Thanks everyone. ?I¡¯m off to Anderson Ranch for a couple of weeks and then a major reconfiguration of the duct system in my shop. ?It will be a few weeks before I embark on this project¡
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Mike,
To answer your original question, the method shown (in the pdf) obviously works per the poster but it is not my preferred method. I used a potential relay to pull in the start caps in my RPC. As motor comes up to speed the voltage across potential relay drops and it cuts out. Same method is used in commercial control boxes for single phase motors.
Nothing wrong with what is recommended, it is just my preference.
Imran
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Mike,
For single phase it is a bit more complicated. You can control it with a contactor meant to start single phase motor with start capacitor or a start/run capacitor. The contactor can be controlled with a remote. I did not read thru the pdf and it may be doing something similar.
Finally, the contactor switch can be controlled with a current relay if you want to do auto start. If all machines with DC are 3p then all you need is a single current sense relay costing about $20.
I have not done this personally but happy to help. We can communicate privately if you have any questions.
Imran
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It is single phase. ?Automatic control would be nice, but remote control will work¡
Mike
Mike,
Is your RL125 single phase?
Do you have interest in auto control vs remote control?
Imran
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Is this still the best way to get this to work? ?I¡¯m in the process of fixing up my shop (for some reason, my spouse refers to it as a garage even though her assigned parking spot is in the driveway, at least in good weather).
