Thread: Huanyang VFD Wiring

1.5mm wiring should be fine for 10A applications.

RE: Note, that I will not be using the full power of the spindle (24,000 rpm/400hz), mostly around 12,000 rpm.
Because HP ~= Torque x RPM , HP output depends as much on the torque characteristics of the motor as is does on the rpm.
If the motor can deliver more than twice the torque at 12000 rpm than 24000 rpm it will output more HP at 12000 than 24000 rpm.

On standard 50/60Hz motors the max power available is usually around 50-60Hz, above those frequencies the torque drops faster than the rpm rises so power drops off.

Thx BobL

So I could plug VFD directly into a standard 10amp household circuit (using 1.5mm wiring) without any problems?

Originally Posted by pootaholic

Thx BobL

So I could plug VFD directly into a standard 10amp household circuit (using 1.5mm wiring) without any problems?

If you program the acceleration to a medium ramp time eg >3s and set the current limit on the VFD to 10A yep no problem.

I have a similar spindle on my 6040, and at full noise (24,000 RPM) running a router bit fairly hard, I've never seen the current displayed on the drive get above about 3 Amps.

Originally Posted by RustyArc

I have a similar spindle on my 6040, and at full noise (24,000 RPM) running a router bit fairly hard, I've never seen the current displayed on the drive get above about 3 Amps.

I agree, for normal ops that's about what I'd expect .
The power draw by the motor depends on a bunch of stuff like bit size, feed speed and wood hardness. A large (eg 75mm) bit fed too fast, especially at slower speeds can result in the motor easily trying to draw excess current, but a well programmed VFD should prevent this happening and just shut it down.

BTW the drive display currents are usually for a single phase so 3A *sqrt(3) ~ 5A is closer to the total draw.

Originally Posted by BobL

BTW the drive display currents are usually for a single phase so 3A *sqrt(3) ~ 5A is closer to the total draw.

My "Nowforever" (there's a name that's designed to inspire confidence...) drive can display both supply and phase current, and from memory that ~3A was on the supply side. It also doesn't vary much when it starts to cut.

RustyArc,
Do you have any photos of your setup?
Cheers

Originally Posted by Lappa

RustyArc,
Do you have any photos of your setup?

I can take some pics - depends which aspect you're interested in?

Just some general snaps - front, sides, overhead(if possible). A general description of the computer system would be good too - parallel port or USB port, software etc. Its nice to know what others are using and how they find it.
Cheers