Duty Cycle And Overheating - Miller DYNASTY 200 DX Owner's Manual

4-4. Duty Cycle And Overheating

250
200
TIG (115V INPUT)
150
100
STICK (115V INPUT)
50
0
10
Overheating
OM-2240 Page 16
STICK
20 30 40
% DUTY CYCLE
100%dutycycle
Continuous Welding
90 A @ 100% Duty Cycle For 115 Volt Single-Phase Stick Process
100 A @ 100% Duty Cycle For 115 Volt Single-Phase TIG Process
6 Minutes Welding
130 A @ 60% Duty Cycle For Stick Process (Other Voltages)
150 A @ 60% Duty Cycle For TIG Process (Other Voltages)
0
Minutes
TIG
50 60 70 80 90
4 Minutes Resting
15
OR
Reduce Duty Cycle
Duty Cycle is percentage of 10 min-
utes that unit can weld at rated load
without overheating.
If unit overheats, output stops, a
Help message is displayed (see
Section 7-3), and cooling fan runs.
Wait fifteen minutes for unit to cool.
Reduce amperage or voltage, or
duty cycle before welding.
Y Exceeding duty cycle can
damage unit and
warranty.
100
A or V
void
210 167