Traub Bosch cc100 retrofit

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31 Jul 2014 17:40 #49338 by aventtini
How do you set it un for 7i77 on the hal file?

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31 Jul 2014 20:06 #49344 by PCW
Replied by PCW on topic Traub Bosch cc100 retrofit
Not sure what you mean by "got the SW out"

If you mean it moves before linuxcnc has started, this indicates that you dont have the drive enables working

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31 Jul 2014 20:13 #49345 by aventtini
I got the analog signals out of the 7i77 and let only the encoders . I sart the machine and enable the servos from button not linux . Then whit the with no signal on the analog wires because they are disconected from any electronics , the moters are moving slow like 0.5mm per second . "drive enables working " means that the loop of the system is not complete . Every led on the drives are green and on like the system was ok.

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01 Aug 2014 01:45 #49362 by PCW
Replied by PCW on topic Traub Bosch cc100 retrofit
It is completely _natural_ for the drives to creep when the drives are enabled
(drive enable signal is asserted) but the PID loop is not closed.

I looks like you are enabling the drives with the old control logic
this is not safe when linuxcnc is in control because It will not stop/disable the drives
on a following error and can run full speed into the machine
stops or anyone/anything in the way.

PID loop closed means that the PID loop has at least some P term and
the analog outputs are working and are connected to the drives and drives are responding to the
difference in Linuxcncs commanded position and the actual position read from the encoders

Steps you need to do:

1. Get encoders working, scaled right and in the right directions

2. Get drive enables controlled by linuxcnc

3. Set per axis following error wide enough to allow tuning (say 20 mm)

4. Verify feedback direction (expect runaways) you may have to change the sign of the analog outputs

5. Tune PID

This is a short guide to velocity mode servo system tuning:

gnipsel.com/linuxcnc/tuning/servo.html
The following user(s) said Thank You: Zahnrad Kopf

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01 Aug 2014 14:33 #49379 by aventtini
hello agen , now i understand what my friend is sayng . The Pnconf dont suport this 7i77 and he made the Hal file manualy . He dos not know on this 7i77 the comands to set this offset voltage . After we set up this offset he can tune the axis .

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01 Aug 2014 22:31 #49405 by PCW
Replied by PCW on topic Traub Bosch cc100 retrofit
The axis creep when servos are enabled but PID loop is not closed is _NORMAL_

If you want it can be fixed by adjusting your drives but this is a very minor and
unimportant adjustment

_MUCH_ more important for safety and actually getting the machine
to run is going through the steps I outlined above

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14 Aug 2014 16:32 #49848 by aventtini
still no succes , there is any one from Bulgaria that can come and setu up the machine or even turkish?

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14 Aug 2014 16:48 #49849 by aventtini
or if there is anyone that can make work via teamviewer i will pay the rate for the settings, Every wire is conected just to set up . No tool changer for the moment.

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14 Aug 2014 17:01 #49850 by cncbasher
what connections are done , and what configuration do you allready have working ? post you config folder as an attachment tar file would help
let us see the current position and what needs to be done etc

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14 Aug 2014 18:59 #49858 by aventtini
this is my skype iD lasertech2009 , i can give you access to machine pc

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