Control Schematic Advice

[m_c]

I've not looked in great detail but the following stand out to me-
Home switches should be wired NC if you're looping them together.
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Do you really need to use two seperate relays for limits and E-stops?
I know it can be nice to know what's just caused everything to grind to a halt, but it does add cost and complexity for little practical benefit when you could simply wire the limit swithced in series with the e-stops. And if you're unsure what's caused things to stop, hitting the limit overide should tell you if it's a limit or e-stop issue.

[JAZZCNC]

I've not looked in great detail but the following stand out to me-
Home switches should be wired NC if you're looping them together.

They are NC switches but there's a bigger problem here.? The A2 on K1 relay doesn't go to 0V it goes to 15-70V on the BOB so it won't ever turn on.!

Also don't kill power to the BOB leave it running.

Ring me Jim.

[m_c]

They are NC switches

I know they are, but they're shown wired NO in the diagram...
Unless Jim is planning on them only being activated when in the home position, then it's wrong.
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Good catch on the BOB power. You really don't want to kill that.

[JAZZCNC]

I know they are, but they're shown wired NO in the diagram...
Unless Jim is planning on them only being activated when in the home position, then it's wrong.

Erm ye go on then I'll let you have it on technical merit. . . . . . But I think it's just that Jim found the first symbol of a switch to use and thats why he wrote NC so we'd know which switch type.?