MAWA-050A
5. Welding
5-12
Operation and control flow of the normal mode
Pulse TIG welding power supply
*2
*2
*1
*2
*2
*2
*1
H-END signal output=ON
END signal output=ON
H-HEAD UP output=ON
H-END signal received
Initial current start
Touch start head
Start of moving to mid-point
Gas output signal:GAS=ON
Welding start signal:2ND=ON
Welding start signal:1ST=ON
Main welding start signal:ST2=ON
Start of after-flow
End of after-flow
End of pre-flow set time
Start of pre-flow set time
Judgment signal output=ON
End of initial current
MH-TL01A, MH-109TA
Gas SOLV=OFF
Gas SOLV=ON
(Gas SOLV=continuously ON)
(Gas SOLV=continuously ON)
(Gas SOLV=continuously ON)
(Gas SOLV=continuously ON)
End of moving to mid-point
End of all welding processes
INIT current start signal:ST1=ON
: operation and control item
: operation and control flow
: interface process
End of moving to mid-point(ST point)
End of moving to weld point(INIT CUR)
End of moving to weld point(MN welding)
Start of moving to weld point(MN welding)
Start of moving to weld point(INIT CUR)
MAWA-050A(touch start)
Gas output signal rcvd.
Main welding start signal rcvd.
INIT CUR start time rcvd.
HEAD UP start signal rcvd.
Start of moving to mid-point(ST point)
*3
*3
*3
Start of MN welding after above
*3
Weld-pt. detect sensor=ON
light-entered, LED ON
MH-TL01A: ON when
light-shielded, LED OFF
MH-109TA: ON when
*1: Gas flow time excluding the welding condition
*2: Operation and control contents of welding condition settings
*3: Set the initial current time (FST) longer than the time from when the initial current starts to when head main welding start
signal:ST2 is turned ON.
[Reference setting] When the distance between head weld point (initial current) and weld point (main welding) is 1.0 mm and the
moving speed setting is 1 (= 40 mm/s), the initial current time (FST) is set to 180 ms. If the time shorter than this is set, the
ST2 time error may occur.
[Recommended setting] Setting the initial current time (FST) to 0 ms selects the auto mode, and the main welding starts
simultaneously with the completion of moving to the weld point (main welding).
