Finished wiring up my new spindle and vfd.

Finished wiring up my new spindle and vfd.
Used a ratcheting crimper to make nice neat ends to screw into the terminals.
Checked all the connections with my multimeter to be sure that I got zero resistance or infinite resistance where I expected.
Spindle case is earthed nicely via the shielding connecting to the plug.

I fired everything up successfully and took it up to full speed, I made a quick video just to show off how quiet it is.

Then I attached the vfd to a little stand, basically it’s bolted to a heavy metal plate, which itself is screwed to a solid wood back board via spacers. The whole lot set to give the required air clearances around the vfd.

In position it looks great. I’m very pleased.
Now I just need to get myself the right size er20 collets, and a water pump setup for the cooling.

Shouldn’t “T” be connected too?

@Marcus_Wolschon no, this model is for 2 or 3 phase, in the case of a normal 2 phase supply you just connect to any two terminals. At least that was the instructions, and it does work fine so I’m going to work on the basis that the instructions were correct. :slight_smile:

But with 2 phase you still have 3 wires.
The third one going to your central earthing point (loop-free star configuration).
Doing the earthing properly solved a great deal of issues with heavy noise in my CNC.
Is there at least a filter between these 2 cables and the plug?

@Marcus_Wolschon the third earth wire is connected to the earth on the other side of the row of terminals. which is also where the spindle cable earth wire and shield is connected.
I’ve not tried it with the CNC running so I may yet experience issues with noise. But I guess then I’ll have to learn more about electronics… :slight_smile: