Hi Alexander,
Reason I asked if Flux weakening or MTPA is enabled is ID current also generated along with IQ.
I made some changes to the JSON
1. DIG Dead time was too low 200ns, I changed it for 500ns
2. GD_CONFIG1 CSA_GAIN as 40V/V from 20V/V, this is…
Part Number: MCF8329A Tool/software: I want to control the motor speed using I2C speed mode, but it seems that entering the speed value in the DIGITAL_SPEED_CTRL register has no effect. Also, it is mentioned that entering values via I2C while the motor…
Hi SAERO,
Even though option is limited we only drive with electrical HZ, the pole pair is needed only for RPM calculation.
You can use electrical HZ in place of RPM.
Thanks and Best Regards
Venkatadri S
Part Number: MCF8329A Tool/software: Dear TI engineer, hello. We are developing a high-sensitivity hair dryer that needs to achieve a fast acceleration from 6000 to 30000 revolutions per second in 0.1 seconds. We have tested it with other driving schemes…
Hi Matthew,
JSON is EEPROM values which are tuned for the motor and application requirement.
It is better to use EVM, tune the motor and once we are convinced about the performance then use that JSON (Tuned set of arrays) or EEPROM values in your host…
Part Number: MCF8329A Tool/software: Hello,
Can you help us understand how to calculate the base current on the MCF8329A?
The data sheet isn't very clear.
current sense resistor 0f 0.5mΩ
current sense gain of 20V/V
expect an RMS current of…
Hi Nguyen,
1. Can you measure the phase voltage and check the PWM output frequency?
2. Can you test with the PWM_FREQ_OUT set to 15 kHz and 25 kHz to see if using these values correct the issue?
Regards,
Joshua
Hello Venkatadri, Sorry for late reply, we tested with motor studio as you suggested and we got correct values. After that, we went through our code and we were able to solve the problem, we were reading the result with no sign, instead of positive and…
Part Number: MCF8329A Tool/software: Hello, I have a medical device using two motors, each motor attached to one MCF8329 on same I2C BUS. I have change the DEVICE_CONFIG1 to 0x00200002, but the MCF8329 still accepts command on the I2C bus with the default…
Hi Muhammet,
The MCF8329A provides list of registers to read the speed of motor
FG_SPEED_FDBK - This value is updated based on FG pin and this can be configured to show FG even when motor is coasting
SPEED_FDBK - This shows estimated speed and this shows…
