LNS Alpha ST 320 - Alarm 1 - Emergency Stop Line Open Is Open; Alarm 2 - Main Access Cover Open; Alarm 3 - Servo Alarm; Alarm Messages and Troubleshooting

CHAPTER 9: MALFUNCTIONS
ALPHA ST 320
9-2
1. ALARM MESSAGES AND TROUBLESHOOTING
All alarms can be reset by pressing the ‘Manual’ key on the remote control. Please take note of the alarm
before resetting (the alarm can not be recalled).
1.1 Alarm 1 – Emergency Stop Line Open is Open
e 1 : E M E R G E N C Y S T O P
Alarm1:
L I N E I S O P E N !
Description :
Main emergency stop control unit open.
Solution :
Check emergency stop switches on remote pendant and electrical cabinet door.
Check lathe emergency stop (interface connectors 7&8).
Check Motor protection switches QM1 (oil pump) and QF1 (servo drive).
Check main access cover safety switch (terminal connectors No.10/12).
Check relay K1 (servo drive power relay).
1.2 Alarm 2 – Main Access Cover Open
e 2 : M A I N A C C E S S C O V E R
Alarm2:
O P E N ! :
Description :
The main access cover is open.
Solution :
Close the main access cover (check cover switch SQ11).
1.3 Alarm 3 – Servo Alarm
e 3 : S E R V O A L A R M !
Alarm3:
P O W E R O F F 2 S T H E N O N
Description :
An obstacle has prevented the servo drive from moving.
Solution :
Power down the bar feed for 2 sec. and power back on.
Check for a mechanical obstruction.
Check for burrs on bar stock.