What is the English description of the 2020 alarm?
Is it the same as the attached file? " Coolant and Lub. Pump Overload"[/QUOTE]

The description you gave is nearly verbatim for a Doosan.

The 2020 alarm for the Daewoo Puma 240L reads... “Spindle not ready or safe to operate”
This was our first system produced alarm or indication of any kind that occurred in conjunction with the machine stopping in mid program.
It was also the first time it stopped during 1st shift.
The common element in every machine stop has been when the next command line requires the turret to travel in a Z+ direction just after X+ motion at the very end of that particular tool run.
The only unusual element of note, is it stopped today at tool 12 (Bar Puller)
Just as it unclamped and is meant to pull in a Z+ direction.

So I have witnessed it fail on every tool the program runs: 1, 3, 11 and 12.
All moment of failure is in a safe spot to stop, but at the moment Z+ motion is required of the turret.