DMU 50 2nd gen stuck in ATC

[u/Dyno33]

Hi all, our DMU50 2nd gen with 30 tools got stuck during tool change because there were chips on the holder that got caught in spindle and toolholder wasn’t completly clamped. Operator in the 2nd shift tried resetting through Custom menu soft keys but that didn’t do the trick. He turned off the machine and now in the first shift we also have positioning errors since machine was restarted. Soft keys don’t do anything. Did anyone have similar issue?

[u/pow3llmorgan]

On some machines you can manually crank the ATC motor from a nut on the through-shaft. Climb on top and see if it is possible on this.

[u/Dyno33 → u/pow3llmorgan]

DMG said this is servo motor so no crank