7I97T joint following error

More
21 Feb 2025 11:58 #322198 by Tinker
7I97T joint following error was created by Tinker
 

File Attachment:

File Name: mill.ini
File Size:3 KB
 

File Attachment:

File Name: main.hal
File Size:8 KB
Not sure if I'm posting this in the right place but I cant get past the joint following error to tune my -10/10 volt servos. I've reloaded everything several times with the same result... When I enable the drives the servos start drifting for about .001/.002 and then the following error. I am THE most computer illiterate person on earth and have no idea how to fix this thing. I've been trying for the last couple of months to get it going but can't get past this. With the help from this forum I've been able to get the network, mesa flash, mesa ct and card wiring complete but am stuck on this one.  
Attachments:

Please Log in or Create an account to join the conversation.

More
21 Feb 2025 13:13 #322201 by MTTI
Replied by MTTI on topic 7I97T joint following error
I'm not an expert, but I think DEADBAND must be greater than 0.
Setting this parameter to 0 means that there is no tolerance between the theoretical and actual movement.

Please Log in or Create an account to join the conversation.

More
21 Feb 2025 14:48 #322204 by PCW
Replied by PCW on topic 7I97T joint following error
Here's an analog tuning tutorial for the 7I77 but applies to the 7I97T as well:

forum.linuxcnc.org/10-advanced-configura...to-example-mesa-7i77

To start with you need to increase the following error limits so you can see whats going on.
You may not even have the feedback in the correct direction, but with a 0.001 ferror limit
before tuning you will always get a instant following error for any motion command.
The following user(s) said Thank You: tommylight

Please Log in or Create an account to join the conversation.

  • tommylight
  • tommylight's Avatar
  • Away
  • Moderator
  • Moderator
More
21 Feb 2025 14:59 - 21 Feb 2025 15:00 #322206 by tommylight
Replied by tommylight on topic 7I97T joint following error
forum.linuxcnc.org/10-advanced-configura...to-example-mesa-7i77

EDIT:
Did not see the reply from PCW.
Thank you PCW.
Last edit: 21 Feb 2025 15:00 by tommylight.

Please Log in or Create an account to join the conversation.

More
21 Feb 2025 19:25 #322219 by Tinker
Replied by Tinker on topic 7I97T joint following error
What would be a good base number to enter for the dead band and following error?

Please Log in or Create an account to join the conversation.

More
21 Feb 2025 19:44 #322221 by Tinker
Replied by Tinker on topic 7I97T joint following error
So I increased dead band to 1 and following error to 1 and still get the same results. I used my power supply to run the drives and they work perfectly when I force a +/- voltage.

Please Log in or Create an account to join the conversation.

More
21 Feb 2025 20:00 #322222 by PCW
Replied by PCW on topic 7I97T joint following error
A 1 deadzone and 1 ferror limit pretty much guarantees a following error.

I would set the deadzone to 0 for setup and tuning.

Please Log in or Create an account to join the conversation.

More
21 Feb 2025 20:18 #322223 by Tinker
Replied by Tinker on topic 7I97T joint following error
ok, ill give that a try

Please Log in or Create an account to join the conversation.

More
21 Feb 2025 20:23 #322224 by Tinker
Replied by Tinker on topic 7I97T joint following error
Still the same..

Please Log in or Create an account to join the conversation.

More
21 Feb 2025 20:24 #322226 by Tinker
Replied by Tinker on topic 7I97T joint following error
I have no output to my drives, i 'm not sure why?

Please Log in or Create an account to join the conversation.

Time to create page: 0.081 seconds
Powered by Kunena Forum