Beauty in The Beast: Webb 5BVK Barn Find/Conversion

[JimDawson]

Now comes the part I am not so clear on.
Is there a scheme that would allow me to use the brushed DC power supply you linked, and a rotary potentiometer, like below, combined with a spring action joy stick? This to allow me to move the quill up and down (and adjust it's speed of motion when needed.

Not that one, that requires a pulse input to run, like from an encoder or a controller.

Something like this might work https://www.ebay.com/itm/2547423054...43b5ade42541366fe4e1|ampid:PL_CLK|clp:2334524

 

[extropic]

Placement of the every manual quill control I've seen is on the operators right hand side of the machine's head.
The problem I have with using a joy stick is that it's seem so easy to bump accidentally. Wouldn't that be a problem?

 

[Charlieman22]

Family event had me out of the house this afternoon/eve.
It's interesting. Both of you are identifying the norms I haven't necessarily considered - due to your experience.
It's caused me to think through placement and function in a different way.

The problem I have with using a joy stick is that it's seem so easy to bump accidentally. Wouldn't that be a problem?

I hadn't considered any bumping issue.
For the quill - it will be up at the normal level of a quill wheel.
Perhaps I should think about keeping it on the right side - which would also protect it from being bumped.

Something like this might work https://www.ebay.com/itm/2547423054...43b5ade42541366fe4e1|ampidL_CLK|clp:2334524

I saw the unit from that link.
It could do a good job as a speed control - but turning such a small knob + lacking the tactile feel, seems like it would be strange.
The CNC pendant you previously sent would be a more interesting nob to turn to move the quill.
Perhaps we can recap options tomorrow.
I may not be fully understanding - muddling apples and oranges.

Thanks both.

 

[JimDawson]

I actually should have linked to this one, it has a reversing switch.

DC 10-55V MAX 60A PWM Motor Speed Controller CW CCW Reversible 12V 24V 36V | eBay

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The knob sets the speed and the switch is For/Off/Rev. You could replace the switch with a joystick.

 

[Charlieman22]

AHHH! (Light bulb over head flashing)
Got it.
And love it.
For $15 - its a done deal for first round experiment at minimum.
Thanks.

If joystick is a failure - I can toy around with other means of engaging - but this will get me out of the gate.
Having slept on it - using your external box idea as a starting point would likely be the quickest simplest.
Once I have a set up I like - I can refine its placement and install in a custom face plate .
So we now have a plan for spindle movement up down.

As for motor power - yesterday - received my VFD.
Fish out of water on this - but think I get the gist.
Posting below with request for input - to avoid shutting down neighborhood with blackout due to user error.

So obviously - three wires run form plug to VFD at R/S/T connections, but not sure which correspond to which on the plug?
Then 3 wires run from VFD to motor - motor has black red green currently. VFD is labeled with U/V/W.
Finally - VFD has a "earth" terminal, 1E, but I'm not sure how this would come in to play at all for my set up?

Think we might be able to test the motor today with a little help - and a little luck...
Thanks!
-CM



Diagram - mine is the bottom model.

Plug I will get from Lowes

 

[Charlieman22]

Looks like Amazon can deliver this tomorrow.
Best I can tell its the same unit?

https://www.amazon.com/gp/product/B...title_srh_1?ie=UTF8&psc=1&smid=A2YO41UFJMTITF

 

[JimDawson]

OK, now for the fun. First off, I would wire the plug through the main panel disconnect, then to the VFD. Even if temporary to be able to turn it on and off. Remove the existing wiring from the panel disconnect before connecting the new wires. Using the wall plug as a disconnect is a bad idea.

The incoming power will be connected to R and T, S is not used. Normally Red and Black wires in the cable, could also be Black and White wires. Green wire is always ground and connected to the center lug in the plug and the E1 terminal. Doesn't matter to which ''hot'' lug you connect the power wires to.

Motor will be connected to U, V, W. Motor case ground is also connected to E1. Might be best here to run a short piece of Green wire to the E1 terminal and use a wire nut to connect all of the grounds together. Those terminals are a bit small to try to stuff more than one wire into.

Now you need to set the running parameters in the VFD, the voltage and current need to match the motor data plate.

Look at the programming section of the manual. The goal for the moment is just to get the motor turning.

 

[JimDawson]

Looks like Amazon can deliver this tomorrow.
Best I can tell its the same unit?

https://www.amazon.com/gp/product/B...title_srh_1?ie=UTF8&psc=1&smid=A2YO41UFJMTITF

Looks the same. For testing you can use your bench 24V power supply.

 

[Charlieman22]

For testing you can use your bench 24V power supply.

Hmmm - joy stick has 4 terminals on it.
Actually not sure how to put this in line with my power supply and Servo to revers directions.

I would wire the plug through the main panel disconnect, then to the VFD.

Clear. Plug to main disconnect. Disconnect to VFD

The incoming power will be connected to R and T, S is not used. Normally Red and Black wires in the cable, could also be Black and White wires. Green wire is always ground and connected to the center lug in the plug and the E1 terminal. Doesn't matter to which ''hot'' lug you connect the power wires to.

Ok. Need just a bit more hand holding on this.
Below is a picture of the main disconnect.

Let's take it from the plug.
Plug has three wires.
One is on the big terminal.
One on the narrow terminal
One on the ground.
1. Does ground go directly to E1 in the VFD and skips the main disconnect?
2. Can you help walk me explicitly from the three terminals on the plug - to the main disconnect - and then to the VFD?

(where on the main disconnect do the incoming and outgoing wires connect to and where do they connect to exit and go to the VFD?)

 

[JimDawson]

You are not going to connect the joystick between the power supply and the controller. The joystick terminals would connect in place of the switch furnished with the controller. We'll get to those connections when you have a controller in your hand.

I'm going to assume that you have Black, White, and Green wires in the power cable from the plug.

Remove the Black wires (labeled 1, 2, 3) from the bottom of the disconnect and tape off.

Connect the Black and White wires from the plug to the corresponding labeled lugs at the top of the fuses
Connect the green wire to the existing green wire in the panel, where ever it is connected.
Remove the fuse labeled RED, it won't be used.

Now you have the three red wires connected to the bottom, below the fuses.
Locate the unused red wire and remove it.
Now you should have two red wires and a green wire going to the VFD.
Connect the red wires to the R and T terminals of the VFD, do not connect anything to the S terminal
Connect the green wire to the E1 terminal on the VFD

Connect the connect the motor wires to the U, V, W terminals on the VFD, doesn't matter in what order
Connect the green motor wire to the E1 terminal

Make sure the disconnect is turned off
Plug in the power cable
Turn the disconnect on, the VFD should power up.

Now you are ready to set the parameters.