Description

The HIMA F3330 (Order No. 984333002) is a high-integrity, redundant-capable power supply module designed specifically for the HIMA HIMax family of programmable safety systems. It delivers a stable, regulated 24 VDC output at up to 20 A to power safety controllers (e.g., H51q, H41m), I/O modules, and field devices within a Safety Instrumented System (SIS).

Engineered to meet IEC 61508 SIL3 and IEC 61511 requirements, the F3330 ensures continuous, fault-tolerant operation—even during partial failures—making it indispensable in industries where safety system integrity is non-negotiable.

Application Scenarios

At a U.S. LNG export terminal, a fire detection system required uninterrupted power for its HIMax safety logic solver. Two HIMA F3330 984333002 modules were installed in parallel with a redundancy diode module. When one unit failed due to a lightning-induced surge on the AC line, the second instantly assumed full load—keeping the fire suppression logic active without interruption. Post-event analysis confirmed zero downtime. “The F3330 didn’t just supply power—it supplied confidence,” said the site’s functional safety manager.

Technical Principles and Innovative Values

Innovation Point 1: The F3330 uses active current sharing when operated in redundant pairs—ensuring balanced load distribution and preventing thermal runaway in one unit.

Innovation Point 2: Built-in real-time diagnostics monitor output voltage, temperature, fan status (if equipped), and input health—reporting faults directly to the HIMax controller via the backplane.

Innovation Point 3: Wide-range universal input allows global deployment without transformer changes—critical for multinational EPC projects.

Innovation Point 4: Full compliance with IEC 61000-6-2/4 EMC standards ensures immunity to electrical noise from VFDs, welders, or radio transmitters—common in industrial plants.

Application Cases and Industry Value

In a Norwegian offshore platform, F3330 units powered a triple-redundant HIMax system controlling emergency shutdown valves. Despite salt-laden air and constant vibration, the PSUs operated flawlessly for over 5 years—thanks to conformal coating options and robust mechanical design.

In a Chinese coal-to-chemicals plant, the F3330’s ability to ride through 200 ms grid sags prevented spurious trips during frequent utility switching—saving an estimated $1.2M annually in avoided production losses.

Related Product Combination Solutions

HIMA F3130: Power supply carrier/baseplate—required for mounting F3330 in HIMax racks.

HIMA F3390: Redundancy diode module—enables parallel operation of two F3330 units.

HIMA H51q / H41m: Safety controllers—powered by F3330 for SIL3 logic execution.

HIMA F7553 / F7554: Digital I/O modules—rely on clean 24 VDC from F3330.

HIMA Safety Suite: Engineering software—for monitoring PSU diagnostics and alarms.

HIMA PS1124: Alternative compact PSU—for smaller I/O-only subsystems.

ABB UFC762AE101 / GE Mark VIe: Often co-deployed in hybrid control/safety architectures.

Installation, Maintenance, and Full-Cycle Support

Install the HIMA F3330 984333002 into a compatible F3130 power carrier, ensuring secure DIN rail mounting and proper ventilation (minimum 50 mm clearance above/below). Connect AC input per terminal labels and link 24 VDC output to the HIMax backplane or distribution bus. For redundancy, add an F3390 diode module between two PSUs.

Maintenance includes:

Annual inspection of terminals for corrosion or loosening

Verification of output voltage under load using a calibrated meter

Monitoring front-panel LEDs (green = OK, red = fault) and Safety Suite diagnostics

Unlike standard industrial PSUs, the F3330 contains high-grade components rated for 10+ years of continuous operation in demanding environments.