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IndustryArena Forum > CNC Electronics > Spindles / VFD > Chinese 2.2kw spindle burned out?
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  1. #1
    Join Date
    Nov 2003
    Posts
    452

    Re: Chinese 2.2kw spindle burned out?

    The drive doesn't fault without load, and the drive outputs on UVW without the motor 150 volts, on each pole to ground. According to my electrician cousin who did the reading the VFD needs to put out 220v otherwise too many amps will pass into the motor.

  2. #2
    Join Date
    Jan 2005
    Posts
    15362

    Re: Chinese 2.2kw spindle burned out?

    Quote Originally Posted by justCNCit View Post
    The drive doesn't fault without load, and the drive outputs on UVW without the motor 150 volts, on each pole to ground. According to my electrician cousin who did the reading the VFD needs to put out 220v otherwise too many amps will pass into the motor.
    Correct this is why I asked for you to check it

    Ok that is a good start did he check the Dc bus voltage this is how to do it, open link this will help you under stand how to do it, if you have a low output which is to low at 150v it could be the input supply is not able to supply enough for the DC Bus Voltage to be correct

    It should read 310v to 339v to be correct this is what affects the output voltage

    Troubleshooting VFD Problems – How to Measure DC Bus Voltage and DC Ripple – Voltage Disturbance
    Mactec54

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