Product Overview for the 6ES7131-4BD00-0AA0 Digital Input Module

The 6ES7131-4BD00-0AA0 is a SIMATIC DP electronic module for the ET 200S system. Firstly, this module provides 4 standard digital inputs at 24V DC. Specifically, it belongs to the 5 electronic modules series for distributed I/O applications. In addition, the 6ES7131-4BD00-0AA0 is sold in packaging units of 5 pieces. Consequently, this bulk packaging reduces ordering frequency and ensures consistent stock. Moreover, the module width is only 15 mm for high-density installations. Therefore, the 6ES7131-4BD00-0AA0 is ideal for space-constrained control cabinets.

Key Features and Benefits

Compact 15 mm Width Design

The 6ES7131-4BD00-0AA0 features an ultra-slim 15 mm width. Firstly, this compact size allows many modules on a single rack. In addition, the height is 81 mm and depth is 52 mm for standard fit. Consequently, the 6ES7131-4BD00-0AA0 maximizes I/O density in the ET 200S system. Therefore, you can accommodate more control points in less cabinet space.

Four Standard Digital Inputs

The 6ES7131-4BD00-0AA0 offers 4 digital input channels. Firstly, the rated input voltage is 24V DC for industrial compatibility. In addition, the signal "1" range is +15 to +30V for reliable detection. The signal "0" range is -30 to +5V for clear off-state identification. Moreover, the typical input current at 24V is 7 mA. Consequently, the 6ES7131-4BD00-0AA0 connects directly to standard industrial sensors and switches.

Integrated Encoder Supply

The 6ES7131-4BD00-0AA0 provides a built-in encoder power output. Firstly, the output voltage is min. L+ (-0.5V) under load. In addition, the rated output current is 500 mA for powering external devices. Specifically, the permissible range is 0 to 500 mA for flexibility. Therefore, the 6ES7131-4BD00-0AA0 can supply power to connected sensors without additional power modules.

2-Wire Sensor Compatibility

The 6ES7131-4BD00-0AA0 supports 2-wire sensors directly. Firstly, the maximum permissible quiescent current for 2-wire sensors is 1.5 mA. In addition, this compatibility simplifies wiring for proximity sensors and limit switches. Consequently, the 6ES7131-4BD00-0AA0 reduces installation time and component count. Therefore, this module is highly practical for field device integration.

Reverse Polarity Protection

The 6ES7131-4BD00-0AA0 includes reverse polarity protection on the supply voltage. Firstly, this feature prevents damage from accidental miswiring. In addition, it improves system reliability during maintenance activities. Consequently, the 6ES7131-4BD00-0AA0 withstands common installation errors. Therefore, module replacement is less frequent and system uptime improves.

Technical Specifications of the 6ES7131-4BD00-0AA0

General Specifications

• Manufacturer: Siemens.

• Product Line: SIMATIC DP, ET 200S.

• Part Number: 6ES7131-4BD00-0AA0.

• Product Type: 4 DI Standard Digital Input Module.

• Packaging Unit: 5 pieces per packaging unit.

• Width: 15 mm.

• Height: 81 mm.

• Depth: 52 mm.

• Weight (approx.): 35 g per module.

Supply Voltage Specifications

• Rated Value (DC): 24 V DC (from power module).

• Reverse Polarity Protection: Yes.

• Input Current (from backplane bus): 10 mA at 3.3 V DC maximum.

• Input Current (from L+): Dependent on encoder.

Encoder Supply Specifications

• Type of Output Voltage: Min. L+ (-0.5 V) under load.

• Rated Output Current: 500 mA.

• Permissible Range (lower limit): 0 mA.

• Permissible Range (upper limit): 500 mA.

Power Loss

• Power Loss (typical): 0.7 W.

Address Area Specifications

• Address Space with Packing: 4 bits.

• Address Space without Packing: 1 byte.

Digital Input Specifications

• Number of Digital Inputs: 4.

• Input Characteristic Curve: IEC 61131, Type 1.

• Rated Input Voltage (DC): 24 V.

• Signal "0" Voltage Range: -30 to +5V.

• Signal "1" Voltage Range: +15 to +30V.

• Input Current for Signal "1": 7 mA typical at 24V.

Input Delay Specifications

• Parameterizable: No.

• Delay "0" to "1" (min.): 2 ms (3 ms typical).

• Delay "0" to "1" (max.): 4.5 ms.

• Delay "1" to "0" (min.): 2 ms (3 ms typical).

• Delay "1" to "0" (max.): 4.5 ms.

Cable Length Specifications

• Shielded Cable (max.): 1,000 m.

• Unshielded Cable (max.): 600 m.

Encoder Compatibility

• 2-Wire Sensor Support: Yes.

• Permissible Quiescent Current (2-wire sensor, max.): 1.5 mA.

Diagnostics and Status Indication

• Diagnostic Functions: No.

• Status Indicator Digital Input: Green LED.

Potential Separation Specifications

• Between Channels: No.

• Between Channels and Backplane Bus: Yes.

• Permissible Potential Difference (different circuits): 75 V DC / 60 V AC.

• Isolation Test Voltage: 500 V DC.

Installation Guide for the 6ES7131-4BD00-0AA0

Follow these steps for a proper installation of the 6ES7131-4BD00-0AA0.

Step 1: System Configuration Planning

Firstly, verify that your ET 200S rack has an available slot. The 6ES7131-4BD00-0AA0 requires a power module on the left side. Then, calculate the total current consumption from the backplane bus. Consequently, ensure your power budget accommodates this module.

Step 2: Module Mounting

After that, insert the 6ES7131-4BD00-0AA0 into the ET 200S terminal module. Push firmly until the module clicks into place. The 15 mm width allows high-density mounting. Therefore, multiple modules can fit in a small area.

Step 3: Sensor Wiring

Then, connect your field sensors to the input terminals. For standard 3-wire sensors, connect the signal wire to the input channel. For 2-wire sensors, ensure the quiescent current is below 1.5 mA. Then, connect the encoder supply to power your sensors. Consequently, the 6ES7131-4BD00-0AA0 will read input states correctly.

Step 4: Addressing and Configuration

Furthermore, configure the address space in your PLC program. The 6ES7131-4BD00-0AA0 can use packing (4 bits) or non-packing (1 byte) addressing. Then, download your configuration to the ET 200S master.

Step 5: Testing and Verification

Finally, apply 24V DC power to the ET 200S rack. Observe the green status LEDs on the 6ES7131-4BD00-0AA0. Each input channel has an individual indicator. Then, test each sensor to verify proper signal detection.

Packaging List for the 6ES7131-4BD00-0AA0

• 6ES7131-4BD00-0AA0 digital input modules (5 pieces)

• Product documentation and installation guide (1 set)

Frequently Asked Questions (FAQs) About the 6ES7131-4BD00-0AA0

Q1: How many digital inputs does the 6ES7131-4BD00-0AA0 provide?

The 6ES7131-4BD00-0AA0 provides 4 standard digital inputs. Each input accepts 24V DC signals from industrial sensors or switches. Therefore, one module monitors up to 4 discrete field devices.

Q2: What is the width of the 6ES7131-4BD00-0AA0 module?

The 6ES7131-4BD00-0AA0 has a width of only 15 mm. This compact size allows high-density mounting in ET 200S racks. Consequently, you can install many I/O points in limited cabinet space.

Q3: Does the 6ES7131-4BD00-0AA0 support 2-wire sensors?

Yes, it does. The 6ES7131-4BD00-0AA0 supports 2-wire sensors directly. However, the maximum permissible quiescent current is 1.5 mA. Therefore, verify your 2-wire sensor specification before connection.

Q4: What is the maximum cable length for this input module?

The 6ES7131-4BD00-0AA0 supports shielded cable up to 1,000 meters. For unshielded cable, the maximum length is 600 meters. Therefore, this module is suitable for distributed I/O applications with long field wiring.

Q5: Does the 6ES7131-4BD00-0AA0 provide encoder supply power?

Yes, it does. The 6ES7131-4BD00-0AA0 provides a rated output current of 500 mA for encoder supply. The output voltage is min. L+ (-0.5V) under load. Consequently, you can power connected sensors directly from this module without an external power supply.