leitmotif
Member
Application is a lathe. The motor is 3 phase two speed ie 4 pole (1800 synch RPM) and 8 pole (900 RPM synch), rated approx 3 HP - have not seen and not sure HP rating applies to both windings. For sake of discussion and simplicity let us assume both windings are rated at same HP. This may be a bad assumption I know.
What I know is
It is possible and frequently done to run multiple motors on a single VFD that is sized to the total motor load. Overload protection must be provided to each motor.
The owner operator knows not to switch speeds unless motor is at a stop.
What I am not sure of is the effect on VFD from the "large" difference in current from the two speeds.
Dan Bentler
What I know is
It is possible and frequently done to run multiple motors on a single VFD that is sized to the total motor load. Overload protection must be provided to each motor.
The owner operator knows not to switch speeds unless motor is at a stop.
What I am not sure of is the effect on VFD from the "large" difference in current from the two speeds.
Dan Bentler