Question about stepper torque at certain pps.

[tahustvedt]

I'm running a 1 Nm motor with 8 microsteps and a max speed of 100 mm/s 8000 pps.

The spec sheet shows a graph of the torque at various PPS in full step mode. Do I divide my driving speed of 8000 with the number of microsteps I'm running to correlate with the graph in the specs? For example 8000 PPS / 8 microsteps = 1000 PPS in the torque graph? Or do I have to look at the 8000 PPS point on the graph where it shows nearly non-existent torque?


Thanks. I'm trying to figure out if I can improve the performance of the machine by going for smaller motors.

[ger21]

The chart is only valid with the specific drive used for the testing. With a different drive, and microstepping instead of full step, and even if the voltage is different, may give you an entirely different graph.

[tahustvedt]

Yeah but do I look at 8000 or 1000 PPS on the graph? I'm not looking for accurate numbers, just a ballpark area without any specific Nm number to see if I'm taking advantage of the motor or not. The point is that if I have to look at 8000 PPS I will benefit from getting a motor that can spin faster than the one I have now, and if I have to look at 1000 on the graph I can get a motor with higher torque (as long as the voltage I'm using can drive the stronger motor fast enough), right?

[ger21]

1000 on the graph.

[tahustvedt]

Thanks.