Name: Siemens 6ES7131-4BB01-0AB0 Digital Input Electronic Module
Brand: Siemens
SKU: 22706
Availability: InStock
Rating: 5.0 (1 reviews)

Introduction

The Siemens 6ES7131-4BB01-0AB0 Digital Input Electronic Module is designed for digital signal acquisition in the SIMATIC ET 200S distributed I/O system. It allows a PLC to monitor binary signals from field devices and use those signals in machine sequencing, equipment monitoring, and industrial process control.

Featuring two 24 V DC digital inputs, this high-feature module provides configurable input delays of 0.1, 0.5, 3, or 15 ms. This flexibility helps users adapt input response characteristics to different control requirements. Diagnostic functions, individual green input status LEDs, and a red group-fault indicator also support system commissioning and maintenance.

The module occupies a compact 15 mm width and is installed with a compatible ET 200S terminal module. It supports suitable two-wire sensors and specified encoder supply diagnostic functions, making it useful in distributed automation assemblies where signal monitoring and fault identification are important.

When purchasing the 6ES7131-4BB01-0AB0 for maintenance or system expansion, verify the complete order number and the existing station configuration. This is particularly important when replacing a module with a similar-looking ET 200S variant, since input features and diagnostic capabilities may differ between catalog numbers.

Technical Specifications

Parameter	Specification
Brand	Siemens
Model	6ES7131-4BB01-0AB0
Product Type	Digital Input Electronic Module
Product Family	SIMATIC ET 200S
Module Designation	2DI DC 24V HF
Number of Digital Inputs	2
Rated Input Voltage	24 V DC
Signal 0 Input Voltage	−30 to +5 V
Signal 1 Input Voltage	+11 to +30 V
Typical Input Current at Signal 1	8 mA
Input Characteristic	IEC 61131 Type 1
Configurable Input Delay	0.1 / 0.5 / 3 / 15 ms
Two-Wire Sensor Support	Yes
Maximum Permissible Sensor Quiescent Current	1.5 mA
Diagnostic Functions	Yes
Short-Circuit Diagnostics	Configurable for specified encoder supply faults
Input Status Indicators	Green LED per channel
Group Fault Indicator	Red SF LED
Channel-to-Channel Isolation	No
Isolation from Backplane Bus	Yes
Typical Power Dissipation	0.4 W
Maximum Shielded Cable Length	1,000 m
Maximum Unshielded Cable Length	600 m
Module Width	15 mm
Dimensions (W × H × D)	15 × 81 × 52 mm
Dimensions (inches)	0.59 × 3.19 × 2.05 in
Weight (provided specification)	0.174 kg
Weight (provided specification, lb)	0.38 lb
Installation	Compatible SIMATIC ET 200S terminal module required

Note: The dimensions and weight follow the supplied product information. Published technical data for this module lists an approximate module weight of 35 g, so confirm the 0.174 kg figure if the exact component weight is important for shipping or inventory purposes.

Recommended Related Models

The following Siemens modules may be relevant when maintaining or expanding a SIMATIC ET 200S installation. Their functions and compatibility should be checked against the specific hardware configuration before ordering.

Model	Product Type	Typical Function
6ES7131-4BB01-0AB0	Digital Input Module	2-channel, 24 V DC high-feature input
6ES7131-4BB01-0AA0	Digital Input Module	2-channel, 24 V DC digital input
6ES7131-4BD01-0AA0	Digital Input Module	4-channel digital input
6ES7131-4BF00-0AA0	Digital Input Module	8-channel digital input
6ES7132-4BB01-0AB0	Digital Output Module	Digital output control
6ES7193-4CA50-0AA0	Terminal Module	ET 200S module connection and wiring

Popular Related Models

These additional Siemens automation products may be useful for projects involving distributed I/O, sensor signal acquisition, and PLC-controlled equipment.

Model	Product Category	Application
6ES7131-4BB01-0AB0	Digital Input Module	High-feature binary signal acquisition
6ES7132-4BB01-0AB0	Digital Output Module	Digital actuator control
6ES7134-4JB01-0AB0	Analog Input Module	Analog sensor signal acquisition
6ES7135-4GB01-0AB0	Analog Output Module	Analog control signal output
6ES7138-4CA01-0AA0	Power Module	ET 200S station power management
6ES7193-4CB20-0AA0	Terminal Module	Distributed I/O connection and wiring

Ordering recommendation: Confirm the exact Siemens part number, module condition, terminal module type, and required diagnostic features before purchasing the 6ES7131-4BB01-0AB0.

Applications

The Siemens 6ES7131-4BB01-0AB0 is a SIMATIC ET 200S digital input electronic module designed to acquire binary signals from industrial field devices and transmit their status to a higher-level PLC. Designated as a 2DI DC 24V HF module, it provides two digital input channels with configurable input delay and diagnostic capabilities.

Typical applications include:

Machine automation: Monitoring push buttons, limit switches, and proximity sensors.
Production lines: Detecting workpiece presence, machine positions, and operating states.
Industrial control systems: Collecting discrete signals for PLC-based control logic.
Equipment monitoring: Identifying input signal changes and supporting troubleshooting through diagnostic indicators.
Distributed I/O systems: Expanding digital input capacity in SIMATIC ET 200S installations.
Maintenance and replacement: Replacing an existing module with the same part number after checking the terminal module and system configuration.

The module is intended for standard 24 V DC digital signal acquisition. Its high-feature functionality makes it suitable for applications requiring configurable input response times and diagnostic support.

Advantages

Two digital input channels: Monitors two independent binary signals within a compact module.
24 V DC input compatibility: Supports common industrial digital sensors and switches.
Configurable input delay: Provides selectable input delays of 0.1, 0.5, 3, or 15 ms to suit different signal requirements.
Diagnostic capabilities: Supports diagnostic functions for identifying certain module and sensor-related faults.
Status indication: Individual green LEDs indicate the state of each digital input, while a red SF LED indicates group faults.
Short-circuit monitoring: Supports configurable diagnostic monitoring for specified encoder supply short-circuit conditions.
Electrical isolation: Isolates the digital input circuitry from the backplane bus.
Compact installation: The 15 mm module width helps reduce space requirements in ET 200S assemblies.
Modular system integration: Works with compatible ET 200S terminal modules and distributed I/O configurations.

Technical FAQs

Q1: What is the Siemens 6ES7131-4BB01-0AB0?

It is a SIMATIC ET 200S 2-channel digital input electronic module designed for 24 V DC signals. The HF designation refers to its high-feature functionality, including configurable input delays and diagnostics.

Q2: How many digital inputs are available?

The module provides two digital input channels for acquiring binary signals from compatible field devices.

Q3: What is the rated input voltage?

The rated input voltage is 24 V DC. The specified input voltage range for signal 0 is −30 to +5 V, while signal 1 is recognized within +11 to +30 V.

Q4: Can the input delay be configured?

Yes. The input delay can be parameterized to 0.1, 0.5, 3, or 15 ms, allowing the module's response to be adjusted for the application.

Q5: Which field devices can be connected?

Compatible devices include industrial switches, push buttons, and suitable proximity sensors. Two-wire sensors are supported when their electrical characteristics meet the module's requirements.

Q6: Does the module support diagnostics?

Yes. The module supports diagnostic functions and provides a red group-fault SF LED. The exact diagnostic behavior depends on the configured parameters and detected fault condition.

Q7: Does it have individual input status indicators?

Yes. Each digital input has a green status LED, helping technicians check input states during commissioning and maintenance.

Q8: Are the two digital input channels electrically isolated from each other?

No. The two input channels are not electrically isolated from one another. The input circuitry is electrically isolated from the backplane bus.

Q9: What cable lengths are supported?

The specified maximum cable length is 600 m for unshielded cables and 1,000 m for shielded cables. Actual installation performance depends on the wiring environment and applicable system requirements.

Q10: What should be checked before replacing this module?

Verify the complete part number, terminal module compatibility, field wiring, input-delay configuration, and diagnostic settings. Also confirm that the replacement suits the existing SIMATIC ET 200S station.

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