Electronic – help me to run stepper motor

stepper motorstepper-driver

I have a stepper motor ( Model = 23KM-K381-01V , NO.T6Z23-07 , DWG NO.56AA80112).

Motor Specifications:

Motor is unipolar , 6Wires , 2A current , 1.8 deg step angle..
Motor is second hand.
I do not have datasheet of the motor.
and the worst thing is no wire is connected to the motor. so I can not take benefit of color coding.

So my question is how do I know that which wire of the motor should be connected to A+ , A- , B+ , B- of the stepper motor driver…

Thanks in advance for the help.

Best Answer

You can identify the four windings by measuring resistance. Resistance of L1-to-centre-tap will equal resistance of L2-to-centre-tap. (And resistance of L3-to-centre-tap will equal resistance of L4-to-centre tap). All terminals of L1/L2 have infinite resistance to all terminals of L3/L4.
Six-wire stepper test circuit can go like this. Use a low-voltage DC source that doesn't heat the motor coils when one of the four switches are closed.:

schematic

simulate this circuit – Schematic created using CircuitLab
A typical 4-step sequence might be:

  1. SW1:closed, SW2:open, SW3:open, SW4:open
  2. SW1:open, SW2:open, SW3:closed, SW4:open
  3. SW1:open, SW2:closed, SW3:open, SW4:open
  4. SW1:open, SW2:open, SW3:open, SW4:closed

There are other step-sequence possibilities than this one. At each step, check which way the stepper rotates. You should be able to arrange the coils so that the sequence steps always clockwise.