encoder errors, yaskawa paired axis. < resolved >

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donm
Posts: 6
Joined: Mon May 06, 2019 1:05 pm
Acorn CNC Controller: No
Allin1DC CNC Controller: No
Oak CNC controller: Yes
CNC Control System Serial Number: XHGBFHDABH
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

encoder errors, yaskawa paired axis. < resolved >

Post by donm »

just set up a plc12 with 4 sigma 5 1kw drives and motors.
i got the drives all powered up and tuned with no problems
i have axis 1 and 4 paired and 4 is running opposite direction as these 2 motors are on either side of a gantry.
in jog i can jog the X axis and the 4th axis follows a long and turns in opposite direction but the 4th axis runs faster than the x and i get positional errors.
the other 2 axis will run for awhile then give positional errors.
i did not due an auto tune because the information from the site says you dont need to do it because it is done using the sigma software. and i cant tune paired axis. report is attached.
is there more info for manual tuning i should look at.
Attachments
report_0320190765_2019-06-03_11-53-42.zip
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cncsnw
Community Expert
Posts: 4578
Joined: Wed Mar 24, 2010 5:48 pm

Re: encoder errors

Post by cncsnw »

Try reversing the direction of the fourth servo in the amplifier, using the SigmaWin software (so that you can change "Dir Rev" in the Centroid configuration back to 'N').

If you still have issues, post the latest .usr files that you saved from the SigmaWin software.


donm
Posts: 6
Joined: Mon May 06, 2019 1:05 pm
Acorn CNC Controller: No
Allin1DC CNC Controller: No
Oak CNC controller: Yes
CNC Control System Serial Number: XHGBFHDABH
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: encoder errors

Post by donm »

i will try that
i may be setting it up using the wrong format
i set it up using TB267 should i have used TB252 neither one says why the set it up that way


cncsnw
Community Expert
Posts: 4578
Joined: Wed Mar 24, 2010 5:48 pm

Re: encoder errors

Post by cncsnw »

Use TB252 if you want to run your drives in analog velocity mode.

Use TB267 if you want to run your drives in pulse-train position mode.

Either way will work. Analog velocity mode takes more work to get the PID tuning dialed in.

Neither tech bulletin addresses reversing servo direction in the drive, but I think that is a simple selection as you are going through the Setup Wizard in the SigmaWin software.


donm
Posts: 6
Joined: Mon May 06, 2019 1:05 pm
Acorn CNC Controller: No
Allin1DC CNC Controller: No
Oak CNC controller: Yes
CNC Control System Serial Number: XHGBFHDABH
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: encoder errors

Post by donm »

as an update to the errors. i could not find out what i had done wrong so i reloaded the plc program and put the drives back to factory settings checked all my connections and started over and every thing worked fine???????
my x axis is paired with the 4th. i did the reversal of my 4th axis in the sigma soft ware not the centroid.
one thing that i did do different is i never even entered the tuning section of the centroid. but right now my 4th axis is lagging the x axis. were would be the best place to correct this sigma+? or centriod, the lag is about 4 deg after about 20 turns


donm
Posts: 6
Joined: Mon May 06, 2019 1:05 pm
Acorn CNC Controller: No
Allin1DC CNC Controller: No
Oak CNC controller: Yes
CNC Control System Serial Number: XHGBFHDABH
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: encoder errors

Post by donm »

resolved
i talked to yaskawa and they asked me to switch the motor with a motor that was not a paired axis. it worked. they think the drive and motor my have a factory setting that was slightly of of tune. the motor did not seem to have any issues with the other drive. if it wasn't :D for the fact i put that motor and drive to a paired axis i probably would not have noticed it.


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