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6ES7221-1BF32-0XB0 is a digital input module belonging to the SIMATIC S7-1200 series of Siemens. The following is a detailed description in English:
- Model and Series: With the model number 6ES7221-1BF32-0XB0, it is specifically the SM 1221 Digital Input module of the SIMATIC S7-1200 programmable logic controller series.
- Function and Application: It is used to expand the digital – input capabilities of the CPU, supplementing the built – in I/O of the CPU, which enables the controller to be flexibly adapted to relevant tasks. It can connect the controller to the digital signals in the process, converting the level of the external digital signals from the process into the internal signal level of the S7 – 1200 controller.
- Input Characteristics: It has 8 digital input channels, and the rated input voltage is 24V DC. The input type is sink/source, and the input characteristic conforms to IEC 61131, type 1. The allowable voltage range is 20.4 – 28.8V DC. Each input point consumes 4mA current, and the current consumed from the back – plane bus is 105mA at most, with a typical power loss of 1.5W.
- Mechanical and Protection Features: The enclosure material is plastic, and the protection level is IP20. Its dimensions are 45mm in width, 100mm in height, and 75mm in depth, and it weighs about 170g.
- Other Features: It requires a front – end connector, which is convenient for wiring and connection. And it complies with the RoHS directive, ensuring environmental protection and compliance in production.
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