Skip to main content
Version: 1.0.0

II. Driver

The next step is basic driver setup. After this step the motor should be identified and basic parameters set.

In the next steps, you will need scripts that are delivered with SWTools. You can find them in the folder c:\silixcon\scripts\configuration\First_run\

Power on the controller​

Proceed with caution

Setup motor sensor​

info

This step is only for VECTOR (FOC) firmware.
BLDC firmware does not need this step.

driver type

Run script 1-Motor_sensor_selection.ys and follow the instructions.

sensor select

What the script does:

  • It login into the controller
  • Set parameter /driver/prest to the value you enter
warning

Not all sensors are supported at the same time. More info

Setup battery limits​

This setting is optional. If is not set (leave it 0), the controller will not care about battery voltage or current.

  • Battery max voltage: /driver/limiter/ubmax
  • Battery min voltage: /driver/limiter/ubmin
  • Battery max discharge current: /driver/limiter/ibpos
  • Battery max regen current: /driver/limiter/ibneg (The value is negative. )

bat limiters

info

Setup motor polepairs​

Motor pole pair is not a critical parameter, but without it, the motor will not know how fast it is spinning. And speed limitation will not work.

Set parameter /driver/motor/pp value to your motor polepairs.

Setup motor temperature protection​

This setting is optional. But you can easily burn the motor if you set high phase currents.

  • When temperature limitation starts: /driver/limiter/mtemplo
  • When temperature limitation is full: /driver/limiter/mtemphi

The value of the parameters is in [ohm] of the motor temperature sensor.

info

Reading of the motor temperature is located in /driver/motor/Rthermistor. The value is in [ohm]

Setup motor phase current​

Parameter /driver/iref will be maximum phase current at full throttle. The dimension is in [A] peak value (not RMS).

After that check parameter /driver/ipeak and make it about 20% higher than iref.
For no do not care about the meaning of ipeak parameter.

Identify the motor​

Run script 2-Motor_identification.ys and follow the instructions.

warning

If your battery is outside of the set limits (ubmin and ubmax), the identification will fail.

danger

During the identification the motor will spin. Make sure that the motor can freely spin

Motor forward direction​

The rotation direction during spin-up at the identrun is considered a positive direction.

Using wires​

To change the direction, you can swap any two motor phases. But after that, it is necessary to run the identification again.

Using settings​

Another way to change the direction is by changing the parameter /driver/ipeak to a negative value.

Example:

  • /driver/ipeak = 200 [A]
  • To reverse direction set: /driver/ipeak = -200 [A]
note

It's preferred to switch direction with wires, rather than with ipeak