Re: [CAD_CAM_EDM_DRO] Servo drivers ?

R Rogers wrote:

>As the kids say "My bad". Anyways, my motors sound similar to the ones you outlined. 40v/k 13.7 amps continuous etc. Mine are rated at 40.7 lb-in. Is that total torque. Or is it per what?
>
>Ron
>
>

No problem. Me bad often :)

Mine have continuous stall torque number, but no Kt number. I
calculated Kt by dividing continuous torque by continuous current
(28/9.2 = 3.04) in-Lb/A.

I also did some testing with my lab power supply (capable of 60V, 18A).
While holding the shaft, I ramped up the voltage and looked at the
current. These motors appear to have a 1.0 ohm coil resistance, since
the V and I meters tracked each other. I could only hold it up to 5 A
or so, though. The max voltage of 150 actually would allow for full
torque at full speed, plus a small margin:
100V = 2.5kRPM * 40V/kRPM
37V = 37A * 1 ohm
137V total

So, these motors could be pushing a heavy load through mud at full speed.

- Steve