docs:blackbox:currentadjustment

2.2.1 Adjust Stepper Driver Current

OpenBuilds BlackBox has four onboard Stepper Drivers. As part of bringing your machine online, you are required to adjust the stepper driver current for each axis.

  • Adjust each axis in turn
  • Adjust the current until you can no longer stall the motor under normal operating conditions.
  • Adjusting the current too high can lead to the stepper driver overheating. The axis will shutdown until the board is power cycled, and light up the Red Exclamation Mark LED on the front.
  • Adjusting the current too low, will lead to lack of torque, and subsequently skipped steps.
Note: Pay attention to the Red Exclamation Mark LED below each axis's Current Adjustment Potentiometer: if the driver experiences any fault it will shut down and turn on the LED.

Faults that trigger the LED:

  • Overcurrent (Adjust current down a little)
  • Overtemperature (Adjust current down a little, check fan)
  • Short circuit (Check wiring, Check motor)
  • Low Input voltage (Check Power Supply)
docs/blackbox/currentadjustment.txt Ā· Last modified: 2020/06/04 16:55 by admin