1 The welding process is controlled by a microprocessor inclosed-loop, which ensures the constant welding current within the variationrange of grid voltage and welding load, thus ensuring the quality of weldingspots.

2. It has the functions of current step increase control, to compensate thechange of welding current density.

3. Selection of Specifications 4 or 15 for welding process.

4. It can control two pressurized electromagnetic gas valves (double weldingguns).

5. Two (Specification 4) or more (Specification 15) independent weldingspecifications can be set for each welding gun, and one of the weldingspecifications can be selected through two starting switches.

6. It has single spot welding and continuous spot welding functions.

7. It can carry out triple-pulse welding control, especially suitable for thickplate welding.

8. Electrode grinding control and welding gun clamping control functions.

9. It has the function of error self-inspection, with various abnormal casesdisplayed in Chinese words.

10. It has the function of power-off data storage, to keep the data for up toten years.

11. It has cluster control interface, where each welder can weld under thecontrol of the superior control machine.

12. Centralized management function. One microprocessor can monitor the workingstatus of 120 welding controllers, manage programming parameters, record andmake inquiries on welding data of welding spots, etc.