Vfd???

You don't need anything extra if you want to operate it via face panel.
Otherwise you'd need a 10K POT (anything from 4.7K to 20K should work
as fine) for RPM control and 2 SPST maintained switches - total of under $10
outta door at your local Radioshack.
 
Yea. Operation normally with box lid closed. Forward, reverse, speed control and emergency stop are all on the outside of the box. No real need to get inside unless you need to change parameters. A window to see the display might be nice but I don't see the need in my case. The switches came from an old industrial machine control box picked up at a scrap yard. Don't remember the specs on the pot but it's in the manual which anyone can download on the Factory Mation site I think.
Matt
 
Matt & Rashid...

Between the two of you, I've gotten a lot better understanding about VFD's... thanks a lot.

Would a person need to change parameters if they were moving the VFD box to three different 3ph motors of 1, 1.5, 2hp?

Mike
 
rashid11 said:
You don't need anything extra if you want to operate it via face panel.
Otherwise you'd need a 10K POT (anything from 4.7K to 20K should work
as fine) for RPM control and 2 SPST maintained switches - total of under $10
outta door at your local Radioshack.
Click to expand...

So then just to be sure a switch like this...
http://www.radioshack.com/product/i...=spst+switch&kw=spst+switch&parentPage=search

And a 10k pot like this...
http://www.radioshack.com/product/i...entiometer&kw=potentiometer&parentPage=search

Those would work?
 
I don't change any parameters when moving between machines. The only parameters I even changed from factory settings, I think were ramp up time to 5 seconds, nice to see belt tracking good and everything smooth before it hits full speed and deceleration time. Nice to have it stop faster and not coast to stop. In fact I want to add a braking resistor because I'm impatient waiting on the built in braking to stop the grinder for a belt change.
Matt
 
Folx usually use the traditional-looking switches like this one:

http://www.radioshack.com/product/i...=spst+switch&kw=spst+switch&parentPage=family

The POT is fine although the shaft looks mighty long on that pic ... they probably just used a wrong picture.

The dynamic breaking feature of the VFD will provide a very quick stop for you. Unlike with a lather or a mill, you don't quite need that belt to stop on a dime. With lathe for a example, you want to stop ASAP so you can measure the part or remove it etc. With grinder, you normally have more patience - as you marvel at the grind etc :)
 
I don't know the lingo but the switch I used is off in the center, reverse to the left and forward to the right. Admittedly I have never used reverse but it's there if needed. Used the emergency stop just because I already had the switch and it was an easy add. :thumbup: admiring the grind :)
 
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