Originally Posted by
allenp
Hello, we have this machine which sometimes when turned on will throw this alarm 300 APC - X axis need ZRN.
Meaning it lost reference for X axis, but normally when batteries which hold axes position run out, this alarm would show on all three axes, not just one...
When it does that, you normally reference axes and it's all good, replace batteries and your good to go for next year or two...
This time it's only on X axis, meaning only X axis loses position.
I did swap batteries for new ones (all 4) with quality Duracell batteries and it still does this..
I suppose this happens because of cabling issues (somehow X axis communication cable on motor loses connection), but it doesn's seem to be only logical reason to me, because, if you had cabling issues, wouldn't it throw some kind of other alarms during milling?
Let's say it's cable issue and we start working on the machine, milling... whatever, at some point cable loses connection and then it should throw some kind of servo error (too large) alarm, wouldnt it?
But that doesn't happen.
Only thing what is happening is, like just now, everything is good, you turn the machine off (don't touch anything in it), you power it back on and alarm 300 will be on... Other time, nothing will happen, no alarm, everything is good.
What else besides cable could it be?
And if it's the cable, how to check/confirm it?
I've removed cables from X motor and cleaned them, dried them out, reconnected (good) and still it will happen sometimes, sometimes it won't...