I have a bipolar (4 wire) stepper motor that isn't working right.
It runs on 24VDC. How do I analyze the voltage waveforms going into the stepper motor? I know it has 2 coils. The possibilities should be:
coil 1: wire 1=+24V, wire 2=GND
coil 1: wire 1=GND, wire 2=+24V
coil 2: wire 3=+24V, wire 4=GND
coil 2: wire 3=GND, wire 4=+24V
I want to see which coil has current flowing through it at different times.
My scope has 2 probes, ChA and ChB. Each probe has a spring loaded tip and an alligator clip.
Do I hook up the the GND black alligator clips to the negative terminal of the battery (battery ground) then hookup the spring loaded tip to the base of one of the coils (wire 1). Then for the second probe, should I hook up the black alligator clip to battery ground and the probe to (wire 3)? Does this mean I need 2 scopes (4 total channels) to see what's going on in the stepper motor?
Or can I hookup the black end of the probe to one end of the coil (wire 1) and the springy tip to the other end (wire 2)? Then hookup the second probe to (wire 3) and (wire 4) ?
I tried the second one and a big spark took place so I took it off. Am I doing the write thing?
Help out a newbie please
It runs on 24VDC. How do I analyze the voltage waveforms going into the stepper motor? I know it has 2 coils. The possibilities should be:
coil 1: wire 1=+24V, wire 2=GND
coil 1: wire 1=GND, wire 2=+24V
coil 2: wire 3=+24V, wire 4=GND
coil 2: wire 3=GND, wire 4=+24V
I want to see which coil has current flowing through it at different times.
My scope has 2 probes, ChA and ChB. Each probe has a spring loaded tip and an alligator clip.
Do I hook up the the GND black alligator clips to the negative terminal of the battery (battery ground) then hookup the spring loaded tip to the base of one of the coils (wire 1). Then for the second probe, should I hook up the black alligator clip to battery ground and the probe to (wire 3)? Does this mean I need 2 scopes (4 total channels) to see what's going on in the stepper motor?
Or can I hookup the black end of the probe to one end of the coil (wire 1) and the springy tip to the other end (wire 2)? Then hookup the second probe to (wire 3) and (wire 4) ?
I tried the second one and a big spark took place so I took it off. Am I doing the write thing?
Help out a newbie please