Bkn=3.

Its definately losing the signal from the regulator card n.o. contact that goes to the bki input, and then stopping motion due to a 154 fault. I swapped reg cards. Disconnected the cap board in front of bkc. the rectifier fuses are good on the reg board. Im down to the igbt on the that works with the reg board. It will run for 3.96 seconds before faulting.