Just blown up my inverter

[Clive S]

No I never used an earth, the plug has 4 connectors and one of them is left empty (No 4)

My soldering is the best in the world and I'm wondering if there was a short in the plug on the spindle. I didn't see anything when I took it apart could that have caused the damage if it had shorted?

A good photo of the wiring and spindle plug would help, was the plug connected securely as a loose connection can be bad for the vfd.

I take it you meant (not the best) as a dry joint could also cause problems.

[magicniner]

Don't mess with it, return it as faulty!
A decent VFD will detect an incorrect load, be it short or one or more disconnected phase (some detect open circuit but not all) and simply refuse to drive it with an appropriate error code rather than emit Magic Smoke!.
You shouldn't be able to bugger a VFD even by shorting the output, it should detect current overload, shut down and give you a meaningful error.
It's a bad 'un, send it back and buy something decent!
Regards,
Nick

[Lodds]

was the plug connected securely as a loose connection can be bad for the vfd.

I take it you meant (not the best) as a dry joint could also cause problems.

To be honest I think it was a bit of both. I have placed an order for a new VFD and spindle, and have ordered 2 additional plugs so I can get the soldering right on my next attempt.

You guys are the best, thanks for all your help and not being judgemental. Merry Christmas to you all.

[Lodds]

Just wired up the new VFD and changed the programming as before.

When I press "Run|" the spindle turns for about 2sec then I get an E.ora message and the spindle stops, any ideas? Seems I have been here before.

[Clive S]

Just wired up the new VFD and changed the programming as before.

When I press "Run|" the spindle turns for about 2sec then I get an E.ora message and the spindle stops, any ideas? Seems I have been here before.

Are you using the same spindle? Have you rewired the Plug on the spindle. What parameters have you changed?

Which vfd did you get as there are a few types? Pictures would help.

[Lodds]

Hi Clive,
Thanks for the response.

I'm using the new spindle.

I have now got it working without error. I changed back some of the settings I had changed earlier. now it runs full pelt without error.

Just to to understand now how to display RPM and how to drop the speed?

Thanks
Tony

[Clive S]

Hi Clive,
Thanks for the response.

I'm using the new spindle.

I have now got it working without error. I changed back some of the settings I had changed earlier. now it runs full pelt without error.

Just to to understand now how to display RPM and how to drop the speed?

Thanks
Tony

Tony Just because it is running at full pelt does not mean it is correct! So I would go through the setting carefully to make sure they are correct. It is impossible to help with the parameters without knowing what you have set them to.

You don't want a repeat of what happened before

[Boyan Silyavski]

Forget about that spindle displaying RPM. Why would you need that?

You will need only to fine tune the input voltage and the voltage adjustment in the VFD , so your spindle to run correctly at 3000, 6000, 10000, 12000, 16000, 18000, 24000 rpm, Once you have done that more or less, as its always a compromise, then you are done. When all is controlled from software and runs well, why would you need spindle to display RPM?

I was like you at the start, but in reality it could be 3 years before you look at the VFD if all is running as expected...

[Lodds]

Tony Just because it is running at full pelt does not mean it is correct! So I would go through the setting carefully to make sure they are correct. It is impossible to help with the parameters without knowing what you have set them to.

You don't want a repeat of what happened before

Hi Clive

Thanks again. I set the parameters as before using the same document I posted here in a previous post. I had also been in contact with the supplier. I have viewed a number of different YouTube videos some I thought were conflicting information.

My current position is that I have the spindle up and running and fixed to 12000 RPM, seems this speed is okay for most cutters?

I now know how to change the speed by setting the Hz. I have seen that some of you have fitted a Pod. Think I'll steer away from that for the moment, else I know what my next post will be on here.

So long story short I now have it working.

I have to install some sort of cooling setup, pump ordered just got to wait for it to arrive. In the mean time I use it for ruining perfectly good pieces of timber.

Thanks for all your help.

Tony

[Lodds]

Oh Forgot, this is my kit

https://www.ebay.co.uk/itm/2-2KW-WAT...53.m2749.l2649

Tony