Hello i'm posting a new thread here because i didnt't find info about a problem like mine.
I have a arrow 750
When pressing machine power on the y axis moved fast like crazy and i had the alarm excess following error.

I open the servo debug page and choose the y axis and the folowing error was always increasing when pressing machine power.
What i think and tested.
It could be the resolver cable!

I have another machine and replaced the motor wiring and it still with the same problem.
I change te motor wiring and resolver to the X axis and moved ok with C1, and option board plug from the x and c2( resolver) and motor cable from y.

After this i change the drives to see if the problem pass to the x but it still crazy on y, and passed also the crazyness to the x XD
Then i restored eveithing like it was and started to adjust the balance pot and the comand scale until i have zero motor rotation and also no following error.

Now after adjust that i can do machine power and the axes don't move but if i move the y te following error increase and the motor rotarion still at zero!

I have 6 more same reference drive, i change all them and still always like described before.

It looks like the driver is not telling the motor to work, but if i change the balance it start to rotate!
ALso sometimes when doing for the first time machine power i have the 39-6 alarm and no drive ready, i then remove and install again c1 plug at y drive and after this i could go tho the align fase everytime.

Anybody have a clue on this one? It's making my brain die!

My control is Acramatic 2100 and kollmorgen bds4 and psr4 drives( black)

Thanks everybody.