0~t1: The machine starts to exhale (pre-gas time) When pressing the torch button.
t1~t2: The machine starts to weld when releasing the torch button, and the current
reach to the rated welding current.
t2~t3: When pressing the torch button in second time, the controller automatically
stops the welding process, the current becomes to zero, and the machine continue to
exhale for some time (post-gas time).
The pre-gas time and post-gas time couldn’t be adjusted under 4T cycles mode.
4S Cycles
The 4S cycles is provided for long welding, for the 4S cycles graphs of current see the
picture below.
28
