I've got a Fadal VMC3016 and an older VMC4020. The 3016 supports rigid tapping, and it has a 1010-5E spindle control card, but it will remain down for an extended period of time due to mechanical issues. The 4020 has a Baldor vector drive with an encoder on the motor, but it has a 1010-1A spindle control card that doesn't support rigid tapping.
My understanding is that all I need on the 4020 to support rigid tapping would be a 1010-4 or later axis control card with rigid tapping EPROMs and the additional cable that goes from the vector drive to the card. Seeing as I have all that on the 3016, I tried swapping the 1010-5E spindle control card into the 4020.
The result: The machine starts up and appears to function. I can turn on the spindle. But in less than a minute of running with absolutely no load, the spindle overloads, triggering the emergency stop. Swapping the original 1010-1A card makes the problem go away.
Any thoughts?
Thanks,
Ryan