CHAPTER 3: PROGRAMMING FUNCTIONS
LW500A/LW600A PULSED Nd:YAG LASER
3-10 990-539
1. POINT / SHOT / POWER – Once the total number of weld pulses are known for a given seam
weld, the seam weld function can be applied. To control the fade-in and fade-out function,
determine which pulses need to be reduced in output power (typically at the very beginning and
ending of a seam weld). Then use the POINT fields to define the output POWER (0 – 150%) at
the specific SHOT count. Only specify points where the power changes. All power values
between specified points will be applied in a linear fashion (either increases or decreases
depending on the next
POWER % specified). The POWER values on the SEAM Screen over-ride
the
SCHEDULE screen values. You can program up to 20 discrete SHOT and POWER values. Use
the ◄ and ► function keys, to scroll through all input fields (POINT01 through POINT20).
If there are more points specified on the SEAM WELD screen than the total number of
SHOTs specified on the SCHEDULE screen, the Laser will use all of the SEAM WELD
points specified up to the number of SHOTs specified on the SCHEDULE screen. The rest
of the SEAM WELD values (above the SHOT number) will be ignored.
If there are more SHOTs specified on the SCHEDULE screen than the total number of
points specified on the SEAM WELD screen, the Laser will use all of the SEAM WELD
point’s specified then use the settings specified at the last point for the remainder of the
shots.
2. RESET – Clears all shot settings (SHOT01 to SHOT20). Sets all values back to 0.
SEAM WELD MODE EXAMPLE
In the example below, a simple rectangular output pulse (1kW x 2mS) is programmed in the FORM:
FIX
SCHEDULE screen at a 10pps repetition rate and a total of 100 shots. SEAM is made active in
order to vary the laser output power over the entire seam weld process.
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