Hi, above is the sch,
MODE0 MODE1 MODE2 ------> High
DECAY ------------------------------> High
ENABLE --------------------------->LOW
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Drive 42 stepper motors
1. when use +12V power supply
AVREF/BVREF adjustment voltage is lower than 0.5V, the motor can work,
When the regulation voltage is greater than 0.5V,,, start the motor, the motor will not work, at this time nFault is low
2. When use +24V power supply
The AVREF/BVREF adjustment voltage is lower than 1.1V , the motor can work,
When the adjustment voltage is greater than 1.1V, start the motor , it does not work. At this time, nFault is low.
both the 12V or 24V power supply, the motor speed can not exceed 200rpm.
What is the cause of this problem and how is it handled?
