LNS GT 112-E, Instruction Manual

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9 - 10
Chapter 9 TROUBLE SHOOTING GUIDE
GT 112-E
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
contact X40 is ON.
2. Press “STOP” button on HMI to clear the alarm.
AL14 Part Feed Out Too Long!
Description
The bar feeder continuously monitors the pusher
moving distance while the chuck of the lathe is open
(the bar feeder is currently feeding bar stock). If the
distance exceeds the “Too long collet open” setup, this
alarm will turn on.
Only valid with fixed headstock lathe.
Troubleshooting
1. Check if the bar stock is disconnected from the
pusher collet.
2. Check if “Too long collet open
”
setup is incorrect.
3. Check if the transmission mechanism or chain is
broken.
4. Check if the bar measuring device is defective.
5. Press “STOP” button on HMI to clear the alarm.
AL15 Part Feed Out Too Short!
Description
The bar feeder monitors the pusher moving distance
from the time the chuck opens to the time the chuck
closes (the lathe is currently proceeding machining).
Once the chuck closes and if the distance is 5 mm
shorter than “part length” this alarm will turn on.
Only valid with fixed headstock lathe.
Trouble shooting
1. Check if the alignment of the bar feeder is correct.
2. Check if the channel and front tube sizes are correct
and if obstructed.