[baranumut]

Hi everyone this is my first post on this forum and i need some help
I just bought 3 stepper motors to build my first cnc router. stickers of the motors are taken out and they put another sticker on it. in new sticker is written:
KH56LM2
STEP : 1.8°
T : 1.3NM
R : 2.25
I : 2.0A
JAPAN SERVO CO., LTD

As i don't know the voltage i could not decide what kind of controller ic i need to use. Any help will be appreciated. Thank you.

[ger21]

V=IR. 4.5V

[baranumut]

Thank you very much. Sorry to take your time. I just didn't know.

[James Newton]

Just in case you don't know this as well, that's the maximum /sustained/ voltage the motor can manage, NOT the actual drive voltage you should use. You want a MUCH higher drive voltage and then the driver will regulate the voltage down to provide an average below the max, but peak much higher to quickly get the motor to step from one position to the other. At 4 volts, the motor would turn, but very very slowly. We don't have an inductance measurement for that motor, and it would be suspect because of the labels changing, but in general, you probably want something like 24 volts.

If you like this page explains why:
techref.massmind.org/techref/io/stepper/linistep/lini_sim.htm
(scroll down, read the text under the simulation)