Hi Guys,
Just going through my box of steppers and this one, a Symbol Technologies 50-03500-020 makes no sense!
It's a 5-wire, but my ohmeter shows it as being half bipolar, and half unipolar. Pins 1&2 and 4&5 give me 120[ch937], while pin 3 looks like a centre tap on the coil between 1&2.
Should I ignore pin 3 and just drive it as a bipolar, or is there a better way?
Any ideas gratefully received,
Thomas
Should I ignore pin 3 and just drive it as a bipolar,
Yes.
or is there a better way?
Yes, connect the two ends together and drive between the ends and the centre tap. In that way you reduce the voltage needed to get a certain current down it. In that way with a current limiting drive you can go faster because the current gets into the coils quicker.
Wow, thanks Mike!
Tried both configurations on the bench just now, they work great. Tiny assymetry in torque on every other step (as kinda expected) using the 2nd method, but your help has transformed another bit of 'junk' into a useful tool.
Thank you so much!
T