Stealth DIGI-ARC 160PFC MV, Operator'S Manual

Page: 11 / 24

STEALTH DIGI-ARC 160PFC MV
11
3.2 Duty Cycle and Over-heating
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 when it outputs the rated
welding current.
The relation between the duty cycle ‘X’
and the output welding current ‘I’ is
shown as the figure on the right.
If the welder is over-heating, the IGBT over-heating protection unit inside will send a
message to cut output welding current and illuminate the pilot lamp on the front
panel.
At this point, the machine should be turned off 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
INSTALLATION AND ADJUSTMENT
8
§3.2 Duty cycle & Over heat
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 when it outputs
the 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-heat, 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 way
§3.3.1 MMA
Choosing the connection of DCEN or DCEP is based on the arc stable burning condition.
The different electrodes need different connection way. Please refer to the electrode manual.
workpiece
Welding holder
electrode
DCEP
GM-2000
workpiece
electrode
DCEN
Welding holder
GM-2000
ARC160
ARC160
INSTALLATION AND ADJUSTMENT
8
§3.2 Duty cycle & Over heat
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 when it outputs
the 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-heat, 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 way
§3.3.1 MMA
Choosing the connection of DCEN or DCEP is based on the arc stable burning condition.
The different electrodes need different connection way. Please refer to the electrode manual.
workpiece
Welding holder
electrode
DCEP
GM-2000
workpiece
electrode
DCEN
Welding holder
GM-2000
ARC160
ARC160
DCEN DCEP
Choosing the connection of DCEN or DCEP is based on the arc stable burning
condition. The different electrodes need different connections. Please refer to the
electrode manual.