The Shop > Electronics & IC Programing
single phase motors.
DavidA:
Here is the supplied diagram and my proposed connection to motor.
The connection to the motor are exactly as Rob's picture shows.
Rob.Wilson:
Looks good to me Dave :thumbup:
Rob :zap:
DavidA:
Rob,
Thanks.
Anyone find a problem with it before I wire it up, switch it on , and shut down the national grid ?
Dave.
(Note to self: Wife needs to buy me a single to three phase converter this Christmas)
DavidA:
As it turned out there was a problem. Motor ran forward, but not backward.
After a couple of checks of the wiring I striped off all the switching and re-assembled as a single direction motor just using the old start button. It ran with no problem. Even in reverse when I had changed the straps around.
There was nothing wrong with the way I wired the switch. double checked it.
So I have come to the conclusion there is an error in the supplied wiring diagram.
Anyway, I know how it should be wired thanks to some of you guys. Earlier today I traced all the connections on the reverser switch and it is actually comprises of 16 single pole switches. Eight work for the forward motion and eight for reverse. Lots of links needed.
I'll let you know exactly where the problem was when I find it.
One chunky double pole double throw switch would do the same thing as this ghastly thing. Cost me a fortune.
Dave.
Bluechip:
--- Quote from: DavidA on June 06, 2013, 05:02:27 PM ---As it turned out there was a problem. Motor ran forward, but not backward.
After a couple of checks of the wiring I striped off all the switching and re-assembled as a single direction motor just using the old start button. It ran with no problem. Even in reverse when I had changed the straps around.
There was nothing wrong with the way I wired the switch. double checked it.
So I have come to the conclusion there is an error in the supplied wiring diagram.
Anyway, I know how it should be wired thanks to some of you guys. Earlier today I traced all the connections on the reverser switch and it is actually comprises of 16 single pole switches. Eight work for the forward motion and eight for reverse. Lots of links needed.
I'll let you know exactly where the problem was when I find it.
One chunky double pole double throw switch would do the same thing as this ghastly thing. Cost me a fortune.
Dave.
--- End quote ---
Alas! Probably not :(
If you reverse the connections to the start winding/capacitor while it is still running the chances are it will just slow down and growl at you without changing direction, unless it kicks out a breaker.
What you need the switchery to do is:
(1) Remove all power to the motor until it has stopped.
(2) Change sense of start winding. ( Or run )
(3) Re-apply power.
Dave BC
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