Original question:
I am utilizing LAUNCHXL-F2800025C and a DRV8353RS-EVM to work through the Universal Motor Control Lab. In the Universal Motor Control Lab incremental build level 2. I am getting moduleOvercurrent faults. I have successfully completed the lab through build level 1. The DRV8353EVM does not indicate a fault nor do the registers from the 8353.
Yanming, Thanks for your response. I changed the above parameters to what they should be for my motor. And have the same results. Also, could you please provide a link to the guide you are referring to that has what all these parameters should be set to? Many appear to be redundant and that makes it confusing. I will post my settings below and a screen shot of the overcurrent fault below. Why is the CMPLLATCH bit being set?
#define USER_MOTOR1_TYPE MOTOR_TYPE_PM #define USER_MOTOR1_NUM_POLE_PAIRS (2) #define USER_MOTOR1_Rr_Ohm (NULL) #define USER_MOTOR1_Rs_Ohm (NULL) #define USER_MOTOR1_Ls_d_H (NULL) #define USER_MOTOR1_Ls_q_H (NULL) #define USER_MOTOR1_RATED_FLUX_VpHz (NULL) #define USER_MOTOR1_MAGNETIZING_CURRENT_A (NULL) #define USER_MOTOR1_RES_EST_CURRENT_A (2.0f) #define USER_MOTOR1_IND_EST_CURRENT_A (-1.5f) #define USER_MOTOR1_MAX_CURRENT_A (10.0f) #define USER_MOTOR1_FLUX_EXC_FREQ_Hz (40.0f) // Number of lines on the motor's quadrature encoder #define USER_MOTOR1_NUM_ENC_SLOTS (NULL) #define USER_MOTOR1_INERTIA_Kgm2 (7.06154e-06) #define USER_MOTOR1_FREQ_NEARZEROLIMIT_Hz (5.0f) // Hz #define USER_MOTOR1_RATED_VOLTAGE_V (36.0f) #define USER_MOTOR1_RATED_SPEED_KRPM (3.0f) #define USER_MOTOR1_FREQ_MIN_HZ (9.0f) // Hz #define USER_MOTOR1_FREQ_MAX_HZ (600.0f) // Hz #define USER_MOTOR1_FREQ_LOW_HZ (5.0f) // Hz #define USER_MOTOR1_FREQ_HIGH_HZ (100.0f) // Hz #define USER_MOTOR1_VOLT_MIN_V (5.0f) // Volt #define USER_MOTOR1_VOLT_MAX_V (36.0f) // Volt #define USER_MOTOR1_FORCE_DELTA_A (0.05f) // A #define USER_MOTOR1_ALIGN_DELTA_A (0.01f) // A #define USER_MOTOR1_FLUX_CURRENT_A (0.5f) // A #define USER_MOTOR1_ALIGN_CURRENT_A (1.5f) // A #define USER_MOTOR1_STARTUP_CURRENT_A (11.0f) // A #define USER_MOTOR1_TORQUE_CURRENT_A (2.0f) // A #define USER_MOTOR1_OVER_CURRENT_A (12.0f) // A #define USER_MOTOR1_BRAKE_CURRENT_A (1.0f) // A #define USER_MOTOR1_BRAKE_TIME_DELAY (12000U) // 60s/5ms #define USER_MOTOR1_SPEED_START_Hz (30.0f) #define USER_MOTOR1_SPEED_FORCE_Hz (25.0f) #define USER_MOTOR1_ACCEL_START_Hzps (10.0f) #define USER_MOTOR1_ACCEL_MAX_Hzps (20.0f) #define USER_MOTOR1_SPEED_FS_Hz (3.0f) // only for encoder #define USER_MOTOR1_ENC_POS_MAX (USER_MOTOR1_NUM_ENC_SLOTS * 4 - 1) #define USER_MOTOR1_ENC_POS_OFFSET (668) // Only for eSMO #define USER_MOTOR1_KSLIDE_MAX (0.75f) // #define USER_MOTOR1_KSLIDE_MIN (0.15f) #define USER_MOTOR1_PLL_KP_MAX (6.75f) // #define USER_MOTOR1_PLL_KP_MIN (0.75f) #define USER_MOTOR1_PLL_KP_SF (5.0f) #define USER_MOTOR1_BEMF_THRESHOLD (0.5f) #define USER_MOTOR1_BEMF_KSLF_FC_Hz (1.0f) #define USER_MOTOR1_THETA_OFFSET_SF (1.0f) #define USER_MOTOR1_SPEED_LPF_FC_Hz (200.0f) // for IS-BLDC #define USER_MOTOR1_RAMP_START_Hz (3.0f) #define USER_MOTOR1_RAMP_END_Hz (30.0f) #define USER_MOTOR1_RAMP_DELAY (5) #define USER_MOTOR1_ISBLDC_INT_MAX (0.015f) #define USER_MOTOR1_ISBLDC_INT_MIN (0.010f) // for Rs online calibration #define USER_MOTOR1_RSONLINE_WAIT_TIME (60000U) // 5min/300s at 5ms base #define USER_MOTOR1_RSONLINE_WORK_TIME (24000U) //2min/120s at 5ms base
Yanming,
I wanted to give you an update. I ran build level 3 and 4 and I did not get the moduleOverCurrent faults. But now I am getting motorLostPhase indication as shown below. I assumed that it might be a bad connection but I checked that. I have had the same motor running with a F280069M and a drv8305. But I am setting up a different motor to test with just to rule it out. I just wanted to keep this thread going. Any insight would be appreciated.
Hey,
I am using a different motor for the development.
The motor parameters are below.
The Phase current is measured @ 2.78A per phase and that triggers ModuleOvercurrent. Tracking the nFault pin no fault is set by the driver and also the driver registers are not showing any fault.
What triggers the Module overcurrent, like the case above? I have the same and it is not a fult coming from the 8323 DRV.
Can you help?
