Thanks for the replies, LiamN!
Yes to even resistance across the possible pairs within the motor.
Ground functions as it should on the multimeter and isn’t shorted.
Motor spins free and smooth when not powered. Giving it a helping hand spin when powered on doesn’t even help it a little bit.
Previously the speeds were around 350 rpm before any adjustments outside those listed as required prior to startup on the paper insert that came with the spindle. I was confused by this, but figured I’d figure it out better once I started digging in a little deeper.
I have the HY02D223B VFD. It’s the 220v 2.2kw model sold on Amazon.
I have already performed the factory rest a few times. I’ve tried it both with full blown parameter changes as recommended by other posts in this community and also with just the parameters required to be changed on the paper included with the spindle. No luck at all.
Luckily, I was finally able to find the parts on Amazon. I was attempting to reorder what I did originally, which was the VFD and the spindle as separate items. Those are both out of stock, but the exact same spindle and VFD are available as a kit with a dinky water pump (I have a CW-3000 I’ll use). I ordered it and unfortunately it’s going to take about a week for shipping, but if I don’t hear back from my email to HY support, I’ll swap the parts and hope for the best. I’ll be able to handle returning defective parts through Amazon if HY doesn’t pipe up.