Originally Posted by
richmmm
""For information, before that happened, if i start the spindle to 6000rpm for exemple it make more that 10 seconds to arrive to this speed, also when stop the spindle from 6k rpm it make more than 10 seconds to brake. After restarting the machine the problem gone happened.""
I still suspect the PSU. I have seen a machine where the soft start was not working, the spindle would run at lo speed jog, but when commanded to hi speed the PSU could not supply the required current and the voltage dropped below the undervolt threshold on the VFS5 (about 190V)
Rich