Thermal Arc ULTRA FLEX 350, Руководство пользователя

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3. Turn AC power switch to the ON position. The
initial power up sequence will be complete in ap-
proximately three seconds.
4. Press the GMAW PULSED button to select the
pulsed MIG process. The light next to the button
should be on indicating that GMAW PULSED is now
active.
5. Press the SCHEDULE button and then use the
UP and DOWN buttons to select one of the eight
schedules. See the chart in this manual or the
sticker on the machine for schedule information.
6. For LOCAL control make sure the REMOTE
light is off by pressing the REMOTE button if nec-
essary. The light should toggle on and off as the
REMOTE button is pressed repeatedly.
7. To set the output proceed as follows: First set
the wire feed speed at the wire feeder. As in con-
ventional MIG welding, the wire feeder will control
the average amperage or heat input. Second set the
correct arc length by adjusting the output of the
power source. Press the A/V button to select voltage
as the adjustable value. The meter will display a
“reference number” between 0 and 440. The higher
the “reference number” the higher the pulsing rate
and arc voltage. (The actual number of pulses per
second will vary between approximately 30 and 300
as the reference number varies between 0 and 440.)
To increase arc length, increase the “reference
number” setting. To decrease arc length, decrease
the “reference number” setting. This is essentially
the same as adjusting voltage for conventional MIG
welding. As with conventional MIG welding, the
power source must be adjusted to correspond with
the correct heat input for a given wire feed speed
setting.
8. For REMOTE control make sure the REMOTE
light is on by pressing the REMOTE button if nec-
essary. Now the arc voltage can be controlled at the
wire feeder (if the feeder is equipped with a voltage
control). See Step 6 for an explanation of how to set
the output of the power source. If the wire feeder is
equipped with a digital meter, it will also display the
preset “reference number”, however it will show a
decimal point. For example, if the wire feeder dis-
plays 23.5 the power source will display 235.
9. The power source is now ready to weld. To
initiate the weld, activate the torch switch on the MIG
torch.
10. To end the weld, release the torch switch. As
with conventional MIG welding, a wire conditioning
sequence will leave the wire with a very small ball
on the end, thus making the next arc strike easier.
Optional Programming Pendant
An optional programming pendant allows any or
all eight of the factory pulse schedules to be over-
ridden. To use the pendant, turn the power source
OFF, and plug the pendant into the pendant plug on
the front of the power source. Then turn the power
source back ON. To work properly, the pendant
must only be plugged into the power source with the
power source turned off.
1. Select the GMAW PULSED mode on the front
panel.
2. Select the schedule to be over-ridden by press-
ing the SCHEDULE button and then using the UP
and DOWN buttons. The schedule number will ap-
pear on the programming pendant.
3. Select the parameter to be adjusted on the
pendant. The parameters are I
st
, T
pk,
I
pk
, and V
bak
.
4. Use the increase and decrease buttons to ad-
just the value.
NOTE: It is not the intent of this manual to
try to describe how to arrive at the correct
values for a “good” schedule. This manual
just provides the procedure.
5. Select the next parameter to be changed.
6. After all parameters have been changed, press
the SAVE button on the pendant. This will “perma-
nently” save the new data into the memory on the
power source. It will retain the new data even after
power has been removed from the machine. The
new data can still be over-ridden with the program-
ming pendant.
7. To restore the factory settings for the selected
schedule, press the RESET button on the pendant.
8. After all changes have been made, the power
source should be turned off and the pendant re-
moved.
SAFE
SAFE (Special Application Function Environment)
is a mode of operation that the Ultra Flex
®
series of
welding power sources can enter in order to cus-
tomize the welder for a special application. In most
cases this power source feature can be ignored.
The factory default settings are expected to be
sufficient for most of our customers. In the few
cases that the factory default settings are not ade-
quate, the Ultra Flex
®
can be programmed to meet
special specifications.
430429-465
OPERATION
5-8 February 28, 2000