https://www.instagram.com/p/BTUjn1Agni0/
I ordered
6x http://www.omc-stepperonline.com/nema-34-cnc-stepper-motor-5nm708ozin-30a-34hs383008s-p-32.html
and
I wired each steppers in parallel to one driver.
I wired three drivers to one power supply.
Have I failed to provide enough power to reach maximum torque?
interesting, but it seems to have skipped over my questions about how much power I’m giving vs how much I’m actually using. Break it down for me, please?
Well, first figure out how you have your motor wired, 8 wire motors can be set up as 4-phase unipolar, 2 phase series bipolar, or 2 phase parallel bipolar depending on how you connected the wires.
The motor data sheet covers the phase current and torque for each config, set your current limit on your drivers accordingly.
Your power supply needs to supply 2/3rds of that current setting if the motor is wired parallel, 1/3 if series wired. That’s per motor. if you have that you are getting the maximum power-ish, if short of amps in parallel see if you can switch to series. You’ll lose torque at higher rpms but that may not matter in your application.
The only switch on is SW5, so it is maximum stepping resolution, maximum amperage (4.5A). The power supply is 20A for three drivers, more then enough.
Someone in another thread suggested that it’s not going to be ~600lbs (300N) because it’s fighting gravity at ~10m/s, so it’s more like ~60lbs… which would suck, because the top half of the machine already weighs, like, 40lbs. it’s crazy heavy.
I would say more like 46lbs total but not due to gravity, more like leverage. You got a 4 inchish lever dropping your torque. Plus microstepping losses.
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