Miller Electric S-74DX - Manual (Page 25)

OM-1500-9 Page 21
6-8. Adjust Control
Adjust
1
1 Adjust Control
The Adjust control is used to
change various sequence parame-
ters, and to select various se-
quences. Refer to the section for
the function in question for informa-
tion related to using the Adjust con-
trol.
1
Non-CE Models CE Models
Start
Crater
Pre/Postflow
Sequence
6-9. Sequence Push Button
.
For more information on Setting
Sequence Parameters see Section 7-1.
• The Sequence push button allows the
selection of welding sequences. Five weld-
ing sequences are available. The default
sequence is the Weld sequence. The Weld
sequence is active on power up. Three
welding sequence LEDs are located above
the Sequence push button: Start, Crater,
and Preflow/Postflow. The applicable LED
illuminates to indicate which welding se-
quence is active.
• The LED illuminates to indicate that a weld-
ing sequence display mode other than Weld
is activate. Welding sequences other than
Weld must be set prior to initiating the arc.
When the unit enters a welding state, all se-
quence display modes are terminated and
the weld display mode is activated.
If zero time is programmed for a timed se-
quence except for Weld, that sequence will
be skipped.
• In the weld sequence display mode the Se-
quence push button LED is Off. When the
Sequence push button is pressed, the Se-
quence push button flashes and the Start
LEDs flash. In this condition, the unit is in the
Start sequence display mode, and Start se-
quence parameters are shown in the dis-
plays.
• When the Sequence push button is pressed
a second time, the Crater sequence LED
flashes. The Sequence push button LED re-
mains flashing. In this condition, the unit is
in the Crater sequence display mode, and
Crater sequence parameters are shown in
the displays.
• When the Sequence push button is pressed
a third time, the Preflow/Postflow sequence
LED flashes. The Sequence push button
LED remains flashing. In the Preflow display
mode the upper display shows the preflow
time and the lower display indicates the ab-
breviation PRE, to inform the operator that
preflow time is displayed. If the upper dis-
play push button is pressed, the Adjust con-
trol can be used to adjust preflow.
If the lower display push button is pressed, the
Adjust control can be used to select between
preflow PRE and postflow POST. When
POST is selected, the upper display can be
used to specify postflow time.
• When the Sequence push button is pressed
a fourth time, the unit returns to the welding
sequence display mode.
1
3
2
Welding Sequence Diagram
Preflow
Time
Start
Time
Weld
Time
Crater
Time
Postflow
Time
1 Sequence Push Button
2 Sequence Push Button LED
3 Welding Sequence LEDs
1
2
3
Non-CE Models CE Models