HELP Big Dog Lathe CJ0618 Wiring

[ted34]

Just had a second hand 7x14 big god metalwork (same as CJ0618) lathe arrive and all in good condition apart from was partially stripped for posting. I have 3 cables coming out from under the headstock. One is the mains cable, one is the motor cable and one goes to the switch for the perspex guard. Only problem is the two brown cables from mains and perspex guard switch are loose and cant see where they go. Have tested the mains cable and whats strange is the brown is actually neutral and the blue the live (both blue cables for mains cable and switch go to main emergency switch.

Here is photo of mine:



Here is photo from the review: 7x14 Mini Lathe
(as can be seen it is wired correct but photo above doesnt show where these wires connect)


Can anyone help?

[john_100]

Hi ted34

have a look here :-

Wiring and parts?


it may help you work it out


John

[ted34]

Cheers, been looking at that thread but looks like more pcb's to what i have and no chuck guard switch. I'm thinking maybe the two wires just join together and then power only goes to e stop switch if chuck guard closed

[john_100]

Hi ted34 ,

thats what I expected
one thing to remember this puts the guard switch before the lathes
main on off switch and will always be live until the mains supply is disconnected

another version of the E-stop / no volt release switch is made that has one end of the coil
connected to a 5th terminal
this puts any interlock / guard switch on the switched side of the E stop switch

late last night I looked for another post for your version of the lathe
but failed
I think it was on madmodder.net thats moving to a new service provider
this weekend

the interlock board in the other post is now combined with the powersupply for the digital tacho you have

John

PS looking at the second picture
the mains wires going to the stop switch are blue and black
this is what you expect mixing US and UK coded wires
if the US white mains live wire is connected to the UK live brown limit switch wire

[john_100]

Hi ted34

if they wire the guard switch in th live supply
the diagram should be correct, note -the guard switch will always be live

but its possible they break the normal rule and switch the mains neutral !

John