Problem symptoms:

After power-on, the welding head’s tail electric machinery appears to whistle / the red light of swing appears to be abnormal / heat / unable to adjust the swing width.

Causes and solutions to the problem:

The driver controls the swings of electric machinery in the control box. And the above problems may occur when there is a signal error or the drive does not match the electric machinery.

We should check whether the wiring is normal at first, and then deal with the abnormal sound by adjusting the drive of electric machinery, the specifics are as follows:

① Poor connection between the connecting wire terminals of the electric machinery and the driver (SUP20S model)

In the SUP20S welding gun, we take the way of the connection terminal to be built-in. However, poor connection may cause the signal to be abnormal and cause a whistle. If in this situation you should try to unplug and plug again.

②The connection line between the driver and the electric machinery is in a broken circuit (SUP15S model)

On the SUP15S welding gun, the electric machinery signal and power supply are connected through the air plug interface (two black lines), and the air plug interface should be disassembled to check whether the soldering pins are broken or virtually welded.

③Premise: If the swing is normal, there will be no redlight flickering, and the wiring is confirmed to be no problem. It means that the driver and the electric machinery do not match or be interfered.

This appears on newly installed equipment or equipment whose tip be replaced, and it can be improved by adjusting the driven potentiometer.

Potentiometer position: Y axis (on the left side of the figure below) above the   plug from left to right, the seventh position is the potentiometer.

The method of adjustments: in the powered state, please use a slotted screwdriver to twist in one direction. If there is no response for more than 10 turns, please reset after twisting back, and then continue to twist in another opposite direction.

（If the adjustment of the seventh potentiometer does not respond, then to adjust the one that counting from left to right is the fourth one).