: Approximately 0.4kg

III. Functions and Safety Features

Fault safety design: Contacts automatically open when power is lost or in case of a fault, ensuring safe shutdown of the equipment.

Strong load driving: Optimized for 24V/48V DC solenoid valves and small contactors.

Comprehensive self-diagnosis: Detects coil faults, contact sticking, short circuits, and open circuits.

Indicator lights: Status lights for each channel, power/fault indicator lights, intuitive maintenance.

Redundancy compatibility: Supports QMR/TMR redundant safety architecture.

IV. Typical Applications

ESD emergency stop: Process cut-off valve, actuator

BMS boiler system: Fuel valve, igniter, purge valve

F&G fire protection system: Alarm horn, sprinkler valve, fire door interlock

Third-party dry contact interface, safety signal amplification

V. Differences between F3422 and F3423 (Key Points)

F3422: Ordinary relay output module, universal type, applicable to both AC and DC.

F3423: Relay amplification module, with stronger DC driving capability, specifically optimized for solenoid valves, coil-type loads, shock resistance, and anti-sticking.

VI. Wiring and Maintenance

System side: 24VDC safety control signal

Field side: Each channel common terminal, normally open, normally closed (COM/NO/NC)

Maintenance: Supports hot-swappable without downtime, online replacement

Software: SILworX, ELOP II configuration, diagnosis, fault reading