How to adjust the arc voltage of a CNC plasma cutting machine

‌Initial positioning test‌: Press the initial positioning test button, the cutting torch will move downward at the set speed, pause after touching the steel plate, and then rise to the appropriate arc starting height at the set speed. The arc starting height is generally 1.5~2 times the cutting height. Users can adjust the positioning time to change the arc starting height based on cutting experience to achieve the best cutting quality and reduce consumable damage.

‌Arc voltage test‌: After the arc is successfully started, observe the arc voltage value in the arc voltage monitoring window to ensure that it is close to the set arc voltage value. If the difference is large, the arc voltage setting value needs to be adjusted, otherwise it will affect the cutting quality and the loss of the cutting torch.

‌Manual height adjustment test‌: Test whether the manual height adjustment function works normally, including the rising and falling actions of the cutting torch. Confirm the reliability of the upper and lower limit actions to avoid damage to the height adjustment motor due to switch damage.

‌Automatic/manual switching‌: Switch the automatic height adjustment state of the height adjuster through the "automatic/manual" key. In the automatic height adjustment state, the automatic height adjustment can be performed during the cutting process; in the manual state, the automatic height adjustment is paused.

‌Arc start test‌: Press the arc start test button, the cutting torch will arc and rise to the set completion gun height. Pay attention to the changes in the values ​​on the display to ensure that they are within a reasonable range.

‌Parameter adjustment‌: Adjust the parameters such as piercing time, arc break detection delay, and cutting torch rise time according to the cutting effect. For example, the piercing time increases with the increase of steel plate thickness, and the arc break detection delay can be set to 1-2 seconds as needed to prevent arc breakage at the end of cutting.