Duty Cycle And Overheating; Static Characteristics - Miller Dynasty 280 Series Owner's Manual

1-1. Duty Cycle And Overheating

4-6. Duty Cycle And Overheating
300
250
200
150
100
50
0
10
250 A at 60% Duty Cycle For Stick And TIG Process
Overheating
4-7.

Static Characteristics

The static (output) characteristics of the welding power source can be described as drooping during the SMAW and GTAW processes. Static
characteristics are also affected by control settings (including software), electrode, shielding gas, weldment material, and other factors. Contact
the factory for specific information on the static characteristics of the welding power source.
OM-253086 Page 2
A complete Parts List is available at www.MillerWelds.com
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Complete Parts List is available at www.MillerWelds.com
% Duty Cycle
0
15
Minutes
Duty Cycle is percentage of 10 minutes that
unit can
overheating.
If unit overheats, output stops, a Help mes-
sage is displayed (see Section 11-4), and
cooling fan runs. Wait fifteen minutes for unit
to cool. Reduce amperage or voltage, or duty
cycle before welding.
NOTICE – Exceeding duty cycle can damage
machine or torch and void warranty.
3 Input)
208V Input)
230V, 1 Input)
208V, 1 Input)
-
A or V
OR
Reduce Duty Cycle
weld at rated load without
230V Input)
100
247219-B
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