7. Welding operation
WMD078TE0PAA07
69
7.2 Welding
Here are some points of welding operation.
•
There are three control processes to weld.
Use CONTROL process select button to set.
•
With CRATER and INI.&CRATER settings, it is
possible to apply repetitive crater welding
motion (crater repeat).
•
The arc start error (Err6) occurs if voltage
detection is not executed after turning on the
torch switch. At that time, output is automat-
ically turned off.
•
In case of no arc (arc outage) state due to
separating the torch from the base metal
while welding, gas flow and wire feed stop,
resulting in welding termination without error
indication.
7.2.1 NO CRATER
•
Apply only main welding. (Initial welding and
crater welding are not applicable.)
•
Suitable for tack welding, repetitive welding
of short weld section and thin plate welding.
•
Operation: Turn on/off the torch switch to
start/stop welding arc respectively.
7.2.2 CRATER
•
Apply main welding followed by crater weld-
ing. (With crater welding, it is possible to fill
the pit at the weld stop)
•
Suitable for middle thick plate welding.
•
Operation: Turn on/off the torch switch
twice.
Arc: ON
Arc: OFF
Torch: ON
Torch: OFF
Weld conditions
Torch switch
Tpf: Gas pre-flow time
Taf: Gas post-flow time
☆
: Arc start
★
: Arc end
ON
OFF
ON
OFF
Tpf
Taf
★
☆
Main welding
Gas supply
Wire feed
Weld voltage
Weld current
Wire
run-in speed
Burnback
time
Arc: OFF
Torch: OFF
Torch: ON
(Change arc type)
Arc for Crater
Arc: ON
Arc: Continue
Torch: ON
Torch: OFF
(Self-hold)
Self-hold: It retains the torch switch state until the next
time the switch is triggered. The self-hold is cancelled if
no-arc state lasts 0.5 second or longer while welding.
Torch switch
Gas supply
Wire feed
Weld voltage
Weld current
Weld conditions
ON
OFF
ON
OFF
Tpf
Taf
★
☆
Wire
run-in speed
Burnback
time
Main welding
OFF
ON
Crater
Start
End
Self-hold
Tpf: Gas pre-flow time
Taf: Gas post-flow time
☆
: Arc start
★
: Arc end
