CHAPTER 4: OPERATING INSTRUCTIONS
LW500A/LW600A PULSED Nd:YAG LASER
4-6 990-539
Section III. Welding Using External I/O
1. Program the welding parameters using the Laser Controller as described above.
2. Close the
CONTROL CHANGEOVER signal on EXT-I/O(1) – pin 23 and verify that EXTERNAL
CONTROL
is displayed on the STATUS Screen.
3. Turn the High Voltage ON. Close the HV-ON/OFF signal on EXT-I/O(1) – pin 18.
4. Open all Shutters.
Close the MAIN SHUTTER signal on EXT. I/O (1) – pin 24.
Close the BEAM SELECT(s) signal on EXT-I/O (1) – pins 25 through 28.
5. Check the Processing Site.
Close the GUIDE BEAM signal on EXT-I/O(1) – pin 22.
The guide beam will show the processing site with a red dot. This is the position for the
laser processing.
If the processing site is dislocated, adjust by moving the output unit or workpiece. Verify
the working distance before proceeding
6. Select SCHEDULE No. Input the Schedule Number on EXT-I/O(1) by combining input signals;
SCHEDULE 1, 2, 4, 8, and 16.
7. Perform Laser Processing.
Close the LASER START signal on EXT-I/O(1) – pin 20.
NOTE: LASER STOP, EXT-I/O(1) – Pin 21 must be closed for Laser operation.
Verify an output response on the POWER MONITOR screen.
NOTE: Refer to Appendix B, Electrical and Data Connections for connection details.
Shutdown through the External I/O
1. Open all I/O connections by turning
OFF the high voltage and closing all shutters using the
signals described above.
2. Turn the Control key switch to the
OFF position.
3. Turn off the main power switch.
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