Trying to set up position control mode
- jblanscett
- Offline
- Junior Member
-
Less
More
- Posts: 24
- Thank you received: 2
05 Mar 2026 18:45 #343914
by jblanscett
Replied by jblanscett on topic Trying to set up position control mode
DRO updates to the inputed position about a second after .1 inches is inputted and the motor continues after that. The DRO doesn't update again until another input is entered.
Please Log in or Create an account to join the conversation.
- PCW
-
- Offline
- Moderator
-
Less
More
- Posts: 17843
- Thank you received: 5221
05 Mar 2026 18:59 #343915
by PCW
Replied by PCW on topic Trying to set up position control mode
OK so that may still be an electrical/wiring issue
(if the DRO does not move but the motors move)
(if the DRO does not move but the motors move)
Please Log in or Create an account to join the conversation.
- jblanscett
- Offline
- Junior Member
-
Less
More
- Posts: 24
- Thank you received: 2
05 Mar 2026 19:18 #343916
by jblanscett
Replied by jblanscett on topic Trying to set up position control mode
Okay, is there a way to verify that it is an electrical/wiring issue?
Please Log in or Create an account to join the conversation.
- PCW
-
- Offline
- Moderator
-
Less
More
- Posts: 17843
- Thank you received: 5221
05 Mar 2026 19:56 - 05 Mar 2026 20:58 #343917
by PCW
Replied by PCW on topic Trying to set up position control mode
Might look at the step pulse train with an oscilloscope.
Also is it possible the servo drive is not set to position mode?
Also is it possible the servo drive is not set to position mode?
Last edit: 05 Mar 2026 20:58 by PCW.
Please Log in or Create an account to join the conversation.
- jblanscett
- Offline
- Junior Member
-
Less
More
- Posts: 24
- Thank you received: 2
06 Mar 2026 13:12 #343940
by jblanscett
Replied by jblanscett on topic Trying to set up position control mode
What should I be looking at with the oscilloscope? I have checked that our signal looks like it is supposed to and when I press the continuous jog, it stops about when I release the continuous jog and the motor keeps spinning.
We went through a back and forth with Yaskawa before this to confirm it is in position mode, because that was our first thought. What I don't really understand is how the 7i95 board knows it is supposed to generate position based step generation when we are sending it velocity commands?
We went through a back and forth with Yaskawa before this to confirm it is in position mode, because that was our first thought. What I don't really understand is how the 7i95 board knows it is supposed to generate position based step generation when we are sending it velocity commands?
Please Log in or Create an account to join the conversation.
- PCW
-
- Offline
- Moderator
-
Less
More
- Posts: 17843
- Thank you received: 5221
06 Mar 2026 14:29 #343941
by PCW
Replied by PCW on topic Trying to set up position control mode
If the motor keeps turning without step pulses, this is a root of the problem
and there's nothing on the LinuxCNC/7I95 side that can fix this.
It really sounds like the drive is in velocity mode.
and there's nothing on the LinuxCNC/7I95 side that can fix this.
It really sounds like the drive is in velocity mode.
Please Log in or Create an account to join the conversation.
- jblanscett
- Offline
- Junior Member
-
Less
More
- Posts: 24
- Thank you received: 2
06 Mar 2026 18:47 #343949
by jblanscett
Replied by jblanscett on topic Trying to set up position control mode
Okay, we will try to confirm that it is our servopack.
Does anybody have experience with position control mode on the SGDH-10AE or another Yaskawa sigma II series servopack?
Does anybody have experience with position control mode on the SGDH-10AE or another Yaskawa sigma II series servopack?
Please Log in or Create an account to join the conversation.
Time to create page: 0.183 seconds