Cause : Motor Overload comes when motor Thermal Percentage (P1.22) is larger than 75 % and the current magnitude is larger than the motor rated value.
The "Motor Overload" A0 alarm in a Commander S100 drive typically indicates that the motor connected to the drive is drawing more current than the drive's rated capacity or than what it's programmed to allow.
This can be due to several reasons:
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Overloaded Motor: The motor might be experiencing a mechanical issue, causing it to draw more current than normal. This could be due to a mechanical obstruction, misalignment, or worn-out bearings, among other things.
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Incorrect Parameter Settings: Check if the drive parameters are set correctly for the motor being used. Incorrect settings, such as incorrect current limits or acceleration/deceleration settings, can cause the motor to draw excessive current.
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Overvoltage/Undervoltage: Fluctuations in the supply voltage can cause the motor to draw more current than usual. Ensure that the input voltage to the drive is within the specified range.
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Overheating: If the motor or the drive itself is overheating, it may result in increased current draw. Check for proper ventilation and cooling of both the motor and the drive.
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Mechanical Load: If the motor is subjected to a heavier load than it's designed for, it may draw more current. Check the mechanical load on the motor and make sure it's within the rated capacity.
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Faulty Components: There could be faulty components within the drive itself, such as damaged power transistors or capacitors, which could cause excessive current draw.