YASKAWA YRC1000 Operator's Manual page 18

1 Spot Welding Application Using a Motor Gun
1.3 Setting of Motor Gun
2. Set the pressure value to the pressure file.
– As the unit of this pressure, specify torque(%).
– Specify 5(%) to the touch speed of the pressure file.
3. Register SVGUNCL instruction to a JOB.
– Specify the pressure file set at the step 2.
4. Execute the JOB and measure the pressure with the force gauge.
5. Execute the above procedures 2 through 4 with the different toque(%)
to find a toque(%) for the pressure to be maximum.
6. Execute the above procedures 2 through 4 with the different toque(%)
to find a torque(%) for the pressure to be half of the maximum one.
7. Set torques (%) for both maximum and half of the maximum pressure.
And then, change the SETTING from "NOT DONE" to "DONE".
Pressurization will not be executed in case the Gun Condi-
tion file is incomplete.
NOTE
When applying the pressure for the first time, set a tentative
value to the Gun Condition file.
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