Fixing Smart serial errors.

More
08 Nov 2018 07:50 #120238 by cmorley
I am running a STBML drive using a 7i92/7i76 combo.
When running the motor fast the driv edrops out because of SS errors.

The computer has latency of about 50000.
The cable is about feet long.

Rene has suggested that i should check power and that some daugther boards need another capacitor added.
I am asking for some process of how to track done what the problem is and how to fix it.
This is a test rig at the moment, so is pretty easy to test/change things.
Once I figure it all out, i will be putting a STMBL on big lathe.

Thanks
Chris M
More
08 Nov 2018 09:43 #120243 by tommylight
I have 3 Granite Devices Argon drives on a Hurco BMC20 that use something similar to STBML, they also produce huge amounts of interference as soon as enabled, disconnecting the connection to the computer used to program them. Even with all the EMI filters and ferrite cores on the motor wires sometimes it looses connection.
Worth noting is that the Linuxcnc computer is wired to a 7i92 through a cheap 10 meter UTP cable and it never lost connection. This is a testament to the quality of Mesa products.
Ferrite cores on the motor wires at the drive, ferrite core on the comm cable, and a good EMI filter does the job.
Regards,
More
08 Nov 2018 09:45 #120244 by PCW
Replied by PCW on topic Fixing Smart serial errors.
What actual sserial errors do you get?
More
08 Nov 2018 20:51 #120291 by cmorley
Replied by cmorley on topic Fixing Smart serial errors.
Sorry i should know better :)

hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.stbl.0.1 local error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.stbl.0.1 local error = (7) Too many errors
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.stbl.0.1 local error = (3) Timeout
hm2/hm2_7i92.0: Smart Serial Comms Error: There have been more than 1 errors in 10 thread executions at least 200 times. See other error messages for details.
hm2/hm2_7i92.0: ***Smart Serial Port 0 will be stopped***
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.stbl.0.1 local error = (13) Communication error

hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.stbl.0.1 local error = (7) Too many errors

hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.stbl.0.1 local error = (3) Timeout

hm2/hm2_7i92.0: Smart Serial Comms Error: There have been more than 1 errors in 10 thread executions at least 200 times. See other error messages for details.

hm2/hm2_7i92.0: ***Smart Serial Port 0 will be stopped***


I am using a little bit older master branch.

Chris M
More
08 Nov 2018 20:54 #120292 by cmorley
Replied by cmorley on topic Fixing Smart serial errors.
hmm looks like about a year old master

Chris M
More
08 Nov 2018 21:52 - 08 Nov 2018 21:52 #120293 by PCW
Replied by PCW on topic Fixing Smart serial errors.
Looks like a bad noise issue. I would first update the 7I92 firmware to make sure it has the UART noise filter feature, if that doesn't help, I would try tommylight's suggestions.
Last edit: 08 Nov 2018 21:52 by PCW.
The following user(s) said Thank You: tommylight
More
09 Nov 2018 01:56 #120300 by cmorley
Replied by cmorley on topic Fixing Smart serial errors.
Ok I'll look into updating the 7i92 - I might have already at one point quite awhile ago.
I'll add that if i run the motor under 800 rpm it doesn't trip but over that it does.
Thank you for the ideas I will update when I get a chance.

Chris M
Moderators: PCWjmelson
Time to create page: 0.071 seconds
Powered by Kunena Forum