Project Logs

Collapse

• Experiment Stepper Motor

  Ricky Zhang • 06/04/2018 at 01:34 • 0 comments

  Disclaimer:

  I have zero experiences in stepper motor before. So I need to figure out how stepper motor works.  The following is a log on my learning process of stepper motor.

  Learning Process:

  There are 3 types of stepper: unipolar, bipolar and hybrid stepper motor. We need to figure out what type of stepper motor and also its wiring.

  I got an unknown source of stepper motor with model TEC CLA45-14601 on the label. There are six wires on it. Based on the number of wires and according to the Internet, this can be a unipolar or a hybrid.

  Because I can't google its data sheet. I have to use digital meter to check the resistance of each pin combination. This youtube video is very helpful to grasp the idea how to identify coil and tap.

  Wire	Resistance	Note
  Red	Red-Yellow: not connected Red-Brown: 20 Ohm Red-Blue: not connected Red-White: 11 Ohm Red-Black: not connected	RED, Brown, White is in the same coil Yellow, Blue, Black is in the same coil
  Yellow	Yellow-Brown: not connected Yellow-Blue: 20 Ohm Yellow-White: not connected Yellow-Black: 11 Ohm	Black is tap
  Brown	Brown-Blue: not connected Brown-White: 11 ohm Brown-Black: not connected	White is tap
  Blue	Blue-White: not connected Blue-Black: 11 ohm
  White	White-Black: not connected
  Black

  Rule of thumb

  • If not connected, they are not in the same winding
  • For the same winding, the resistance between coil end and tap is the half of the resistance between two coil.

  
  Based on such rule we can deduce which two are tap and which are belong to the same winding. See the notes above.

  To be continue...

View project log