SPRUHJ1I January 2013 – October 2021 TMS320F2802-Q1 , TMS320F28026-Q1 , TMS320F28026F , TMS320F28027-Q1 , TMS320F28027F , TMS320F28027F-Q1 , TMS320F28052-Q1 , TMS320F28052F , TMS320F28052F-Q1 , TMS320F28052M , TMS320F28052M-Q1 , TMS320F28054-Q1 , TMS320F28054F , TMS320F28054F-Q1 , TMS320F28054M , TMS320F28054M-Q1 , TMS320F2806-Q1 , TMS320F28062-Q1 , TMS320F28062F , TMS320F28062F-Q1 , TMS320F28068F , TMS320F28068M , TMS320F28069-Q1 , TMS320F28069F , TMS320F28069F-Q1 , TMS320F28069M , TMS320F28069M-Q1
This error indicates that the estimated inertia value is incorrect. This is commonly caused by motors that have a large friction or a high cogging force. To correct for this error, decrease the RampTime_sec parameter in the configuration section of the global structure. Decreasing this parameter will increase the rate at which torque is applied to the motor during the inertia identification process.
If the identified inertia is a valid number and the friction coefficient is a very small negative number, this error might be caused by the precision of the calculation when the friction coefficient is very small. In such a case, the identified inertia may still be valid.