Miller Dynasty 280 Series Owner's Manual page 68

Main Amps
Initial Slope
C. 4T, 4Tm, And 4TL Specific Trigger Method
C. 4T, 4Tm, And 4TL Specific Trigger Method
Initial Amps
Preflow
P/H R
4T And 4Tm Torch Trigger Operation
Current (A)
Initial Slope
Initial Amps
Preflow
P/H R
P/H = Push and hold trigger; R = Release trigger
*4T only: P/R = Push trigger and release in less than 0.75 second
4TL Torch Trigger Operation
Current (A)
Initial Slope
Initial Amps
* *
Preflow
P/H R P/R P/R
P/H = Push and hold trigger; R = Release trigger; P/R = Push trigger and release in less than
0.75 seconds
Current (A)
**Arc can be extinguished at final slope rate at any time by pushing and holding trigger.
Initial Slope
Initial Amps
* *
Preflow
P/H R P/R P/R
OM-253086 Page 60
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Final Slope
*P/R P/H
*P/R
Main Amps
*P/R P/H
*P/R
Main Amps
* *
* *
* *
P/R
P/R
Main Amps
* *
* *
P/R
P/R
Final Amps
Postflow
R
4T And 4Tm Application:
Use 4T or 4Tm (modified) trigger method
when the functions of a remote current con-
trol are desired, but only a remote on/off con-
trol is available.
4T* allows the operator to toggle between
Final Slope
weld current and final current.
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Final Amps
Postflow
4TL Application:
R
The ability to change current levels without
either initial slope or final slope, gives the op-
erator the opportunity to adjust filler metal
without breaking the arc.
4TL (mini logic) allows the operator to toggle
between initial slope or main amps and initial
amps. Final Amperage is not available. Final
slope always slopes to minimum amperage
and ends the cycle.
Final Slope
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Postflow
P/R P/H
Final Slope
* *
Postflow
P/R P/H
When a remote switch is connected to
the welding power source, use the re-
mote switch to control the weld cycle.
Amperage is controlled by the welding
power source.
When a remote switch is connected to
the welding power source, use the re-
mote switch to control the weld cycle.
Amperage is controlled by the welding
power source.