HIMA F3 Series Modules: F35O14

Technical Dossier

Product Details And Specifications

HIMA F3 Series: Comprehensive Module Range and Technical Overview

The HIMA F3 Series is a safety-rated programmable controller platform engineered for deployment in high-consequence industrial environments, including chemical processing plants, nuclear power stations, petroleum refineries, and offshore production facilities. Certified to IEC 61508 SIL 3 and compliant with IEC 61511 for process safety applications, the F3 Series has accumulated decades of installed base across global heavy industry. Its modular backplane architecture allows system integrators to configure redundant safety instrumented systems (SIS) with deterministic scan times and fault-tolerant I/O expansion. The platform's long production lifecycle — spanning from the late 1980s through the 2010s — means a substantial number of operating facilities continue to rely on F3 hardware for safety-critical loop control, emergency shutdown (ESD), and burner management systems (BMS). The F35O14 Analog I/O Module is one of the core field interface modules within this architecture, providing mixed analog signal conditioning for process variable acquisition and actuator command output.

The Evolution of F3 Series Architecture

The HIMA F3 Series was introduced as a successor to earlier relay-based safety systems, establishing a microprocessor-based safety PLC architecture at a time when IEC 61508 was still in draft form. Early F3 configurations relied on single-processor CPU modules with hardware-based watchdog circuits. As functional safety standards matured, HIMA introduced dual-channel and quad-redundant CPU variants within the F3 family, enabling 1oo2D (one-out-of-two with diagnostics) and 2oo4D voting architectures required by SIL 3 applications.

The backplane bus evolved from a proprietary parallel bus to a high-speed serial safety bus, improving noise immunity in electrically harsh environments such as motor control centers and high-voltage switchgear rooms. I/O modules like the F35O14 were designed with galvanic isolation and HART pass-through capability on analog channels, allowing field device diagnostics to coexist with safety loop integrity. Later F3 revisions introduced enhanced diagnostics, reduced module footprint, and compatibility with HIMA's HIMatrix and HIMax platforms as migration targets. Facilities that cannot justify a full platform migration continue to operate F3 hardware under extended lifecycle support agreements, making spare parts availability a critical operational concern.

F3 Series Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly deployed modules within the HIMA F3 Series. Each entry includes a concise functional description for engineering reference and spare parts identification.

F35O14: 14-channel mixed analog I/O module, 4–20 mA, SIL 3 rated, galvanic isolation per channel.
F3 DIO 8/8 01: 8 digital inputs / 8 digital outputs, 24 VDC, single-channel safety I/O module.
F3 AI 8 01: 8-channel analog input module, 4–20 mA / 0–10 V selectable, SIL 2/3 capable.
F3 AO 4 01: 4-channel analog output module, 4–20 mA, loop-powered, SIL 3 rated.
F3 DI 16 01: 16-channel digital input module, 24 VDC, high-density field interface.
F3 DO 8 01: 8-channel digital output module, 24 VDC / 2 A per channel, relay-compatible.
F3 CPU 01: Single-processor safety CPU, 32-bit architecture, IEC 61131-3 programming environment.
F3 CPU 02: Dual-processor redundant CPU module, 1oo2D voting, hot-standby failover.
F3 CPU 04: Quad-redundant CPU module, 2oo4D voting architecture, nuclear-grade applications.
F3 PS 24 01: 24 VDC power supply module, redundant feed capability, internal diagnostics.
F3 PS 48 01: 48 VDC power supply module, designed for telecom and substation environments.
F3 COM 01: Serial communication adapter, RS-232/RS-485, Modbus RTU master/slave.
F3 COM 02: PROFIBUS DP communication module, DP-V1 slave, cyclic and acyclic data exchange.
F3 COM 03: Ethernet TCP/IP communication module, HIMA SafeEthernet protocol support.
F3 BM 01: Backplane bus master module, manages I/O slot addressing and bus arbitration.
F3 IM 01: Interface module for remote I/O rack expansion, fiber-optic or copper link.
F3 RTD 8 01: 8-channel RTD/thermocouple input module, Pt100/Pt1000, 2/3/4-wire configurations.
F3 DO 16 01: 16-channel digital output module, 24 VDC, solid-state outputs, short-circuit protected.

Sourcing Hard-to-Find & Obsolete F3 Series Parts

The HIMA F3 Series entered end-of-active-production status, with HIMA's current portfolio centered on the HIMatrix and HIMax platforms. However, the installed base of F3 systems in operating facilities remains substantial, and many sites operate under long-term maintenance contracts that preclude full platform replacement within current budget cycles. DriveKNMS maintains a dedicated inventory of F3 Series modules — including the F35O14 and other analog and digital I/O variants — sourced through certified industrial surplus channels, decommissioned system buybacks, and authorized distributor overstock.

All F3 modules in DriveKNMS inventory are catalogued by revision level and firmware version where applicable, ensuring compatibility with existing backplane configurations. For facilities requiring long-term lifecycle support — including multi-year supply agreements for critical spare modules — DriveKNMS provides documented sourcing plans with lead time commitments. Customers operating under IEC 61511 Management of Functional Safety requirements can request traceability documentation for each module supplied.

Quality Control for the F3 Series Range

The HIMA F3 Series employs a proprietary safety backplane bus with strict electrical timing requirements. DriveKNMS applies a dedicated test protocol for all F3 modules prior to dispatch, addressing the specific failure modes associated with this architecture. Each module undergoes powered functional verification using an F3-compatible test rack, confirming correct bus enumeration, channel-level I/O response, and internal diagnostic register outputs. Analog modules including the F35O14 are tested across the full 4–20 mA signal range with calibrated current sources, verifying linearity, channel isolation integrity, and HART signal pass-through where applicable. Digital I/O modules are tested under load conditions representative of field wiring, including inductive load switching for output modules. CPU modules are verified for boot sequence completion, memory self-test pass status, and communication port functionality. All test results are logged and available upon request as part of the module delivery documentation package.

© 2026 DriveKNMS. All trademarks belong to their respective owners. Specifications are for reference only and subject to change without notice. Verify all parameters against official documentation before installation.