E-Stop Switch That Disables 2 Different Circuits

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rs14smith

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Is there an E-Stop on the market that has the ability to disable 2 different circuits when the e-stop push button is pressed in? Most I see only allow you to wire up 1 circuit, but I have a circuit that is 24v and controls certain devices, then another circuit that is 36v and controls a completely different operation.
 
This is a toggle switch and you want a push button switch. But the action is the same.
On the left side there are three terminals. On the right there are also three terminals, you can only see the one.
The left side is not connected to the right side. (two different switches)
You can connect 24V to the center on the left and 36V to the center on the right side.

This is a DPDT switch. Double Pole Double Terminal

 
Perhaps you should clarify what you mean?, I've no idea what an E-Stop is?.

But presuming it's some kind of switch that you can't get multiple pole versions of, then a simple double pole relay would do what you want.
 
Nigel Goodwin said:
Perhaps you should clarify what you mean?, I've no idea what an E-Stop is?.

But presuming it's some kind of switch that you can't get multiple pole versions of, then a simple double pole relay would do what you want.
Click to expand...

Attached is an E-Stop. E-Stop stands for "Emergency Stop". It's an easy method for killing power to a system if there is an "emergency". Normally they are hardwired and do not rely on other devices to kill power to the system.

So I am trying to avoid using just a toggle switch or relay.
 

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An E-stop (ideally) controls a relay-circuit. When the E-stop is pushed, the relay circuit drops out, causing a long walk to the 'Start' button, during which the reason for the failure is contemplated.
The control-relay will usually have a set of contacts available to enable/disable your 36 volt equipment: if not, another relay can be paralleled on it.
Wade Hassler
 
You did not state these conditions in your first post.

No amount of "more experience" could have divined your true needs from a query that was incomplete...
 
Moeller manufacture Modular Stop Buttons, you simply add the switch modules that you require by snapping them onto the rear of the switch. They also come with various legend plates. Not cheap though, but good quality.
 
Industrial controls need to comply to a standard, here in the uk there are different ones, the most common being en60204-1, this states that e stop systems must use 'safety relays', a safety relay monitors the state of the wirng and contacts, double poles are used for redundancy, if one contact welds or falls to bits the relay picks up on it and disables the machine, or if one side of the switch contacts wiring shorts to ground or a voltage the same happens.
Pilz make a range of safety relays.
 
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