I’ve just completed my 2nd cnc build, moved from a kronos/avid hybrid 50x27 to a 50x120. I’m seeing an error during squaring procedure stating that the gantry is 0.5000 inches out of square. The Z and X axis are homing correctly, by the Y axis is giving some odd behavior. On previous build, the Y1- (front/left of CNC) and Y2- (front/right of CNC) will jog back and forth and settle to a final position. In this instance, I see the gantry moving toward homing position, the Y1- and Y2- sensor are triggered and the back and forth jog is engage, but after two contact cycle, Y1- moves backward about 1 inch while Y2- stays still, and the over 0.500 inch out of square pops up.
Any clues as to why this is happening? I did not see this error on previous build, same settings on CNC12 with exception of length and direction reversal for X due to orientation of gear rack, backward on Kronos/AVID build. Both spindle and controller are responding to power command.
My first build was a 50x27 Kronos/CNC router part before the name changed to AVID cnc. That build was on Mach 4 controller. Last year I upgraded that unit to an EX controller with CNC12 software and observed a odd behavior with the controller, and that issue was quickly resolved with new software download. Support for that issue was spot on!
This year, I started a 2nd build, 100% AVID, 50x120 and took the EX controller and Spindle from first build with the intention of upgrading that first build with new ATC option, but for next year! So, yes, it is an AVID stock machine with a custom base support.
I ordered the last NEMA 34 motors and pro Rack/pinion for the Y1/Y2 last week and completed the installation of those motors today. I hooked up cables to controller and spindle, updated CNC12 profile for the extra length (Y) and X direction reversal. At this point, the issue is during gantry squaring, the Y1- motor is pulling about 1 inch from the sensor and causing this gantry over 0.500 inches square error. Says to physically square the gantry and rehome CNC.
well I’ll be darn! I need new glasses! The Y2- and Y2+ were inadvertently not connected in designated sockets on controller! Took care to tag both ends of all cables (motor and sensors) during build up and after reconnecteing the Y2 sensor cables in proper socket, the CNC can finish the squaring sequence! It explains the error, the gantry was trying to square with the sensor at other end of table, quite the distance and the error pop out! Back on track!
