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Installing Nvr Switch With E-Stop - Problem!
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<blockquote data-quote="Sidewinder" data-source="post: 367571" data-attributes="member: 9512"><p>OK, it's wired wrong from what I can see.</p><p></p><p>I can't believe that it came without instructions!</p><p></p><p>Next, an E-Stop is not normally a 2 pole device, it would appear from the pics that you have a normally open and a normally closed contact on the e-stop.</p><p></p><p>The first thing you need to establish is if this is so.</p><p></p><p>Also forget about switching the N, just connect it directly to the motor, you will also need to connect one other terminal to the N as well, but you need to identify that first.</p><p></p><p>Once you have established if you have NO &amp; NC on the e-stop, then you need to look at the NVR switch.</p><p></p><p>I don't think that those are the only connections on it, it should have a1 &amp; a2 terminals.</p><p></p><p>Terminal numbering follows a defined sequence from the ISO/IEC standards.</p><p></p><p>1/2 are the first pair of NC 21/22 are the second pr, 31/32 the 3rd etc.</p><p></p><p>3/4 are the first pair of NO, 23/24 the 2nd pr, 33/34 the 3rd etc.</p><p></p><p>a1 &amp; a2 are the terminal markings for the coil device on a contactor.</p><p></p><p>It does not look very well made, and as App87 has said, you really should have overload protection on the motor.</p></blockquote><p></p>
[QUOTE="Sidewinder, post: 367571, member: 9512"] OK, it's wired wrong from what I can see. I can't believe that it came without instructions! Next, an E-Stop is not normally a 2 pole device, it would appear from the pics that you have a normally open and a normally closed contact on the e-stop. The first thing you need to establish is if this is so. Also forget about switching the N, just connect it directly to the motor, you will also need to connect one other terminal to the N as well, but you need to identify that first. Once you have established if you have NO & NC on the e-stop, then you need to look at the NVR switch. I don't think that those are the only connections on it, it should have a1 & a2 terminals. Terminal numbering follows a defined sequence from the ISO/IEC standards. 1/2 are the first pair of NC 21/22 are the second pr, 31/32 the 3rd etc. 3/4 are the first pair of NO, 23/24 the 2nd pr, 33/34 the 3rd etc. a1 & a2 are the terminal markings for the coil device on a contactor. It does not look very well made, and as App87 has said, you really should have overload protection on the motor. [/QUOTE]
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Installing Nvr Switch With E-Stop - Problem!
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