[Potatohead908]

I wired my controller many years ago and don't recall all the details. I am wanting to connect a C3 to my C11 so that I can thread on my lathe. Can someone give me some input on this? I have the sensor mounted and power to the C3. I am unsure how to connect the output of the C3 to a input on the C11.

Thank you.

[john-100]

which versions of the C11 BOB & C3 index pulse board do you have ?

as the C3 output terminals are GND & either NPN open collector or TTL level

you will need to connect the C3 GND to the C11G boards GND and C3 output to a C11 input

if you have a C11 BOB with opto-isolated inputs the C3 GND needs to be connected to the C11
boards isolated negative 5V supply - not the negative PC 5V !

John

[Potatohead908]

John, The C11 is rev. 9.8 and the C3 is rev. 6.1.

"if you have a C11 BOB with opto-isolated inputs the C3 GND needs to be connected to the C11
boards isolated negative 5V supply - not the negative PC 5V !" Are you referring to the 2 grounds on the right side of this diagram, near the 3 5V terminals?

https://www.automationtechnologiesin...akoutboard.pdf

[john-100]

yes that's the the ground terminal I am referring to
and the +5V next to it will be needed to power the C3 board

Attachment 407996

Attachment 407998

if the FC350 speed control board can supply enough power to supply the C3 board +12V in

this would work for CNC control only
note - a relay will need to connect the FC350 board terminals 3 & 5 to start the motor

Attachment 408000

or if you want to switch between manual and CNC control

Attachment 408002


if the FC350 speed control board can not supply the 12V supply for the C3 board
you will need to add an isolated 12V supply

[truckeic]

yes that's the the ground terminal I am referring to
and the +5V next to it will be needed to power the C3 board

Attachment 407996

Attachment 407998

if the FC350 speed control board can supply enough power to supply the C3 board +12V in

this would work for CNC control only
note - a relay will need to connect the FC350 board terminals 3 & 5 to start the motor

Attachment 408000

or if you want to switch between manual and CNC control

Attachment 408002


if the FC350 speed control board can not supply the 12V supply for the C3 board
you will need to add an isolated 12V supply

John looks like you know some about the C11 G board.
Wonder if you could shed some light for me. I am getting ready to buy one and replace my C10.
I am running a Harbor Freight X2 and I don't have Rev .
I was looking into using the onboard relays to do this.
The new version of this board uses pin 14 for the PVM Pin 16 for the direction.
The combo of 14 on and the state of 16 turns on relay 1 or 2.
So the question is..
If I issue a M3 command in MACH3 does that turn on Pin 16 and a M4 command turn it off.

Have any of you guys done threading with this configuration?

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[john-100]

As I don't have a C11G or Harbor Freight X2 I don't have many details of either

for tapping, in addition of the M3/M4 commands for clockwise/counterclockwise spindle rotation

I expect you will need to use a floating tap holder because I don't think you can put the spindle into reverse without waiting for it to stop first !
also as you didn't say you have a C3 index board so you don't have any way to syncronise the spindle to the movement of the Z axis


Is the spindle speed control board like this xmt2360pcb ?




John

[truckeic]

As I don't have a C11G or Harbor Freight X2 I don't have many details of either

for tapping, in addition of the M3/M4 commands for clockwise/counterclockwise spindle rotation

I expect you will need to use a floating tap holder because I don't think you can put the spindle into reverse without waiting for it to stop first !
also as you didn't say you have a C3 index board so you don't have any way to syncronise the spindle to the movement of the Z axis


Is the spindle speed control board like this xmt2360pcb ?




John

I was planning on using a hall effect sensor for tach to MACH.
The drawings you posted are the same speed controller I have. The lathe and the mill have the same board.
Does the M3 and M4 commands change the state of the direction pin in Spindle.

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[john-100]

now I know which speed control you have - FC350 I have found a new link to a service manual for the sieg FC350

https://manualzz.com/doc/18470309/a-...roller-made-by

(the link to another web site I had used in the past no longer works ! )


compared to the FC250 I have worked on - see this post

https://www.model-engineer.co.uk/for...p?th=38809&p=1

the FC350 you have
has a 3rd relay (RL3) to disconnect the motor if its overloaded
(with the FC250 you would damage the FET's used to control the motor current ! )
you will still to let the motor slow down almost to a stop before reversing the motors direction

you will need additional 2 or 3 pole relays to reverse the connections to the motor

the extra relays need to emulate the 3 position (on/off/on) 4 pole switch used to reverse the motor in this diagram

https://littlemachineshop.com/images...iagram2507.pdf

John

[truckeic]

now I know which speed control you have - FC350 I have found a new link to a service manual for the sieg FC350

https://manualzz.com/doc/18470309/a-...roller-made-by

(the link to another web site I had used in the past no longer works ! )


compared to the FC250 I have worked on - see this post

https://www.model-engineer.co.uk/for...p?th=38809&p=1

the FC350 you have
has a 3rd relay (RL3) to disconnect the motor if its overloaded
(with the FC250 you would damage the FET's used to control the motor current ! )
you will still to let the motor slow down almost to a stop before reversing the motors direction

you will need additional 2 or 3 pole relays to reverse the connections to the motor

the extra relays need to emulate the 3 position (on/off/on) 4 pole switch used to reverse the motor in this diagram

https://littlemachineshop.com/images...iagram2507.pdf

John

Yes thanks my mill right now has no Rev.
That said the C11G had 2 relays..
What I. Trying to confirm is if I issue a M3 S1000 command that would pulse the step PVM and it would turn on the dir pin. And. M4 S1000 would turn on the spindle but turn off the dir pin so the motor would reverse correct?

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