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Teco L510 VFD help

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Forum topic by Luthierman posted 05-14-2017 12:55 AM 489 views 0 times favorited 4 replies Add to Favorites Watch
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Luthierman

178 posts in 926 days


05-14-2017 12:55 AM

Topic tags/keywords: vfd 3 phase teco

Good evening, afternoon, or morning depending on when this is read and where one might be in the world.

I have been running my old rockwell unisaw for about a year with this handy device and have been absolutely thrilled with its ability to run 3 phase power. It is really cool on a lot of levels. However, with where I have the VFD mounted, it isn’t always conducive to safety as the VFD is mounted independently from the saw. There is no OH CRAP! switch wired into this as of yet, which hasn’t really been a problem because it is mounted very close to the saw. But, there are some times when I wish it were closer, like right where a traditional switch would be located. I didn’t want to put it there because of the amount of dust it would have to endure. Precision electronics and dust don’t get along to well. This I know. Anyway, I know there is a way to do this but I cant seem to locate it in my manual as it seems I dont possess the full manual, just the startup/condensed version. How does one wire up an external control switch to operate the VFD remotely via wire? To be specific, I want to use the switch on the saw to control the VFD through some of the low voltage terminals. This is possible right? I would love to hit the off switch on my saw and have the VFD start to slow the motor. By no means am I suggesting running the power through the switch, but rather to communicate to the VFD with the switch when to turn on and off. Make sense?

I searched for a while via regular google but couldn’t really get any definitive “put wires here and here” set parameters to “x”. I am willing to bet that someone on here has done this already and can save me the headache of sorting and sifting through the plethora of information that I don’t know enough about.

Thanks in advance, ladies and gentlemen.

-- Jesse, West Lafayette, Indiana


4 replies so far

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MrUnix

6010 posts in 2038 days


#1 posted 05-14-2017 01:02 AM

To be specific, I want to use the switch on the saw to control the VFD through some of the low voltage terminals. This is possible right? I would love to hit the off switch on my saw and have the VFD start to slow the motor. By no means am I suggesting running the power through the switch, but rather to communicate to the VFD with the switch when to turn on and off. Make sense?
- Lutherman

Absolutely… they are designed to be used with three-wire control… and the L510 is even easier than it’s cheaper FM50 cousin.

As for mounting on the saw… that’s what I did on my Uni by incorporating it into the motor cover, and using the existing start/stop control station to control it:

3-wire control wiring is discussed in the manual, starting around page 4-34.

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

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Luthierman

178 posts in 926 days


#2 posted 05-14-2017 01:06 AM

Thats a beauty, Brad.

So how do you actually wire up the switch then?

-- Jesse, West Lafayette, Indiana

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MrUnix

6010 posts in 2038 days


#3 posted 05-14-2017 02:07 AM

You can find the manual online all over the place, such as here.

Here is the wiring diagram for 3-wire control from the manual. You can ignore the fwd/rev wiring.

Also, it’s pretty easy to also wire in an “OH CRAP” emergency off switch… just use one of the other multi-input terminals (S4 or S5) to hook up a emergency off paddle switch, which will work independent of the normal start/stop control station.

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

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Luthierman

178 posts in 926 days


#4 posted 05-14-2017 02:06 PM

Thanks, Brad.

I think I get it. Next step is the terminals on the switch. If it doesn’t work, Ill post a pick and you can tell me what I did wrong.

Also, thank you for giving me the link. This is really helping.

-- Jesse, West Lafayette, Indiana

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