Siemens 6ES5436-4UA12 Digital Input Module

This digital input module acquires binary signals from field sensors and switches. It transfers these signals to the SIMATIC S5 CPU for logic processing. Therefore, this component suits limit switches, proximity sensors, and pushbutton applications.

Physical Dimensions and Weight Specifications

The Siemens 6ES5436-4UA12 occupies one standard slot in the S5 rack. Its housing measures 233 mm in depth for backplane connectivity. The module weighs approximately 0.42 kg for straightforward handling. Consequently, technicians can install this unit without additional rack reinforcement.

Interface Types and Connection Layout

The Siemens 6ES5436-4UA12 provides a 48-pin front connector for sensor wiring. A second 20-pin backplane connector supplies power and data to the CPU. The front panel carries LED indicators for each active input channel. Hence, operators can monitor signal states at a quick glance.

Component Count and Channel Configuration

This digital input module contains one main board with 32 independent input channels. Each channel uses an optocoupler for electrical isolation from the field. You will also find a built-in RC filter for noise rejection. An onboard LED driver illuminates the front panel indicators for active channels.

Energy Storage and Power Consumption

The Siemens 6ES5436-4UA12 draws 90 mA from the 5V backplane supply. It also requires 15 mA per active channel from the 24V field supply. A small capacitor bank absorbs voltage spikes from long sensor cables. This storage protects the optocouplers from damage during switching events.

Signal Processing and Response Time

The module scans all 32 inputs within a 5 ms cycle time. It updates the CPU with fresh data after each scan completes. Users can connect this unit directly to 2-wire proximity sensors. This direct connection reduces cabinet space and terminal block requirements significantly.