On ATV320 or ATV630, this parameter will be estimated  based on motor current measured.

The torque of motor is not measured by the drive. It is calculated from the measurement of motor
current.
OTR = (Iq / Iqn) * (PhirdRef / Phirn)
Iq : Current torque provide by the command to drive motor
PhirdRef : Flux provide by the command to drive motor
Iqn : Nominal Current torque compute with the motor name plate
Phirn : Nominal flux of the motor

Note - All values are in percentage

Released for: Schneider Electric India