First Project | proLIGHT | Acorn Conversion

[DICKEYBIRD]

Although, I do have minor uncertainty, where I just need confirmation I'm seeing things correctly.
For both the KBCC-125R and KBSI-240D, electrical supply can be standard wall socket power, 120v AC?
In Milton's set up below, the boxed component is simply 120v AC power distribution, right?

Also, where does the ground from the 120v AC get hooked up?

I think the picture you posted is of ScotY's setup, not mine. I'm not familiar with the widget you drew the box around. A line filter maybe?

All of the neutral & line conductors for the line voltage supplied components in my control cabinet(s) are hooked up to the main power contactor. The incoming line ground is attached to a single "star" ground stud in the cabinet. All other components' grounds are attached to that one stud.

[citterly]

I think the picture you posted is of ScotY's setup, not mine. I'm not familiar with the widget you drew the box around. A line filter maybe?

All of the neutral & line conductors for the line voltage supplied components in my control cabinet(s) are hooked up to the main power contactor. The incoming line ground is attached to a single "star" ground stud in the cabinet. All other components' grounds are attached to that one stud.

Thanks Milton, that all makes good sense. Now that you say it, the existing cabinet has this ground point, although no power point.
There are like 3 separate power cords coming out of the box...

Having so little experience, I feel the need to flush out the small doubts with questions for folks like you.
I appreciate you creating the schematic, in combination with the datasheets, it made things much more clear.

Time to order some parts.
Have a great day.

[citterly]

Spindle bench test success.
Reversing direction and changing speed all work just fine from the on screen control in manual mode.

Although, the direction of the spindle is flipped, clockwise button spins counter-clockwise and vice versa.
I didn't see a software setting for this in the wizard, so I'm guessing two wires should be flipped?

Also, how do I calibrate/check the spindle speed, actual versus what shows up on the DRO ?

Thanks !
Chris

[martyscncgarage]

Spindle bench test success.
Reversing direction and changing speed all work just fine from the on screen control in manual mode.

Although, the direction of the spindle is flipped, clockwise button spins counter-clockwise and vice versa.
I didn't see a software setting for this in the wizard, so I'm guessing two wires should be flipped?

Also, how do I calibrate/check the spindle of actual versus what shows up on the DRO ?

Thanks !
Chris

Congrats Chris on getting this far!
I believe all you will have to do is reverse your motor leads.
I will let Milton explain how he "tuned" his spindle speed.

Marty

[DICKEYBIRD]

....clockwise button spins counter-clockwise and vice versa.
I didn't see a software setting for this in the wizard, so I'm guessing two wires should be flipped?

Also, how do I calibrate/check the spindle of actual versus what shows up on the DRO?

Remember that the spindle direction is viewed from the back of the headstock, not the face of the chuck. Sorry if you already knew that but it tripped me up the 1st few times. Switching 2 wires at the motor will fix it if it's wrong.

The speed calibration is adjusted at the trim pots on the KBSI-240D Isolator. Command the lowest spindle speed (in the MDI screen) & adjust the "MIN" pot 'til the DRO speed matches; then command the highest speed & adjust the "MAX" pot. They do affect each other so a little fiddling back & forth should get you pretty close.

[citterly]

Remember that the spindle direction is viewed from the back of the headstock, not the face of the chuck. Sorry if you already knew that but it tripped me up the 1st few times. Switching 2 wires at the motor will fix it if it's wrong.

The speed calibration is adjusted at the trim pots on the KBSI-240D Isolator. Command the lowest spindle speed (in the MDI screen) & adjust the "MIN" pot 'til the DRO speed matches; then command the highest speed & adjust the "MAX" pot. They do affect each other so a little fiddling back & forth should get you pretty close.

Ahhhh, OK, I didn't know that was the case for standard direction.
I was sitting down with my head below the spindle, I'll stand up and try again, LOL.

I see what you're talking about on the KBSI-240D.
Haven't tried the MDI screen yet, but will give it a shot.

How do I determine the MIN speed of the motor, the tag says 6700 RPM, which I'm assuming is max speed.
Also, what am I verifying against? Don't I need some other form of good known RPM reading?

Thanks!!!

[martyscncgarage]

Remember that the spindle direction is viewed from the back of the headstock, not the face of the chuck. Sorry if you already knew that but it tripped me up the 1st few times. Switching 2 wires at the motor will fix it if it's wrong.

The speed calibration is adjusted at the trim pots on the KBSI-240D Isolator. Command the lowest spindle speed (in the MDI screen) & adjust the "MIN" pot 'til the DRO speed matches; then command the highest speed & adjust the "MAX" pot. They do affect each other so a little fiddling back & forth should get you pretty close.

Ahhhh, OK, I didn't know that was the case for standard direction.
I was sitting down with my head below the spindle, I'll stand up and try again, LOL.

I see what you're talking about on the KBSI-240D.
Haven't tried the MDI screen yet, but will give it a shot.

How do I determine the MIN speed of the motor, the tag says 6700 RPM, which I'm assuming is max speed.
Also, what am I verifying against? Don't I need some other form of good known RPM reading?

Thanks!!!

Buy a digital Tach from Amazon, their pretty inexpensive and work OK.
http://a.co/4F3cmE8

[citterly]

Buy a digital Tach from Amazon, their pretty inexpensive and work OK.
http://a.co/4F3cmE8

Fun, ordered, thanks!!

[citterly]

Update:
E-Stop & limit switches working.
HomeAll limit switches working.

I struggle going from schematics to actual wiring, so I learned a bit on how to use terminal blocks more effectively.
Hopefully it sticks for a while...

Next Steps:
Get all the components and wiring off the bench and into a box or boxes.
There's a nice metal box on the back of the machine, but I don't think everything will fit inside.
I'll probably have to get an additional enclosure.
Once I start laying things out, the separation should become clear....

Questions:
Spindle
The spindle motor has a 6700 max RPM, but there is a 70% reduction in the belt/cog system --> 4690 RPM
In trying to set the signal isolator limits, I had the spindle over 6000 RPM.
Should I just stick with the 4690 target or try and get all the RPM that I can??

How do you determine the minimum speed of the spindle?
At 500 RPM it seems to still have decent torque, but at 250 it's pretty bad, can be stopped by hand.

Power draw bar
The power draw bar is a simple lever operated by a pneumatic cylinder, 2 lines, 1 top, 1 bottom.
I'm guessing a simple, non-electrical, switch can be added to apply air pressure for tool release.
Any suggestions on the right component for the job?

Home position
Attached is a pic of my axis config page.
Home is currently in the physical position I'd prefer, table is X = operator left; Y = nearest operator, but I think the DRO is not reading as I expect, it's (0,0,0)
I'd like it to read (12.1, 6.1, 0) in this physical position.

That way it matches the traditional Cartesian coordinate system from geometry class
It seems like it should be an easy change, but I'm missing something.

Thanks All !!
Chris

[martyscncgarage]

Chris, my replies below your questions

Update:
E-Stop & limit switches working.
HomeAll limit switches working.

I struggle going from schematics to actual wiring, so I learned a bit on how to use terminal blocks more effectively.
Hopefully it sticks for a while...

Next Steps:
Get all the components and wiring off the bench and into a box or boxes.
There's a nice metal box on the back of the machine, but I don't think everything will fit inside.
I'll probably have to get an additional enclosure.
Once I start laying things out, the separation should become clear....
Lay it all out on the bench, maybe on a piece of cardboard the size of the back of your cabinet. See if it will fit...


Questions:
Spindle
The spindle motor has a 6700 max RPM, but there is a 70% reduction in the belt/cog system --> 4690 RPM
In trying to set the signal isolator limits, I had the spindle over 6000 RPM.
Should I just stick with the 4690 target or try and get all the RPM that I can??
You need to check the voltage of your spindle motor. Should be on the nameplate tag. Don't exceed it. Use the MAX pot to bring it down

How do you determine the minimum speed of the spindle?
At 500 RPM it seems to still have decent torque, but at 250 it's pretty bad, can be stopped by hand.
What did the original specs of the machine say? Go with that speed range....

Power draw bar
The power draw bar is a simple lever operated by a pneumatic cylinder, 2 lines, 1 top, 1 bottom.
I'm guessing a simple, non-electrical, switch can be added to apply air pressure for tool release.
Any suggestions on the right component for the job?
Yes, a momentary push button actuating the solenoid. What is the voltage of the solenoid?

Home position
Attached is a pic of my axis config page.
Home is currently in the physical position I'd prefer, table is X = operator left; Y = nearest operator, but I think the DRO is not reading as I expect, it's (0,0,0)
I'd like it to read (12.1, 6.1, 0) in this physical position.
I like X- which is table all the way to the right, Y- which is table to the back. Z+ is a must on a mill. You can make it however you want. but wait until you geth the motors mounted on the mill and the axis moving in the right direction first.

That way it matches the traditional Cartesian coordinate system from geometry class
It seems like it should be an easy change, but I'm missing something.

Thanks All !!
Chris