Product Analysis: 6ES7138-4FA05-0AB0
The Siemens 6ES7138-4FA05-0AB0 is a fail-safe **Digital Input Module (4/8 F-DI)** for the SIMATIC ET 200S distributed I/O system. It is designed for safety-related automation tasks using the PROFIsafe profile, allowing standard and safety communication on the same bus.
Safety Characteristics
- Safety Integrity: Up to SIL 3 (IEC 61508) and PLe (ISO 13849).
- Inputs: 8 Inputs (1-channel) or 4 Inputs (2-channel redundant).
- Voltage: 24 V DC.
- Feature: Discrepancy monitoring and Short-circuit testing.
Application
Used to connect safety sensors like light curtains, laser scanners, E-stop buttons, and door switches directly to the ET 200S rack. The **6ES7138-4FA05-0AB0** processes these signals and sends them to a F-CPU (Fail-safe CPU) via PROFINET or PROFIBUS. It is a critical component for protecting personnel in automated cells.
