GSI Group - Laser Division
JK300HP/JK300P/JK125P
Issue 2.0
Pre-installation and User Manual
Part No: 1EA300E01
Page
93 of 172
7.6.20 Alarm 4n20 : Power Supply Contactor Out Timeout
Meaning:
The power supply contactor did not disengage within the timeout period during the laser shut
down sequence.
Possible causes:
1.
Faulty power supply.
7.6.21 Alarm 4n21 : Power Supply Residual Voltage Fault
Meaning:
Faulty or slow Power supply capacitor discharge.
WARNING
THE CAPACITOR BANK IN THE POWER SUPPLY MAY NOT BE FULLY
DISCHARGED, HANDLE WITH CARE.
Possible causes:
1.
Faulty power supply
7.7 Shutter Alarms (Zone 5)
7.7.1 Alarm 5n01 : Shutter communication fault
Meaning:
Shutter n stopped communicating with the laser control card.
Possible causes:
1.
Incorrect address selected on shutter card address switch.
2.
Shutter card not fitted.
3.
Loose Shutter card.
4.
Loose Laser Control Card.
5.
Faulty Shutter Card.
6.
Faulty Laser Control Card.
7.7.2 Alarm 5n02 : Shutter Initialisation Failure
Meaning:
The Laser Control Card failed to initialise the shutter card.
Possible causes:
1.
Incorrect address selected on shutter card address switch.
2.
Shutter card not fitted.
3.
Loose Shutter card.
4.
Loose Laser Control Card.
5.
Faulty Shutter Card.
6.
Faulty Laser Control Card.
Petitioners Canadian Solar Inc. and Canadian Solar (USA) Inc.
Ex. 1025, p. 93