Rotary axis moving when turning on controller box

[guerra_cues]

Hello,
Please see the video attached.
When I turn on my CNC controller box, my rotary moves as you can see on the video.
When I am doing inlay work and need to be more precise I can’t have the A axis moving because I am actually doing inlay and indexing and I will be thrown completely off.
How can I correct this behavior?

[Gary Campbell]

Do you have a one or two step process to power up your ClearPath servos? Is there a homing sensor on the rotary axis? Which connection method did you use for the ClearPath control wires?

Please attach a current report

[guerra_cues]

Hello,
Please see the video attached.
When I turn on my CNC controller box, my rotary moves as you can see on the video.
When I am doing inlay work and need to be more precise I can’t have the A axis moving because I am actually doing inlay and indexing and I will be thrown completely off.
How can I correct this behavior?

Hello Gary,
Can you clarify on the 1 or 2 step process to power up the Clearpath servos? I turn the controller on and that is it...
No homing sensor on the rotary Axis, yet.
I used the Teknic cables provided to connect the Clearpath motors to the Acorn controller... Used the instructions provided by Centroid.

[Gary Campbell]

I used the Teknic cables provided to connect the Clearpath motors to the Acorn controller... Used the instructions provided by Centroid.

IF you look here: https://centroidcncforum.com/viewtopic.php?f=63&t=5258

there are several different configurations, 24v, 5v, C86ACCP, etc., that have been proven to work. Provide schematic of the version you used. Are you using the required resistors? If so, what value?

Steppers/servos will usually "jump" into a magnetic or electronic "detent" when powered up. It is never assumed to be a repeatable position. Thats why I recommend a homing sensor.

I use a 2 step process that powers up the servo power supply at a different time in the startup sequence from control power via an output configured as "NoFaultOut"

[guerra_cues]

I used the Teknic cables provided to connect the Clearpath motors to the Acorn controller... Used the instructions provided by Centroid.

IF you look here: https://centroidcncforum.com/viewtopic.php?f=63&t=5258

there are several different configurations, 24v, 5v, C86ACCP, etc., that have been proven to work. Provide schematic of the version you used. Are you using the required resistors? If so, what value?

Steppers/servos will usually "jump" into a magnetic or electronic "detent" when powered up. It is never assumed to be a repeatable position. Thats why I recommend a homing sensor.

I use a 2 step process that powers up the servo power supply at a different time in the startup sequence from control power via an output configured as "NoFaultOut"

I am more a software person than electronics and I had a friend actually put the controller box together, however I know what I bought and in terms of power I bought everything that a Teknic engineer recommended and that is suggested when you go through the wizard on the Clearpath purchase.
I know I got the 350/500 Watt DC Power Supply IPC-5 and the DC Power Distribution Hub and we followed the schematics on the Centroid website:
https://www.centroidcnc.com/centroid_di ... oller.html
As much as I want to be proficient on everything, certain things I don't get it yet (pretend you are talking to a small kid at that point ) so I would appreciate if you could elaborate on the

I use a 2 step process that powers up the servo power supply at a different time in the startup sequence from control power via an output configured as "NoFaultOut"

I know a lot of you guys that help on the forum are seasoned CNC guys... It would be appreciated sometimes if you could elaborate a bit more.
Thanks for the precious help you guys always provide.

What should I do and what should I look for in order not to get any movement when my controller powers up? Is that an impossible ask? I have homing switches on all axis except on the rotary.

[martyscncgarage]

In looking at the report you posted, there are no outputs defined:
;------------------------------------------------------------------------------
; Output Definitions
; Logic 1 = OUTPUT ON (Green), 0 = OUTPUT OFF (Red)
;------------------------------------------------------------------------------

; DO NOT MODIFY
; #wizardregion Outputs
OUTPUT1 IS OUT1
OUTPUT2 IS OUT2
OUTPUT3 IS OUT3
OUTPUT4 IS OUT4
OUTPUT5 IS OUT5
OUTPUT6 IS OUT6
OUTPUT7 IS OUT7
OUTPUT8 IS OUT8

You should be using NoFault assigned to an output, use that relay to energize a contactor that powers up your Clearpath power supply and opens the circuit to your spindle motor (this is a safety feature should there be a fault or an Estop press, all machines should be using this)
This must be a new build you are just getting started with?

Inputs currently assigned:
;------------------------------------------------------------------------------
; INPUT DEFINITIONS
; Closed = 1 (green) Open = 0 (red)
;------------------------------------------------------------------------------

; DO NOT MODIFY
; #wizardregion Date
; Date: 01-12-2020
; #endregion

; DO NOT MODIFY
; #wizardregion Drive
; Using Drive:Clearpath SDSK & SDHP
; #endregion

; DO NOT MODIFY
; #wizardregion Inputs
SecondAxisHomeOk IS INP2
ThirdAxisHomeOk IS INP3
FirstAxisHomeOk IS INP4
EStopOk IS INP8
; #endregion

[guerra_cues]

In looking at the report you posted, there are no outputs defined:
;------------------------------------------------------------------------------
; Output Definitions
; Logic 1 = OUTPUT ON (Green), 0 = OUTPUT OFF (Red)
;------------------------------------------------------------------------------

; DO NOT MODIFY
; #wizardregion Outputs
OUTPUT1 IS OUT1
OUTPUT2 IS OUT2
OUTPUT3 IS OUT3
OUTPUT4 IS OUT4
OUTPUT5 IS OUT5
OUTPUT6 IS OUT6
OUTPUT7 IS OUT7
OUTPUT8 IS OUT8

You should be using NoFault assigned to an output, use that relay to energize a contactor that powers up your Clearpath power supply and opens the circuit to your spindle motor (this is a safety feature should there be a fault or an Estop press, all machines should be using this)
This must be a new build you are just getting started with?

Inputs currently assigned:
;------------------------------------------------------------------------------
; INPUT DEFINITIONS
; Closed = 1 (green) Open = 0 (red)
;------------------------------------------------------------------------------

; DO NOT MODIFY
; #wizardregion Date
; Date: 01-12-2020
; #endregion

; DO NOT MODIFY
; #wizardregion Drive
; Using Drive:Clearpath SDSK & SDHP
; #endregion

; DO NOT MODIFY
; #wizardregion Inputs
SecondAxisHomeOk IS INP2
ThirdAxisHomeOk IS INP3
FirstAxisHomeOk IS INP4
EStopOk IS INP8
; #endregion

Hello Marty,

Thanks for the reply. It is a new build indeed, I mean the build is up and running, any feedback of what else I need to check and fix is appreciated. What do you suggest me to do then? What output do I need to assign the NoFaultOut output type?
Thanks!

[martyscncgarage]

As I stated, you have not used any outputs. You should be using the NoFault output to control a contactor. When CNC12 is in its ready state, (You reset the control) it will close the contactor, apply power to the axis drives, and close a circuit to operate your spindle.
When axis motors power up, rotors lock.

This is a critical safety feature. ALL MACHINES should implement.
If the control experiences a fault, it will open the contactor, powering off the axis drives and stopping the spindle motor.
When a fault occurs, the machine needs to be rehomed and the job restarted.

Marty

[guerra_cues]

As I stated, you have not used any outputs. You should be using the NoFault output to control a contactor. When CNC12 is in its ready state, (You reset the control) it will close the contactor, apply power to the axis drives, and close a circuit to operate your spindle.
When axis motors power up, rotors lock.

This is a critical safety feature. ALL MACHINES should implement.
If the control experiences a fault, it will open the contactor, powering off the axis drives and stopping the spindle motor.
When a fault occurs, the machine needs to be rehomed and the job restarted.

Marty

Marty,
I am a bit confused... Should I drag and drop the NoFault to Output1, Output2 or Output3?
No sure what do you mean by Contactor...
The spindle is operated manually for the time being, it's not connected yet to an analog output.
I apologize for so many questions... I am a rookie still, trying to learn as I go so please be patient

[martyscncgarage]

A contactor is an electrical relay that opens and closes one or multiple "switches".
The Acorn relay board has 8 small relays. Their contacts are only electrically rated for so much electrical current.
SO, you use an Acorn Output Relay assigned to NoFault, to power and control a larger contactor with multiple contacts.

IF this is still confusing, when I have time, I will try and do a simple demonstration and do a video on it. My time is quite thin right now

Can you read and understand an Acorn schematic?

Marty