How fast have you pushed your machine?

[AK_Eric]

@PhilJohnson

That has about half the capabilities of the x-controllers or my controller. So don’t be surprised if adjusting the pots means you have to turn them down.

I currently am supplying each stepper motor with 2.5 amps continuously and 2.7 amps max. Four TB6600 drivers. The gShield cannot support full power to the nema 23 motors.

Thanks: Based on this handy page:

Setting the stepper motor current limit

The potentiometers on the gShield are setting the Vref (Voltage Reference) level on the TI stepper motor driver chips. This determines the current limit for the driver. You can measure this voltage at one of the potentiometer pins (see photo) and adjust it to obtain a given current limit. Use great care as the potentiometer pins are very close to other components and it is easy to short the pins together with your meter probe. Really bad things happen. The gShield (version 5) uses a 0.1 ohm cu…

Using my meter, I checked all my pots, they’re all set to 2.02v, which means I should be applying around 2.5a to all the steppers (which I see are rated at 2.8a), which looks like is max for my current setup. So maybe I’m just going to fast for the current power provided to the machine.