Replace a Servo Driver with Stepper Driver
15 Jul 2016 08:52 #77477
by bodhi_94
Replace a Servo Driver with Stepper Driver was created by bodhi_94
I am building a 6 axis robot arm with linux cnc.. All 6 axises are controlled using servo motors.. Unfortunately 6th axis's servo driver was burnt.. I wish to replace this burnt servo motor + driver with stepper moter+ driver... How can i do this?
All my config files are attached..
All my config files are attached..
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15 Jul 2016 13:33 #77487
by emcPT
Replied by emcPT on topic Replace a Servo Driver with Stepper Driver
Servo motors have a different torque/speed curve of steppers.
Before you think on the configuration of a stepper you should think on the mechanics and to understand if you can replace one with the other.
What brand of robot do you have?
Before you think on the configuration of a stepper you should think on the mechanics and to understand if you can replace one with the other.
What brand of robot do you have?
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15 Jul 2016 13:43 #77488
by bodhi_94
Replied by bodhi_94 on topic Replace a Servo Driver with Stepper Driver
Its a glue applying robot arm.. The burnt servo(6th axis) was used to control the glue head.. Currently we have no servo drivers left to replace the burnt driver.. That is why we planned to use a stepper driver...
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15 Jul 2016 14:19 #77494
by emcPT
Replied by emcPT on topic Replace a Servo Driver with Stepper Driver
If your servo is DC you can probably use a geckodrive (inexpensive).
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15 Jul 2016 14:29 #77496
by bodhi_94
Replied by bodhi_94 on topic Replace a Servo Driver with Stepper Driver
But I have a stepper motor and Its driver... All i want is edit my configurations to work with both servo and stepper motors
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15 Jul 2016 14:32 #77497
by BigJohnT
Replied by BigJohnT on topic Replace a Servo Driver with Stepper Driver
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15 Jul 2016 14:40 #77498
by bodhi_94
Replied by bodhi_94 on topic Replace a Servo Driver with Stepper Driver
ini file is configured to control servo motors.. It is attached with the topic.. Can you please tell me what changes could be done to drive a stepper driver.. . ?
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- Todd Zuercher
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16 Jul 2016 03:24 - 16 Jul 2016 03:25 #77540
by Todd Zuercher
Replied by Todd Zuercher on topic Replace a Servo Driver with Stepper Driver
Actually if anyone had taken the time to look at your config files they would have seen that you were using step/dir servos.
So to change to a step motor you should not have to change anything other than possibly your scaling, velocity and acceleration rates to accommodate the difference in performance from your old servo to your stepper. (Oh and probably step timing settings)
However it is possible the stepper may not be capable of acceptable performance for your system, but if it can it should be a very simple swap (mostly just the physical stuff.)
So to change to a step motor you should not have to change anything other than possibly your scaling, velocity and acceleration rates to accommodate the difference in performance from your old servo to your stepper. (Oh and probably step timing settings)
However it is possible the stepper may not be capable of acceptable performance for your system, but if it can it should be a very simple swap (mostly just the physical stuff.)
Last edit: 16 Jul 2016 03:25 by Todd Zuercher.
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16 Jul 2016 16:43 #77546
by BigJohnT
Replied by BigJohnT on topic Replace a Servo Driver with Stepper Driver
I did look at the configs but assuming velocity servo I completely missed that it was step and direction.
JT
JT
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