CHAPTER 9: MALFUNCTIONS 9-5
ALPHA 538/552
AL10: SQ2 switch (home position) failure!
Description
SQ2 switch failure
Solutions
Check the switch SQ2
AL11: Lathe did not resume its production cycle!
Description
Le PLC has not received the signal clamp closing
A1 or the relay R2 is defective.
Solutions
Check the relay R2
Check the wiring of the interface.
Check the programming of the lathe.
AL12: Safety time for loading elapsed!
Description
This alarm is used for the bar stock move in top-
cut position.
The profiled bar stock moves until the back of the
clamping device. Then, the spindle runs slowly
while the bar feeder moves the bar stock to the
clamping device until the material fit to the
clamping device and reach the top-cut position.
After 20 try-outs, this alarm is generated.
Solutions
Press the STOP button on the remote control to
reset the alarm.
Remove the bar out of the spindle.
Start the top-cut cycle again.
If the problem persists, please contact LNS SA.
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