HIMA F3AIO 8401

Technical Specifications

Safety certification SIL 3 (IEC 61508, IEC 61511), PL e, Category 4; 8 safety‑related analog input channels; 4 analog output channels without native safety rating but supporting safe shutdown; power supply 24 VDC (‑15 % ~ +20 %); 2 × RJ‑45 10/100 Mbit/s Ethernet switch ports; response time ≥20 ms; operating temperature ‑20 °C ~ +60 °C; IP20 protection grade; weight 0.3 kg.

Functional Features

SafeEthernet redundant communication support; per‑channel line fault diagnosis for analog inputs; configurable 4‑20 mA / 0‑20 mA signal ranges; integrated Ethernet switch for daisy‑chain network topology; status LED for power, communication and each channel fault; analog outputs can be forced to safe state by master safety logic.

Application Scenarios

Oil‑gas SIS safety system, chemical plant safety interlock, boiler and turbine auxiliary safety control, hazardous zone 2 field remote signal collection, machinery safety protection systems.

Performance Parameters

Analog input resolution 16‑bit; conversion accuracy ±0.1 % full scale; output load resistance maximum 500 Ω; galvanic isolation between field side and internal bus.

Material Composition

Aluminum alloy heat‑dissipation base, ABS plastic outer housing, gold‑plated plug‑in terminal blocks, conformal‑coated industrial circuit board.

Structural Features

Compact box‑type module; plug‑gable removable terminal blocks on front face; two Ethernet RJ‑45 sockets on lower section; built‑in 35 mm DIN‑rail buckle at rear.

Working Principle

Collects analog current signals from field transmitters; converts analog signals to digital values and performs internal fault checking; transmits digital data to safety master via SafeEthernet; receives output set‑points from master controller and converts to analog current for field actuators.

Installation Requirements

Install on 35 mm standard DIN‑rail inside control cabinet; keep clearance for natural convection cooling; SELV/PELV isolated 24 VDC power supply must be used; wire shielded twisted‑pair cables for analog signal lines; ground cable shield single‑end at cabinet side only.

Usage Precautions

Do not operate module outside permitted temperature range; verify safety‑related parameter configuration via SILworX tool before commissioning; replace complete module unit in case of hardware fault; analog output channels shall not be used for safety‑critical actuator driving without master‑side safe shutdown logic.