LNS GT 326-E, Instruction Manual, Page: 124 / 218

9 TROUBLESHOOTING GUIDE
9 - 9
GT 326-E
AL11 Lathe Did Not Resume Production Cycle!
Description
Once the bar stock reaches
“TOP CUT POSITION” and
confirmation signal is sent to the lathe (R2) the chuck
doesn
’t close within 60 sec. This alarm only applies to
TOP CUT process rather than general bar feeding
process.
Explanation
After
“TOP CUT POSITION” is reached and
confirmation signal is sent to the lathe (R2) the chuck
doesn
’t close within 60 seconds. This is only detected
during TOP CUT process so this message will not be
activated during general feeding process.
Troubleshooting
1. Check if the lathe receives START (R2) signal from
the bar feeder.
2. Check if the bar feeder receives CHUCK signal.
3. Check if the interface cable connection status is
functioning.
4. Press
“STOP” button on HMI to clear the alarm.
AL12 Bar Loading Time Elapsed!
Description
The pusher cannot advances the bar stock to
“TOP
CUT POSITION
” after 20 try-outs.
Troubleshooting
1. Check if the bar feed alignment is correct.
2. Check if the channel and front tube size are correct
or if obstructed.
3. Check if the front rest is clamping the bar.
4. Check if the lathe spindle is obstructed.
5. Check if the lathe chuck is too tight due to the size
being incorrect or there are burrs inside the chuck or
at the end of the bar.
6. Check if
“TOP CUT POSITION” setup is incorrect.
7. Check if the bar measuring device of the bar feeder
is malfunctioning.
8. Press
“STOP” button on HMI to clear the alarm.
AL13 Part Feed Out Time Elapsed!
Description
If the PLC input X40 does not activate within 30 sec,
receiving the CHUCK signal from the lathe will generate
this alarm.
Troubleshooting
1. Check if the interface connected to the PLC input
X40 is ON.
2. Press
“STOP” button on HMI to clear the alarm.