TH210A/TH220A/TH380A Contravariant welder

The character of TH210A/TH220A/TH380A contravariant resistance welding controller:
1, controls by micro controller(MCU), has the closed loop feedback constant current output control, the voltage, the power monitoring function.
2, inverted bridge uses the soft switch technology, reduces the switching loss, reduces the electromagnetic interference.
3, has the failure diagnoses and the alarming function of current abnormal, monitoring  ultra limits, the net press ultra limits, overheated and so on.
4, inverted bridge current abnormal and automatic cutout, enhances the system protection.
5, two section of heating enactment, has the function of current slow-up and slow-down, the time wide scope enactment (0-999ms), suitable for the complex welding process need.
6, seven group of parameter storage, facilitate for many kinds of welding variety using.
8, 160x80 LCD display, simultaneously demonstrates many kinds of contents.
9, strong exterior communication function: welding finishing, malfunction and counting signal, convenient for automatical welding uses
10, three group of started input signal (maximum starts seven groups of welding parameter), the output drives two groups of signals, is advantageous for the multi-nose use.
11, 3 phase AC380V inputs, electrical network load equalization.
12 data storage uses EEPROM, non-battery life question.
13, maximum controller output for intermediate frequency square-wave AC is summit current 50A, voltage 530V and requency 2KHz.

Technical parameter
supply voltage   220V/380V
welding current scope   0.3~2.2KA/0.6~3.8KA
current adjustable precision   0.01kA
welding current pulse width   5ms/10ms
external dimensions (length/width/heigh) 55/25/45 weight