Hi--been coming here from Google for a long time but hopefully I won't decrease the signal-to-noise.
I've been putting together a 10hp RPC from the 30hp integrated panel plans from this site ("/phaseconverter.pdf"). I've already tested it with the Unipoint saw I'm going to run and it works great.
The only quirk is with the potential relay. I got a $12 90-66 clone from eBay and have it wired as per the plans,
1 - one side of the coil of a 60 amp contactor for the start caps and extra L1/L2
2 - from a N-O switch, fed from L1
5 - the generated leg from the idler
As long as I hold in the N-O start switch for the motor, the relay works correctly and cuts off the start contactor after about a second. But when I release the switch, the potential relay starts making a racket, like it's opening and closing constantly.
Has anyone else had this issue? I don't mind just permanently bypassing the relay (I can hold a button in for one second) but it seems a little bit of a waste not to try to use it, and it would be a nice safety. Maybe a ferrite bead on one or more of the connections would help? If it were a DC circuit I would suggest a pull-down resistor since it seems kind of like a "floating input" problem. The relay is bolted to the panel and the panel is grounded.
I've been putting together a 10hp RPC from the 30hp integrated panel plans from this site ("/phaseconverter.pdf"). I've already tested it with the Unipoint saw I'm going to run and it works great.
The only quirk is with the potential relay. I got a $12 90-66 clone from eBay and have it wired as per the plans,
1 - one side of the coil of a 60 amp contactor for the start caps and extra L1/L2
2 - from a N-O switch, fed from L1
5 - the generated leg from the idler
As long as I hold in the N-O start switch for the motor, the relay works correctly and cuts off the start contactor after about a second. But when I release the switch, the potential relay starts making a racket, like it's opening and closing constantly.
Has anyone else had this issue? I don't mind just permanently bypassing the relay (I can hold a button in for one second) but it seems a little bit of a waste not to try to use it, and it would be a nice safety. Maybe a ferrite bead on one or more of the connections would help? If it were a DC circuit I would suggest a pull-down resistor since it seems kind of like a "floating input" problem. The relay is bolted to the panel and the panel is grounded.