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Power Automation & Safety

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FAQ01877 of Power Supplies FAQ

FAQ No. FAQ01877

Primary Contents

Question

The output LED indicator is not lit and the output will not go ON.

Answer


Likely causeSolution
Even though the connected load's current is within the Power Supply's capacity during normal operation, the load's startup current is triggering the overload protection function.Use a Power Supply with an "inverted L drop" overload protection function or replace the Power Supply with one that is one step higher in capacity.
The connected load exceeds the Power Supply's ratings, so it is triggering the overload protection function.Select a different Power Supply with sufficient capacity to handle the load's current requirements.
The Power Supply's output is short-circuited.Locate the point where the output line is short-circuited and eliminate the short.

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