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GSM2 Y-axis resonance

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GSM2 Y-axis resonance | 14 May, 2016

Any ideas that can cause y-axis resonance? I ruled out all usual the suspects (tacho sensor, driver cards, motor driver etc.). Looks like some mechanical issue, but can't figure it out. I suspect leadscrew nut - I checked it with motion diagnostics sw. and there are some positions when it does oscillate and then there are some positions when it does not. Oscillating points are regularly spaced, although not easy to "hit". Oh, btw. - it's used machine we just bought, so it did not start to occur just out of the blue...

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GSM2 Y-axis resonance | 1 June, 2016

You can try to null the axis, it's working sometime Also, lower the acceleration to 2000 instead of 4000 and the max velocity to 350 instead of 508.

You can also try to swicht the Y1 driver with Y2 driver

Do you have the AMC disks to troubleshoot ?

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GSM2 Y-axis resonance | 2 June, 2016

I did try to null the axis - no improvement. I have AMC software and tried (almost) everything related to electronics (except for changing linear encoders, but this seems to be OK - when I move axis manually, position numbers change smoothly). It looks like some mechanical issue - however, when I move axis back-forth, I can't feel anything - it goes very smoothly...

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GSM2 Y-axis resonance | 27 April, 2017

It's been a while since I posted this message, so I'll give it another try. Any ideas, anybody?

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GSM2 Y-axis resonance | 28 April, 2017

i'd say its a ball nut. maybe it came loose or the balls are worn out. also, check timing belt! if resonance is periodical like you say then there is great probability that belt or/and belt pulleys got worn out. i had combination of these on one of my selective machines.

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