Part Number:DRV8884
Hello,
I have successfully operated DRV8884 stepper motor driver with my stepper motor.
Working environment is as below:, Stepper motor datasheet is also attached.
(Please visit the site to view this file)
DRV8884 Power Supply = 12V DC
Stepper motor rated voltage = 12V DC, current = 300mA / phase
Microstepping = 16
So I have set trip current to 300mA by applying 100K resistor to RREF (pin 16). as per calculation given in datasheet. TRQ is 100%.
If I am correct for Current setting ?
Now, I am running stepper motor for sucking 40mL liquid at 150 RPM. This will take around 1.5 sec stepper run time to complete operation.
My question is
I am confused that which decay mode should I use?
I am using 16 microstepping at 150 RPM, currently i am using following decay mode.
INCREASING STEPS - Mixed decay: 30% fast
DECREASING STEPS - Mixed decay: 30% fast
but how can i decide which decay mode is best for my application?
I am not using any kind of acceleration or deceleration during start / stop.
speed is constant to 150 RPM.
Regards,
Jigar
