Originally Posted by
mactec54
Sorry, I would start at 20Hz with your motor, and see what the amps are on the VFD drive screen, whatever that is times that by 3 that will give you the amps it is drawing you don't want that to be greater than the FLA of the motor so if you see 2amps that will be ok, you can try setting the Hz lower once you have checked it, heating will be a problem as the fan won't be cooling the motor at the lower speeds, I don't think you should go any lower than 12Hz to 14Hz without adding a cooling fan
The Auto tuning can be a problem on any of these drives, the high-cost quality VFD Drive have this working, so not all are created equal, normally the GT works ok up to 300Hz in the vector mode