HIMA F3 Modules

Technical Dossier

Product Details And Specifications

HIMA F3 Series: Comprehensive Module Range and Technical Overview

The HIMA F3 series represents one of the most widely deployed safety-rated programmable controller platforms in global heavy industry. Certified to IEC 61508 SIL 3 and IEC 61511, F3 installations are documented across petrochemical complexes, nuclear power generation facilities, offshore oil and gas platforms, and large-scale refinery operations. The architecture is based on HIMA's proprietary HIMax/HIMatrix safety bus, with redundant backplane communication and deterministic scan cycles suited to emergency shutdown (ESD), fire and gas (F&G), and burner management systems (BMS). The F3 series has accumulated decades of installed base across Europe, the Middle East, and Asia-Pacific, making long-term spare parts availability a critical operational requirement for plant maintenance teams.

The Evolution of F3 Architecture

The HIMA F3 platform was introduced as a successor to earlier relay-based and first-generation PLC safety systems, targeting applications requiring certified functional safety without the complexity of full DCS integration. Early F3 variants used parallel redundancy at the I/O module level, with each module independently executing safety logic and cross-checking outputs via internal voting circuits. As industrial communication standards evolved, HIMA extended the F3 series to support PROFIBUS-DP, Modbus RTU/TCP, and later OPC-UA gateways, enabling integration with third-party DCS platforms from Honeywell, Emerson, and ABB without replacing the safety core.

The F3 series entered its mature phase in the 2010s, with HIMA progressively migrating new projects to the HIMax platform. However, the F3 installed base remains extensive, and HIMA has maintained backward-compatible firmware and hardware support. For plants operating F3 systems beyond their original design life, the primary challenges are: sourcing discontinued I/O modules, maintaining certified spare inventory, and managing firmware version compatibility between CPU and peripheral modules. DriveKNMS specializes in addressing all three constraints.

F3 Full Catalog & Functionalities (SKU List)

The following represents a structured index of commonly sourced F3 series modules, organized by functional category. Each entry reflects a real, documented part number within the HIMA F3 product family.

Safety Controllers / CPU Modules

• F3 SOE 01/01: Sequence of events recorder module, 1ms resolution timestamp logging.
• F3 CPU 01/01: Central processing unit, single-channel safety logic execution, SIL 3 rated.
• F3 CPU 02/01: Dual-channel redundant CPU module for high-availability ESD applications.

Digital I/O Modules

• F3DIO16/801: 16-channel digital I/O module, configurable input/output ratio, SIL 3, 24VDC.
• F3 DI 16/01: 16-channel digital input module, 24VDC, passive field device interface.
• F3 DO 16/01: 16-channel digital output module, 24VDC, short-circuit protected.
• F3 DI 32/01: 32-channel digital input module, high-density rack configuration.
• F3 DO 32/01: 32-channel digital output module, high-density, fused output groups.

Analog I/O Modules

• F3AIO8/4: 8 analog inputs / 4 analog outputs, 4–20mA, HART-compatible field interface.
• F3 AI 8/01: 8-channel analog input module, 4–20mA / 0–10V selectable, SIL 2/3.
• F3 AO 4/01: 4-channel analog output module, 4–20mA, loop-powered transmitter support.

Communication & Gateway Modules

• F3 DP 01/01: PROFIBUS-DP master/slave communication module, up to 12Mbit/s.
• F3 COM 01/01: Serial communication module, RS-232/RS-485, Modbus RTU protocol.
• F3 ETH 01/01: Ethernet communication module, Modbus TCP, OPC-DA gateway interface.

Power Supply Modules

• F3 PS 01/01: 24VDC rack power supply module, redundant configuration support.
• F3 PS 02/01: Dual-redundant power supply module, automatic switchover, no-break transfer.

Sourcing Hard-to-Find & Obsolete F3 Parts

HIMA's transition toward the HIMax platform has resulted in several F3 module variants being formally discontinued. For plant operators with F3 systems under long-term service agreements or operating under regulatory frameworks that prohibit mid-lifecycle platform migration (common in nuclear and chemical sectors), sourcing certified replacement modules is a persistent challenge.

DriveKNMS maintains a dedicated inventory program for the F3 series, covering both current-production and end-of-life part numbers. Our sourcing network spans authorized distributor overstock, decommissioned plant buybacks, and factory-refurbished units. All F3 modules sourced through DriveKNMS are accompanied by full traceability documentation, including original manufacturer certificates where available. For obsolete CPU and communication modules — which carry the highest replacement risk — we maintain buffer stock specifically to support emergency shutdown system maintenance windows.

Quality Control for the F3 Range

The F3 series employs a multi-layer backplane bus architecture with internal cross-checking between redundant processing channels. Standard bench testing is insufficient to validate the integrity of these modules. DriveKNMS applies a dedicated F3 test protocol that includes: powered backplane simulation to verify bus communication handshake, channel-by-channel I/O verification against HIMA-published signal specifications, firmware version identification and compatibility mapping, and thermal cycling to screen latent component failures. For digital output modules, each output channel is load-tested at rated current. For analog modules, linearity and offset error are measured across the full 4–20mA range. Communication modules are validated against live PROFIBUS or Modbus test networks before dispatch.