Motors Speed painfully slow

Gentemen,

I´ve recently built my first 3D Cartesian printer. I am using NEMA23 steppers connected to 3mm pitch lead screws, driven by pololu drivers, RAMPS1.4 board and Marlin fw V1.1.5.

Honestly, I´ve been searching for the answer for my problem for a while (perhaps I am not asking the correct question) therefore, I gave up and decided to ask the specialists.

During my first move trials, I saw that the motors were vibrating and not moving. After searching here and there, I found that the problem was related to the wiring. This was solved using arduino MEGA connected to the driver and directly to the motor, using a specific piece of code, just to find out the correct order of the wires.

Then, after everything was assembled, I tried to move X and/or Y just 10 mm to see how it goes but nothing happened, only the vibration. This was done using the display menu. Searching here and there, I decided to lower my speed setting (XY_feedrate) to 10 and vóila, both motors moved without problems despite the slowliness.

Downloaded Repetier, enabled the EEPROM in Marlin FW, got everyone talking to each other and still can not make the motors move faster then 10 mm/s, even using Repetier and changing the parameters from there.

The pololu drives were set to feed 2A to my motors, which is the phase current specified. I am using 12 Vdc.

Did anyone have a similar problem? Could you point me to the correct information on how to calibrate the speed etc?

I know it is a dumb question but so far I was not able to fix it.

The motors are moving the correct distance when instructed to do so. Another thing I noticed is that, according to the Marlin page, there are two feedrates for XY, one for moving and one for homing. Even when I home the axis to their parking positions, they still move very slowly.

Appreciate any light you can provide.

Regards,

Marcus

If the steppers are vibrating and not moving when you tell them to move... Usually the power to them is too low or you are telling them to move too fast.

Most boards let you control how much power is applied to the steppers. If yours has that... Crank it up. But the other thing you can do is bump the feed rate down and see if they start moving like you expect.

Have you fitted the 3 jumpers under each stepper driver to set 1/16th stepping

I have the seem problem but i use NEMA17
i wish you found the solve for this problem

Hello my friend,

I am afraid I do not have good news.

According to this page Step Rates whatever value you are using close to 12mm/s is acceptable since "It mostly depends on the CPU used on a controller, its clock frequency, the number of motors being stepped at high speed, and the algorithm used by the firmware to calculate motor movements".

In my case, I am using a TR14 lead screw with 3mm pitch. I can´t go over 10mm/s in the firmware.

Please, have a look and see of you agree.

Regards,

Marcus

thank u i put the speed 500 mm/s it is faster speed i can work in it so maybe no solution for this case
but i have a problem ,My motors were very hot quickly and i don't know why i tried test program to try the motors they were very fantastic and didn't be hot , so i want to ask if there are any solution for my problem