Hello

I have a Carving CNC X6-1500GT that has the Nowforever E/A100 VFD connected to a 1,5KW 400Hz 24000RPM spindle.
Nothing out of the ordinary here, and it has been working rally good for quite som time.

But I got some error that didn't make the VFD boot up so to speak.
It showed some wierd errors on the display, and the relays refused to click on.
Probably something in the self test that isn't as it should be.

I got a hold of a proper ABB 1,5KW ACS550 VFD, that is suppsed to handle the frequency without a problem.
The thing is that I set up everything correctly, ramps and frequencys ....the works.
And it justs make a shudder and goes into over current directly.
Tried many different settings, none are working.
We tried with one phase and 3 phases, no change

I tried an old 3 phase ABB VFD, and with that one it worked just fine.
But it's 3 phases and not enough frequency.
But that confirmes that the Spindle is fine.

So it's probably something not compatible in the drive, because it works fine with a 50Hz motor.

If anybody has any ideas of either VFD I am all ears.

Or I thought about bying a brand new VFD, but what brand?
I think that Nowforever is out of the question, I'm really convinced that the huyanyang ones are that good either.
Hitachi maybe?

All suggestions are welcome.

Best regards
Patrik