Siemens 6ES7221-1BF21-0XA0 Input Module

Product manual:

Siemens 6ES7221-1BF21-0XA0 is a digital input module from the SIMATIC S7-200 series, designed to expand the digital input capabilities of programmable logic controllers (PLCs). This module can receive switch signals from external devices such as buttons, switches, and sensors, providing more input channels for the PLC.
Main technical specifications:
Product model: 6ES7221-1BF21-0XA0
Module type: Digital input module
Input channel:
8 digital inputs for receiving 24V DC digital signals.
Input voltage:
24V DC: Standard industrial signal voltage, suitable for processing switch signals from sensors and switches.
Input delay:
The input delay time is 3-4 milliseconds, which can quickly respond to changes in external input signals.
Electrical isolation:
There is electrical isolation between the input channel and the PLC system to ensure that the signal transmission process is not affected by electromagnetic interference.
Installation method:
DIN rail installation, easy to install and use in standard industrial control cabinets.
Size:
Width: 71.2 mm
Height: 80 mm
Depth: 62 mm
Main features:
Expand 8-channel digital input:
Provide 8 24V DC input channels for easy acquisition of signals from external devices such as sensors and switches.
Quick response:
An input delay time of 3-4 milliseconds is suitable for time sensitive industrial control applications, ensuring that signals can be processed quickly.
Electrical isolation:
Electrical isolation design enhances signal stability and system reliability, preventing mutual interference between signals.
Modular design:
Small module size, compact design, easy to expand in existing systems, and convenient for multi module combination use.
Suitable for harsh environments:
The working temperature range is from 0 ° C to 55 ° C, suitable for the harsh environment of industrial sites.

Product details picture:

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