Machine: A WKLaser LC1280
Board: Leetro MPC6515 Original Board
I just purchased a WKLaser LC1280 and am swapping out the control board with my Cohesion3D board (previously used in a K40 and I loved it).
I’m in the process of re-wiring everything I just wanted to sanity-check myself and ask a few questions. I think in general I’ve got this all down pat, but maybe there are things people here might know the answers to. I couldn’t attach an image apparently because I’m a new user, but here is the diagram I’ve got so far for my (future) reference on how this is all wired together:
(NOTE: The above is supposed to be a link, but the forum is trying to render it as an image. Please click to see diagram)
This diagram is a work in progress, and there are a few things missing like the alarm wiring for the external water cooling, etc.
The drivers in my diagram are NOT the correct external drivers, they were just the ones I had available to do the wiring diagram itself. In reality the X/Y axis are 3ND583s and the Z axis (powering two steppers) is a 2M982
Things I’d like some clarification on:
Do I have the wiring for the stepper motors correct, as it relates to the connection between the Cohesion3D board and the external driver? I am not concerned about the connection from the driver to the actual stepper motor because that is a pre-existing wiring harness.
Is it okay for me to draw 5V from Z-MAX to power the relay module I plan to install to control an air assist?
Am I correct, in general, assuming that both my PSU and Cohesion expects signals to go to ground when activated? I.e. my limit switches should short to ground when clicked? Also, is it typical for the WP signal to go to ground when “good” and be open when “bad”?
I assume it’s okay to run 3 external drivers for the primary motors (which are very beefy), then use the built-in stepper driver for the rotary hookup? The rotary in question is something essentially the same as this:
Side note question: I know it’s not a good idea to be plugging/unplugging stepper motors while they are actively being driven. My hope/intent is to run a line to plug the rotary into so I can take it out when it’s not in use. How do I make sure my steppers for the rotary aren’t active when I do that?
The limit switches for my machine are installed in the top-right corner, I assume I’ll have to modify the smoothieware configuration to address this? There is, at least wires for, a Z endstop of some sort but I have yet to locate exactly where that might be on the machine (it’s cramped and very dirty under the machine after 9 years of use so I haven’t tried yet). I am less concerned about that however as I have a good feel for how much clearance I really have.
I already purchased and am waiting to have delivered the wire harnesses, but I’d really like to purchase the JST connections used on the board for those external drivers in case I ever need to make my own. Can someone point me toward where I might be able to purchase a JST kit with those? (I probably already have a crimper in my workshop).
Is there anything otherwise missing / obviously wrong about my plan here?
I didn’t add this yet to the diagram but I intend to wire the Laser PSU G and TL to Ground/Laser Fire on the board.
Sorry for the long post, but I’m trying to get all my questions out at once!