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Siemens 6ES7131-4BF00-0AA0 SIMATIC ET 200S 8DI Digital Electronics Module

The Siemens 6ES7131-4BF00-0AA0 is an electronics module for the SIMATIC ET 200S distributed I/O system, providing 8 digital inputs at 24V DC. It’s a compact, 15mm-wide module designed to snap onto an ET 200S terminal module, adding digital input points to a distributed I/O station. This module is now listed by Siemens as a spare part, meaning it’s mainly available for maintaining or expanding existing ET 200S installations rather than new system designs. It’s a straightforward, no-frills input module built for simple digital signal sensing in the field.

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Description

The Siemens SIMATIC ET 200S electronics module 6ES7131-4BF00-0AA0 provides 8 digital inputs rated at 24V DC, with each input able to connect a 2-wire sensor directly. It draws its input current from the backplane bus and requires no separate power supply of its own, since it’s powered through the ET 200S power module it’s mounted on. The module includes a status LED for each input, giving a quick visual check of signal state without needing a programming tool connected.

This module supports isochronous operation for applications requiring precise timing synchronization, and it’s electrically isolated between the input channels and the backplane bus for added protection. It has no built-in diagnostic function, keeping it simple and cost-effective for applications that don’t need advanced fault reporting at the module level.

QTech Safety is a leading supplier of Siemens 6ES7131-4BF00-0AA0 SIMATIC ET 200S 8DI Digital Electronics Module in Ireland, offering competitive prices and fast worldwide shipping across United Kingdom (UK), Germany, France, Italy, Spain, United States USA, Canada, Mexico, and Western Australia (Perth). Buy Siemens PLC I/O Modules from one of Ireland’s most trusted industrial safety equipment suppliers.

Features of Siemens 6ES7131-4BF00-0AA0 SIMATIC ET 200S 8DI Digital Electronics Module

  • Compact 15mm-wide digital input module for SIMATIC ET 200S
  • 8 digital inputs rated at 24V DC
  • Supports 2-wire sensor connections directly
  • Status LED indicator for each input channel
  • Isochronous mode support for synchronized applications
  • Electrical isolation between input channels and backplane bus
  • Reverse polarity protection on supply voltage
  • Low power loss, typical 1.2 W
  • No external power supply needed, powered via backplane bus
  • Simple snap-on mounting to ET 200S terminal module
  • Lightweight design at just 35 g

Technical Specifications of Siemens 6ES7131-4BF00-0AA0

  • Product type: Electronics module for ET 200S, 8DI DC 24V
  • Supply voltage: 24V DC (range 20.4V to 28.8V)
  • Reverse polarity protection: Yes
  • Current consumption: Max 10 mA from backplane bus (3.3V DC)
  • Power loss: 1.2 W typical
  • Address space per module: 1 byte
  • Number of digital inputs: 8
  • Input voltage type: DC, rated 24V
  • Signal “0” range: -30V to +5V
  • Signal “1” range: +15V to +30V
  • Input current at signal “1”: 5 mA typical
  • Input delay (0 to 1): 2 ms min, 4.5 ms max
  • Input delay (1 to 0): 2 ms min, 4.5 ms max
  • Max cable length: 1,000 m shielded, 600 m unshielded
  • Connectable encoders: 2-wire sensors
  • Permissible quiescent current (2-wire sensor): Max 1.5 mA
  • Isochronous mode: Supported, TWE = 3,000 µs
  • Diagnostic functions: No
  • Status LED: Yes, green, per input channel
  • Isolation between channels: No
  • Isolation between channels and backplane bus: Yes
  • Permissible potential difference: 75V DC / 60V AC
  • Isolation test voltage: 500V DC
  • Dimensions (W x H x D): 15 x 81 x 52 mm
  • Weight: 35 g approx.

Applications

The Siemens 6ES7131-4BF00-0AA0 SIMATIC ET 200S 8DI Digital Electronics Module is commonly used in:

  • Digital signal sensing in distributed I/O stations
  • Adding input points to existing ET 200S installations
  • Simple sensor connections in field-mounted control panels
  • Machine and process status monitoring
  • Spare part replacement for existing ET 200S systems
  • Applications requiring isochronous synchronization

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