UK Crabtree Ceicon 3p DOL and overload

terminator · Feb 7, 2025

HI, have anyone got a wiring diagram for a Crabtree Ceicon 3phase DOL with overload? I have a couple salvaged from working machines that are no longer used, but with all the wiring removed! I've tried to rewire the overload to the contactor with conventional connections using various other manufacturers diagrams and my bad memory from previous work with DOL's, and can get the machine to start ok, but the stop/trip does not work when livened up, although when dead testing it with a simple continuity test, it works perfectly. I've tried all sorts of configurations but same thing happens when hooked up? I have 2 of these and get the same result on both? I've searched online and there are dozens of different makes, but I cannot find a Crabtree Ceicon diagram? Surely they cannot be massively different from all others make? Any help would be appreciated!

brianmoooore · Feb 7, 2025

Wiring and terminal markings of both contactor and overload are conventional.

James · Feb 7, 2025

Can you post a sketch of your wiring?
A dol starter is not something that is normally problematic.

terminator · Feb 8, 2025

James said:
Can you post a sketch of your wiring?
A dol starter is not something that is normally problematic.

Thanks James and Brian for replies. Yes, I agree that DOL's are not normally problematic! I have connected many over the years. I have wired these ones with conventional connections. The Crabtree ones use the overload trip as the 'Stop' (as do some other makes). That, is where I am having the problem! The connections between 95 and 96 between the overload remain live when the trip is pressed on the actual overload (with the front cover off), so obviously doesn't cut off the machine when pressed. So I think it must be back-feeding from somewhere, but I cannot figure out where, and in spite of several changes to the wiring configuration the problem remains? My first suspicion was that the overload trip was faulty but it trips fine when tested without power? And I am familiar with the conventional wiring config!