AutoTakeOff: engine starts but only with about 30% power

Hello,

I have a problem with automatic takeoff with the PX4, version 3.7.1.
If I run with the given 2 m/s, the engine starts but only with about 30% power.
This is of course not enough power and the plane can not take off. What is wrong?
In this link https://www.magentacloud.de/share/z-h5ny0y831 the log-file. At approx. 12% you see motor running but only with less power. Normally fullpower is approx. 30 A. I think the problem is a parameter in the configuration and not the hardware.
Thank for all tips.

Franz from Germany