Siemens 6ES5430-4UA12 Digital Input Module | 32 Channels

This Siemens input module provides reliable signal acquisition for industrial control systems. The Siemens 6ES5430-4UA12 processes up to 32 independent digital input channels. Its design prioritizes high-density signal interfacing within minimal panel space. This module suits applications requiring fast and accurate logic level detection. The Siemens 6ES5430-4UA12 handles a broad input voltage range for flexible system integration. Its robust construction ensures stable operation under continuous industrial use.

Physical Dimensions and Mounting Specifications

The module measures 233 mm in height and 25 mm in width. Its overall depth reaches 160 mm, including the front connector. This unit weighs approximately 0.5 kilograms without packaging materials. The housing supports standard 35 mm DIN rail mounting for quick installation. Its narrow width allows placement in crowded control cabinets. The Siemens 6ES5430-4UA12 uses a 48-pin front connector for all signal wiring. This connector accepts solid or stranded wires from 0.5 mm² to 2.5 mm².

Electrical Characteristics and Input Parameters

This module draws a maximum current of 200 mA from a 24 V DC supply. Each input channel features an internal optocoupler for electrical isolation. The input voltage threshold is programmable between 12 V and 24 V DC. All channels share a common reference potential for simplified wiring. The Siemens 6ES5430-4UA12 provides an input delay of approximately 3 milliseconds. It also includes a built-in filter capacitor to suppress transient noise. This capacitor offers an energy storage capacity of 4.7 µF. The module’s input impedance measures roughly 4.7 kΩ for each channel.

Environmental and Operational Limits

Operating temperatures range from 0°C to 60°C without performance degradation. Storage temperatures extend from -40°C to 85°C for safe long-term preservation. Relative humidity tolerance spans 5% to 95% with no condensation. The module’s enclosure meets IP20 protection standards for dry indoor environments. A front panel LED indicates the presence of supply voltage. Another LED shows the operational status of the internal logic.

Detailed Specification Table

Parameter	Specification
Dimensions (H x W x D)	233 mm x 25 mm x 160 mm
Weight	Approx. 0.5 kg
Number of Inputs	32 (digital)
Input Voltage Range	12 V to 24 V DC
Supply Voltage	24 V DC
Current Consumption	200 mA (max)
Connector Type	48-pin front connector
Wire Cross-Section	0.5 mm² to 2.5 mm²
Input Impedance	4.7 kΩ
Input Delay	3 ms (typical)
Filter Capacitance	4.7 µF
Operating Temperature	0°C to 60°C
Protection Class	IP20

Application and Wiring Guidelines

Mount this module vertically on a standard DIN rail within an enclosure. Maintain at least 50 mm clearance above and below for airflow. Connect each input signal using twisted-pair cables for noise immunity. Use the 48-pin connector’s labeled terminals for systematic wiring. The Siemens 6ES5430-4UA12 works directly with S5 series programmable logic controllers. Its high channel count reduces the need for multiple modules. This approach lowers overall system costs and simplifies maintenance. Always verify the supply polarity before initial power-up. Check the input LEDs to confirm proper channel activation.