Motor noise
Moderator: cnckeith
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Motor noise
My motors make a ringing noise if I give a G01 command after they finish the move. They don't do it with a G00 command. What am I doing wrong?
I have a video of it but it's too large to attach here.
I have a video of it but it's too large to attach here.
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Re: Motor noise
Do you have servos or steppers?
Uwe
Uwe
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Re: Motor noise
hello.
please post videos and photos on a online photo album (such as google photos, for free) and then post the link here.
and we need much more info about the machine system to comment. see https://centroidcncforum.com/viewtopic.php?f=60&t=1043
please post videos and photos on a online photo album (such as google photos, for free) and then post the link here.
and we need much more info about the machine system to comment. see https://centroidcncforum.com/viewtopic.php?f=60&t=1043
Need support? READ THIS POST first. http://centroidcncforum.com/viewtopic.php?f=60&t=1043
All Acorn Documentation is located here: viewtopic.php?f=60&t=3397
Answers to common questions: viewforum.php?f=63
and here viewforum.php?f=61
Gear we use but don't sell. https://www.centroidcnc.com/centroid_di ... _gear.html
All Acorn Documentation is located here: viewtopic.php?f=60&t=3397
Answers to common questions: viewforum.php?f=63
and here viewforum.php?f=61
Gear we use but don't sell. https://www.centroidcnc.com/centroid_di ... _gear.html
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Re: Motor noise
G00 moves are usually rapid jogs to position the cutter. G01 moves are usually much slower. Stepper motors "sing" at various speeds. Servo motors "dither" to hold position. Noise can be a common occurrence depending on the speed and the load.
-Mike Richards
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Re: Motor noise
Trying to figure out how to post video. Hopefully the link above works. The stepper motors make the sound after the move is over.
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Re: Motor noise
The servo is not tuned right, or the machine is set to tight so the motor can not reach the position completely.
Uwe
Uwe
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Re: Motor noise
That might just be the driver sending a holding current after the move. I can't see for certain but that looks like an open loop stepper, so it doesn't have the means of telling if the axis is out of position.
Stepper drivers generally regulate the phase current at a low level once it has finished moving, rather than leave the winding connected directly across the power supply (which would cause it to overheat). This is done by chopping the voltage and this may be what you are hearing.
I haven't used a stepper driver for a while but IIRC on some drives it may be possible to change the holding current level by means of the DIP switch settings? If so, you may be able to reduce the sound level. On a fancy driver you may even be able to change the switching frequency. This one sounds like a few kilohertz.
Stepper drivers generally regulate the phase current at a low level once it has finished moving, rather than leave the winding connected directly across the power supply (which would cause it to overheat). This is done by chopping the voltage and this may be what you are hearing.
I haven't used a stepper driver for a while but IIRC on some drives it may be possible to change the holding current level by means of the DIP switch settings? If so, you may be able to reduce the sound level. On a fancy driver you may even be able to change the switching frequency. This one sounds like a few kilohertz.
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Re: Motor noise
upload video to google photos and post link here.
how to use google photos video link is on this thread.
https://centroidcncforum.com/viewtopic.php?f=60&t=1043
Need support? READ THIS POST first. http://centroidcncforum.com/viewtopic.php?f=60&t=1043
All Acorn Documentation is located here: viewtopic.php?f=60&t=3397
Answers to common questions: viewforum.php?f=63
and here viewforum.php?f=61
Gear we use but don't sell. https://www.centroidcnc.com/centroid_di ... _gear.html
All Acorn Documentation is located here: viewtopic.php?f=60&t=3397
Answers to common questions: viewforum.php?f=63
and here viewforum.php?f=61
Gear we use but don't sell. https://www.centroidcnc.com/centroid_di ... _gear.html