The TELWIN PTE 28 LCD welding machine is equipped with an advanced microprocessor control system, at the heart of which is an easy-to-read liquid crystal display (LCD). This solution revolutionizes the way you interact with the device, making the setting of welding parameters not only precise, but also extremely intuitive. Forget about complicated tables and guesswork – now you have full control over every aspect of the process.

The LCD panel allows the user to digitally set key values, such as welding current (expressed as a percentage or kA), welding time (in cycles or milliseconds), and pre- and post-pressure times. Some advanced models can also offer a pulse current control function, ideal for welding heat-sensitive materials or galvanized sheets, minimizing damage to the coating. For the professional, this means that the parameters can be fine-tuned to the specific material and thickness, ensuring optimal weld quality and strength every time. What’s more, the ability to save programs (if the function is available) allows instant recall of proven settings for repetitive tasks, drastically reducing preparation time and eliminating the risk of error.

One of the key strengths of the TELWIN PTE 28 LCD is its standard arms with an impressive length of 500 mm. This parameter has a direct impact on the welder’s range of applications, opening up new possibilities for the operator. Longer arms allow unobstructed access to the inner portions of large parts, such as car body components, machine housings or large-scale sheet metal structures.

Imagine working on a vehicle restoration where you need to reach thresholds, pillars or floor components. The 500mm arms provide the necessary reach, eliminating the need to disassemble multiple parts or use less efficient joining methods. In volume production, where complex shapes are machined, longer arms translate into greater process flexibility and fewer design constraints. Despite the increased length, the design of the arms is optimized for rigidity to ensure that the electrodes are guided precisely and that the correct clamping force is maintained along their entire length. This is the key to achieving repeatable, high-quality welds, even in hard-to-reach areas.

The TELWIN PTE 28 LCD spot welding machine uses a pneumatic electrode pressure system, a fundamental advantage over manual systems. The pneumatic actuator, powered by compressed air, provides constant and precisely regulated pressure on the electrodes during the entire welding cycle. This is a critical parameter for achieving the correct geometry of the weld nucleus and ensuring adequate electrical and thermal conductivity between the parts to be joined.

Thanks to the ability to adjust the air pressure feeding the actuator, the operator can adjust the pressure force to the type and thickness of the materials to be welded, according to technological recommendations. The constancy of the clamping force, independent of operator fatigue, guarantees high repeatability and uniformity of welds in series production. This eliminates the risk of defective joints caused by too little or too much force, such as porosity, excessive indentation or lack of fusion. For the professional, this means the certainty of obtaining durable and aesthetically pleasing welds, reducing defects and increasing overall productivity.