Hi Funkenjeager, I'm an applications engineer at Teknic. I just ran across this post and wanted to make one (hopefully helpful) suggestion. And that is: When you move the axis to a more stable base (as you mentioned) we recommend running auto tune again. Auto tune will adapt and adjust the tuning accordingly and it should make a measurable difference in servo performance. My apologies if this is old news. Also, thanks for giving ClearPath motors a try! Best regards, Jim W. - Teknic Servo Systems Engineer
Hi Jim - thanks for reaching out. I have since moved the machine to a much more stable base, but ran into some issues with auto-tune. I'm in contact with one of your fellow engineers (Aaron B.) and look forward to working toward resolution.
Im about to buy clear path SDSK-3421S-RLN for X and Y and then SDSK-3432S-RLN for Z axis. Just wondering for my mill should I get the HP models which cost a little more but then supposed to be very very good.
Hi James I'm an applications engineer with Teknic and would like to help answer your question. The primary difference between the SDSK and the SDHP is that the SDHP has more shaft power. Because shaft power is the product of speed and torque you can get more power by either spinning faster, producing more torque, or both. The other notable difference is that the SDHP models come standard with the "Enhanced" ("E" versus "R" in the part number) encoder option with a command resolution of 6,400 quad counts/rev versus 800 quad counts per rev on the SDSK. The Enhanced option also includes the full complement of the Regressive Auto Spline settings for double jerk limiting your profile for smoother motion. For most CNC mill retrofit kits, the power and capability of the SDSK closed-loop servo series is more than sufficient. As an example, many of these CNC retrofit systems use ballscrews with a 5 tpi pitch (0.2 inch lead) so, with the CPM-SDSK-3421S-RLN motor at 75 Vdc, you can theoretically achieve 200 inches/min (1,000 rev/min x 0.2 inches/rev = 200 inches/min). There are naturally a lot of factors that go into picking the optimal motors for your CNC upgrade, but I would start with determining what top speeds (during both rapids and cutting) are important for your application. By understanding the top speed objectives along with your mechanics, you can then narrow down the motor selection. If you have any further questions, please feel free to contact Teknic at 585-784-7454 or submit a contact request at teknic.com/contact/. Thanks, Abe A. - Teknic Applications Engineer
Hi Funkenjeager,
I'm an applications engineer at Teknic. I just ran across this post and wanted to make one (hopefully helpful) suggestion. And that is: When you move the axis to a more stable base (as you mentioned) we recommend running auto tune again. Auto tune will adapt and adjust the tuning accordingly and it should make a measurable difference in servo performance. My apologies if this is old news. Also, thanks for giving ClearPath motors a try!
Best regards,
Jim W. - Teknic Servo Systems Engineer
Hi Jim - thanks for reaching out. I have since moved the machine to a much more stable base, but ran into some issues with auto-tune. I'm in contact with one of your fellow engineers (Aaron B.) and look forward to working toward resolution.
Im about to buy clear path SDSK-3421S-RLN for X and Y and then SDSK-3432S-RLN for Z axis. Just wondering for my mill should I get the HP models which cost a little more but then supposed to be very very good.
Hi James
I'm an applications engineer with Teknic and would like to help answer your question. The primary difference between the SDSK and the SDHP is that the SDHP has more shaft power. Because shaft power is the product of speed and torque you can get more power by either spinning faster, producing more torque, or both. The other notable difference is that the SDHP models come standard with the "Enhanced" ("E" versus "R" in the part number) encoder option with a command resolution of 6,400 quad counts/rev versus 800 quad counts per rev on the SDSK. The Enhanced option also includes the full complement of the Regressive Auto Spline settings for double jerk limiting your profile for smoother motion.
For most CNC mill retrofit kits, the power and capability of the SDSK closed-loop servo series is more than sufficient. As an example, many of these CNC retrofit systems use ballscrews with a 5 tpi pitch (0.2 inch lead) so, with the CPM-SDSK-3421S-RLN motor at 75 Vdc, you can theoretically achieve 200 inches/min (1,000 rev/min x 0.2 inches/rev = 200 inches/min).
There are naturally a lot of factors that go into picking the optimal motors for your CNC upgrade, but I would start with determining what top speeds (during both rapids and cutting) are important for your application. By understanding the top speed objectives along with your mechanics, you can then narrow down the motor selection.
If you have any further questions, please feel free to contact Teknic at 585-784-7454 or submit a contact request at teknic.com/contact/.
Thanks,
Abe A. - Teknic Applications Engineer