Working Principle - Weldtronic TTIG200PADP Operating Manual

Product performance characteristics
• Advanced IGBT inverter technology
• Industry leading control system -MCU control system, responds immediately to any changes
• Inverting frequency of 33~43 kHz greatly reduces the size and weight of the welder.
• Great reduction in magnetic and resistance loss enhances the welding efficiency and energy saving effect.
• Working frequency is beyond the audio range, which almost eliminates noise pollution.
• TIG/DC operation, If the tungsten electrode touches the workpiece when welding, the current will drop
to short-circuit current to protect tungsten
• High frequency and high voltage for arc igniting to ensure the success ratio of igniting arc, the reverse
polarity ignition ensures good ignition behavior in TIG-AC welding
• Pedal control the welding current
• Double purposes : AC inverter TIG/MMA and DC inverter TIG/MMA, Excellent performance on Al-alloy、
carbon steel、stainless steel、titanium
• Intelligent protection: over-voltage, over-current, over-heat, when the problems listed before occurred,
the alarm lamp on the front panel will be on and the output current will be cut off. It can self-protect and
prolong the using life
•Bionic and Ergonomic industrial design.
• Front and rear panels made of high-intensity plastics suitable for working in severe conditions.
• Excellent insulating property.
• Water-resistant, antistatic and anticorrosion design.
• Avoid AC arc-break with special means, even if arc-break occurs the HF will keep the arc stable

Working Principle

The working principle of TitanTig 200P ACDC welding machines is shown as the following figure.
Single-phase 220V work frequency AC is rectified into DC (about 312V), then is converted to medium
frequency AC (about 40KHz) by inverter device (IGBT module), after reducing voltage by medium
transformer (the main transformer) and rectifying by medium frequency rectifier (fast recovery diodes),
then is outputted DC or AC by selecting IGBT module. The circuit adopts current feedback control
technology to insure current output stably. Meanwhile, the welding current parameter can be adjusted
continuously and steplessly to meet with the requirements of welding craft.
Single-phase, AC
Trans Hall
DC
AC AC DC AC or DC AC or DC
Rectif Invert Rectif Invert
forme devic
ier er ier er
220V，50Hz
r e
Control signal
Current feedback
control
TitanTig 200P ACDC Pro Operators Manual Issue. A 0516