AC Input Signal Not Turning ON

Was bedeutet AC-INPUT-NO-ON ?

An AC input signal fails to turn on, typically caused by step-like deformations in the input signal waveform around the zero-cross voltage. This issue often arises from power supply quality problems, such as those associated with off-line type Uninterruptible Power Supplies (UPSs).

• Deformed input signal waveform around the zero-cross voltage, preventing proper detection by the AC input module.
• Use of an off-line type UPS or other power supply that generates insufficient or distorted AC waveforms.

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1. 1

   Improve the input signal waveform by using an on-line type UPS or other power conditioning device that provides a cleaner, stable AC waveform.