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Tractorsport Flowbench Forum Archive • View topic - motor controller option?

motor controller option?

Discussion on general flowbench design

Postby 86rocco1 » Sun Jul 05, 2009 8:44 pm

I think it depends on the type of motor, if it's the AC/DC type with brushes typically used on vacuum cleaner motors, I don't think a variable frequency will work but if you're using a large induction motor to drive a blower, that would work great
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Postby cspeier » Mon Jul 06, 2009 1:43 pm

OK, the pictured one would work if my motors were 3-phase. They don't offer a single phase box.

However, I spoke with a man at Payne Control and this was his advise.

I'm going to run all 10 240v motors off a Payne Control. He recommended a Single Phase (240v), Variable Voltage Control for Transformer Coupled Loads. 80 amp wired parallel.

Now my question. What do you think about a control that is for a Constant Resistance Load? Isn't that the type in the plans?

I guess I need to know, What is the difference? Any clue?
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Postby cspeier » Mon Jul 06, 2009 4:11 pm

Well, I hope these people know what they are talking about! This is what I ended up with..

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Postby K-Star Automotive » Tue Jul 07, 2009 7:32 am

I bought my VFD fro my mill from AutomationDirect.com. There is a guy over on yellow bullet that works there named Mark. (he goes by road hammer) very knowledgeable and helpful. I was thinking the exact same thing about running one on a flow bench. Thinking you could reverse the drive and do exhaust with out changing anything in the bench, but they would need to be 220 motors. I don't think the 110 motors will reverse. I just hooked mine up this weekend. I love it, reverse at a touch of a button,speed contorl on a rotary dial, and all the extra features.

Keith
K-Star Automotive
 
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Postby cspeier » Tue Jul 07, 2009 5:27 pm

Yep Keith, it's the coolest thing EVER! It's crazy something that can do so many things is dirt cheap. Here is a photo of mine.

Image
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Postby cspeier » Wed Jul 08, 2009 12:35 pm

Thought some of you might be interested in this. This morning I had an electrician here at the shop. We checked exactly how many amps this bench was pulling with 8 240v motors rated at 4 amps each. The initial spike at start up was 53 amps and with a load on the bench it stayed steady at 23 amps through out a flow test.

food for thought.
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Postby 49-1183904562 » Wed Jul 08, 2009 2:59 pm

Yup I use a Hitachi SJ200 (sensorless Vector) on my one step pulley J head machine with this model and the bull gear engaged you get down to 5rpm with full torque it is awesome for cutting 3D seats without chatter. I am now going to add one with a bypass to my variable speed machine. I will also add that Drive Warehouse does ok on price but they also have a good selection of single phase models, I used on e of these on an old Delta cast iron 14" band saw and now I can do anything from wood to steel with just a blade change and a turn of a knob.

Rick

Just remember these are designed for Inductive motors not universal type (Brushes).
49-1183904562
 

Postby slracer » Wed Jul 08, 2009 8:06 pm

Rick, Since we decided that I could not use a HF router control on my band saw, could I use one of these? I was in the process of changing the pulleys to get the speed down, but still had a ways to go (1000 sfpm vs 200 sfpm target). Any suggestions as to brands or costs? -- Doug
I choose NOT to be an ordinary man because it is my right to be uncommon if I can! - unknown
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Postby Tony » Thu Jul 09, 2009 4:17 pm

Also known as the infamous "Warpspeed" on some other Forums.
Tony
 
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Postby cspeier » Thu Jul 09, 2009 6:00 pm

cspeier
 
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Postby coulterracn » Fri Jul 10, 2009 10:50 pm

"I know I'm in my own little world, but it's ok, they know me here"
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Postby cspeier » Fri Jul 10, 2009 11:08 pm

The 40 amp with a potentiometer is $375 and the 70 amp was $625 with a potentiometer.

All the Control Concepts products were price better than the Payne Controls.
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Postby coulterracn » Fri Jul 10, 2009 11:20 pm

Audie Technologies Depression Control is $860. It works with their FlowPro system.

Now if we can get the Control Concepts to work with the PTS DM.......

Ray
"I know I'm in my own little world, but it's ok, they know me here"
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Postby Tony » Sat Jul 11, 2009 12:51 am

Also known as the infamous "Warpspeed" on some other Forums.
Tony
 
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Postby coulterracn » Sat Jul 11, 2009 1:40 am

I agree, the time and extra expense kills the DIY.

I'm an old school electrician back before solid state control units. I can follow a schematic or diagram but I'm lost after that.

Ray
"I know I'm in my own little world, but it's ok, they know me here"
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