I recently purchased 4 – KL-4030s, a C10 BoB and a 5v power supply from Automation Technologies. Connected these items to 4 – 425 oz in 4-wire motors. I used an existing 24v/5A power supply pushing out about 27v.
Now the weird part. If I run Y-A everything is good, all quiet. As soon as I run EITHER X or Z after running Y-A then both X and Z motors start to hum, quiet or a little louder at times. This anomaly seems to steal power from all 4 motors after that and they all run louder and clunkier. The humming can be stopped or started by where the motor is "clocked" inside itself, I think. I mean, I can stop the humming in X by very slight jogging of X then stop the noise from Z by "mini-movement" also.
If I unplug X and do this procedure again with only Z, then Z hums. If I unplug Z and do this procedure again with only X then X hums. But never Y –A! If only Z and Y-A are plugged in, Z runs perfectly quiet until I run Y-A. Likewise with X. My wiring looks like the diagram posted on their website. I set 1/8 microstep and 2.4 amps per 4030 driver (DIP switch 3, 5 & 7 made).
The Y & A motors never make a noise like X and Z but they all seem to lose power when the noise starts, even Y & A.
I contacted John @ Automation Technologies, all he suggested is to purchase one of his power supplies. Not much help for my current dilemma. I will probably do that whenever my money situation improves. But in the meantime what else can I do?
I hope someone can help. I don't have enough hair to pull anymore out!!