Any ideas what else could be checked? MCE only recommends upgrading to an F5 but I think there is still hope.
Is it being run in closed loop? LF30?
I would think a dragging brake would easily double the current your drawing.
Current was sitting at 64A on the drive (I couldn't verify what it was with a meter before it crapped out). Didn't get a chance to get voltage. Motor had no obvious issues with shorting/grounding. Contactors are good as well.
Current was at contract speed while being run on closed loop.
Brakes are good, they actually have too much lift if anything. Its an older machine but when opening brake manually she moves up without issues
Also try running on open loop and see if there is a change, a bad encoder can also cause this. What is the bus voltage?
And for the original issue, is that what the drive says? If it is, does a clamp meter agree?
We had a bunch at one time go bad so I started burning copies of the one that appeared to still be good.
Also try running on open loop and see if there is a change, a bad encoder can also cause this. What is the bus voltage?
Correct wasn’t single phasing when it ran the few times. This was my next step once I get it going again. If I recall my glance was around 700 at idle (mind you I’ve seen a few drives past few days so I may be wrong)
And for the original issue, is that what the drive says? If it is, does a clamp meter agree?
Hopefully I’ll find out tomorrow, I have some new chips to get it running to continue trouble shooting