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3 Installation & Adjustment
3.1 Parameters
Duty Cycle (10 mins): 130A@20%, 70A@60%, 55@100%
3.2 Duty cycle & Overheat
The letter “X” stands for duty cycle, which is defined as the proportion of the time that a
machine can work continuously within a certain time (10 minutes).
The rated duty cycle means the proportion of the time that a machine can work continuously
within 10 minutes at a rated welding current.
The relation between the duty cycle “X” and the
output welding current “I” is shown as the right
figure.
If the welder is over-heated, the IGBT over-heat
protection unit inside it will output an instruction
to cut output welding current and brighten the
over-heat pilot lamp on the front panel. At this
time, the machine should be relaxed for 15
minutes to cool the fan. When operating the machine again, the welding output current or the
duty cycle should be reduced.
3.3 Welding polarity connection
3.3.1 MMA
Choosing the connection of DCEN or DCEP is pictured above.
