Originally Posted by
cnckeith
ok.. are you using allin1dc? if so, does it have the 12 amp or 15 amp servo drive? (make a difference in tuning)
servo motor info is critical to proper tuning when reusing old servos. so please post that information. photos of motors and data plate are great.
how did you determine the base pid values currently being used?
many old pheonix routers came with SEM DC servos. If that is what your machine has then the base PID values shown in the report file are incorrect.
if you have a SEM 29 inlb servo with 12 amp Allin1dc servo drive then the base PID should be Kp=1 Ki=.00391, Kd=15 and limit= 32000 for each axis.
then you can run autotune again with these proper motor matching base PID values.
after that post a fresh report file and i'll offer advice on fine hand tuning of Ka and Accell.
Please post the g code program you are running as well. so i can see what the vectors look like.