Siemens 6ES7321-1BH01-0AA0
Siemens 6ES7321-1BH01-0AA0
Siemens 6ES7321-1BH01-0AA0
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Siemens 6ES7321-1BH01-0AA0 SIMATIC S7-300 Digital Input Module

SKU 6ES7321-1BH01-0AA0

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  • 12-month warranty
  • Free returns within 30 days
  • Manufacturer: Siemens
  • Product No.: 6ES7321-1BH01-0AA0
  • Origin Germany
  • Product Type: Digital Input Module
  • Barcode: 8537101190
  • Payment: T/T, Western Union
  • Weight: 0.24 kg
  • Dimensions: 12.5 x 10.5 x 4.0 cm
  • Shipping port: Xiamen
  • Warranty: 12 months

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Digital Input Modules SIMATIC S7-300
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Product Description

Description

The Siemens 6ES7321-1BH01-0AA0 is a digital input module designed for the SIMATIC S7-300 PLC system. This module provides 16 optically isolated input channels for reliable signal acquisition from field devices operating at 24V DC. It is engineered to interface with sensors, switches, and other discrete signal sources in industrial automation environments. The module's optical isolation protects the PLC backplane from electrical disturbances and ground loops originating in field wiring, enhancing overall system stability and safety. Its compact, high-density design conserves valuable control cabinet space while a single 20-pin connector simplifies wiring and installation.

Features

  • 16 digital input channels
  • Rated input voltage of 24V DC
  • Optical isolation between field and logic circuits
  • Compatible with the Siemens SIMATIC S7-300 series
  • Single 20-pin front connector for simplified wiring

Applications

  • Manufacturing and assembly lines
  • Conveyor and material handling systems
  • Packaging and bottling machinery
  • Process control signal acquisition

Technical Specifications

Specification Value
Manufacturer Siemens
Model Number 6ES7321-1BH01-0AA0
Product Family SIMATIC S7-300
Module Type Digital Input Module
Number of Inputs 16
Input Voltage 24V DC
Isolation Optically Isolated
Connector Type 20-pin
Lifecycle Status Active
Country of Origin Germany
HS Code 8537101190
Shipping Weight 0.24 kg
Package Dimensions (Calculated) 12.5 x 10.5 x 4.0 cm

Installation Guidelines

CRITICAL WARNING: Hazardous voltages may be present. Installation must be performed by qualified personnel only. Failure to de-energize equipment before installation can result in severe injury or death. Always follow local Lockout/Tagout (LOTO) procedures.
  1. 1 De-energize the S7-300 rack and verify the absence of voltage using a calibrated multimeter. Apply appropriate LOTO devices.
  2. 2 Select an available slot on the S7-300 backplane. Align the module with the backplane bus connectors and press firmly until it is securely seated.
  3. 3 Secure the module to the DIN rail by tightening the integrated mounting screw located on the front of the module. Do not overtighten.
  4. 4 Prepare and terminate field wiring onto the 20-pin front connector according to the system wiring diagrams. Ensure proper wire gauge and ferrule usage.
  5. 5 Plug the front connector into the module, ensuring it is fully seated and secured by its locking mechanism.
  6. 6 After verifying all connections are correct and secure, remove LOTO devices and re-energize the system for commissioning.
Shipping & Returns

Global Express Shipping

  • Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our technical warranty.
FAQ
What PLC system is the 6ES7321-1BH01-0AA0 compatible with?
This module is designed for use with the Siemens SIMATIC S7-300 PLC system.
How many input channels does this module have?
The module features 16 digital input channels.
What is the rated input voltage for the channels?
The channels are rated for a 24V DC input voltage.
Are the inputs on this module isolated?
Yes, all 16 input channels are optically isolated from the PLC backplane to protect against electrical disturbances.
What type of connector is used for field wiring?
The module uses a single 20-pin front connector for all field wiring terminations.
Reviews

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Siemens 6ES7321-1BH01-0AA0 SIMATIC S7-300 Digital Input Module

Only 4 item(s) left in stock

  • Manufacturer: Siemens

  • Product No.: 6ES7321-1BH01-0AA0

  • Country of origin:Germany

  • Product Type: Digital Input Module

  • Barcode: 8537101190

  • Payment: T/T, Western Union

  • Weight: 240g

  • Dimensions: 12.5 x 10.5 x 4.0 cm

  • Shipping port: Xiamen

  • Warranty: 12 months

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Product Description
FAQ
Shipping Returns
Additional details
Reviews

Description

The Siemens 6ES7321-1BH01-0AA0 is a digital input module designed for the SIMATIC S7-300 PLC system. This module provides 16 optically isolated input channels for reliable signal acquisition from field devices operating at 24V DC. It is engineered to interface with sensors, switches, and other discrete signal sources in industrial automation environments. The module's optical isolation protects the PLC backplane from electrical disturbances and ground loops originating in field wiring, enhancing overall system stability and safety. Its compact, high-density design conserves valuable control cabinet space while a single 20-pin connector simplifies wiring and installation.

Features

  • 16 digital input channels
  • Rated input voltage of 24V DC
  • Optical isolation between field and logic circuits
  • Compatible with the Siemens SIMATIC S7-300 series
  • Single 20-pin front connector for simplified wiring

Applications

  • Manufacturing and assembly lines
  • Conveyor and material handling systems
  • Packaging and bottling machinery
  • Process control signal acquisition

Technical Specifications

Specification Value
Manufacturer Siemens
Model Number 6ES7321-1BH01-0AA0
Product Family SIMATIC S7-300
Module Type Digital Input Module
Number of Inputs 16
Input Voltage 24V DC
Isolation Optically Isolated
Connector Type 20-pin
Lifecycle Status Active
Country of Origin Germany
HS Code 8537101190
Shipping Weight 0.24 kg
Package Dimensions (Calculated) 12.5 x 10.5 x 4.0 cm

Installation Guidelines

CRITICAL WARNING: Hazardous voltages may be present. Installation must be performed by qualified personnel only. Failure to de-energize equipment before installation can result in severe injury or death. Always follow local Lockout/Tagout (LOTO) procedures.
  1. 1 De-energize the S7-300 rack and verify the absence of voltage using a calibrated multimeter. Apply appropriate LOTO devices.
  2. 2 Select an available slot on the S7-300 backplane. Align the module with the backplane bus connectors and press firmly until it is securely seated.
  3. 3 Secure the module to the DIN rail by tightening the integrated mounting screw located on the front of the module. Do not overtighten.
  4. 4 Prepare and terminate field wiring onto the 20-pin front connector according to the system wiring diagrams. Ensure proper wire gauge and ferrule usage.
  5. 5 Plug the front connector into the module, ensuring it is fully seated and secured by its locking mechanism.
  6. 6 After verifying all connections are correct and secure, remove LOTO devices and re-energize the system for commissioning.

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Key Features:
#Digital Input Modules #SIMATIC S7-300

What PLC system is the 6ES7321-1BH01-0AA0 compatible with?
This module is designed for use with the Siemens SIMATIC S7-300 PLC system.

How many input channels does this module have?
The module features 16 digital input channels.

What is the rated input voltage for the channels?
The channels are rated for a 24V DC input voltage.

Are the inputs on this module isolated?
Yes, all 16 input channels are optically isolated from the PLC backplane to protect against electrical disturbances.

What type of connector is used for field wiring?
The module uses a single 20-pin front connector for all field wiring terminations.

Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin
Germany

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