routercnc_MK3

[routercnc]

Small update. Thanks for all your help on the proximity switches. I think I have a plan on that now but will revisit that later because . . .

24V PSU, 2off 24V relays, and the 20A contactor all arrived in the post today! Big thanks to Dean for some behind the scenes help .

Managed to get a quick hour in the garage tonight and made some progress:

24V PSU wired in
Contactor to control the linear power supply mostly wired in (need the 24V DC feed to complete)
Shifted all the earth blocks to a common location to make proper star-earth point
Made new earth cables to suit
Added terminal end block clamps to stop them wobbling around
Swapped out one of the 12V relays for the new 24V, but not wired in. Got one more to do.
Added 2 pairs of green adapter brackets (near the VFD) - these will guide the power and signal cable (not added yet). Not really required but they were about £1.30 for 2 on ebay and I just liked the look of them !

Overview:


AC DIN rail coming along:


DC DIN rail getting close (ignore 12V labels it will be 24V):


Questions on the contactor:
T1, T2 are the mains input ?
L1, L2 are the switched output ?
Should I keep the earth permanently connected (i.e. not through T3/L3 of contactor) ?
A1 / A2 24V DC polarity important? I'm guessing not.
There is a 0 / 1 switch in the middle - some sort of tester / over-ride? Can I leave it at 0 ?