I will admit that I am a newbie, and I still have a lot to learn about the 5 PRO. I am trying to run some shaker style cabinets doors, nested onto 47 x 47 x 3/4" super refined MDF. The first sheet had 7 drawer fronts and 2 doors that will have rain glass inserts. The program ran beautifully after a little tweaking. The second sheet ran well until I noticed that the pocket on the first door was more than 1/4" deep at the top. Found that the MDF was not totally down at the back of the machine. Added a couple of more hold downs across the back, and the rest of the doors cut like they should. Loaded the third sheet. The first pocket ran properly. The first cut on the second door ran like it should, until about 3/4 of the way down it’s first pass. The spindle started to lock down so I reached to hit the emergency stop. However, it shuddered a bit, then started running normally again. In the file, all of the doors are in line at the top. After the machine shuttered, it moved the entire cut down about two inches. it finished the pocket to the correct size and moved to the third door. It to was moved down about two inches. After the pockets, there is a bit change to an 1/8" spiral bit to clean up the rounded corners of the door pockets. The machine went over to the Bit setter, adjusted the bit height as it is supposed to. However, it did not run anywhere close to where it was supposed to along the X-Z axis, and ran way too deep.
I would start by checking all the wire connectors for the motors. Look for pins and wires that are lose, not crimped tight, pins and wires that have backed out, pins that may have burnt on the tips on both the male and female pins.
You could also move the axis in the program and listen for any changes in the sounds of the motors. While moving the axis do this one at a time and wiggle the connectors while moving and listen for changes in sound or motors stopping. If you have one of the hand held temperature you could check the connectors to see if there is a heat build up, this if there is a connector problem the resistance in the connector may build up a higher heat level. I had issues with the pins on several connectors and the heat on the connector was high I don’t remember the actual reading but it was also hot to the touch. This will be more pronounced after the machine has been operated for an extended time much like the issues you have.
A good inspection of the couplings should be completed also check the set screws and shafts for tightness and for any slipping couplings.
This is a good starting place
Anthony
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