Weird Sound From Z motor and Limited Movement of Y Axis

K8200 3D Printer K8200 - Wiring and electronics
1

Today is my first time to use printer. It was in manual mode.
When I try to move motors, I come up with 2 problems.
One is: Y axis movement is limited to -30 to +30 'mm movement. Y table was near the maximum positive position. I can not move table more than 30mm in negative direction (no motor sound just not moving)

My second problem is that when control the motor in manual mode I can not move it neither in positive direction nor in negative dir. And there is very weird sound like vibrating something?

Any suggestions for my two problems above,

Best wishes,

Sedat Demir

2

For the movement limit :
Did you check the correct measurements are set in repetiers Printer settings?
Did you home the printer first?

Stuttering motors can be caused by :
Too low or too high reference voltage set on the stepper drivers. (set them to 0.55v)
Faulty wiring (switched wires or intermittent open/short circuits)

3

[quote=“ichbinsnur”]For the movement limit :
Did you check the correct measurements are set in repetiers Printer settings?
Did you home the printer first?

Stuttering motors can be caused by :
Too low or too high reference voltage set on the stepper drivers. (set them to 0.55v)
Faulty wiring (switched wires or intermittent open/short circuits)[/quote]

Actually I remember that, I did not put the heated bed on the middle point. But the printer settings are proper for K8200 working volume.

And for the Z motor, First I colud get very little movement in downward direction. But after some trial I did not get any movement both in upwards or in downwards.
Do you think that I can damage anything?

4

Have you already checked the driver voltages?

5

Yes I have calibrated all of the driver voltages in between 0.452 - 0.466.
I could not do fine tuning then two of the drivers are set to be around 0.466Volts

But I can say that Z motor driver is set to be exactly 0.452V

6

I suggest setting ALL drivers to 0.55v
This turned out to work better on most machines.

7

[quote=“ichbinsnur”]I suggest setting ALL drivers to 0.55v
This turned out to work better on most machines.[/quote]

thank you for your suggestion. I will try and inform you about situation.

8

I have calibrated the drivers to about 0.54-0.55
And I have centered the Y axis.
All of the motors work, however there is still some noise from Z motor, I think it is due to some misalignment of threaded rod and motor shaft. I think flexible coupling is esential for Z motor of 8200. I will purchase one…

9

Yep, that’s always a good idea for screw drives.

Nice to hear the motors work now.