The B&R X20SI4100 is a safety I/O unit belonging to the X20 series from B&R Automation . It’s a plug-in module that provides four digital inputs and four digital outputs.

Here’s a breakdown of the X20SI4100′s key features:

• Digital Inputs: Four safety-rated digital inputs (24 VDC sink)
• Digital Outputs: Four pulse outputs (100mA)
• Supply Voltage: 24 VDC
• Input Filter: Software configurable input filter for each channel

Overall, the X20SI4100 is designed for applications requiring safe digital input acquisition. Its safety features make it suitable for use in safety-critical control systems.

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