Hi all,
I’m chasing an intermittent fault on an Arburg Allrounder 570 S 2200-800 / 170 and could use some advice from anyone familiar with these machines.
Fault history:
Initially had Y707 “cable O/C pressure sensor”
At the same time started getting Y303 “cable rupture”
Faults would appear individually (not both at once)
Both would trigger after ~30 seconds of cycle/start-up
Machine would eventually fault out and stop
What I’ve done so far:
Replaced the Y707 pressure sensor → so far that fault has not returned
Checked cabinet cooling fans → all working correctly
Inspected/checked wiring visually
Tried wiggling cables (especially around suspected Y303 area under screw/plastification zone) → no change in fault behaviour
Current situation:
Y707 seems resolved after sensor replacement
Y303 cable rupture fault is still persistent
Fault still appears after ~30 seconds consistently
New finding:
I’ve traced both Y303 and Y707 back and they appear to share B10 board supply/reference (I believe both sensor supplies come from this board).
Because of this, I’m starting to suspect it may not be individual sensors/cables anymore, but something common like:
B10 supply instability
analogue input board issue
shared 24V / reference voltage problem
grounding issue
Question:
Has anyone seen similar behaviour where multiple “cable rupture” / O/C sensor faults appear across different channels and it ended up being:
B10 board failure
power supply instability
analogue input card issue
or a common reference/earth problem?
Any pointers on what to check next on these machines would be appreciated.
Thanks 👍