It should be next to the buttons for extrude and reverse. In this example if you hit extrude it would spit out 5mm of filament at a rate of 300mm/min. The 300 value is what I was asking for.
Also, your e steps per unit I think is off significantly. For a geared extruder, the formula is e_steps_per_mm = (motor_steps_per_rev * driver_microstep) * (big_gear_teeth / small_gear_teeth) / (hob_effective_diameter * pi) For a 39:11 geared extruder, it would be (200 * 16) * (39 / 11) / (7 * 3.14159) = 515.91048. For a 51:11 gear ratio, it would be (200 * 16) * (51 / 11) / (7 * 3.14159) = 674.65217. It sounds to me like you're trying to push nearly twice the filament out the extruder in a very short time and it is just locking up for going too fast.
You say that you were running your extruder really hard and changed 1100 to 3000. Regardless of how "hard" you try to run your extruder, your steps per mm will always remain constant. You can adjust your max rates, acceleration, and jerk to squeak out more performance up to the limits the hardware will support, but steps/unit is a constant (unless you change gear ratio, microsteps, steppers, etc)
Also, your e steps per unit I think is off significantly. For a geared extruder, the formula is e_steps_per_mm = (motor_steps_per_rev * driver_microstep) * (big_gear_teeth / small_gear_teeth) / (hob_effective_diameter * pi) For a 39:11 geared extruder, it would be (200 * 16) * (39 / 11) / (7 * 3.14159) = 515.91048. For a 51:11 gear ratio, it would be (200 * 16) * (51 / 11) / (7 * 3.14159) = 674.65217. It sounds to me like you're trying to push nearly twice the filament out the extruder in a very short time and it is just locking up for going too fast.
You say that you were running your extruder really hard and changed 1100 to 3000. Regardless of how "hard" you try to run your extruder, your steps per mm will always remain constant. You can adjust your max rates, acceleration, and jerk to squeak out more performance up to the limits the hardware will support, but steps/unit is a constant (unless you change gear ratio, microsteps, steppers, etc)