Huanyang VFD and spindle problem

[BriceO]

Thanks for your reply :)

Is there a way to check that the problem is the VFD and not the motor. If I order a new one I would like to be sure that this is the VFD the problem.
Do you had a lot of Huanyang VFD? Are they good in general? Thanks for your help.

[JAZZCNC]

Thanks for your reply :)

Is there a way to check that the problem is the VFD and not the motor. If I order a new one I would like to be sure that this is the VFD the problem.
Do you had a lot of Huanyang VFD? Are they good in general? Thanks for your help.

Very much doubt it's the Spindle they are simple devices. About only useful test you can do is continuity test and check windings haven't shorted to body.

The VFD's are ok for the money and do the job when working but wouldn't say they are Good quality. If you can't return and nothing inside is obviously damaged so can be repaired then much better replacing with higher quality unit.

[BriceO]

Thanks, so the spindle should be ok.

I really doubt that I can return it as the seller doesn't reply my messages. But I just checked the VFD and found a transistor exploded.



This is the model number: kdg15n120h ( documentation)
What do you think ? Is there a chance to save the VFD by replacing this transistor?

Thanks for your help.

[cropwell]

You could try replacing the bit, they are cheap enough ($25 for 10 from China), but don't be surprised if the damage goes back a little deeper than that one component. For the cost of the bits, it is worth a punt. Check your circuit board tracks haven't been fried as well !

[Doddy]

Of course you've blown it up at exactly the wrong time - about the start of the Chinese new year and the black-hole of all internet orders. I can't see a UK supplier but it might be worth looking up an equivalent.

[JAZZCNC]

I can't see a UK supplier but it might be worth looking up an equivalent.

He's in Toblerone land so UK supplier won't do him much good anyway.! . . . . I'd have small wager this will come back to life with that part replaced and I'm sure there be supplier in Swizyland.!! . . . . If pays my Air fare and Lift pass I'll take him my spare and go boarding while at it. .

[Jonathan]

Post some part numbers for similar ones you can get locally and I will comment on if they are likely to be suitable. You should use the multi-meter on diode and resistance test to poke around for damaged parts. Does the VFD display an error with the IGBT now removed?