Help with broken/ smoking HY02D223B VFD on Openbuilds platemaker

[Smiffy]

Hello

My HY02D223B has also just toasted itself. Before I replace it, does anybody know what the coil resistances should be on a chinese 2.2Kw watercooled spindle?

Mine all measure around 1.8ohms, does this sound about right?

Cheers

Smiffy

[Clive S]

Hello

My HY02D223B has also just toasted itself. Before I replace it, does anybody know what the coil resistances should be on a chinese 2.2Kw watercooled spindle?

Mine all measure around 1.8ohms, does this sound about right?

Cheers

Smiffy

Yes. Measure between all 3 phases and check that there is no short to the case.

They usually blow up if the plug comes loose or a short in the plug this is why you should always fix the cable to the Z axis to save it from bending near the plug

[Smiffy]

Thank you Clive, Yes all three the same and no short to earth. I'll megger it tomorrow. Cabling installed by builder isn't great, so will redo that now regardless.