[freemanxxx]

Hello,

We have a moriseiki sl-2 ,fanuc 10t controller, dc velocity servo unit

Does anyone meet this error beforeX Axis : SV 011 LSI overflow error while machine ready and x axis move rapidly then stop with this alarm (there is no alarm on servo unit)

I checked all forum also 10t maintenance manual, i did and recheck what they said and check all parameter 1816. 1820 . 1825-----1830 and others servo spec,

But there is no wrong parameter or anything, i change servo velocity unit with another working one, but problem same , i swapped x and z axis servo motor include pulsecoder , problem still same

I find 40 Pin ICs for LSI (on masterboard) and changed but problem still same, checked and clean carbon brush but their condition is good

Only one thing; servo velocity unit is ready when change motor cable or CV1 to CV2 on masterboard , or CF1 to CF2 on masterboard,

only one configuration as above effect it to ready condition of servo unit,

If we try to move any axis manually 2 axis move rapidly and stop then appears excess error , if no action for move machine is waiting for ready condition

Which kind of problem could be , is this from masterboard? ,

Anyone help or any idea

Regards

[GTMondock]

Had this happen twice on 2 different machines. Replaced both power and feedback cables for axis and problem solved. Can't guarantee this is your problem but it was mine. If its jumping around I would say its your feedback cable.

[underthetire]

Sounds like a broken tach wire.

[freemanxxx]

Sounds like a broken tach wire.

Gtmondock, underthetire
Thank you so much, After check it, i Will post result

[freemanxxx]

Gtmondock, underthetire
Thank you so much, After check it, i Will post result

Hello again

For this problem we checked all cable but their condition is good

So last thing is masterboard because pulsecoder and velocity unit connect to CV1-CV2/CF1, CF2

Is this problem happen from masterboard ?

Spec NO is A16B-1010-0040