Hi all. Im building a new cnc machine and only just finished the other day.
A few weeks ago i received my 4 axis driver kit and wired it all up had it running for about 5 minutes all was well then pop i blew a driver put a new driver in its place then pop again blew that 1... checked my wiring and it turned out one of my dir or step or en wires had come out and was touching the ground so i brushed that off as my fault ordered replacement drivers and here we are today.
I wired it all up had it all running nicely even did some cuts was about to cut my new dust shoe and was just setting my y zero (jogging backward precisely so like tapping the jog down) and pop again psu was off and turns out another driver had failed.... long story short all 4 drivers out of the 5 have all failed. i checked my wiring and this time there is nothing wrong.
I know the tb6600 isnt a great driver at best but i wouldnt expect them to just fail not at this rate at least.
Specs:
Driver Settings:
46.5v (tested) (supposed to be able to go to 50v or rated at 48v)
microstepping 1/2
steps per mm 80 (inc microstepping)
current out: 2.8 amps (rated to 5a )
Stepper Motors:
NEMA23 254Oz-in
Stepper motors inductance: 3.6mh
Is there anything that i could have setup wrong etc thats causing the failure (even though it was running for around an hour fine)
I ask this because i dont want to get some good quality drivers and then blow them all because i have something setup wrong internally they are all blowing on the stepper motor output pins linked to the tb6600hg ic internally shorting across them all (tested with mulitmeter)
I can supply pics of my wiring if needed or any other details.
So if i do replace them with a better quality driver am i able to use the same bob or would i be best to upgrade that as well?
The bob is a 5 axis that came with the tb6600 bundle
Thanks