Description
The Siemens 6ES5431-7LA11 is a digital input module designed for the SIMATIC S5-115 series programmable logic controller (PLC) systems. This module provides 16 isolated digital input channels, specifically engineered to interface with 24-48V AC signal levels. As a legacy component, it is frequently utilized in established industrial automation environments where reliable signal acquisition from field devices is required.
Features
- 16 isolated digital input channels
- Compatible with 24-48V AC input voltage ranges
- Designed for integration with the SIMATIC S5-115 PLC platform
- Robust construction suitable for industrial control cabinet environments
Applications
This module is intended for use in industrial control systems requiring the monitoring of AC-based digital signals. Typical applications include status monitoring of limit switches, pushbuttons, and auxiliary contacts in manufacturing, process control, and power distribution systems where the S5-115 architecture is deployed.
Technical Specifications
| Model Number | 6ES5431-7LA11 |
| Manufacturer | Siemens |
| Module Type | Digital Input Module |
| Number of Inputs | 16 |
| Input Voltage | 24-48V AC |
| Isolation | Isolated |
| Tariff Code | 8538903000 |
Installation Guidelines
- Ensure the PLC rack power is disconnected before installing or removing the module to prevent electrical damage or short circuits.
- Verify that the input voltage levels match the 24-48V AC specification of the module before wiring.
- Ensure proper grounding of the S5-115 chassis to maintain signal integrity and safety.
- Route signal wiring away from high-voltage power cables to minimize electromagnetic interference (EMI).
- Handle the module using standard ESD (Electrostatic Discharge) precautions to protect sensitive internal circuitry.
FAQ
Is this module still in production?
No, the 6ES5431-7LA11 has been discontinued by the manufacturer. We provide these units as refurbished or surplus stock to support legacy maintenance requirements.
What voltage range does this module support?
This specific model is designed for 24-48V AC input signals.
What's clients say about us
Excellent Emergency Support!
Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.
Mark Thompson
Maintenance Manager, USAReliable Source for New Spares
Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.
Robert Hoffmann
Engineering Lead, GermanyTop-tier Service and Quality
We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.
Lucas Müller
Operations Director, GermanyRelated Products
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Guide
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