MAWA-050A
6. Timing Chart
6-11
(6)
Touch Start (air type welding head)
The following is a timing chart for the case where the air type welding head is used.
START入力
出力
READY出力
SYNC OUT
出力
H-CY VLV
ヘッド動作
END 出力
溶接電流
GOOD/NG出力
PURGE
ガス開始入力
ヘッド下降
ヘッド上昇
約10ms
1～200ms ※1
※2
1～200ms ※3
1～200ms ※4
※5
初期電流設定時間
プリフロー
アフターフロー
設定時間
設定時間
*1 Start signal 1ST decision delay time. Refer to “4. (6)
(d) START signal input decision delay time.”
*2 Welding data creating time. About 60 ms for the first condition change or about 30 ms for the second or later change.
*3 Set value of “END signal output time.” Refer to “4. (6)
(c) END signal output time.”
*4 Set value of “GOOD/NG signal output time.” Refer to “4. (6)
(b) GOOD/NG signal output time.”
*5 It becomes about 1300 ms when the High speed SCH change (No Wave) in 4. (6)
(h) is OFF and about 100 ms when it is ON.
However, when the END signal output time or the GOOD/NG signal output time is 100 ms or longer, it is made the same as OFF
of the longer set time. Also, it takes about 1700 ms when the current flows when ENVELOPE in the Limit output judgment on
the Monitor select screen is ON. Refer to ENVELOPE of “4. (11) (d) Limit judgment output.”
Remarks
Connect the H-CY VLV output signal (Refer to “2. (2)-8 Connection with the torch head for touch
start.”) of the option I/O connector on the rear panel to the solenoid valve of the air type welding
head.
Set the pre-flow time, initial current time and initial current according to the head descent/ascent time,
distance between electrode and workpiece, production tact, etc. so that conditioning may be
performed. (In the case shown in the above figure, the timing of
of the pre-flow time can be
shortened up to the timing of
. And the timing of
of the initial current time can be shortened up
to the timing of
.)
START input
READY output
SYNC OUT
output
PURGE
Gas start input
H-CY VLV output
Head operation
Welding current
END output
GOOD/NG
output
Pre-flow
set time
About 10 ms
Head descent
Head ascent
Initial current set time
After-flow set
time
