WPS-20KAS Inverter Spot Welder | Closed loop control MFDC spot welder

This closed-loop MFDC inverter spot welder adopts advanced medium frequency inverter and digital closed loop control technology. It ensures real-time precise regulation of welding current and voltage, delivering stable weld quality, low spatter and high repeat accuracy. Suitable for stainless steel, copper, aluminum and sheet metal spot welding, it is widely used in automotive, 3C electronics and new energy production lines.

Controller Model PM-5031B (PIW-5000B) PIW-5030B-19 (WPS-07KA) PIW-5230B-19(10KA) (WPS-10KA) PIW-5230B-19(15KA) (WPS-15KA) PIW-5230B-19(20KA) (WPS-20KA)
regular matching transformer PIT-50A08 PIT-50A10 PIT-700A04 PIT-800A06 PIT-800A02 PIT-15K02 PIT-20K02
Max Output Current 5000(A)(%) 7000(A)(%) 10000(A)(%) 15000(A) 2.5%(20000A)(%)
Controller input voltage 3-phase 380V 50/60HZ/Can be customized according to the requirements of 3-phase 220V 50/60HZ
Display mode LCD color screen/Chinese-English optional
Inverter frequency 2KHZ,4KHZ optional 1KHZ,2 KHZ optional 1KHZ
Control mode secondary constant current/secondary constant voltage/secondary constant power
Time setting range Preservation:0000 ms -9999ms
Gradual Ascent 1/2/3:0-300ms Gradual Ascent 1/2/3:0-600ms
Welding 1/2/3:0-300ms Welding 1/2/3:0-600ms
Gradual Descent 1/2/3:0-300ms Gradual Descent 1/2/3:0-600ms
Cooling:0ms -100ms
Hold:0000 ms -9999ms
Current setting range Constant current:0.80-5.00KA Constant current:0.9-7.00KA Constant current:1.2 – 9.99KA Constant current:1.2 – 15.0KA Constant current:1.5 – 20.0KA
Constant voltage:0.10-9.99V Constant voltage:0.1-9.99V Constant voltage:0.10-9.99V Constant voltage:0.10-9.99V Constant voltage:0.10-9.99V
Start-up mode Primary Start-up and Secondary Start-up
Communication Interface RS485
I/O interfaces 40 Mode selection,start,alarm,reset,interrupt,communication,etc.
Storable welding Parameters Group of 63
Current/Upper and Lower limit monitoring Free Setting
Overall dimensions (power) 550(L) * 184(W) * 275(H) 610(L) *200(W) *325(H)
Weight (power) 16KG 21KG