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Generator/regulator wiring help needed

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Mike L.

03-29-2002 10:45:47




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Can anyone tell me what the A and F stand for on the generator and what is the explanation of the routing of the wires from the ammeter to the generator and regulator. 45 JD B with no color coded wires that were cut off. Two wires and one is hot, the hot wire goes where? Thanks for your patience.




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Clooney

03-29-2002 13:40:24




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 Re: generator/regulator wiring help needed in reply to Mike L., 03-29-2002 10:45:47  
Mike, (F)= field,,,,(A)=armature
~By your other posts below it sounds like you have a "cut-out relay" & not a VOLTAGE REGULATOR.
~If that is true (the 46 should have been factory equipped with a cut-out relay) the battery wire from the ammeter should hook to the (BAT) terminal on the cut-out relay,,, the (A) post [bigger of the two] on the generator should hook to the (GEN ) or other terminal on the cut-out relay,,, & the (F) post on the generator [smaller of the two] should hook to the resistor terminal on the head light switch at the dash.
~If you are missing the factory headlight switch you will either need a new one or convert your tractor to a later voltage regulator instead of a cut-out relay, many have been converted & it is quite simple (sort of).
~Any other questions, or if you want to convert to a voltage regulator just post back or E-Mail..... ..... ..... .....

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Mike L.

03-29-2002 11:04:00




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 Re: generator/regulator wiring help needed in reply to Mike L., 03-29-2002 10:45:47  
A little more info: Magneto,6 volt positive ground, anything on the web on six volt circutry?



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Mike L.

03-29-2002 11:58:52




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 Re: Re: generator/regulator wiring help needed in reply to Mike L., 03-29-2002 11:04:00  
One more time, the regulator is rectangular with just two posts. What I'm asking if you don't want to explain electricity to me is where the hot wire connects first then from there on. I'm assuming the other wire would connect to the remaining post on the generator. Thanks again



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Clooney [how it works]

03-29-2002 15:23:14




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 Re: Re: Re: generator/regulator wiring help needed in reply to Mike L., 03-29-2002 11:58:52  
Mike, you want electricity talked, we'll talk electricity..... .....
~The Deere 3 brush type generator charging rate is controlled by varying the current strength in the field coils. On your B, one end of the field windings are hooked to a movable 3rd brush that contacts the commutator between the armature output brush & ground brush, the field strength is controlled in 2 ways, the current to the power side of the field windings is varied by moving the 3rd brush either closer to or farther from the armature output brush, that limits the total output of the generator to limit battery overcharging & can be set higher for cold weather or short run times & set lower for long run hours at high throttle settings. The ground side of the field is controlled by the resistor or a direct ground in the headlight switch. When the tractor is run with the headlights in the off position the field wire going to the headlight switch is grounded through a resistor in the headlight switch & limits the strength of the generator field to less than full so the generator output is lower. When the tractor is run with the headlight switch in the on position the resistor is by-passed & the field wire from the generator is connected directly to ground thereby allowing full strength in the generator field & max charge is then controlled by 3rd brush position & generator RPM.
~Now we get to the cut-out relay, all the cut-out relay does is disconnect the generator from the battery when the generator output is lower than battery voltage, such as low idle or when the tractor is not running. If the generator isn't disconnected from the battery, the battery would try to run the generator as a motor & run the battery down or burn out the generator. The charging system will work just fine without the cut-out relay "IF" the generator output voltage is "ALWAYS" higher than battery voltage (that is impossible at low idle or with the generator not spinning) & the battery wire from the ammeter is hooked directly to the Armature post on the generator. So all the cut-out relay really is, is a voltage sensitive switch that knows when to disconnect the generator from the battery.....
~Any questions or something you don't understand post back & we'll talk _lectricity some more..... .....

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