Cncst4060

[Doddy]

Okay, let's not do that again. :-)

[petesos]

I blew my multi meter a few weeks ago and am confident using one , but i also remember when i removed the cover of the black box VFD to take photos to post i un plugged it from the mains supply but there was a red neon light flashing on the BOB even though there was no power lead connected and even after 30 minutes it was still flashing so i am now asking myself in the name of safety should i just write to the company and say replace the box as there is an issue of a thousand pounds exchanging hands. your thoughts would be appreciated on this

[Doddy]

I think if that avenue is open, that would be an eminently sensible thing to do.

Explain the Error Code on the VFD and the shock experienced from touching the metalwork of the machine.

You could chase down the fault, replace bits, etc, but at the end of the day this is still the suppliers responsibility.

The red flashing neon (LED?) could be the BoB powering from the USB interface - if still connected to the computer. If so, I wouldn't worry too much and wouldn't pollute the conversation with the supplier with that bit of info.

[Doddy]

Entirely possible. My thoughts are varied but includes insulation breakdown or stray wire from phase pin on the connector to the spindle housing.

I'd pull it apart, but I wouldn't recommend others to try.

The next test was to be a continuity test between the phase outputs on the VFD, then upstream to the spindle harness then the pins on the spindle, as well as a visual check on the terminal wiring but, again, I wouldn't recommend this if a replacement is an option.

[petesos]

Entirely possible. My thoughts are varied but includes insulation breakdown or stray wire from phase pin on the connector to the spindle housing.

I'd pull it apart, but I wouldn't recommend others to try.

The next test was to be a continuity test between the phase outputs on the VFD, then upstream to the spindle harness then the pins on the spindle, as well as a visual check on the terminal wiring but, again, I wouldn't recommend this if a replacement is an option.

The Mrs will be using the machine a lot when i am at work and although its a temptation to let her carry on messing with it especially the 3 phase side
i think its best to shut it down and request another spindle be sent .
I truly thank you for all your help with this matter and i appreciate the input
Thank you
Thank you all
Pete

[Palletlad]

that's a "Nowforever A100 series" VFD just had a quick look but the one sight that mentions they had it was down. I have the D100 series. hope this helps (PS was still looking but apparently rare)

[petesos]

Got the new spindle come today at last , but as you can see from the photos the old spindle has 4 wires connecting it to the plug but the new one has only 3 so is the 4th wire and earth and it just a case of soldering No 1 wire to pole marked 1 and so on , am not sure on this bit , any ideas please.
And the new spindle is a 1.5 kw as the other was a 800w one so could i encounter any problems using the more powerful 1.5 kw spindle

[Doddy]

Okay, those two images are the old and the new spindle?... okay, can see the 800W and the new 1.5kW - makes sense.

The bit that's confused me is that these are 400Hz motors, and the image from the VFD that you provided on the first page of this thread shows that the VFD is rated from 0~300Hz. And the best I can tell from a close-match on the part-number to the NowForever A100 manual (pdf randomly found online) - that's likely rated at around 750W.

So... I have to ask... who's provided the replacement spindle - was this the original machine vendor?, your last post or so was talking about going back to supplier for a replacement machine?, spindle? If so, did they just supply the 1.5kW spindle?

[petesos]

Understood Doddy
What surprises me as you have so rightly pointed out the capacity of this VFD is rated at 300Hz yet the spindle that came with the machine is rated at 400Hz.
Why would the company send a boxed machine ( brand new ) with a vfd that is not even rated to handle the spindle they put in the box .

So i must ask what sort of price is a VFD box that would handle this 1.5 spindal

[petesos]

Hi Doddy
Yes i asked the supplier of the cnc to replace the spindle and he told me to go ahead and order one and he will pay for it so that is what i did , i sourced a spindle and sent him the specs on it and he said thats ok go ahead and buy it and i will refund you the cost of the spindle and this he has done