z axis motor problem

LucasCarreno

I am trying to convert an old replicator 2 with a duet 2 wifi board, when configuring the firmware all the motors work fine except the z axis motor, it has an erratic behavior, it turns to both sides and sounds a lot, I already checked the polarity and also update the firmware to 3.04 but there is no way to fix it. Then I modified the velocities and accelerations and got the motor to move a little more uniformly, since I had read that this problem was due to the low speed in the z axis but now it throws me this problem "Warning: Driver 2 warning: phase A may be disconnected, phase B may be disconnected."
Your answer is probably to reverse the polarity and check the wiring, but the motor doesn't run when you reverse the polarity.
Which may be?

Phaedrux

https://forum.duet3d.com/topic/5909/guide-for-posting-requests-for-help

LucasCarreno

This is mi config file
config.g

Nightowl

This post is deleted!

Phaedrux

M566 X12000.00 Y12000.00 Z12000.00 E1200.00        ; set maximum instantaneous speed changes (mm/min)
M203 X12000.00 Y12000.00 Z12000.00 E1200.00        ; set maximum speeds (mm/min)
M201 X3000.00 Y3000.00 Z3000.00 E10000.00          ; set accelerations (mm/s^2)

These values are far too aggressive. Try these instead.

M566 X1000 Y1000 Z120 E1200        ; set maximum instantaneous speed changes (mm/min)
M203 X12000 Y12000 Z600 E3000        ; set maximum speeds (mm/min)
M201 X1000 Y1000 Z60 E3000          ; set accelerations (mm/s^2)