.
A complete Parts List is available at www.MillerWelds.com
OM-270536 Page 62
B.
3T Specific Trigger Method
1
3T (Specific Trigger Operation)
Sequencer is required to reconfigure for 3T.
3T requires a specific type of remote con-
trol with two independent momentary-
contact switches.
One will be designated
initial switch, and it must be connected be-
tween Remote 14 receptacle pins A and B.
The second will be designated as the final
switch, and it must be connected between
Remote 14 receptacle pins D and E.
2
Amperage Adjustment Control
To select 3T, turn amperage adjustment con-
trol control.
Definitions:
Initial slope rate
is the rate of amperage
change determined by the initial amperage,
initial slope time, and main amperage.
Final slope rate
is the rate of amperage
change determined by the main amperage, fi-
nal slope time, and final amperage.
Operation:
A.
Press and release initial switch within 3/4
second to start shielding gas flow. To stop
the preflow sequence before preflow time
elapses (25 seconds), press and release
final switch. The preflow timer will reset
and the weld sequence can be started
again.
.
If an initial switch closure is not made
again before preflow time ends, gas flow
stops, the timer resets, and an initial
switch press and release is necessary to
start the weld sequence again.
B.
Press initial switch to start arc at initial
amps. Holding switch will change amper-
age at initial slope rate (release switch to
weld at desired amperage level).
C.
When main amperage level is reached,
initial switch can be released.
D.
Press and hold the final switch to de-
crease amperage at final slope rate (re-
lease switch to weld at desired amperage
level).
E.
When final amperage has been reached,
the arc extinguishes and shielding gas
flows for the time set on the Postflow con-
trol.
Application:
With the use of two remote switches instead
of potentiometers, 3T gives the operator the
ability to infinitely increase, decrease, or
pause and hold amperage within the range
determined by the initial, main, and final am-
perages.
Current (A)
3T Trigger Operation
*
*
*
*
*
*
*
A
B
C
D
E
Preflow
Initial Amps /Initial Slope
Main Amps
Final Slope /Final Amps
Postflow
* Arc can be extinguished at any time by pressing and releasing both initial and final switches, or by lifting the torch and breaking the arc.
P/R
I
P/H
I
R
I
P/H
I
R
I
P/H
F
R
F
P/H
F
P/R = Push and Release (in less than
3/4
of a second)
P/H = Push and Hold
R = Release
I = Initial Switch
F = Final Switch
Summary of Contents for 907684001
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