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6. Adjustment of troubleshooting
1) , the status on light’s indication
PWR: green, normal work light.
ALM: red, failure light, the motor with phase short-circuit, overvoltage and under-voltage
protection.
2) Troubles
Alarm indicator
Reasons Measures
Wrong connection for power
Check wiring of power
LED off turn
Low-voltages for power
Enlarge voltage of power
Wrong connection of stepper
motor
Correct its wiring
Motor doesn’t run, without
holding torque
RESET signal is effective
when offline
Make RESET ineffective
Motor doesn’t run, but
maintains
holding torque
Without input pulse signal
Adjust PMW & signal level
Wrong wires’ connection
Change connection for any of
2 wires
Motor runs wrong direction
Wrong input direction signal
Change direction setting
Too small relative to current
setting
Correct rated current setting
Acceleration is too fast
Reduce the acceleration
Motor stalls
Rule out mechanical failure
Motor’s holding torque is
too small
Driver does not match with the
motor
Change a suitable driver
7. Driver wiring
A complete stepper motor control system should contain stepper drives, DC power supply and
controller (pulse source). The following is a typical system wiring diagram