Limit switch mounted on the door
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I was wondering if any of you experts have used limit switches mounted on doors, which are used to shut down a certain device when the door is opened. I’m thinking of those cam switches from Siemens, but they’re not easy to install. On the other hand, the door position switches used for control cabinet doors are too fragile. Since proximity switches are all of the PNP type, the associated components don’t have the necessary power supply. I’m looking for a two-wire, passive dry-contact limit switch that would be suitable for this purpose. Thank you!
I don’t understand. I’ve only seen the contact switches on cabinets, and I think they work well. The cabinets aren’t opened and closed frequently, so if they break, it’s enough to ask the manufacturer to send a replacement. This doesn’t fall under instrument selection, right? . .
Well, you’re referring to the door position switch, the kind from Wyott – it’s too fragile
Think of it as the door to a room, a single-door one
I see. Then, if dry contacts are needed, use contact-type switches; some valves come with valve position feedback, which makes them more durable. Similar to this kind of thing
The spring rod over there – it looks good. Thanks!~
This post was last edited by wfywfywfy on 2016-7-1 at 12:09. If you use it for control, you need to connect it to a circuit, so choose a proximity switch. It’s a two-wire system; 24VDC or 220VAC can be used. It can be connected in series within the control circuit. The main thing to consider is the circuit current, as the circuit current of proximity switches is generally below 200mA