Non-(easily)-resettable emergency stop switch

[skotl]

Yes, Klockner Moeller. Good stuff, not £10 more like £50. You do have to pull them very hard to get them to release. I’ve spoken to many a user with a ‘broken’ machine, and even embarrassingly sent a spark out to one only for them needing to be pulled out. There are two types, the yellow one is latching (yours) the grey is non-latching (no good through an NVR). They are quite tough, I’ve only seen one or two broken, probably by bored kids or users trying to lever it out with a crowbar before realising some other part of the e-stop circuit is the problem. If it really is broken PM me your address and I’ll dig out a used one you can have. There are also NO (normally open) and NC (normally closed) contact blocks - they’re supplied with both so it could be wired up wrong.

Cheers for that.

Yeah - as above, a previous owner had hooked up the NO block presumably because the switch had latched and they couldn't figure out how to unlatch it,
So are you saying that I should be able to just pull out the mushroom, brute-strength-and-ignorance-wise?

 

[Ali]

Yep. I always tell them over the phone - push it in first, if you don’t feel / hear an audible ‘click’ it needs pulling out, pull away. If you do hear a click it when pushing, it was already out and the machine should have run. (If that makes sense?)

 

[skotl]

Yep. I always tell them over the phone - push it in first, if you don’t feel / hear an audible ‘click’ it needs pulling out, pull away. If you do hear a click it when pushing, it was already out and the machine should have run. (If that makes sense?)

It does! I'll be bolder in my attempts to pull it out - cheers!

 

[armalites]

We've all been in those situations where you needed to put more effort into your pushing and pulling

 

[skotl]

Yep. I always tell them over the phone - push it in first, if you don’t feel / hear an audible ‘click’ it needs pulling out, pull away. If you do hear a click it when pushing, it was already out and the machine should have run. (If that makes sense?)

Update! First time back in the garage and I can confirm that you know your emergency stop buttons! A half-decent pull and it's back in operation and ready to go

 

[Ali]

Update! First time back in the garage and I can confirm that you know your emergency stop buttons! A half-decent pull and it's back in operation and ready to go

Good stuff. Probably better than a key switch for keeping your lad off the machines. For personal use I usually modify mine: