Orientation position problem after run Gcode

tommylight wrote:

Try this:
Machine powered and enabled
Spindle off
watch the spindle encoder count in hal show
make a line on the spindle to have a 0 reference point where the encoder shows 0
turn spindle by hand 10 times
see the encoder count, it is 10 times bigger?
-
Check the spindle encoder scaling, if you have a 1024 PPR encoder, probably scale should be 4096.
In this case after 10 turns you should see 40960
If not, there are two possibilities, scaling is wrong or encoder is faulty/miss wired/not counting properly/does not have quadrature outputs/voltage to low/ outputs not able to swing high enough to register/

I try done 
10 rev move with hand  and check in hallshow ,The number about 4096*10=  40,960   +- little (with hand stop position)

I try more..
50 rev with hand yes it's 4096*50 = 204,800 +- little (with hand stop position)

I pretty sure my encoder correct on 1024ppr and 4096 per 1revolution.

If not, there are two possibilities, scaling is wrong or encoder is faulty/miss wired/not counting properly/does not have quadrature outputs/voltage to low/ outputs not able to swing high enough to register/


I ever try change jumper from differential to quadrature and use this solution from MR.PCW
Result is 

When M3 s3000 it's show  "hm2_7i96s.0: Encoder 5 : quadrature count error"

 

 

 

Also note that spindle orientation uses an index signal that recurs once per revolution. I don't know if you are getting that from the sensor as well but if that signal looks like the A and B count signals on your scope then I don't think there is not much hope for proper spindle orientation.

@abdulasis12

I noticed a similar problem with my setup. High speed spindle with encoder (36K rpm). Position would be accurate until I reach a certain rpm - 18000rpm in my case.

In your situation, you might be able to fix it (EMI?). In my case I wrote a simple COMP to reset the spindle Index = 1 or high after I issue an M3 command. 

The COMP is waiting for an M3 (the spindle to reach an RPM range where the encoder signal is stable but above your tapping speed. 

Hope this makes sense and it might be food for thought. 

sets spindle-sync          1          
net  spindle-sync            enable-spindle-index.out => spindle.0.index-enable => hm2_7i95.0.encoder.04.index-enable    
net spindle-brake-on      spindle.0.brake                  => enable-spindle-index.brake-on







 

0x2102 wrote:

@abdulasis12

I noticed a similar problem with my setup. High speed spindle with encoder (36K rpm). Position would be accurate until I reach a certain rpm - 18000rpm in my case.

In your situation, you might be able to fix it (EMI?). In my case I wrote a simple COMP to reset the spindle Index = 1 or high after I issue an M3 command. 

The COMP is waiting for an M3 (the spindle to reach an RPM range where the encoder signal is stable but above your tapping speed. 

Hope this makes sense and it might be food for thought. 

sets spindle-sync          1          
net  spindle-sync            enable-spindle-index.out => spindle.0.index-enable => hm2_7i95.0.encoder.04.index-enable    
net spindle-brake-on      spindle.0.brake                  => enable-spindle-index.brake-on

 

Hi MR.  0x2102
I think I will try your solution, Now I have a problem .

I put your hall  and change to my hm2

sets spindle-sync 1          
net  spindle-sync enable-spindle-index.out => spindle.0.index-enable => hm2_7i96s.0.encoder.05.index-enable    
net spindle-brake-on spindle.0.brake => enable-spindle-index.brake-on

Save and run linuxcnc, Show error   signal 'spindle-syn not found '

Please give me some advice.

 

1. Have you installed the component?
$ sudo halcompile --install spindle_index_enable.comp

(don't use 'sudo' if you are on a rip installation ie if you have compiled linuxcnc on your computer)

2. There also is another error 'duplicate component name iocontrol' not sure where that comes from.

Aciera wrote:

1. Have you installed the component?
$ sudo halcompile --install spindle_index_enable.comp

(don't use 'sudo' if you are on a rip installation ie if you have compiled linuxcnc on your computer)

2. There also is another error 'duplicate component name iocontrol' not sure where that comes from.

Thank you MR.Aciera
Now I install   sudo halcompile --install spindle_index_enable.comp   Done (must sudo can work).


Now wait MR.  0x2102    for advice about  signal 'spindle-syn not found '

 

Also, don't forget to 'loadrt ... ' and 'addf ...' the new component in your hal file.

Aciera wrote:

Also, don't forget to 'loadrt ... ' and 'addf ...' the new component in your hal file.

Ahh I don't know this step , Thank you ^^" .

loadrt spindle_index_enable
addf spindle_index_enable          servo-thread

Right ?

Asis,

I think you would need (note the '.0' in the addf line):

loadrt spindle_index_enable
addf spindle_index_enable.0 servo-thread

Thank you MR. Aciera     , Will try tomorow