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- 6ES5431-8FA11
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· Product image is representative; revision or series may vary. Contact us to request a specific version.
We provide 1 year warranty for all remaining parts.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online.
If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.
Amikon offers a wide range of components, products and services related to industrial automation. We have a large surplus of stocks and are also distributors of new products from a variety of quality manufacturers.
Technical specifications for 6ES5431-8FA11
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Product Model6ES5431-8FA11
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Product ParametersDigital input module
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Tariff Code8537101190
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Country of originGERMANY
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Place of shipmentXiamen, China
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In stock1 unit
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Estimated Shipping Size4.5x10x13.4cm
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ManufacturerSiemens
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Weight0.2 kg
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Input Voltage Range24V DC
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Number of Inputs16
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Isolation Voltage500V AC
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Operating Temperature-20°C to +60°C
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Storage Temperature-40°C to +70°C
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Relative Humidity5% to 95% (non-condensing)
Description
The Siemens 6ES5431-8FA11 is a SIMATIC S5 digital input module from the DI 431 series. The module provides 8 isolated 24 V DC digital input channels with failsafe functionality, for integration into SIMATIC S5 programmable logic controller systems.
Each input channel is electrically isolated (floating) from the others and from the controller backplane, providing high noise immunity and enhanced safety for industrial signal acquisition. The failsafe design ensures that the module transitions to a predefined safe state in the event of internal faults or power loss, making it suitable for safety-critical applications.
The module accepts 24 V DC input signals with defined switching thresholds: a "0" signal is recognized at –33 V to +5 V, and a "1" signal is recognized at +13 V to +33 V. Typical input current at the "1" signal is 8.5 mA. Electronic short-circuit protection is provided on each channel. Fault conditions are indicated via front-panel LEDs.
Each input channel is electrically isolated (floating) from the others and from the controller backplane, providing high noise immunity and enhanced safety for industrial signal acquisition. The failsafe design ensures that the module transitions to a predefined safe state in the event of internal faults or power loss, making it suitable for safety-critical applications.
The module accepts 24 V DC input signals with defined switching thresholds: a "0" signal is recognized at –33 V to +5 V, and a "1" signal is recognized at +13 V to +33 V. Typical input current at the "1" signal is 8.5 mA. Electronic short-circuit protection is provided on each channel. Fault conditions are indicated via front-panel LEDs.
Information
Overview
Manuals
Application Notes
Product Applications
Insertion
Features:
- Dedicated fail-safe digital input module for S5-95F
- 8 isolated 24 V DC input channels
- High electrical noise immunity through galvanic isolation
- Rugged industrial design for continuous operation
Each input channel operates with a rated voltage of 24 V DC, accepting signal "1" states from +13 V to +30 V and signal "0" states from 0 V to +5 V. The typical input current at signal "1" is 8.5 mA. Input delay times range from 2.2 to 4.6 ms for "0" to "1" transitions and 4.5 to 12 ms for "1" to "0" transitions. Channels are galvanically isolated from one another and from the backplane bus, providing noise immunity and protection against ground loop interference in industrial environments.
The 6ES5431-8FA11 SIEMENS SIMATIC S5, Digital input 431 for fail-safe may still be available for purchase and support from Amikon Limited beyond End-Of-Life (EOL) by the manufacturer (OEM).
SIEMENS 6ES5431-8FA11 SIMATIC S5, Digital input 431 for fail-safe Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
The SIEMENS 6ES5431-8FA11 is a SIMATIC S5 DI 431 fail-safe digital input module featuring 8 galvanically isolated 24 V DC inputs for the S5-95F PLC. Designed for safety-critical industrial automation, it provides reliable digital signal acquisition for emergency stops, safety interlocks, and machine protection systems, and remains an important spare part for legacy SIMATIC S5 installations.
- Oil/Gas/Petrochemical: Controls offshore platforms, pipelines, and refineries to prevent hazardous failures and costly restarts
- Water/Wastewater: Manages pumping stations and treatment networks requiring unsupervised continuous execution
- Chemical Processes: Automates reactors and processing lines with no data loss and continuous critical monitoring
- Infrastructure: Manages fault-tolerant tunnel lighting and traffic management systems
- Power Generation: Controls boilers and auxiliary equipment to prevent costly unscheduled blackouts
This content has been produced using multiple sources.Amikon takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
Slot Compatibility: The module is designed to slide into the standard S5 central rack or expansion rack. It relies on a backplane connector for communication and internal power (+9 V and +5 V).
Alignment: Carefully align the module with the guide rails in the subrack and slide it straight back.
Securing: Push firmly until the module is fully seated in the backplane connector. Secure it by tightening the retaining screws at the top and bottom of the front plate.
Alternative Names
6ES5431-8FA1I
6ES5431-8FAI1
6ES543I-8FA11
6ES543I-8FAII
Technical notes
The 6ES5431-8FA11 is specifically designed for the S5-95F failsafe PLC, and is also compatible with S5-90U, S5-95U, S5-100U, and S5-115U/F controllers. It is used in industrial automation, factory automation, and process control applications where reliable digital signal acquisition with safety considerations is required.
FAQs
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What is 6ES5431-8FA11?
+The Siemens 6ES5431-8FA11 is a fail-safe digital input module from the SIMATIC S5 series, featuring 8 isolated inputs operating at 24 VDC. -
What controllers are compatible with this module?
+This module is primarily built to work with the Siemens SIMATIC S5-95F Programmable Logic Controller (PLC). -
What is the operational voltage?
+The module operates natively on a 24 V DC logic voltage level. -
Which specific CPU or system is it intended for?
+It is built for integration with the S5-95F fail-safe PLC system.
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