Siemens 6ES5430-4UA11 SIMATIC S5 Digital Input Module

Description

The 6ES5430-4UA11 is a digital input module for the Siemens SIMATIC S5 automation system. It provides 32 floating inputs for 24V DC signals, making it a crucial component for interfacing with sensors, switches, and other field devices in legacy industrial applications. This module is compatible with the S5-115U, S5-135U, and S5-155U PLC systems.

Specifications

• Manufacturer: Siemens
• Product Series: SIMATIC S5
• Model Number: 6ES5430-4UA11
• Product Type: Digital Input Module
• Number of Inputs: 32
• Input Voltage: 24V DC
• Input Type: Floating (potential isolated in groups of 16)
• Permissible Input Current: 7mA
• Input Delay: Typically 3ms

Label Info

• Siemens SIMATIC S5
• MLFB: 6ES5 430-4UA11
• FS: 03

Application

This module is used in a wide range of industries for machine control, process automation, and manufacturing tasks that were built on the Siemens S5 platform. It is ideal for spare parts inventory or for repairing existing systems to avoid costly full-system upgrades.

Country of Origin

Made in Germany.

CO2 Impact

Opting for a reconditioned 6ES5430-4UA11 module instead of a new alternative prevents the emission of approximately 20.0 kg of CO2. This saving corresponds to driving a car for about 100 kilometers.

Availability

This is an obsolete item, but it is available from our stock. Order now from PLC2Day for expert support and fast delivery.

FAQ

Question? Which SIMATIC S5 PLCs is this module compatible with?

This module is designed for use with the central controllers of the S5-115U, S5-115H, S5-115F, S5-135U, and S5-155U systems.

You need a Siemens S5 front connector with screw terminals, typically a 48-pole connector with the part number 6ES5497-4UA12 or a similar compatible version.

The inputs are galvanically isolated from the S5 backplane bus. They are organized into two groups of 16 inputs, where each group shares a common potential. This design prevents ground loops and protects the PLC's internal circuits from external electrical noise and disturbances.

Last Update: Friday, March 13, 2026

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