gala gar SMART 200 TIG PULSE Manual Técnico De Instrucciones página 22

2.2 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 10 minutes to cool the
fan. When operating the machine again, the welding output
current or the duty cycle should be reduced
2.3 Polarity Connection
MMA operation
Welding holder
electrode
workpiece
● Choosing the connection of DCEN or DCEP according to the arc stable burning condition. The different electrodes
need different connection method. Please refer to the electrode manual.
● Put the 'welding mode selection switch' of the front panel on MMA shelf before doing MMA welding.
Assembling the equipment (TIG)
SMART 200 TIG PULSE
Front panel
DCEN
Argon gas
Gas hose
bottle
TP 1600
rear
panel
Ar
DCEN
Front panel
DCEP
Shield
Shield
gas Negative
gas input
connecto output
joint
r
TP 1600
front panel
pipe
Welding
cable
torch
workpiece
The relation between duty cycle and
welding current for TP-1600
Welding holder
electrode
workpiece
Aero
socket
Positive
output
Control cable of
torch switch
Return current
cable
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