Huanyang VFD and spindle problem

[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?

[BriceO]

Thanks for your answers!
@JAZZCNC maybe if you take some English ales with you ;)

I just begin to check the circuit. By now, tracks are surprisingly good, but there is some strange connections... I will continue to test the circuit.

I checked the part in china but you're right it will be difficult to replace it with the same model.
It would be awesome if you could advice me :)

A good shop in Switzerland is Distrelec. I've searched for some replacement parts (http://www.distrelec.ch/search?q=iGB...=4&pageSize=10) and I think about this one maybe: http://www.distrelec.ch/fr/igbt-to-2...=50&simi=97.47

Should I replace all IGBT or only the broken one ?

Thanks you, all for your help.

[Jonathan]

The IGBT you linked to is TO220 package, but the original is TO247 so you should look for that instead. Also the voltage rating (surprisingly) is 1200V, so I would get the same unless replacing all of them. I would replace both in the same 'leg' on the inverter - so 2 out of 6, unless more seem to be fried.

[BriceO]

Hi everyone,

Good news! After replacing two diodes, one resistance and two IGBT, the VFD works perfectly. I hope this will last...

Thanks for your help!! Very happy to see it work again!

[cartmaningi]

Hi

can anyone tell me what is written on the resistor that failed in my spindle. I need a replacement part and I do not know where to find this. For the 24V converter I found it online.

Tx