Siemens 6ES5422-8MA11 Digital Input Module

High-Density Digital Input for SIMATIC S5 Systems

The 6ES5422-8MA11 digital input module provides 32 discrete input channels for the SIMATIC S5 automation platform. This module accepts 24 V DC signals from field devices such as pushbuttons, limit switches, and proximity sensors. It features high-density packaging, saving valuable rack space. Consequently, this module suits large-scale automation systems requiring many input points.

Technical Specifications

Input Characteristics and Performance

Each input channel on the 6ES5422-8MA11 meets Type 1 characteristics per EN 61131-2 standards. The module draws 8 mA nominal current per input at 24 V DC. It provides a response time of less than 5 ms for fast signal capture. Furthermore, the module features optoelectrical isolation between the inputs and the backplane bus. Consequently, this design protects against electrical noise and voltage spikes.

Connectivity and System Integration

The 6ES5422-8MA11 connects directly to field devices via screw terminals. It communicates with the CPU through the S5 backplane bus. The module occupies a single slot in the S5 rack. The front panel includes 32 LED indicators, one for each input channel, displaying real-time field signal status.

Physical Characteristics and Installation

Weighing approximately 0.55 kg, this module fits standard S5 rack configurations. Its compact design uses screw terminal connections. The module draws power from the 5 V DC backplane bus. The front panel provides clear labeling for easy channel identification.