SLLA661A April 2025 – June 2026 MCF8315A , MCF8315C , MCF8315C-Q1 , MCF8315D , MCF8316A , MCF8316C-Q1 , MCF8316D , MCF8329A , MCF8329A-Q1
Figure 5-5 Motor Parameter Extraction
Tool (MPET)The Motor Parameter Extraction Tool (MPET) is a device algorithm feature that assists in identifying motor electrical parameters, including phase resistance, phase inductance, BEMF constant, and speed loop coefficients (Kp and Ki).
To execute MPET, users must configure the motor startup parameters listed under the Motor Parameters section on the MPET page.
For MCF8329x devices, the following configurations must be established before running MPET:
i) Base current and CSA gain parameters based on the shunt resistor value
ii) Motor phase resistance and phase inductance
Users can select the parameters to be measured during MPET operation by choosing options under MPET Select.
Click the "Run MPET" command button to initiate motor parameter measurement.
Upon successful execution of MPET, the measured parameters are displayed in the MPET Result section. Users can select the "Write MPET Result To Shadow Registers" button to transfer the measured motor parameters into the device registers.