Former Member
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I don't think of those as "safeties" but as "guards" as they are generally non-removable unless they are being serviced.
But I agree a definite must have.
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Other Safeties Use them or Not?
- Thread starter Former Member
- Start date
But I agree a definite must have.
They might be. But my multimeter doesn't validate that. There is no continuity on any of the inputs to the outputs when on is pressed.
Furthermore, absolutely nothing clicks or makes contact when the on switch or off switch is pressed.
The switch assembly is also quite heavy. It feels like there is a big relay in there.
An internal circuit diagram is not provided.
I have not tried a load of any kind yet, but will before I wire them into anything.
It's also possible it's defective.
@Susquatch, your measurements make sense but you need the rated voltage applied to make the relay activate.
There are at least 3 variations that look like that switch. The simple mechanical on/off version (from BB) which I have on my table saw, a magnetic version with four connection tabs and a third version, magnetic, with a fifth tab which appears can be used to wire in a remote E-STOP switch. That circuit branch maintains power to the coils of the relay.
See the 4 pin version here: 4 Pin Version including circuit diagram
See the 5 pin version here: 5 Pin Version, the circuit diagram on the switch looks like this: Photo of 6 Pin Switch, the circuit diagram looks like this: KJD17 Switch Diagram.
Which one do you have?
I'm looking for places to mount the 5 pin version plus an E-STOP on my First mill.
D
Former Member
Guest
Can you send a pic of back and side.
None of the above. All of the ones above only include external wiring. I wanna know what is inside.
The only one remotely similar is the last one because it has a big housing. The first ones all have a small housing.
Yes, I know it has to powered. I hooked it up to 110 on the inputs with zero results.
I'll do it again. I might see if I can attach a load too.
In the meantime, here are more photos. As you can see it's a big e-stop. It's heavy too. I wanna know the INTERNAL circuits.
See above.
Here is the external wiring for it. On the surface it appears to be a simple paddle switch that either shuts off both hot and neutral for 110 or two legs of 3 phase 220. The fact that it cuts both hot and neutral for 110 is another sign that it is more than a simple switch.
I tried connecting it to a live 110 circuit again just now. Doesn't do anything. Nothing on either output. No continuity between any of the contacts.
I tried connecting it to a live 110 circuit again just now. Doesn't do anything. Nothing on either output. No continuity between any of the contacts.
Mystery solved.
I pulled the other switch out of the package. Acts the same way unconnected to power. But if you add 110 to the inputs, you hear a relay close when on is pushed and 110 is passed to the output.
It's just a simple contactor for an estop on the mains.
I've had it long enough that there is no hope of refund. Truth is I don't even remember where I got it.
Anyway, thanks to everyone who tried to help.
I pulled the other switch out of the package. Acts the same way unconnected to power. But if you add 110 to the inputs, you hear a relay close when on is pushed and 110 is passed to the output.
It's just a simple contactor for an estop on the mains.
I've had it long enough that there is no hope of refund. Truth is I don't even remember where I got it.
Anyway, thanks to everyone who tried to help.
Former Member
Guest
Busybees is the same. I'll have to look a little closer. I have it on my table-saw and love it
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Especially blind hole internal threads.
Former Member
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@Susquatch make a brake for the lathe, use a bicycle brake system (Amazon), add a foot peddle and simple stop interrupt switch when you step on the foot peddle.
Yes, I had imagined something like that. Maybe a bit more robust than a bike brake though. I also imagined it connected to the VFD Brake System.
It all has to wait till I find an appropriate VFD Rated 2.5 or 3hp motor though. It's near the top of my spring summer ToDo list. But if it turns out like so many other of my projects it might not happen for another year. No worries though, i have an awesome lathe as is.
What about a hydraulic disc brake setup for a go kart?
I was thinking more like a 3ft wide foot plate on a pivot like other lathe foot brakes. I don't want to have to look for the pedal when I'm in panic mode.
But if I know you, you are not done with me yet!
I was thinking more like a 3ft wide foot plate on a pivot like other lathe foot brakes. I don't want to have to look for the pedal when I'm in panic mode.
But if I know you, you are not done with me yet!
Haha, we are on the same page with the foot brake size! I was thinking the pedal actuates the master cylinder of the hydraulic brake, you would just have to figure out how much throw the m/s needs and have an appropriate length lever on the other side of the pivot, probabaly need some springs to counter act the weight of the pedal, but I don't think it would be to difficult to impliment
I agree. I'll prolly fiddle with this before I get to the motor so it's ready to go when I am.
curmudgeon
(Steve)
Or, a bright coloured rubber band can serve the same purpose.
I like this. It can be seen during the action and is easily moved as appropriate. Easy peasy too! Bright yellow seems best!