Duty Cycle And Overheating; Volt-Ampere Curves - Miller Axcess 300 CE Owner's Manual

4-4. Duty Cycle And Overheating

500
400
300
200
150
100
100% Duty Cycle At 225 Amperes
Continuous Welding
Overheating

4-5. Volt-Ampere Curves

80
70
60
50
40
30
20
10
0
0 100
20 25 30
10 15
% DUTY CYCLE
0
Minutes
CV MODE
200 300
AMPERAGE
3 PHASE
OPERATION
40 50 60 70 80 90 100
60% Duty Cycle At 300 Amperes
6 Minutes Welding
15
Reduce Duty Cycle
400 500 600
Duty Cycle is percentage of 10
minutes that unit can weld at rated
load without overheating.
If unit overheats, thermostat(s)
opens, output stops, and cooling
fan runs. Wait fifteen minutes for
unit to cool. Reduce amperage or
duty cycle before welding.
NOTICE − Exceeding duty cycle
can damage unit and void warranty.
4 Minutes Resting
A/V
OR
duty1 4/95 − 230 226-B
Volt-ampere curves show minimum
and maximum voltage
amperage output capabilities of
unit. Curves of other settings fall
between curves shown.
.
This volt-ampere
represents the dynamic output
of the unit with a static load.
va_curve1 4/95
OM-230 032 Page 15
and
curve