7I97T joint following error
- Tinker
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21 Feb 2025 11:58 #322198
by Tinker
7I97T joint following error was created by Tinker
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.
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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.
Setting this parameter to 0 means that there is no tolerance between the theoretical and actual movement.
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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.
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
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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.
EDIT:
Did not see the reply from PCW.
Thank you PCW.
Last edit: 21 Feb 2025 15:00 by tommylight.
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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?
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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.
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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.
I would set the deadzone to 0 for setup and tuning.
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21 Feb 2025 20:18 #322223
by Tinker
Replied by Tinker on topic 7I97T joint following error
ok, ill give that a try
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21 Feb 2025 20:23 #322224
by Tinker
Replied by Tinker on topic 7I97T joint following error
Still the same..
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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?
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