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Emerson Electric Motor - info needed
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<blockquote data-quote="Perplexed" data-source="post: 3872166" data-attributes="member: 7157"><p>The plot thickens - I removed the end cap where the wires came out, and revealed an interesting arrangement. The end cap has a pair of copper strips with Wire #3 soldered to one, and another wire soldered to the other strip leads to the exposed windings on the end of the stator. Wire #1 also goes to these exposed windings, and #2 and #4 appear to go to the wrapped windings, like on a desktop fan. Then there’s what looks like a centrifugal switch on the shaft of the rotor, and this is a first for me. The switch has a flat copper ring that appears to be in contact with the two copper strips when the end cap is installed. I moved the two spring-loaded arms of the centrifugal switch outward, and the copper ring was lowered on the shaft. This suggests to me that the exposed windings are a start winding, and once the motor is running, the centrifugal switch disconnects power to this start winding. Correct?</p><p></p><p>I also tried switching the paired wires 1-2 and 3-4 to 1-4 and 2-3 and applied power, and the motor ran in the opposite direction (CCW).</p><p></p><p>So this looks like it could be a reversible motor, which means I need to figure out a switch that would shift the pairings and also apply power. The DPDT switches I’ve seen don’t do any pair shifting - they merely apply power to one fixed pair of wires or the other. Is there a switch that would accomplish this pair shifting - or is the motor meant really to go only in one direction?</p><p></p><p></p><p>[ATTACH=full]308341[/ATTACH]</p></blockquote><p></p>
[QUOTE="Perplexed, post: 3872166, member: 7157"] The plot thickens - I removed the end cap where the wires came out, and revealed an interesting arrangement. The end cap has a pair of copper strips with Wire #3 soldered to one, and another wire soldered to the other strip leads to the exposed windings on the end of the stator. Wire #1 also goes to these exposed windings, and #2 and #4 appear to go to the wrapped windings, like on a desktop fan. Then there’s what looks like a centrifugal switch on the shaft of the rotor, and this is a first for me. The switch has a flat copper ring that appears to be in contact with the two copper strips when the end cap is installed. I moved the two spring-loaded arms of the centrifugal switch outward, and the copper ring was lowered on the shaft. This suggests to me that the exposed windings are a start winding, and once the motor is running, the centrifugal switch disconnects power to this start winding. Correct? I also tried switching the paired wires 1-2 and 3-4 to 1-4 and 2-3 and applied power, and the motor ran in the opposite direction (CCW). So this looks like it could be a reversible motor, which means I need to figure out a switch that would shift the pairings and also apply power. The DPDT switches I’ve seen don’t do any pair shifting - they merely apply power to one fixed pair of wires or the other. Is there a switch that would accomplish this pair shifting - or is the motor meant really to go only in one direction? [ATTACH type="full" alt="E4DAF20B-64A9-41B7-AED5-76B31B6D8C2A.jpeg"]308341[/ATTACH] [/QUOTE]
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Emerson Electric Motor - info needed
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