Siemens 6ES7131-4BD01-0AA0: Digital Input Module for ET 200S System

Meet the Siemens 6ES7131-4BD01-0AA0, a 24V DC digital input module for the SIMATIC ET 200S distributed I/O system. This compact module provides four standard digital input channels, each with a width of only 15 mm. Moreover, it seamlessly integrates into the ET 200S rack via the backplane bus for efficient data exchange. Consequently, it is a perfect solution for acquiring binary sensor signals in space-constrained control cabinets.

Detailed Technical Specifications

The 6ES7131-4BD01-0AA0 delivers reliable signal acquisition with precise electrical characteristics. Below are its key technical parameters for correct system wiring and configuration.

Core Functionality and System Integration

This module reads the status of switches, proximity sensors, or other 24V DC devices. Therefore, it converts field-level signals into reliable logic data for the programmable controller. Additionally, its wide input voltage range from 20.4V to 28.8V ensures stable operation despite typical line fluctuations.

The integrated reverse polarity protection safeguards the module from wiring errors. Furthermore, the module can supply power to connected two-wire sensors via its 500 mA rated output. For comprehensive system safety, always pair such I/O modules with appropriate circuit protection like a RMS-TSG-TZ-C Static Trip device.

Engineered for Efficient and Dense I/O Layout

Choosing the Siemens 6ES7131-4BD01-0AA0 maximizes your ET 200S station’s channel density. Its slim 15mm design allows more modules per mounting rail, optimizing cabinet space. Ultimately, this module provides a cost-effective and reliable foundation for building scalable and high-performance distributed control systems.