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Student & Learning Zone - City & Guilds
How to wire a contactor
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<blockquote data-quote="roys" data-source="post: 78961" data-attributes="member: 5044"><p>Hi P</p><p></p><p>Still not sure on the contactor bit of your drawing, so it might be right, just not sure. So I have managed to get a scanner to do a drawing for you using your general layout. I have done the drawing with start and stop buttons that don't stay down as this is the most common and what you are likely to get at college, because of this I have used one of the contacts on the contactor as a retainer. The retainer contact is the one that is in paralell with the start button. Sorry if you know this already, so once the start button is pressed and released the contactor remains in as the live is kept on the coil via the retainer contactor. The only way to break this circuit is to press the stop button, this breaks the supply to the coil so dropping out the contactor feed and releasing the retainer contact. I have also done double pole switching on your lamps (L&amp;N) both getting switched.</p><p></p><p>However how do I import the drawing onto here, as it is above the PDF file format size limit? my drawing is 122KB and in PDF format.</p><p></p><p>Cheers Steve</p></blockquote><p></p>
[QUOTE="roys, post: 78961, member: 5044"] Hi P Still not sure on the contactor bit of your drawing, so it might be right, just not sure. So I have managed to get a scanner to do a drawing for you using your general layout. I have done the drawing with start and stop buttons that don't stay down as this is the most common and what you are likely to get at college, because of this I have used one of the contacts on the contactor as a retainer. The retainer contact is the one that is in paralell with the start button. Sorry if you know this already, so once the start button is pressed and released the contactor remains in as the live is kept on the coil via the retainer contactor. The only way to break this circuit is to press the stop button, this breaks the supply to the coil so dropping out the contactor feed and releasing the retainer contact. I have also done double pole switching on your lamps (L&N) both getting switched. However how do I import the drawing onto here, as it is above the PDF file format size limit? my drawing is 122KB and in PDF format. Cheers Steve [/QUOTE]
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How to wire a contactor
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