Question Boy
Stainless
- Joined
- May 11, 2005
- Location
- Napa, California
Anyone have one to sell?
Thanks,
QB
Thanks,
QB
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Along with their disadvantages like a need to rewire machinery/loss of the machine's own controls and ability to serve only a single machine motor.I know the OP asked about rotary phase converters but with such a small motor, and vfd's being so cheap, why not get a vfd and have all the advantages they have?
L7
I have one made by convert-a-phase, not much use on it, I needed 15 hp. Nice unit with a real baldor rpc "motor"
I think it is 10 hp though, will have to double check the size if you are interested.
$500, down near Paso Robles.
I know the OP asked about rotary phase converters but with such a small motor, and vfd's being so cheap, why not get a vfd and have all the advantages they have?
L7
I have another machine fitted with VFD, but I want to keep the electrical and controls intact on this new machine.
Thanks
QB
You lost me here. Could you please elaborate on how it is better to keep machine controls with VFDs vs. RPC or 3-phase service?The reason that all of my machines are on VFDs is to KEEP the Original Controls ie same push button functions.
2¢
You lost me here. Could you please elaborate on how it is better to keep machine controls with VFDs vs. RPC or 3-phase service?
You lost me here. Could you please elaborate on how it is better to keep machine controls with VFDs vs. RPC or 3-phase service?
my guess is its because you walk up to the machine, turn it on and go....vs going and turning the rpc first and putting up with the drone. I've an RPC its good if you have a lot machines with larger motors, but cant' imagine wanting one for a small motor like 1.5, and the VFD should be a lot cheaper. Just wire the vfd controls into the machine's.
Then again all of this is OT....sorry OP, don't have one
My question was addressed to WHHJR who has multiple 3-phase machines equipped by VFDs. He stated that he did so to "KEEP the Original Controls". I guess he meant to "PRESERVE the Original Controls" (by not using them), so I asked for clarification.
My question was addressed to WHHJR who has multiple 3-phase machines equipped by VFDs. He stated that he did so to "KEEP the Original Controls". I guess he meant to "PRESERVE the Original Controls" (by not using them), so I asked for clarification.
lol, yeah not using is one way. For the pedantic, a more accurate description is "preserving the functionality" of the original controls....most important one being the on/off switch
The reason that all of my machines are on VFDs is to KEEP the Original Controls ie same push button functions.
2¢
I'm not trying to tell you what to do. I genuinely wanted to know why you stated this because, as Jim explained above, the need to rewire or eliminate machines' own control is one of the main drawbacks of the use of VFDs. So to me, your statement sounded like "I always cross intersections on red light because I care about safety"....separate star requirements are unacceptable to me.
Your opinions are yours, and mine are mine. In the beginning I had a static converter with idler motor It was a PITA for the above reasons well stated by Thermite. MY choice My money.
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