First steel diy CNC router build

[Jonathan]

The VFD is evidently faulty - I hope you can get it replaced. As has been mentioned, you don't need a braking resistor. The reason for that option is if the motor needs to stop a load with a large inertia, or stop very quickly, the energy transferred to the capacitors in the VFD can be too much which causes the voltage to rise too high. A resistor is used to dissipate some of the energy and keep the voltage within safe limits for the IGBTs. In our case the spindle rotor inertia is low, so this would only be useful if you want to stop it particularly promptly - e.g. in less than 1 second.

Put neutral to "T" and it will work.

Nope - which two terminals you choose out of R,S,T makes no difference as they're just the connections to a 3-phase rectifier, so are equivalent.

[JAZZCNC]

Nope - which two terminals you choose out of R,S,T makes no difference as they're just the connections to a 3-phase rectifier, so are equivalent.

Ah but that's where your wrong Numb nuts because I've had several know and infact just fitted 1.5Kw VFD that "S" hasn't been connected so only "T" would work and given this VFD didn't work with "S" then it could have been couldn't it.!!

[Neale]

Ah but that's where your wrong Numb nuts because I've had several know and infact just fitted 1.5Kw VFD that "S" hasn't been connected so only "T" would work and given this VFD didn't work with "S" then it could have been couldn't it.!!

Like Jonathan, I thought that the Huanyang VFDs were wired to support single- or three-phase operation as that's how they are described in the manual. I just picked two terminals on mine and it works fine. But if they've changed this, or some of the current crop of Chinese VFDs don't match the usual Huanyang spec, or some are just not wired internally in accordance with the manual, then that's well worth knowing.

[JAZZCNC]

Like Jonathan, I thought that the Huanyang VFDs were wired to support single- or three-phase operation as that's how they are described in the manual. I just picked two terminals on mine and it works fine. But if they've changed this, or some of the current crop of Chinese VFDs don't match the usual Huanyang spec, or some are just not wired internally in accordance with the manual, then that's well worth knowing.

I've fitted 2 inside 5wks 1 x 1.5kw & 1 x 2.2Kw that have been like this and previous to these I've had possibly 3 others same. All but one came from Chai and I didn't ask for single phase only so don't know why.? Maybe they do both and when short of dual and knowing coming to UK provide single phase.? . . . . Can tell you the First one gave me that "Oh NO" sinking feeling.!.

[ivars211]

Hi again, been delayed lately, more or less everything works OK now. Question is, how do you get X-axis right angled in respect to Y? I cannot figure out the most precise method of doing it, any suggestions?

And also, I cannot find anywhere if it's possible to connect breakout board output signal to FVD, so that FVD starts when output signal from breakout board is HIGH...