DM420 Digital Stepper Driver 0.3A - 2.0A DC18V - 30V for Nema 8 11 14 16 17 Stepper Motor

Hybrid Stepper Motor Driver Description：

Features：

● Average DC control with two-phase sinusoidal AC drive outputs

● DC +18 ~ +30V power supply

● Optically isolated signal input/output

● Over-voltage, under-voltage, over-current and phase-to-phase short-circuit protections

● Current 8 steps, settable range 0.3A ~ 2.0A

● Subdivision 8 steps, range 400 ~ 12800

Interface Signal Description：

DIP Switch Setting：

In order to drive different torque stepping motors, users can set the output phase current of the driver through the dip switches SW1, SW2, SW3 on the driver panel, the output current corresponding to each switch position, the output current corresponding to different models of the driver is different, details see the table below:

Micro step subdivision setting：

1, Q: The motor does not turn and no holding torque:

     A: ① check whether the power line is connected to the wrong voltage is too low, need to increase the voltage or correct the power line

         ② check whether the motor wiring is correct, if not correct motor wiring. Check if the motor wiring is correct, if not, correct the motor wiring.

         ③ Whether the enable signal is valid, resulting in the motor does not work.

         ④ Is the subdividing parameter correct?

         ⑤ Is the current parameter correct?

2、Q：Motor does not rotate but has holding torque:

      A: ① The phase sequence of motor wires is wrong, need to swap any two wires.

          ② Pulse signal input is wrong, need to check the pulse wiring.

3、Q: The motor torque is too small:

      A: ① Phase current setting is too small, need to set the phase current corresponding to the motor.

          ② acceleration is too fast, reduce the acceleration value

          ③ motor blocking, need to rule out mechanical problems

          ④ drive and motor mismatch, need to replace the appropriate drive

4、Q：Motor steering error:

      A: ① motor line phase sequence is wrong, need to swap any two wires

          ② motor line has a broken circuit, check and connect the right

5、Q：The alarm indicator light is on:

     A: ① Is the motor wire connected incorrectly

         ② Whether there is over-voltage and under-voltage conditions

         ③ Motor or driver is damaged

6、Q：Motor acceleration blocking:

     A: ① short acceleration time

         ② motor torque is too small

         ③ Low voltage or current