Technical Notes

Fanuc Laser Test Procedures

AESI Service Department Customer Support -- Tech Note: L008

Applies to: Laser Machines Equipped with Fanuc Lasers.
Last updated: Monday, October 21, 1996.

Catalog

The following procedure applies to all Amada Laser Machines equipped with the Fanuc C1000, C1500, C2000, C1500B, C2000A, C2000B or C3000B lasers.

FANUC LASER TESTS (VARIOUS)

DISCHARGE MARGIN TEST

Change the following parameters:

16L	0L	Standard Value	New Value	FUNCTION
15000.4	200.4	1	0	Does not do 3min calibration
15208	233	4096	0	No output feedback
15209	234	150	0	No output feedback
15242(50Hz)	236	set value	set value + 30	Gas pressure up 3 torr
15243(60Hz)	236	set value	set value + 30	Gas pressure up 3 torr

When PRM No. 15242, 15243, or 236 are changed, a Power Off Alarm is displayed. Shut off N/C power once and turn on N/C power again in 4 or 5 seconds.

Remove the maintenance panel on the oscillator for checking the discharge tube. Keep the door interlock OFF.

Start the oscillator (H/V on). If there is a discharge start switch, turn it on after LRDY appears.

Make sure that the discharge in the tubes remains on for at least 30 minutes once discharge has started. If discharge stops during 30 minutes, lower PRM No. 15242, 15243, or 236 (depending on control) by increments of 10 units ( 1 TORR ) until requirements pass. Once requirements pass, PRM No. 15242, 15243, or 236 should be set 2 or 3 TORR less than parameter at which it passed (Example: passed at 760, set PRM 15242, 15243, or 236 to 730 or 740).

•

Test complete. Return parameters changed in step No. 1 to their original values.

ˆ Top ˆ

POWER MARGIN CHECK

Change the following parameters listed below:

16-L	0-L	Standard value	New value	Function
15000.2	200.2	0	1	Assist gas ineffective at beam on.
15000.3	200.3	0	1	Manual mode, beam on possible.
15000.4	200.4	1	0	Does not do 3min compensation
15208	233	4096	0	No output feedback
15209	234	150	0	No output feedback
210	238	1000	1500	C1000 II Laser
15210	238	1500	1650	C1500 Laser
15210	238	2000	2300	C2000A Laser
15210	238	2000	2500	C2000 Laser
15210	238	3000	3600	C3000 Laser

Start the oscillator ( turn on High Voltage to Laser ). If there is a discharge start switch turn it on after LRDY appears.

Input the following values into the LASER SETTING MODE.

Pc = 1150W (C1000 II), 1650W (C1500), 2300W (C2000A), 2500W (C2000),3600W(C3000)
Duty Cycle = 5 %
Frequency = 5 Hz

:0010(Power Margin Test)
G90G92
G65P9101Z1
G00X0Y0
G65P9100S2500B5C5I63W2500T5U5I64
G70
M30

Discharge laser internally in Manual Mode ( Shutter closed ).

Run laser in this condition for minimum of 30min.. If no anomalies occur in 30 minutes, test passes.

Return parameters to their original settings.

Test complete.

ˆ Top ˆ

FANUC LASER LEAK TEST

1.	Change PARAMETER #235 to 10. (Probably set to 100: Setting to 10 sets base pressure to 1.0 TORR).

	a.	Go to SETTINGS PAGE.
	b.	Page down until PWE (Parameter Write Enable).
	c.	Go to MDI.
	d.	Enter "P, 1, INPUT".
	e.	You will receive a "100 ALARM" telling you that you are able to change parameters.
	f.	Go to PARAMETER #235, enter "P, 10, INPUT".
	g.	Return to SETTINGS PAGE, to PWE.
	h.	Enter "P, 0, INPUT".
	i.	Reset ALARM.

2.	Start the laser. (This will cause the laser to attempt to pump down to 1.0 TORR to start up).
3.	Monitor DIAGNOSTIC #860, which indicates laser pressure in 1/10th of a TORR.
4.	Wait until DIAGNOSTIC #860 is less than 20 (2.0 TORR), then shut off N/C main power source.( Use transformer main breaker).

	NOTE: IF IT TAKES MORE THAN 10 MINUTES TO PUMP DOWN TO BASE PRESSURE (DESIGNATED BY PARAMETER #235), YOU WILL RECEIVE ALARM #680, IN WHICH CASE, EITHER A PROBLEM EXISTS WITH THE VACUUM PUMP, OR A LEAK IS PRESENT.

5.	While main power to the laser and N/C control is off, turn the laser keyswitch to "OFF". (Leave "OFF" until procedure is complete).
6.	Turn laser and N/C control power on.
7.	Return to DIAGNOSTIC #860 and note the pressure reading. Wait 15 minutes, then note the pressure reading again. If the reading has increased by more than 22 units (2.2 TORR ) then a leak is present in the resonator.
8.	If no leak is present, return PARAMETER #235 to 100 and continue operation.

top

Synergy in Action Through Diverse Technologies

Technical Notes

AMADA proudly sponsors: