Search found 2180 matches

by Gary Campbell
Sat Dec 15, 2018 10:51 am
Forum: Centroid Acorn CNC Controller
Topic: To my ShopBot Friends
Replies: 20
Views: 8207

To my ShopBot Friends

If you are reading this it means that you may just be curious or you sincerely have a desire to have your machine perform up to its potential. Here is what you need to know, and let me apologize for the post length in advance. If you pay attention to the ShopBot forum you must have come across this ...
by Gary Campbell
Sat Dec 15, 2018 9:51 am
Forum: Centroid Acorn CNC Controller
Topic: Clearpath plus or minus gearbox?
Replies: 9
Views: 3216

Re: Clearpath plus or minus gearbox?

I am retrofitting a 2006 Shopbot Buddy machine with Clearpath motors and an acorn board. The machine currently has 326 OZ motors driving a 3.6 to 1 planetary gear box. I can get a Clearpath servo that has more torque and better resolution than the current stepper WITH the planetary drive attached. ...
by Gary Campbell
Fri Dec 14, 2018 8:42 pm
Forum: Centroid Acorn CNC Controller
Topic: question on steppers and closed loop steppers
Replies: 8
Views: 2970

Re: question on steppers and closed loop steppers

Apparently the drives are doing much more than just monitoring the position. Actually not. Just like the controller, closed loop stepper drives simply compare the commanded number of steps given, apply a multiplier that would relate to a number of encoder counts, and based on parameters set in the ...
by Gary Campbell
Fri Dec 14, 2018 8:31 pm
Forum: Centroid Acorn CNC Controller
Topic: Random motion control
Replies: 2
Views: 1246

Re: Random motion control

Johnny... If the tool is veering off the desired path is it losing position or does it come back to the desired path? And, am I correct in hearing that this shows up in the graphing? It would be difficult to believe that if it shows up on the graphing screen that it is anywhere but in the code produ...
by Gary Campbell
Thu Dec 13, 2018 9:54 pm
Forum: Centroid Acorn CNC Controller
Topic: Clearpath Estop/Enable Circuit
Replies: 2
Views: 733

Re: Clearpath Estop/Enable Circuit

Daniel... You are correct, the ClearPath ENA will enable the motor, but will not reset a fault, you must power cycle for that. Some Teknic products do, some don't. And I agree, the ENA outputs don't work as I would have guess before testing. If you wish to have control over the enable circuit, use a...
by Gary Campbell
Thu Dec 13, 2018 9:17 pm
Forum: Centroid Acorn CNC Controller
Topic: E-stopping and VFD's
Replies: 2
Views: 898

Re: E-stopping and VFD's

TRM... I'm with you. You don't have to cut the 0-10v connection, the relay that provides the spindle forward will go inactive when an ESTOP event occurs. This will allow the full decel abilities of the drive to stop the spindle. That's my preference. Unfortunately industrial safety standards want th...
by Gary Campbell
Thu Dec 13, 2018 12:07 am
Forum: Centroid Acorn CNC Controller
Topic: Need proximity switches
Replies: 4
Views: 1782

Re: Need proximity switches

Bobby... The ones I use are listed here: https://www.automationdirect.com/adc/shopping/catalog/sensors_-z-_encoders/magnetic_proximity_sensors/8mm_round_industrial_automation You will need NPN versions. You can see that the NO versions outnumber the NC by about 10:1 and they are much pricier in NPN ...
by Gary Campbell
Tue Dec 11, 2018 11:08 pm
Forum: Centroid Acorn CNC Controller
Topic: Using ClearPath servos together with DMM DYN4 servo
Replies: 11
Views: 3713

Re: Using ClearPath servos together with DMM DYN4 servo

Mike...
Thanks for the kind words. Don't know if you've seen it, but I've used the 10:1 SureGear on a rotary axis and it worked very well.

https://youtu.be/SwWIJ-d35us

https://youtu.be/SwWIJ-d35us
by Gary Campbell
Tue Dec 11, 2018 10:59 pm
Forum: Centroid Acorn CNC Controller
Topic: Recommendations on budget priced tool height setter?
Replies: 13
Views: 5203

Re: Recommendations on budget priced tool height setter?

Mike... I haven't had a chance to put them on the mill and test with an indicator. If I was looking for something sub "a couple thousandths" I would get one of the more expensive units. Here is a link that shows them and current pricing. I obviously bought too early. :cry: They probably wi...
by Gary Campbell
Mon Dec 10, 2018 10:54 pm
Forum: Centroid Acorn CNC Controller
Topic: PC on with main power switch BIOS settings
Replies: 9
Views: 2627

Re: PC on with main power switch BIOS settings

Boot into the bios settings and look in the power section and see if there is a "Wake on USB" setting