Gallery, Projects and General > How do I??

poorly seig c3

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davidcurtis021:

--- Quote from: John Rudd on June 06, 2017, 03:32:17 PM ---Well is it 56 mV or 5.6 Volts? Hmmm....Depends on what range you have set on your meter.....

Ok, looking at the front of the regulator ( where the numbers are...) the connections are; 1,2 &3 left to right.....connect your meter Black lead to the tab, now connect the Red lead to pin1.... What reading do you get? Set the meter to the 20 range DC volts....then transfer the Red lead to pin3, what reading is on the meter?
Apologies if this is all simplistic, but I dont know what electronic knowledge you have....( I'm a retired engineer,with an electrical/electronic background)

--- End quote ---

John when you say connect the black lead to the tab do you mean the silver part on top of the regulator. (just a double check before i do anything to make matters worse)

John Rudd:

--- Quote from: super7 on June 06, 2017, 04:11:55 PM ---Is it not strange that you are getting 0 ohms across the secondary coil in the first pic? Is that not indicative of a dead short ?

--- End quote ---
Super7, with the meter set to uts lowest range in Ohms, the transformer's dc resistance is so low, that it will practically read almost 0 ohms...( the secondary winding that is, because it has so few turns)

hermetic:
You may be over thinking this! You say you have power to the stop switch, is there power coming out the other side of the stop switch? Did you use this stop switch to stop the machine? If so, check it is not stuck in the off position. Some of them lock off, and have to be reset to work again. Very unusual for something to fail with no power on, and also fail to even give a twitch when turned back on.
Hope this helps
Phil

John Rudd:
Have you got power to the speed control board? ( back to what hermetic was saying.... :thumbup:)

davidcurtis021:
thanks Hermetic  and john
yes i do have power out of the stop switch  my metholody so far has been to follow the power from the mains, into and out of the emergency stop switch down to the control board and into the transformer then at the transformer output is where i began to suspect i may have found a problem, but as said above i'm at level 0 when talking elecrtricals all i'm really capable of is following instructions and reporting back.

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