Panasonic VL-W1-N Series Setup And Maintenance Manual page 147

„ Confirm laser output (Daily inspection)
Confirm the laser output regularly in order to maintain consistent laser processing quality.
The laser output should be measured with a commercially available meter using the following steps:
• It is also possible to check the approximate laser power by using the laser power monitoring function. To control the laser
power with higher accuracy, measure the power regularly by using the commercially available power meter. For the laser
power monitoring function, refer to Operation Manual.
1.
Prepare a commercially available power meter.
• Use the power meter with the following specifications:
• The damage threshold (maximum average power density) of the detector is more than 10kW/cm
• The size of the detector is more than φ 10mm.
• Be sure to use the calibrated power meter.
• A difference may arise under the high/low temperature. Measuring power with normal temperature (20 to 30 Celsius
degree) is recommended.
• Before measuring the laser power, make sure there is no contamination in the laser emission port. If the laser emission
port is contaminated or damaged, an error may result in the measurement of the laser power.
2.
Set the output beam diameter to 2.0 mm in the head of laser welding machine.
Refer to "2-3-7 Output beam diameter control" (P.51).
3.
Install the power meter.
Put the detector of the laser power meter vertically down from the center of the laser emission port and place it at the
following distance, i.e. one-third to half of the specified work distance of the laser welding machine.
Laser welding machine
VL-W1500-N, VL-W1A00-N
VL-W1506-N, VL-W1A06-N
*1 : The values represent the recommended values for the case where the damage threshold (maximum average
power density) of the detector of power meter is 10kW/cm
1.3 1.3
Installation distance for
detector of power meter
• Make sure to set the output beam diameter to 2.0 mm in the head of laser welding machine. The smaller beam diameter
may cause destruction of the power meter.
Installation distance for detector of power meter *1
Work distance
(Base plane)
Approx. 150 mm
Approx. 400 mm
2 .
Laser welding machine head
Detector of power meter
Laser beam
Target object for lasing
ME-VLW1N-SM-1
2
.
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