Thread: Strike CNC (My first CNC router)
I ran the SY60STH88 and the SY60STH100 on the same drivers at the same voltage and the larger motor could only get to about 60% of the speed as the 88mm long motor.
I ran them on the Leadshine M542 at 40V and the Leadshine M880 at 70V.
While the longer motor would give more torque at the lower speeds, this soon changed after hitting a few hundred RPM.
Also the specification in the link you posted looks all wrong.
Look at the inductance and the current and compare it to the 88mm long motor.
The Inductance is lower than the 88mm long motor but also the current is lower.
You would expect the inductance to be higher if the current is lower.
I suspect the inductance is actually a lot higher than is shown in the datasheet, and if this is true you need a much higher voltage driver to get a good performance from the motor.
even at 70V, the 88mm long motor performed better.
There is only so much power you can get from a motor with such a small frame, and if you want more power you have no choice but to go to a larger frame motor like a nema 34, but at the same time also use much higher voltage.
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Oh and to simulate torque i coupled the motor to a larger nema 34 motor and shorted the windings.
This works but its bloody noisy.Visit Us: www.zappautomation.com
I've looked back through some old emails and can confirm the PSU is 60v. No other details on the make or model of the drivers though.
Fair enough, I should have compared the power consumption. The ratings imply the power consumption is nearly equal which is inconsistent. I'll continue to steer clear of those motors...
Weird, I thought I'd posted this earlier but must have miss-clicked.
Should problems arise. Can you tell me if its possible to swap the nema24 to a more suitable motor? And if so what would you recommend.
Last edited by Strike CNC; 16-02-2012 at 08:31 AM. Reason: original p
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