[traxxtito]

hi all
i need your help for my yaskawa servo driver problems .
frist of the problem when the boy made wrong wire connection , he gives one one of the sensors on the machine 3 phases (380V) and powering on machine ... it had to boom and the main power shut down .
we found many corrupted resistors and relays in the operator board and main control board ... we change it .
some changing happened in solve problem direction .
but now i have no move for all axis and if i try it i get alarm ( over servo lag )
and i have signal in all servo drivers screen ... it means ( difference between the motor speed and reference speed is below preset value )
pls. can you tell me what's possible was happend when the sensor was take 380v
and now what i can solve it .

its urgent pls.

[Al_The_Man]

There is obviously something still blown on the board the sensor was connected to, could be a power supply or burnt traces, almost immposible to diagnose this kind of problem from a distance.
Al.

[traxxtito]

hi al.
thanks for your reply .
so , you mean we must check the all board in machine or servo driver board ?
and if you know any thing about this problem and it solve pls. tell me how i can ?
and if i can get technical support from yaskawa in egypt ... r u know it ?
pls. following with me