Run the code by going to Run → Resume or clicking the Resume button in the tool bar. Check the following:

• systemVars.flagEnableSystem needs to be set to 1 after a fixed time, meaning the offset calibration has been done. The fault flags, motorVars_M1.faultMtrUse.all, should be equal to 0. Set the variable motorVars_M1.flagEnableRunAndIdentify to 1.
• The motor will run with v/f open loop. Tune the v/f profile parameters in user_mtr1.h as below according to the specification of the motor if the motor doesn't spin smoothly.

  #define USER_MOTOR1_FREQ_LOW_Hz   (10.0f)   // Hz
  #define USER_MOTOR1_FREQ_HIGH_Hz  (200.0f)  // Hz
  #define USER_MOTOR1_VOLT_MIN_V    (10.0f)   // Volt
  #define USER_MOTOR1_VOLT_MAX_V    (200.0f)  // Volt

• After that, the motor spins with a setting speed in the variable motorVars_M1.speedRef_Hz, check the value of motorVars_M1.speed_Hz in Expressions window, the values of these two variables should be very close as shown in Figure 3-10.

• Use the DATALOG module with the CCS Graph utility to check the current sensing signals. Go to Tools → Graph → Dual Time to launch the tool and use the Import button to navigate to the file <SDK install location>\solutions\tidm_02012_ecompressor\common\debug\motor_datalog_fp2.graphProp. Click OK and the graphed current readings should be displayed as shown in Figure 3-11. The code below shows how the variables to be logged are configured in sys_main.h. For more details about about the DATALOG module, see the Motor Control SDK Universal Project and Lab User's Guide.

      // set datalog parameters
      datalogObj->iptr[0] = &motorVars_M1.adcData.I_A.value[0];
      datalogObj->iptr[1] = &motorVars_M1.adcData.I_A.value[1];

• Verify the over current fault protection by decreasing the value of the variable motorVars_M1.overCurrent_A, the over current protection is implemented by the CMPSS modules. The over current fault will be triggered if the motorVars_M1.overCurrent_A is set to a value less than the motor phase current actual value. When the fault occurs the PWM output will be disabled, the motorVars_M1.flagEnableRunAndIdentify will be cleared to 0, and the motorVars_M1.faultMtrUse.all will be set to 0x10 (16) as shown in Figure 3-10.
• Set the variable motorVars_M1.flagEnableRunAndIdentify to 0 to stop the motor. Terminate the debug session and power off the power supply to the inverter board.

Figure 3-10 Build Level 2 Variables in the Expressions View

The Graph tool can be used to display the DATALOG buffers.

Figure 3-11 Build Level 2 Data Logged Current Readings in the CCS Graph Tool

The over current fault will trip the PWM output and also be reflected in the fault flag variables.

Figure 3-12 Build Level 2 Over Current Protection Check in the Expressions View