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How to correctly set the automatic height adjustment of CNC plasma cutting machine
In recent years, the use of CNC cutting machines has been increasingly adopted across various industrial sectors. However, in real-world applications, operators often face a range of challenges. Today, we will explore the automatic height adjustment settings for CNC plasma cutting machines, an essential aspect that ensures precision and efficiency during the cutting process.
The first step involves setting the cutting mode of the CNC plasma cutting machine to plasma mode. After that, you need to turn on the arc voltage regulator power supply. Next, proceed with the auto-adjuster setup by considering the following three key aspects.
1. Test the manual adjustment function
Before proceeding with automated settings, it's crucial to verify whether the manual controls are functioning correctly. Try pressing the TORCH ↑ and TORCH ↓ buttons on the height controller to check if the torch moves in the correct direction. When the torch is at its upper limit, pressing the up button should not cause any movement. At this point, pressing the down button should lower the torch. Similarly, when the torch is at the lower limit, pressing the down button should not trigger any movement, while pressing the up button should raise it. Confirming the reliability of the upper and lower limits is essential. If the torch fails to move up or down, it may be due to the torch being at the limit position or a faulty limit switch. In such cases, replace the damaged switch immediately to prevent motor damage.
2. Perform initial positioning test
Press the IHS TEST button on the height adjuster. The plasma torch should then descend at the speed set by the initial positioning down pulse width (IHS DOWN PWM). Once the nozzle touches the steel plate, it should stop and rise according to the initial positioning time (IHS UP PWM). This determines the arc starting height, which is typically 1.5 to 2 times the cutting height. For example, if the cutting height is 1.5 mm as per the POWERMAX1000 specification, the arc height should be around 3 mm. Based on experience, users can fine-tune the positioning time to optimize the arc height, achieving better cutting quality while minimizing consumable wear.
3. Conduct arc voltage test
After positioning the torch at the desired arc height using the IHS TEST button, press the ARC TEST button to initiate the arc. Observe the arc voltage value displayed in the monitoring window. It should closely match the set arc voltage value. If there is a significant difference, adjust the setting accordingly. Otherwise, the cutting height might become too high or the torch could drag along the metal surface, both of which can degrade cutting quality and potentially damage the torch components.
In conclusion, the performance of any equipment is closely tied to the operator’s level of expertise. Therefore, it is important for operators to actively learn and understand the technical aspects of the equipment. This knowledge helps build practical experience, ensuring smooth and efficient operation over time.