"Z axis Max Rate Exceeded" error UPDATE: Now "438 Spindle slave position error"
Moderator: cnckeith
-
- Posts: 9914
- Joined: Tue Mar 28, 2017 12:01 pm
- Acorn CNC Controller: Yes
- Allin1DC CNC Controller: Yes
- Oak CNC controller: No
- CNC Control System Serial Number: none
- DC3IOB: No
- CNC12: Yes
- CNC11: Yes
- CPU10 or CPU7: Yes
- Location: Mesa, AZ
"Z axis Max Rate Exceeded" error UPDATE: Now "438 Spindle slave position error"
Friends machine.
Machine Specifics:
3 Axis CNC Knee Mill
Acorn driving closed loop DC Brushless servos
Durapulse GS3 VFD Low RPM tuned to within 20rpm of commanded speed.
100 Renco Line Driver/Differential Encoder its what he had. We thought we would give it a go.
CNC12 P34 = -400.00000 - Spindle Encoder Counts/Revolution (Verified 400 counts to one turn of the spindle on the PID screen)
Rigid tapping settings are all pretty much the default settings.
Issue:
When trying to run a tapping cycle created with Intercon
When it gets to the G84 X0.0 Y0.0 Q0.313 Z-0.9 R0.1 P0.10
Line, the control faults with a "Z Axis Max Rate Exceeded" and a 330 Canned Cycle Error: Normally, yes, we would run a 1000line encoder. Is the "Z Axis Max Rate Exceeded" error a direct result of the low encoder count or something else?
Thanks in advance.
Marty
Machine Specifics:
3 Axis CNC Knee Mill
Acorn driving closed loop DC Brushless servos
Durapulse GS3 VFD Low RPM tuned to within 20rpm of commanded speed.
100 Renco Line Driver/Differential Encoder its what he had. We thought we would give it a go.
CNC12 P34 = -400.00000 - Spindle Encoder Counts/Revolution (Verified 400 counts to one turn of the spindle on the PID screen)
Rigid tapping settings are all pretty much the default settings.
Issue:
When trying to run a tapping cycle created with Intercon
When it gets to the G84 X0.0 Y0.0 Q0.313 Z-0.9 R0.1 P0.10
Line, the control faults with a "Z Axis Max Rate Exceeded" and a 330 Canned Cycle Error: Normally, yes, we would run a 1000line encoder. Is the "Z Axis Max Rate Exceeded" error a direct result of the low encoder count or something else?
Thanks in advance.
Marty
- Attachments
-
- report_3403DE6533A0-1120192697_2021-05-30_13-12-13.zip
- (770.4 KiB) Downloaded 83 times
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
We can't "SEE" what you see...
Mesa, AZ
-
- Posts: 669
- Joined: Wed Nov 15, 2017 8:25 pm
- Acorn CNC Controller: Yes
- Allin1DC CNC Controller: No
- Oak CNC controller: No
- CNC Control System Serial Number: none
- DC3IOB: No
- CNC11: No
- CPU10 or CPU7: No
- Location: Springfield, MO. USA
- Contact:
Re: "Z axis Max Rate Exceeded" error
Z axis max rate is set to 20 but not sure what the thread pitch is that you are cutting. Maybe 20 is too low?
Dave C.
Dave C.
Grizzly G0678 Mill ,CNC conversion with Acorn. G4004G Lathe, Mach 3 conversion to Acorn.
-
- Posts: 7306
- Joined: Wed Mar 03, 2010 4:23 pm
- Acorn CNC Controller: Yes
- Allin1DC CNC Controller: Yes
- Oak CNC controller: Yes
- CNC Control System Serial Number: none
- DC3IOB: Yes
- CNC11: Yes
- CPU10 or CPU7: Yes
- Contact:
Re: "Z axis Max Rate Exceeded" error
the programmed pitch and rpm determine the Z axis speed that the machine needs to move, the error message is saying the the machine configuration Z axis rate is lower than the programmed pitch and rpm need for the tap to move up and down the hole without breaking it.
so pitch could be wrong, RPM too high or Z max rate too low. and has nothing to do with the encoder counts.
so pitch could be wrong, RPM too high or Z max rate too low. and has nothing to do with the encoder counts.
Need support? READ THIS POST first. http://centroidcncforum.com/viewtopic.php?f=60&t=1043
All Acorn Documentation is located here: viewtopic.php?f=60&t=3397
Answers to common questions: viewforum.php?f=63
and here viewforum.php?f=61
Gear we use but don't sell. https://www.centroidcnc.com/centroid_di ... _gear.html
All Acorn Documentation is located here: viewtopic.php?f=60&t=3397
Answers to common questions: viewforum.php?f=63
and here viewforum.php?f=61
Gear we use but don't sell. https://www.centroidcnc.com/centroid_di ... _gear.html
-
- Posts: 9914
- Joined: Tue Mar 28, 2017 12:01 pm
- Acorn CNC Controller: Yes
- Allin1DC CNC Controller: Yes
- Oak CNC controller: No
- CNC Control System Serial Number: none
- DC3IOB: No
- CNC12: Yes
- CNC11: Yes
- CPU10 or CPU7: Yes
- Location: Mesa, AZ
Re: "Z axis Max Rate Exceeded" error
AH! (Slaps self on the side of head!)cnckeith wrote: ↑Sun May 30, 2021 8:08 pm the programmed pitch and rpm determine the Z axis speed that the machine needs to move, the error message is saying the the machine configuration Z axis rate is lower than the programmed pitch and rpm need for the tap to move up and down the hole without breaking it.
so pitch could be wrong, RPM too high or Z max rate too low. and has nothing to do with the encoder counts.
24TPI thread
Axis Slow Jog Fast Jog Max Rate Deadstart Delta Vmax
(in/min) (in/min) (in/min) (in/min) (in/min)
1 20.0000 20.0000 75.0000 5.0000 5.0000
2 20.0000 20.0000 75.0000 5.0000 5.0000
3 10.0000 10.0000 20.0000 5.0000 5.0000
Also a couple other things don't look right now that I look at his report...will investigate further.
Thanks Dave_C & Keith!
Marty
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
We can't "SEE" what you see...
Mesa, AZ
-
- Posts: 14
- Joined: Sun Jul 15, 2018 10:43 pm
- Acorn CNC Controller: No
- Allin1DC CNC Controller: Yes
- Oak CNC controller: No
- CNC Control System Serial Number: 100247
- DC3IOB: No
- CNC12: Yes
- CNC11: No
- CPU10 or CPU7: No
Re: "Z axis Max Rate Exceeded" error
Your program feed rate is for 32 pitch, not 24. Can't help with the rest, but at 640rpm you are only moving 20ipm.
-
- Posts: 9914
- Joined: Tue Mar 28, 2017 12:01 pm
- Acorn CNC Controller: Yes
- Allin1DC CNC Controller: Yes
- Oak CNC controller: No
- CNC Control System Serial Number: none
- DC3IOB: No
- CNC12: Yes
- CNC11: Yes
- CPU10 or CPU7: Yes
- Location: Mesa, AZ
Re: "Z axis Max Rate Exceeded" error
We resolved the issue
Working on correcting the encoder counts in the Logosol drives. Then he'll fix the turns ratio. Well then bump up the max feed rates.
Working on correcting the encoder counts in the Logosol drives. Then he'll fix the turns ratio. Well then bump up the max feed rates.
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
We can't "SEE" what you see...
Mesa, AZ
-
- Posts: 9914
- Joined: Tue Mar 28, 2017 12:01 pm
- Acorn CNC Controller: Yes
- Allin1DC CNC Controller: Yes
- Oak CNC controller: No
- CNC Control System Serial Number: none
- DC3IOB: No
- CNC12: Yes
- CNC11: Yes
- CPU10 or CPU7: Yes
- Location: Mesa, AZ
Re: "Z axis Max Rate Exceeded" error UPDATE: Now "438 Spindle slave position error"
Update on this project.
Got the drives (Logosol) configured properly, and the turns ratios corrected.
Also upgraded the spindle encoder from a 400 line to a 1000 line encoder.
Rigid tapping:
We seem to be able to tap in MAX two passes ok. Tested in machinable was and thread were perfect.
But trying to do peck tapping is yielding "438 Spindle slave position error" as SOON as it starts the tapping cycle.
Has me scratching my head.
Hoping those more familiar with Rigid tapping and its settings can lend a hand.
FRESH Report attached.
Marty
Got the drives (Logosol) configured properly, and the turns ratios corrected.
Also upgraded the spindle encoder from a 400 line to a 1000 line encoder.
Rigid tapping:
We seem to be able to tap in MAX two passes ok. Tested in machinable was and thread were perfect.
But trying to do peck tapping is yielding "438 Spindle slave position error" as SOON as it starts the tapping cycle.
Has me scratching my head.
Hoping those more familiar with Rigid tapping and its settings can lend a hand.
FRESH Report attached.
Marty
- Attachments
-
- report_Beevo_2021-06-18_14-19-24.zip
- (750.51 KiB) Downloaded 73 times
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
We can't "SEE" what you see...
Mesa, AZ
-
- Posts: 669
- Joined: Wed Nov 15, 2017 8:25 pm
- Acorn CNC Controller: Yes
- Allin1DC CNC Controller: No
- Oak CNC controller: No
- CNC Control System Serial Number: none
- DC3IOB: No
- CNC11: No
- CPU10 or CPU7: No
- Location: Springfield, MO. USA
- Contact:
Re: "Z axis Max Rate Exceeded" error UPDATE: Now "438 Spindle slave position error"
Marty,
I'm not sure if this will help or not, it's been years since I set my mill up, but I had a similar issue when I tried to do rigid taping.
The way I cured my problem was to set part thread start position high enough above the part so the spindle had time to establish before it started the thread. The ridged taping cycle does not work well if you define "short" thread depths! You can do short threads by making the hole appear deeper than it really is, IE a false top location.
Dave C.
I'm not sure if this will help or not, it's been years since I set my mill up, but I had a similar issue when I tried to do rigid taping.
The way I cured my problem was to set part thread start position high enough above the part so the spindle had time to establish before it started the thread. The ridged taping cycle does not work well if you define "short" thread depths! You can do short threads by making the hole appear deeper than it really is, IE a false top location.
Dave C.
Grizzly G0678 Mill ,CNC conversion with Acorn. G4004G Lathe, Mach 3 conversion to Acorn.
-
- Posts: 9914
- Joined: Tue Mar 28, 2017 12:01 pm
- Acorn CNC Controller: Yes
- Allin1DC CNC Controller: Yes
- Oak CNC controller: No
- CNC Control System Serial Number: none
- DC3IOB: No
- CNC12: Yes
- CNC11: Yes
- CPU10 or CPU7: Yes
- Location: Mesa, AZ
Re: "Z axis Max Rate Exceeded" error UPDATE: Now "438 Spindle slave position error"
Thanks Dave. May give that a shot. Right now Intercon defaults to .1" above the part.Dave_C wrote: ↑Mon Jun 21, 2021 11:34 am Marty,
I'm not sure if this will help or not, it's been years since I set my mill up, but I had a similar issue when I tried to do rigid taping.
The way I cured my problem was to set part thread start position high enough above the part so the spindle had time to establish before it started the thread. The ridged taping cycle does not work well if you define "short" thread depths! You can do short threads by making the hole appear deeper than it really is, IE a false top location.
Dave C.
I find it odd that it will tap a full depth hole or a hole with two passes ok. But not multiple....
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
We can't "SEE" what you see...
Mesa, AZ
-
- Posts: 669
- Joined: Wed Nov 15, 2017 8:25 pm
- Acorn CNC Controller: Yes
- Allin1DC CNC Controller: No
- Oak CNC controller: No
- CNC Control System Serial Number: none
- DC3IOB: No
- CNC11: No
- CPU10 or CPU7: No
- Location: Springfield, MO. USA
- Contact:
Re: "Z axis Max Rate Exceeded" error UPDATE: Now "438 Spindle slave position error"
Marty,
Here is my old video with some info on what I changed, at least I think it is there!
https://youtu.be/772VcHhFSV0
Dave C.
Here is my old video with some info on what I changed, at least I think it is there!
https://youtu.be/772VcHhFSV0
Dave C.
Grizzly G0678 Mill ,CNC conversion with Acorn. G4004G Lathe, Mach 3 conversion to Acorn.