Machsupport Forum
Third party software and hardware support forums. => CS-Lab => Topic started by: ziaddoth on December 10, 2015, 05:53:02 AM
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Gents,
I'm replacing NC controller of Plasma Pipe cutting machine with CSMIO/IP-S, the issue is I can't make the motors moving!
My Panasonic Servo drives Model :
MCDHT3520 0.75KW
MEDHT7364 2KW
Mach3 configuration has been sat, I have motor shaft lock, I have, the servo drives and motors were running fine with my old NC, the Servo display [r 0], I have replaced the STEP/DIR cable, even I m getting [SERVO READY] output signal from the drive to CSMIO controller, but still I can't JOG the axis!
It seems I have a problem with setting the correct parameters to have the Servo drive communicate with CSMIO/IP-S.
here is the table of the Panasonic servo drive before and after the changes I have made but still I can’t move the axis:
[Class 0] Basic Setting
Before After
Pr0.00 1 1
Pr0.01 0 0
Pr0.02 1 1
Pr0.03 13 13
Pr0.04 204 204
Pr0.05 0 1
Pr0.06 0 0
Pr0.07 3 1
Pr0.08 0 0
Pr0.09 31566 31566
Pr0.10 50 50
Pr0.11 2500 2500
Pr0.12 0 0
Pr0.13 300 300
Pr0.14 000000 000000
Pr0.15 1 1
Pr0.16 0 0
Pr0.17 0 0
Please keep In mind this servo drive was used with NC control machine with touch screen, so the default Parameters were sat for NC type.
Recently I had a similar problem while retrofitting my water jet machine with also CSMIO/IP-S + DELTA servo, and thanks to TPS I have found the correct parameters [P1-00=1042], and abracadabra my project has been saved by a knight!
You can view and download Panasonic Servo drive manual from Panasonic web site
https://industrial.panasonic.com/content/data/MT/PDF/manual/en/acs/minas-a5-2_manu_e.pdf
I hope someone can point out where I'm doing wrong, and what parameters, configuration I should use, since I have spent few days scratching my head & waiting for CS lab!
If more info required pls let me know.
I sincerely appreciate anyone's time and effort to help me overcome this problem.
Regards,
Ziad
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Gents,
Info added:
Please refer to page 4.4 on the Panasonic Servo drive manual [Details of Parameter]
to review the Servo Parameters details.
Thanks.
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Hi Ziad,
only had time for a quick look.
i think
Pr0.06 --> 1
Pr0.07 --> 3
or
Pr0.06 --> 0
Pr0.07 --> 3
should be ok.
TPS
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Thanks TBS for the reply, I do appreciate !
I shell try these parameters tomorrow and give the feedback.
However, there are few updates,
last night as disparate act, I have created a new Mach3 profile, and surprisingly the Servo Drives somehow worked for few seconds with the following issues:
1-Servo motor was moving way too fast.
2-Servo motor was moving in one direction only regardless what command sent by Mach3 (X+, X-).
3-Servo motor Error 160 (Over-load Protection), and / or Error 260 (Over-Speed Protection) occurred shortly after RESET the Mach3 or JOG the motor.
Please refer to the manual Page 6.4 [When in Trouble] for details of error code.
TPS, does the above make sense to you and back up your suggested parameters?
Regards,
Z.
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TPS, does the above make sense to you and back up your suggested parameters?
not realy.
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Just had a quick look but Pr0.08, 0.09 and 0.10 caught my eye
Not sure why it is set that way but from first looks I would set Pr0.08 as the count of your encoders, possibly 2500?
That would I think disable the electronic gearing which I presume you are not really wanting?
Hood
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TPS, HOOD, my saviors!!
Your comments launched my machine to the moon; D
Added few photos of my machine for motivation.
Update:
@TPS,
1- your parameters worked! Super.. Super!
Pr0.06 --> 1
Pr0.07 --> 3
2- As for the Error 160 (Over-load Protection), and Error 260 (Over-Speed Protection), I found out that due to a diagram mistake I disabled the wrong servo motor break relay!
Now, problem solved.
@Hood,
3-I've used your parameters
Pr0.08 --> 2500
The axis speed movement improved, check out the attached photo, but still the axis speed slider almost at the bottom, is that normal? I even lowered the speed down to 2000 mm/min.
Important @TPS + Hood,
4- I have used [set step per unit] function of mach3 setting to find out the step/dir for both X and Z axis, now I have no Idea how to find step/dir and converted to degrees for the rotary axis A!!
Is there any way similar to [set step per unit] function of mach3 setting to calibrate my rotary (A) axis?
Pls check the attached photo of the gear name plate where the rotary axis (A) servo motor connected, can you see any useful info would help in axis (A) calibration?
will send the photos next.
Thanks a millions mates.
Z.
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Photo 1/4
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Nice looking machine :)
Regarding the rotary axis, you simply have to take into account any gearing and the encoders resolution then divide by 360 to get the steps per degree.
example
Motor encoder 2500 line (10,00 pulses per rev)
Gearing of 2:1
10,000 x 2 /360 = 55.5555555556 steps per degree.
Hood
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photo 2/4
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Thanks Hood,
since days and I'm not able to upload all the photos! :-[
I have sent the gear name plate, can you find any useful Info that would help with the calculation?
How to get the motor Encoder value? is it written on the motor name plate, or I need to look in the motor manual (which I don't have) ?
UPDATE:
here what I have done to attempt calibrating my rotary "A" axis:
1- I measured the outer circumference of my chuck (1975 mm) and I used Mach3 (Set Steps Per Unit) function at “Setting” tab try and error until I got it somehow“ calibrated”!,
Calibrated means If I used MDI : G1A1975F2000 my chuck would make 1 complete revolution!
is that even legal?
2- Now, do I need to keep he rotary "A" axis as is or I have to converted into "Rotation axis" by doing the following :
a- Config > Tool Path > Rotations > check the A-Rotations Enabled, and check the "Use Radius for Feedrate."
b- Settings" menu > in the upper right corner is for "Rotation Radius." Since you checked the "Use Radius for Feedrate" in the Toolpath menu, here is where the part Radius is entered to make the axis's move in sync. Enter some general value, like 2.00 if you are using "Inches". If you are doing a real job, you should enter the actual part radius. (is this a must every time I make a new pipe cutting)?
c- Under "Config", open the "General Config..." page. On the left side of page is a box "Angular Properties." Check "A Axis is Angular."
How the above setting would conflict or support the SheetCam Mach3 post processor “unitsPerRev=360” parameters.
4- Do I need to install a homing sensor for the rotary Axis "A" ? If not so do I have to Zero the axis form the DRO every time I start cutting?
Would appreciate any comments.
Z
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@HOOD, TPS, and interested readers,
Thank you guys for the little and yet effective power push you provided to my project
The machine up and running now :)
I have been through rough road till I reached here, with setting up the Panasonic with my CSMIO/IP-S, setting up the rotary plugs in provided by SheetCam, editing the post process, etc.
OF course the machine is not perfect, but it is suite my application.
I have a problem with X and A axis federate during the cutting, also I have a slight problem with cutting circle due to the different of speed and acceleration between X and A, since my X axis is almost double speed than my A rotary, despite the setting at Axis configuration at Mach3.
Anyway, I have to move on to the next project, retrofit 6 Axis waterjet machine with CSMIO/IP-A. it would be quite challenging !
here is a photo of the machine while running.
Happy New Year for all.
Z.
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Looks good :)
Regarding the A Axis, have you set the rotational diameter in Mach correctly? The axis should be working in sync no matter whether linear or rotary.
Hood
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HI HOOD,
Rotational diameter or radius !!! Hmmmm
Here are the 2 steps I did regarding the Rotary axis A:
1- set up the rotary axis A:
as per the quote
Hi Mike:
There a couple of settings you need to enable.
The steps per degree should be a simple calculation based upon the ratio of the rotary table, the reduction ratio from motor to rotary table input shaft (if any), and the steps per revolution of the motor, which is usually 200 ppr for stepping motors. Also, if you are using micro-steps, this must be accounted for.
You did not say what the rotary table ratio was, and if there is any motor reduction between motor and rotary input pinion gear.
For the rotary table to act like a normal axis, go to the "config" menu, and scroll down to the heading "Toolpath."
The upper right box is labeled "Rotations." Check the axis of rotation, usually the X axis; check the A-Rotations Enabled, and check the "Use Radius for Feedrate."
Click OK, and scroll down to the bottom of the config menu, and click on "Save Settings."
Now open the "Settings" menu. Check the appropriate boxes for Axis you will be using. The X,Y, Z, and A should be black, and the B,C lit green.
The heading in the upper right corner is for "Rotation Radius." Since you checked the "Use Radius for Feedrate" in the Toolpath menu, here is where the part Radius is entered to make the axis's move in sync. Enter some general value, like 2.00 if you are using "Inches". If you are doing a real job, you should enter the actual part radius.
As before, go to the config menu and "Save your new settings.
Under "Config", open the "General Config..." page. On the left side of page is a box "Angular Properties." Check "A Axis is Angular." Click OK, and go to bottom of menu and "Save Settings."
Now close Mach3, and restart. Your new settings should all be enabled, and the rotary axis will act like another axis.
John
2- at Mach3 Setting menu :
Rotation Radius : A: +110
since my pipe diameter is 220 mm!
or do you mean I should enter my chuck diameter ?
in motor tuning my A axis velocity is double than X axis but still while running the G-CODE the axis velocity are vise versa :(
HOOD, PLS hint!
Thanks.
Z
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Where is the Z zero set in your code? If it is the centre of the pipe the A Radius should be set to zero I think.
Hood