Miller Electric OM-842 - Manuel (Page 29)

OM-842 Page 25
7. Press Right/Increase, and the display shows:
# 0 X W I R E – F E E D S T A R T
D E L A Y = X X .X S E C.
8. Define the wire feed start delay as desired.
Wire feed start delay is the amount of time between the
end of initial current and when the wire feed user relay
(see Section 2-3) changes states. A delay time of 0
means the wire feed relay changes state immediately
at the end of initial current. A delay time of 3.5 means
the relay changes state 3.5 seconds after the end of ini-
tial current.
The wire feed relay change cannot be delayed beyond
the end of weld current. When weld current ends, the
wire feed relay changes states whether or not the de-
fined start delay time has elapsed.
The range for start delay time is 0.0 to 25.0 seconds, in
increments of 0.1 seconds.
9. Press Right/Increase, and the display shows:
# 0 X W I R E – F E E D S T O P
D E L A Y = X X .X S E C.
10. Define the wire feed stop delay as desired.
Wire feed stop delay is the amount of time between the
end of weld current and when the wire feed user relay
(see Section 2-3) change states. A delay time of 0
means the wire feed relay changes state immediately
at the end of weld current. A delay time of 7.0 means
the relay changes state 7.0 seconds after the end of
weld current.
The wire feed relay change cannot be delayed beyond
the end of postflow. When postflow ends, the wire feed
relay changes states whether or not the defined stop
delay time has elapsed.
The range for stop delay time is 0.0 to 25.0 seconds, in
increments of 0.1 seconds.
11. Press Right/Increase, and the display shows:
* * * * * * D R Y R U N * * * * * *
U S E R E M O T E T O S T A R T
12. If desired, press Start/Increase on the Remote Pend-
ant to carry out a dry run of the program (see Section
5-7 for information on the dry run feature). To place the
microprocessor control in the Ready condition, press
Right/Increase.
13. In the Ready condition the microprocessor control is
ready to have another program entered or to execute a
program. For information on executing a program, refer
to Section 6.
5-3. Semi-Automatic Mode
If needed, see Section 5-1B for
information on selecting and defining
a parameter. NOTE
Weld output options, such as the use
of pulsing, high frequency, and ac or
dc output, affect how a program is
entered in the Semi-Automatic
mode. Be sure to follow all applicable
steps, and only the applicable steps,
as determined by the selected
options. NOTE
This section covers program entry in
all five Semi-Automatic modes.
Differences between one mode and
another are stated. Be sure the
desired Semi-Automatic mode has
been defined on DIP switch SW1
(see Section 2-4) before using the
following procedure to enter a
program.
NOTE
A. Procedure Up To Pulse Mode Selection
1. Turn on welding power source, if applicable.
2. Place the Mode Selector switch in the Semi-Automatic
position.
3. Place the Program/Run/Reset keyed switch in the Re-
set position, and then in the Program position. The
initial displays will be shown.
4. When the repeating displays (explained in Section
5-1F) are shown, press Right/Increase.
If the Process Selector switch is in the ac output posi-
tion, go to Step 5. If the Process Selector switch is in a
dc output position, go to Step 8.
5. The display shows:
# 0 X B A L A N C E C O N T R O L
E N = X X % E P = X X %
6. If applicable, define the program number (see Section
5-1C). Define the electrode negative value for the ac
output square wave (see Section 4-3) as desired.
The range for percentage of waveform in electrode
negative is 46% to 68%, in increments of 2%.
7. Press Right/Increase, and go to Step 8.
8. The display shows:
H I G H F R E Q U E N C Y
> X X X X X X X X X <
9. Press Parameter Select to display the desired choice.
If the Process Selector switch is in the ac output posi-
tion, the choices are Start Only high frequency or
Continuous high frequency.