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Author Topic: Vibration At Low Speed! Help please!  (Read 8287 times)

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Re: Vibration At Low Speed! Help please!
« Reply #20 on: February 07, 2015, 04:22:00 AM »
I have adjusted my steps per unit very well, now i will try to change the dip switches how did you say,,
Re: Vibration At Low Speed! Help please!
« Reply #21 on: February 07, 2015, 04:26:31 AM »
Ok Hood, i have put 6 & 5 to off, 1 & 2 & 3 & 4 to on, yes it more smoother now, but i hear noise in the motor when it moving and stoping!

Offline Hood

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Re: Vibration At Low Speed! Help please!
« Reply #22 on: February 07, 2015, 04:31:09 AM »
Put 5 to Off and 6 to On, that will give you 1/8 stepping. You will need to alter your steps per unit in Mach accordingly.

For dip switches 1 and 2 you will need to know the current rating of your steppers and set them to match.

The noise may be nothing to worry about and may be quite normal but make sure the current setting (dips 1 and 2) is correct, if you have it set too high you may kill your steppers.

Hood
Re: Vibration At Low Speed! Help please!
« Reply #23 on: February 07, 2015, 04:40:31 AM »
OK Hood, i have adjusting the 5 and 6 and its apear ok, but excuse me i didnt understand you how to know the current rating of my stepper to the dip 1 and 2?
Re: Vibration At Low Speed! Help please!
« Reply #24 on: February 07, 2015, 04:44:23 AM »
and in the motor tuning what i need to put in the step/dir pulse?

Offline ger21

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Re: Vibration At Low Speed! Help please!
« Reply #25 on: February 07, 2015, 08:07:58 AM »
You might be seeing resonance. Adding dampers to the motors may make it much smoother.
Gerry

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Re: Vibration At Low Speed! Help please!
« Reply #26 on: February 07, 2015, 09:09:28 AM »
ok now its ok, but i can understand why my y axis its ok and more more smoother than x axis? they have the same pinions and racks and dip switches setting!

Offline Hood

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Re: Vibration At Low Speed! Help please!
« Reply #27 on: February 07, 2015, 03:10:03 PM »
Assuming the motors are the same then it could simply be the mass of the axis is different and thus causing issues.
Hood
Re: Vibration At Low Speed! Help please!
« Reply #28 on: February 07, 2015, 03:28:43 PM »
Excuse me Hood, but it's a normal thing that the axis be different mass in every table!
I didn't know what to do now! I can't know where is the problem! Or on this Chinese driver or on motor or I need to change my system to be with drivers motor! Or with my racks and pinions :S
How I see and feel, my problem will be resolved just if I connect the motors to drivers!
What you think mr. Hood?

Offline Hood

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Re: Vibration At Low Speed! Help please!
« Reply #29 on: February 07, 2015, 04:35:00 PM »
Yes it is normal for axes to be different and as such you may require different motors or drive setups on each axis, all depends on how different they are.
You may just need to alter the decay as I have heard that some motors need the settings different from others.
The main issue is likely that the Chinese drives are not the best so you may have to mess around to get the best you can out of them. Lots of people have given up and gone with G504s and say the difference is amazing but if you can get a satisfactory result with what you have then all is good.

Hood