Siemens 6ES7136-6AA00-0CA1 SIMATIC ET 200SP F-AI 4xI 0(4)..20mA HF Fail-safe Remote I/O Module

The Siemens 6ES7136-6AA00-0CA1 is a SIMATIC ET 200SP fail-safe analog input module with 4 current inputs (0/4-20 mA), rated up to SIL 3 (IEC 61508) and Performance Level e / Category 4 (ISO 13849-1). It offers 16-bit resolution, sigma-delta conversion, and channel-level wire-break and short-circuit diagnostics for safety-instrumented process loops.

Technical Specifications

Selection Notes

The F designation and SIL 3 / PL e rating make this module suitable for safety-instrumented functions reading 4-20 mA process transmitters directly into a fail-safe SIMATIC CPU, without a separate safety PLC. The 2-/4-wire connection option and 125 ohm input resistance on both the 0-20 mA and 4-20 mA ranges cover standard transmitter wiring without external burden resistors. Choose this HF (high-feature) variant when per-channel wire-break and short-circuit diagnostics are needed to meet SIL 3 diagnostic coverage; a standard, non-F AI module is sufficient where the loop is not part of a safety function.

Applications

Deployed in ET 200SP distributed I/O stations for safety-related analog measurement — pressure, level, and flow transmitters — in SIL 2/3 safety instrumented systems across process and machine safety applications.