New Centroid Teknic Clearpath officially supported configurations

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cnckeith
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New Centroid Teknic Clearpath officially supported configurations

Post by cnckeith »

New Centroid Teknic Clearpath officially supported configurations

Two connections choices.

1.) Plug and Play C86ACCP board from cnc4pc.com
https://www.cnc4pc.com/c86accp-clearpat ... oller.html
c86cp.PNG
Notes on C86 board. Unit works well. Simplifies the CNC control build to a plug and play kit.
1.) Both the Motor cables and the C86 board itself should be strain relieved properly during installation.
2.) Make sure Acorn screw terminals are very tight.


2.) Direct Wire to Acorn screw terminals. For those that don't mind cutting cable ends and wiring up relays for the Clearpath drive fault signal. Change here from previous is to use 5 VDC supply voltage to the open collector screw terminals on the Acorn and therefore a resistor value change. Our testing shows 5 VDC works best with the Clearpath drive. Note the addition of a 100 OHM, 1/2 watt resistor. This resistor is recommended in all applications. Use 1/2 watt or Larger. (a higher wattage resistor runs cooler)
cpdw.PNG

Wizard Step frequency = 200,000.

Note on Step frequency: Testing reveals good results up to around 300,000 steps per second. 200,000 step per second is more than good for most applications (mills, lathes, most routers) on routers when very high rapid rates are required the step rate can be increased using the CNC12 parameter #968

Steps per rev:

Clearpath SDSK currently are available in two flavors a 800 step per rev unit (RLN) and a 6400 step per rev unit (ELN). We recommend purchasing the 6400 step per rev unit. While it might seem common sense to set the step per rev in the Wizard to 800 when using the 800 step per rev Clearpath motor we do not recommend this. Centroid software was never designed to run a a step rate lower than 1600. So when using the 800 RLN unit use 1600 steps per rev in the Wizard. (you can use a higher number the only effect is the top speed will be reduced the higher the step per rev is used) and set the Clearpath Software so it knows that 1600 = 1 turn of the motor.

Steps per rev for the 6400 step per rev unit (ELN) for Milling machines and Lathes and some Routers 6400 steps per rev
6400.PNG
For Routers that need more rapid rate speed use 1600 to 3200 (use 1600 if you want speed, use 3200 if you want good 3D performance)
If you need more top speed (Max rate = Rapid rates= G0 moves) than 1600 step per rev yields then adjust the step frequency manually to 300,000 with parameter 968.
Otherwise use the highest step per rev that will achieve the Max rate that you want so you have good resolution along with good max rates.
Attachments
S15072-ACORN_rev4_CLEARPATH_SDSK_SERIES_MOTOR, CNC4PC C86ACCP.pdf
(149.15 KiB) Downloaded 56 times
S14972-ACORN_rev4_MULTIPLE_CLEARPATH_SDSK_SERIES_MOTORS.pdf
(185.36 KiB) Downloaded 52 times
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
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Re: New Centroid Teknic Clearpath officially supported configurations

Post by teknic_servo »

Hi Keith,
This looks great, thank you. The C86ACCP board addresses the plug and play functionality of the ClearPath Molex connectors, the appropriate resisitor values, and managing the HLFB output signal.

I should mention that for cost sensitive applications or where higher resolution is not needed, the ClearPath -RLN motors work really well with the ACORN CNC control board. Just don't set the step input resolution in Teknic's MSP (Motor Setup Program) to be any lower than 1600 steps per rev. For high resolution applications, use the ClearPath -ELN motors set to 6400 steps per rev.

Teknic is also discussing providing cable lengths other than 10ft and 55ft, which are the lengths currently being offered. The general consensus seems to indicate that 20ft would meet the needs of most DIY mills and tabletop CNC machines.

Stay tuned to MartysCNCGarage on YouTube for videos that show more information regarding the integration of the ACORN CNC control with the ClearPath SD series of closed loop servo motors on his SYIL X4 mill. Marty takes you from start to finish with the integration and provides many tips and tricks.
Tom T.
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Re: New Centroid Teknic Clearpath officially supported configurations

Post by Dave_C »

Note the addition of a 100 OHM, 1/2 watt resistor. This resistor is recommended in all applications. Use 1/2 watt or Larger. (a higher wattage resistor runs cooler)
First we had 2K ohm resistors, then 10K ohm resistors and now we are saying 100 ohm?

Is that a typo?

Dave C.
Grizzly G0678 Mill ,CNC conversion with Acorn. G4004G Lathe, Mach 3 conversion to Acorn.
eng199
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Re: New Centroid Teknic Clearpath officially supported configurations

Post by eng199 »

It is 100 ohm pull up to 5V. Both the recommended configurations are 5V pull up.
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Re: New Centroid Teknic Clearpath officially supported configurations

Post by RogDC »

Just for clarification, are the step and direction inputs on H2 & H3 5V or 24V?
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Re: New Centroid Teknic Clearpath officially supported configurations

Post by Dave_C »

eng199 wrote: Fri Mar 05, 2021 5:46 pm It is 100 ohm pull up to 5V. Both the recommended configurations are 5V pull up.
Neither of the drawings above are for 5 VDC because they connect to the screw terminals and not the DB25

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Grizzly G0678 Mill ,CNC conversion with Acorn. G4004G Lathe, Mach 3 conversion to Acorn.
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Re: New Centroid Teknic Clearpath officially supported configurations

Post by Centroid_Tech2 »

I think there is some confusion about how the open collector screw terminal outputs on H2 and H3 work.
They don't supply any voltage. They pull down to COM/GND to turn on.
Therefore they are whatever signal voltage you supply as a pullup voltage(5,12,24).
Both schematics above show a 5VDC pullup voltage.
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Re: New Centroid Teknic Clearpath officially supported configurations

Post by RogDC »

I overlooked that the enable voltage on this latest revision changed to 5VDC, IIRC the previous version was 24VDC.
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Re: New Centroid Teknic Clearpath officially supported configurations

Post by cnckeith »

Dave_C wrote: Fri Mar 05, 2021 6:17 pm


Neither of the drawings above are for 5 VDC because they connect to the screw terminals and not the DB25

Dave C.
Dave, hello. this statement is not true. :D the drawings above are using 5 VDC.

after a lot of detailed testing it has been determined that 5 VDC is best for use with the Clearpath so change from previous recommendations is using 5 VDC instead of 24 VDC hence the resistor value change.
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
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Re: New Centroid Teknic Clearpath officially supported configurations

Post by Dave_C »

Yup, clear as mud!

Keith removed the "False" word in his post and addressed it properly so I'm cleaning up mine as well.
Edited 03/06/21 16:20

Dave C.
Last edited by Dave_C on Sat Mar 06, 2021 6:21 pm, edited 2 times in total.
Grizzly G0678 Mill ,CNC conversion with Acorn. G4004G Lathe, Mach 3 conversion to Acorn.
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