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Stone Mountain, GA
|reply to whizkid3 |
Re: Variable speed drive
said by whizkid3:You missed the point, the VFD converts single-phase power to 3-phase. Actually it is a 3-phase PWM signal. Since it is generating the phases, frequency and PWM, it had a lot of control over the motor. said by shdesigns:
A new VFD and 3P motor will cost you about $300.
It could be a good idea, except that not too many people have 3-phase power to their residence.
My VFD, has ramp up/down, PWM frequency, current limits, braking and failsafe options.
Embedded Systems Consultant,
SHDesigns home - DIY Welder
said by shdesigns:Cool. How about a link?
You missed the point, the VFD converts single-phase power to 3-phase.
The Eaton/Cutler-Hammer NFX9000 series VFD offer single-phase input up to 2HP and the M-Max series offer single-phase input up to 3HP. Allen-Bradley, Square-D also offer small VFDs with single-phase input.
Link to relevant Eaton/CH catalog pdf: