In the Monitoring Menu on ATV61 drive, “Otr” Motor Torque shows the value in “%”, How to know the value of the motor torque.
Knowing the nominal motor torque, it is possible know the value of the motor torque with the percentage given by the "Otr" Value [in the Monitoring Menu].
If "Otr" [in the Monitoring Menu] shows 50% it means that you have half torque than your nominal motor torque (as per the name plate of motor).
Note: Otr is just a value used for information. If you want to have a real value for torque, please use a torque meter.