SLLA661 April   2025 MCF8315A , MCF8315C , MCF8315C-Q1 , MCF8315D , MCF8316A , MCF8316C-Q1 , MCF8316D , MCF8329A , MCF8329A-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Prerequisites to Run the Motor with MOTORSTUDIO
  6. 3Getting Started with MOTORSTUDIO
    1. 3.1 Motor Parameters
      1. 3.1.1 Manual Measurements
        1. 3.1.1.1 Entering Manual Measurements Into MOTORSTUDIO
      2. 3.1.2 Motor Parameter Extraction Tool Measurements
        1. 3.1.2.1 Motor BEMF Constant Measurement Through MPET – Along With Motor Resistance and Motor Inductance for MCF8315C, 16C
        2. 3.1.2.2 Mechanical Parameters (SPD_LOOP_KP, SPD_LOOP_KI) Measurement Through MPET
  7. 4Motor Runs
  8. 5Summary
  9. 6References

3.1.2.1 Motor BEMF Constant Measurement Through MPET – Along With Motor Resistance and Motor Inductance for MCF8315C, 16C

Step 1: Click MPET (Refer Figure 3-3 ) .

Step 2: Follow Figure 3-4 or Figure 3-5 settings in MPET Select.

Settings for BEMF Measurement - MCF8329AFigure 3-4 Settings for BEMF Measurement - MCF8329A
Settings for R, L and BEMF Measurement - MCF8315C, 6CFigure 3-5 Settings for R, L and BEMF Measurement - MCF8315C, 6C
Note: Disable Measure Motor Resistance and Measure Motor Inductance in this step if you have measured and entered the values manually using Table 3-3 already.

Step 3: Enable Auto read motor status in Motor Status section on the right most pane.

Step 4: Click Controls tab on right most pane and enable Speed Control via I2C.

Step 5: In the same tab set the slider below I2C Speed Command Percentage to zero.

Step 6: Click Faults tab on right most pane and enable Auto read fault status. Click on Clear Faults if there are any existing faults.

Step 7: Click Run MPET below MPET Select .

Step 8: Once Motor BEMF measurement is completed (refer Logs window), click Write MPET results to Shadow registers.