Hima F3331

Technical Dossier

Product Details And Specifications

HIMA F3000 Series Technical Notes

The Evolution of F3000 Architecture

The F3000 series was introduced by HIMA Paul Hildebrandt GmbH as a successor to earlier relay-based and first-generation PLC safety systems. The initial F3000 platform established a modular rack architecture with dedicated I/O separation from the CPU bus, a design principle retained across all subsequent generations. Early deployments used single-channel CPU configurations; later revisions introduced the dual-redundant CPU pairing (e.g., F3 DIO 20/8 01 and F3 CPU 04) to meet evolving SIL 3 demands without full system replacement.

The backplane communication protocol evolved from parallel bus to a high-speed serial safety bus, improving noise immunity in high-EMI environments such as motor control centers and high-voltage switchgear rooms. Firmware revisions introduced online modification capability, allowing logic changes under live process conditions — a critical requirement for continuous chemical plants with no scheduled shutdown windows.

As the F3000 series has entered its mature/end-of-active-production phase, HIMA has transitioned new projects toward the HIMax and HIMatrix platforms. However, the installed base of F3000 systems remains extensive. Many operators have elected to maintain F3000 infrastructure through long-term spare parts programs rather than undertake full system migration, given the validation and re-certification costs associated with safety system replacement in regulated industries.

F3000 Full Catalog & Functionalities (SKU List)

CPU & Controller Modules

• F3 CPU 04: Dual-redundant central processing unit, SIL 3 certified, hot-standby capable
• F3 CPU 02: Single-channel CPU module for non-redundant F3000 configurations
• F3 CPU 06: Enhanced CPU with extended memory and faster scan cycle for large logic programs

Digital Output Modules

• F3331: 16-channel digital output module, 24 VDC, SIL 3, solid-state switching with diagnostics
• F3 DIO 20/8 01: Combined 20 DI / 8 DO module, mixed I/O for compact rack configurations
• F3330: 8-channel digital output module, 24 VDC, fail-safe, short-circuit protected
• F3332: 16-channel digital output module, 120/230 VAC relay output, SIL 2 rated

Digital Input Modules

• F3236: 32-channel digital input module, 24 VDC, single-channel, high-density I/O
• F3237: 32-channel digital input module with line fault detection per channel
• F3230: 16-channel digital input module, 24 VDC, SIL 3, with input diagnostics
• F3231: 16-channel digital input module, 120 VAC input compatible

Analog I/O Modules

• F3436: 8-channel analog input module, 4–20 mA / 0–10 V, SIL 2, with HART pass-through
• F3437: 8-channel analog input module, thermocouple and RTD input types
• F3430: 4-channel analog output module, 4–20 mA, SIL 2, loop-powered

Communication & Bus Adapter Modules

• F3 COM 01: PROFIBUS DP master/slave communication module for F3000 rack integration
• F3 COM 02: Modbus RTU/TCP gateway module for legacy DCS interface
• F3 ETH 01: Ethernet communication module, 100 Mbps, for HIMA SILworX engineering tool connectivity

Power Supply Modules

• F3 PS 01: 24 VDC rack power supply module, redundant-capable, 10 A output
• F3 PS 02: 120/230 VAC input power supply module for F3000 main rack

Quality Control for the F3000 Range

The F3000 backplane uses a proprietary high-speed serial safety bus that requires functional verification beyond standard power-on self-test. DriveKNMS applies a multi-stage test protocol to all F3000 modules prior to dispatch:

• Backplane bus communication test: Each module is seated in a live F3000 test rack and verified for correct bus enumeration and data exchange with the CPU module.
• Channel-level functional test: For output modules including the F3331, all 16 output channels are individually actuated and verified against expected switching state under rated load conditions.
• Diagnostic register verification: Internal diagnostic flags (short-circuit detection, open-load detection, supply voltage monitoring) are read and confirmed within specification.
• Firmware revision check: Module firmware is recorded and cross-referenced against known compatible CPU firmware versions to prevent revision mismatch in the target system.
• Thermal cycling inspection: Modules sourced from decommissioned sites undergo visual and thermal inspection for capacitor degradation, solder joint fatigue, and connector wear.