That's right, I'm sorry I wasn't thinking. The SB addressed a problem with the spindle shutting down in the middle of running.
It was an overheat problem with the VFD, but the heatsink gets installed between two voltage regulators on the control board not the VFD itself.
I have mine attached, it just isn't identical to what they pictured. I had to put the heatsink on the other side of the regulators. Won't know if it helped anything or not though because I never had the problem.
But this is not the same problem that EPM was asking about...
Dave |