Irregular Spindle Speed

[HipoPapi]

The spindle is dual voltage so can be run 220v or 380V. This is determined by how you connect the wire terminals on the spindle NOT the VFD.
So if your Spindle was lasted used on 380v Three phase supply then it will be wired in Star config. If used on 220V single or three phase supply it will wired Delta.
If your Supply is 220V Single phase then you need spindle config to be Delta.

Regards the wires then I cannot tell you from that picture. On the VFD they will be marked so thing like ACM & V1 or Gnd & V1 or Gnd & A1 depending on type of speed controller.
If your not sure what doing then suggest you don't go poking around because some speed controllers can be at Mains potential and very dangerous.
Sorry I'm too far away to help.

If you send better pics of spindle inside the cover I can probably tell you if Star or Delta. Like wise if send better pics of VFD or The board I can tell you which wires to measure from but if your not confident with electrickery then still suggest you seek advise or help from someone who is.

Thanks again Jazz,

Will wait for my colleague to come in later and will take some better pictures for you as I think that is the only workable route since you don't fancy a trip to London. We do have confidence and are quite good at taking anything apart though :)
We have already tried contacting all the companies that we could find in the UK but no luck so far as most don't work with mach3 or simply are not interested as the machine was not built by them. On the other hand the Chinese support proves to be quite difficult due to the 8 hours time difference and the even bigger language barrier. Basically we have been trying to sort this problem out with them for over a month now.

Thanks again and will try to post those pictures later.

BoX

[HipoPapi]

Hi There Jazz,

I had to take yesterday off but managed to take some better quality pictures today.

I have attached some and hope they are useful but if you need any specific pictures including screenshots from Mach3 please let me know as it seems will have to sort the problem our self's. All the Chinese support does is trying to push us to install nc studio instead of mach3 saying that the guy who built our machine and had mach3 experience has left their workplace.

Thanks again and have a good evening.

BoX

[JAZZCNC]

Ok well first need to know if your using Single phase 220V supply.?

If so then I'm quite confident that your problem is the new replacement spindle is designed ONLY for 380v.
The VFD while converts Single phase to Three phase it does not convert 220v to 380v.

The columbo Spindle was dual voltage, hence Delta or Star wiring options but the New replacement spindle, looking at the pic you posted doesn't and only works with 380v.

Confirm this and if using 380V then I'll continue and tell you which wires to check.

[Doddy]

Just a quicky for Jazz - I know where you're coming from with the plate on the spindle, but googling the part number throws up bugger all info on aliexpress, but it does suggest that it can be wired star or delta, and a 6-pin connector on the spindle brings out each winding separately, and that the coil voltage is 220/380.

OP - Might be worth posting a photo of the electrical connector on the spindle.

[JAZZCNC]

Just a quicky for Jazz - I know where you're coming from with the plate on the spindle, but googling the part number throws up bugger all info on aliexpress, but it does suggest that it can be wired star or delta, and a 6-pin connector on the spindle brings out each winding separately, and that the coil voltage is 220/380.

OP - Might be worth posting a photo of the electrical connector on the spindle.

IME if Spindles or motors can be wired both 220/380v the plate will state it. ie like the Coloumbo does. In this case can only go off what the plate says.
But it wouldn't hurt to have pic of the terminals for clarity.

Also if Ali express shows bugger all info how can it suggest Star -Delta.?

[Doddy]

Also if Ali express shows bugger all info how can it suggest Star -Delta.?

Various adverts give nothing like the amount of technical detail that I'd like, however, most, do clearly state the two voltage options, and a close-up of the 6 pin connector.

e.g.

http://www.chinaseniorsupplier.com/M...tificiate.html

[magicniner]

http://www.han-qi.com/products_detai...ductId=91.html

no data sheet so it could be available in both

[JAZZCNC]

They show 2 different PDF. One for the 220v another for 380V which suggests it's not dual voltage which is changable via usual methods. Also there is no Star Delta connection on the connector which also backs this up.

[Clive S]

I'm keeping out of this one on the grounds that I have had a drink