Hello all,
Today while running a proven production run where we do some intermitent contour cuts I started to get a series of alarms, always on the same tool, always after the first intermitent cut.
7147 spn1: pos-coder signal abnormal
7102 spn1: ex speed error
401 Servo Alarm : B axis VRDY OFF
401 Servo Alarm : Z axis VRDY OFF
401 Servo Alarm : Y axis VRDY OFF
401 Servo Alarm : X axis VRDY OFF
410 Servo Alarm : W Axis excess err (No W axis on machine unless its another reference to Z)
The only one actually showing up on the msg screen when it alarms out is the 7147 error, the others are only showing on alarm history page.
Fanuc18 controller
So far reducing the speeds/feeds by 50% avoids the error. however this is several runs later, and we've had no previous history of this alarm on the machine.
I tried searching the forums for answers but I was unable to find any reference to alarm 7147.
Has anyone here had similar problems show up?
I appreciate any help or suggestions you have to offer.
Thank you for taking time to read this.