Bought an Omga 3 phase 220v chop saw off CL. Bought a RPC and the saw runs perfectly. Any ideas on how to trigger a 110v dust collector when I start the chop saw? Thanks in advance. Scott
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Bought an Omga 3 phase 220v chop saw off CL. Bought a RPC and the saw runs perfectly. Any ideas on how to trigger a 110v dust collector when I start the chop saw? Thanks in advance. Scott
Scott, you just need a relay. Wire it into one of the legs after the switch. The relay will trigger the power supply for the dust collector. There are all sorts of fancy ways to do this, but the general principal will always be the same. You can find components that will allow the dust collector to run a bit after the saw is shut down for example.
Thanks for your help. I get the relay principle, but I'm confused about which switch you're referring to. The relay goes into one of the legs of the three phase power so when the saw is activated the relay switches power to the DC? Thanks again.
Thats right, I should have specified the relay pulls control circuit power after the saw switch. You'll want a 110 volt control circuit on your relay, to control the 110 volt single phase supply. In a pinch, or if you are so inclined, you could probably power the dust collector off one of the three phase legs directly, but you stand the risk of overloading some part of the circuitry. The relay is the correct way, but technically not the only way.
You could put a current sensor on one of the wires. Wire passes through core of sensor, add a delay on break cube timer so DC will run on for a few seconds to clear the pipes.
I'm pretty ignorant about 3 phase power. Do 3 phase circuits typically include a neutral? I know single phase 240 v. circuits may not. If no neutral, could Scott use 2 wires to get 240 volt single phase to control a relay?Quote:
Originally Posted by Steve Rozmiarek
If possible, a wiring diagram of the various suggestions would be appreciated. Thanks.
I think I would install a 2-way, 3-way or 4-way switch for the collector right beside the chop saw.
Todd
here's a plug and play solution that doesn't involve electrical engineering:Quote:
Originally Posted by Scott Snyder
http://www.ivacswitch.com/index.action
check out their ivac pro line. not the cheapest alternative but they are good products ( i use the ivac switch with a few supporting items to power a DC with both 110 and 220v tools) and their products will accommodate 3 phase tools. their support is exemplary. they've provided me with configuration diagrams enabling me to successfully daisy chain units together to automatically activate both my DC and shop vac with any stationary power tool in my shop. they even replaced a unit that failed and was out of warranty, gratis.
Quote:
Originally Posted by Joseph Tarantino
That stuff looks really good, I'd go that way for simplicities sake.
A wiring diagram of what is there would be useful to see where a contact could be installed. Plus, depending on what type of dust collector you have, you may not want to turn it on and off with each operation of a saw. Basically you want to work in a timer somehow, but without knowing what is there, it's tough to say how to add to it.Quote:
Originally Posted by Scott Snyder
this has been shown before, but it's probably the ultimate in hobbyist shop dust collection:
http://www.americanwoodworker.tv/vid...st-collection/
Looking through the newest FWW, saw an add for www.grngate.com
Looks like they have put together a package kit that includes the sensor coil and gates, I bet they have a solution to start the collector as well. Looks pretty slick.
Thanks for all the suggestions. I think I'm going the Ivac route.
If the tool has a magnetic starter, use a aux. contact to control the DC. This only will work when parts & accessories are avail. for the mag starter,with off-breed Grizzly or the like garbage or obsolete starters problems will occur.
Rollie is right on. You need a set of normally open mechanical auxiliary contacts. These contacts mount on the 3 phase motor starter and have the "hot" leg of the circuit your dust collector is on wired to them. So, when the motor starter engages to run the 3 phase saw, the auxiliary contacts close and energizes the dust collector's power. This is really very easy to do, I have wired these sorts of circuits numerous times. It is easier than you think!
Quote:
Originally Posted by Rollie Meyers
I have been using a remote controlled DC which works well for me, I just clip the fob to my jeans, but I blew that.
I just bought a used 10hp 3PH DC and I have to run it off of the converter, and it will have to be started first with some tools and second with others. Then I add in the 220 and 110 tools, and I have read enough that I am going to hire an electrician to figure it out. I may see about getting a ten horse single phase motor for the collector so I do not always have to run the converter, and have thought about getting a dedicated Phase Perfect for the DC. All costs money though.......
Wish I knew more about electricity........
Larry
In my old shop, my Dust Collector was 3 phase and I used a rotary phase converter. The sequence was
- turn on RPC
- turn on DC
- turn on machine(s)
- use machines
- turn off machines(s)
- turn off DC
- turn off RPC
For every stinking machine that generated dust. I even did it for the drops for the router table and miter saw. (Well, truth be told - sometimes I didn't for the miter saw... Guilty as charged.)
And, anyone else in the shop had to be told:
- flip the gray switch (RPC) first, then the white switch (DC)
- turn on machine, use, turn off
- flip the white switch (turn off DC), then the gray switch (turn off RPC)
I need a better solution in my next shop.
Me too. I was told by a motor guy to start with the smallest motor, then biggest so most tools first except the planer which is bigger than the DC.
My problem is my mind gets distracted from the work at hand with these little details and I have no clue how to make it all automatic with this menagerie. The two things I miss from my commercial building are space and unlimited three phase power. I am on the edge of a large state forest now, so at the end of the line. When I flip on my 50hp converter my neighbors lights dim.
I really like the idea of the Phase Perfects, but its a lot of money that does not really help me do anything that I can not do now.
Larry