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How do I correctly wire the digital inputs on the iSMA CONTROLLI SFAR-1M-4DI-M Modbus I-O Module?

1Answers
SophiaFitz
12/17/2025, 11:13:54 AM

Wiring the digital inputs of your iSMA CONTROLLI SFAR-1M-4DI-M Modbus I-O Module requires careful attention to ensure both functionality and safety. Here’s a step-by-step guide:

  1. Safety First: Before you begin, always disconnect the power supply to the module to prevent electrical shock. Avoid contact with any energized components during the wiring process.
  2. Input Signal Specifications: The SFAR-1M-4DI-M module's digital inputs are designed to accept:
    • Logical "0" signals: 0-3 V
    • Logical "1" signals: 6-38 V
  3. Wire Specifications and Connection: Use wires with a maximum size of 2.5 mm2 for all connections to the terminal blocks. Ensure that the wires are firmly and securely tightened into the terminal blocks to avoid loose connections, which can lead to malfunctions or even fire hazards.
  4. Important Considerations:
    • Review the iSMA CONTROLLI SFAR-1M-4DI-M manual before starting. Incorrect wiring can damage the module and potentially pose safety risks.
    • Operate the module within its specified temperature, humidity, and voltage ranges to guarantee proper function and avoid any operational failures.
    • Do not disassemble the module. Disassembly can expose you to electrical hazards and might void any warranties.

Following these guidelines will help you safely and effectively wire your iSMA CONTROLLI SFAR-1M-4DI-M Modbus I-O Module. For any further assistance or specific queries, please consult the official iSMA CONTROLLI documentation or reach out to their support team.

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