Siemens 6ES7138-7FA00-0AB0 SIMATIC ET 200iSP 4F-AI HART Ex SIL3 Fail-safe Remote I/O Module

The Siemens 6ES7138-7FA00-0AB0 is a fail-safe SIMATIC ET 200iSP analog input module with 4 HART-capable current channels for connecting 2-wire transmitters in intrinsically safe Zone 1 areas, certified SIL 3 per IEC 61508, PLe per ISO 13849-1, and Category 4 per EN 954-1. It runs on 19.2-30 V DC and supports HART protocol version 7.0.

Technical Specifications

Certifications & Standards

• CE

Selection Notes

HART pass-through lets this module read transmitter diagnostics and secondary variables over the 4-20 mA loop, so pick it over a plain fail-safe current input when HART device configuration or asset data is needed from the field. The SIL 3 / PLe / Category 4 rating means the fail-safe logic can sit directly in this I/O module rather than requiring a separate safety PLC downstream. Its Ex ib (ia Ga) IIC T4 Gb marking covers Zone 1 gas areas via the associated-apparatus concept, so 2-wire HART transmitters can be wired directly into the hazardous zone.