Industrial Servo Motor YASKAWA SGM-01B312 AC SERVO MOTOR 100W 100V 2.2A 0.318N.m

 
 
 
OTHER SUPERIOR PRODUCTS

SIMILAR PRODUCTS

WIRING DIAGRAM
The internal wiring diagram of both a bipolar and unipolar stepper motor is shown in Fig. 19.14. The wiring in a bipolar stepper is actually easy to decode. You use a volt-ohm meter to do the job right. You can be fairly sure the motor is two-phase if it has only four wires leading to it. You can identify the phases by connecting the leads of the meter to each wire and noting the resistance. Wire pairs that give an open reading (infinite ohms) represent two different coils (phases). You can readily identify mating phases when there is a small resistance through the wire pair.

Unipolar steppers behave the same, but with a slight twist. Let’s say, for argument’s sake, that the motor has eight wires leading to it. Each winding, then, has a pair of wires. Connect your meter to each wire in turn to identify the mating pairs. As illustrated in Fig. 19.15, no reading (infinite ohms) signifies that the wires do not lead to the same winding; a reading indicates a winding. If the motor has six wires, then four of the leads go to one side of the windings. The other two are commons and connect to the other side of the windings (see Fig. 19.16).
Decoding this wiring scheme takes some patience, but it can be done. First, separate all those wires where you get an open reading. At the end of your test, there should be two three-wire sets that provide some reading among each of the leads.