Nidec Leroy-Somer R180

Questions and Answers

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Ashley GarciaAug 3, 2025
How to fix Nidec Leroy-Somer R180 no voltage build-up?
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  David ParkAug 3, 2025
  If your Nidec Controller isn't building up voltage, several factors could be the cause. First, check the fuse links and replace them if they're blown. Second, ensure the alternator is running at the correct RPM. If the issue continues, disconnect the AVR and briefly connect a 24 VDC battery between terminals F1 and F2 to increase residual voltage, then reconnect the AVR. Also, verify that the wiring complies with the wiring diagram and repair any discrepancies. Finally, the voltmeter or the AVR itself could be defective, requiring replacement.
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Kathleen RichardsAug 7, 2025
Why is my Nidec Leroy-Somer R180 Controller regulation incorrect?
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  Helen MartinezAug 7, 2025
  Incorrect regulation in your Nidec Controller can stem from several causes. The prime mover RPM might be falling, so ensure it is properly set. A highly distorted non-linear load could be the issue; try reducing it. If the alternator is running on very low power factor (P.F.), P.F. correction may be needed. An unbalanced load can also cause this, so redistribute the load equally over all three phases. Other potential causes include a faulty AVR (replace if necessary), failed rotating diodes (replace them), or a droop connection (remove if not needed).
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Kerry Martinez DDSAug 12, 2025
What to do if Nidec Leroy-Somer R180 Controller voltage is too high?
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  John WilsonAug 12, 2025
  If the voltage of your Nidec Controller is too high, it could be due to an incorrect voltage setting; set the voltage to the required value. Alternatively, the AVR might be faulty, in which case you should replace it.
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jonesjohnAug 18, 2025
How to stabilize unstable voltage on Nidec Leroy-Somer R180?
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  Heather RoyAug 18, 2025
  Unstable voltage in your Nidec Controller can be caused by incorrect wiring. Check and repair the wiring, ensuring all contacts are tightly screwed in. Also, the stability setting might be incorrect; try adjusting the stability potentiometer.
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Dana SpencerAug 23, 2025
Why is the voltage low on my Nidec Controller?
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  Ashley RomeroAug 23, 2025
  Low voltage on your Nidec Controller can be attributed to a few reasons. Check if the external potentiometer link is open and connect the link or potentiometer as needed. Verify that there isn't a loss of sensing voltage and connect it as per the diagram. Also, ensure that the prime mover RPM is correctly set, as a fall in RPM can cause low voltage.
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Jimmy DorseyAug 27, 2025
What causes erratic voltage behavior in Nidec Controller?
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  Eric MeltonAug 28, 2025
  Erratic voltage behavior in your Nidec Controller can be due to incorrect wiring. Check and repair the wiring, making sure all contacts are securely screwed in. Another cause could be incorrect circuit board settings; ensure they are set as per the instructions in the manual.