Just blown up my inverter

**Lodds** · 29-12-2017

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** · 29-12-2017

Originally Posted by 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

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** · 30-12-2017

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...

**EddyCurrent** · 30-12-2017

Boyan, I have to disagree to an extent.
If the facility to display RPM is there and it's easy to achieve then why not use it ? I use the RPM display every time on my machine.
Most inverter related problems on the forum are due to untrained people trying to use them.

**cropwell** · 30-12-2017

A lot of problems on the forum are RTFM.

**Boyan Silyavski** · 31-12-2017

Originally Posted by cropwell

A lot of problems on the forum are RTFM.

Do you know how bad is to be a perfectionist and not understand anything from VFD manual?

I remember first time reading VFD manual , something like 300 pages. My brain burned trying to understand what they are talking about and especially not to make a costly mistake and some magic smoke.

**cropwell** · 31-12-2017

Originally Posted by Boyan Silyavski

Do you know how bad is to be a perfectionist and not understand anything from VFD manual?

I wouldn't know that, I am not a perfectionist. If you want to know how it is to not understand anything from a manual try Macro Level CICS from IBM.

**Nr1madman** · 31-12-2017

Originally Posted by Boyan Silyavski

... My brain burned trying to understand...

Hahaha!
I know what you are talking about!
This is a constant for me when reading chinglish ;)

Skickat från min SM-G955F via Tapatalk

**Lodds** · 01-01-2018

Originally Posted by Clive S

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

**Clive S** · 01-01-2018

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.

Ok fitting a pot is very simple See this post #1 http://www.mycncuk.com/threads/7388-...hlight=fitting

Re the speed fixed to 12K what hz does it show as you might not have the motor poles set right it is either two or four I think it is pd143 set it to two

also as Eddy has pointed out pd14 ad pd15 need to be set to about 5 seconds