Try increase the voltage reading on the SDS. This is the output voltage supply to the motor. I learned that the lower the voltage the smoother the motor runs (lower noise level). Therefore, VPI presets the SDS unit to a number much lower than what coming out of the wall outlet. Having said that, as an experiment, you can set the SDS output voltage lower/higher than the current setting if you want. If you set it too low, the motor wont turn so keep turning it up until you reach the point of optimization. ( For example, if you find the lowest point is 72 volts, you then would want to set the SDS at 75 volts to compensate for fluctuations within the motor).
In your case, try to increase the voltage setting by one increment at a time until the motor start to turn.
Good luck,
Thanks John
In your case, try to increase the voltage setting by one increment at a time until the motor start to turn.
Good luck,
Thanks John