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Siemens – 6ES7 321-1BH50-0AA0 – Digital Input SM 321 – Programmable Logic Controller (PLC) Module

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The Siemens 6ES7 321-1BH50-0AA0 is a reliable digital input module designed for seamless integration into industrial automation systems, providing precise control and monitoring capabilities.

Number of Inputs:16

Input Type:Optically isolated, suitable for both DC 24V and AC 120-230V

Current Load:5A per channel

Operating Voltage:DC 24V

Environmental Conditions:Operating temperature range from -25°C to +60°C

Protection Class:IP20

Communication Interface:Integrated to Siemens S7-300 CPU

Connection Type:24-pin DIN rail mount connector

    This Siemens Digital Input Module is specifically designed for seamless integration into the robust Siemens S7-300 series PLCs, ensuring reliable operation in demanding industrial environments.

    With its 16 digital inputs, it provides a high density of connectivity for various sensors and switches, facilitating efficient data collection and processing.

    Equipped with 24 V DC supply capability and rated at 2.5 A current load, this module ensures sufficient power for a wide range of applications without the risk of overloading.

    The inclusion of a 20-pin connector ensures compatibility with other Siemens modules, enhancing system flexibility and expandability.

    The module’s design is not only compact but also durable, thanks to the conformal coating which protects against environmental hazards such as dust, moisture, and temperature fluctuations, ensuring reliability even under harsh conditions.

Siemens 6ES7 321-1BH50-0AA0 Digital input SM 321




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