MAWA-050A
6. Timing Chart
6-2
*1 The start signals 1ST and 2ND are used for welding start.
*2 Start signal 1ST decision delay time. Refer to “4. (6)
(d) START signal input decision delay time.”
*3 Welding data creating time. About 60 ms for the first condition change or about 30 ms for the second or later change.
*4 After the initial current start signal H-ST1 is input, the initial current is started after the lapse of the pre-flow set time.
*5 Set H-HEAD UP and H-END signals’ output times to 200 ms. Refer to “4. (6)
(g) [Op-IO] H-END signal output time” and “(i)
[Op-IO] H-HEAD UP signal output time.”
*6 Set the initial current time longer than the time when the head moves to weld point (main welding). If shorter than the moving
time to weld point (main welding), the H-ST2 signal is not input by the end of the initial welding, and therefore the ST2 time error
occurs.
[Example setting] When the head moving distance is 2 mm (= 1 mm of pull-up 1 mm of head follow-up moving height)
and head pull-up speed setting is 1 (= 40 mm/s), the standard initial current time setting becomes 180 ms (about 100 ms of
head controller processing time + about 50 ms of head moving time + about 30 ms of standby time).
*7 Set value of “END signal output time.” Refer to “4. (6)
(c) END signal output time.”
*8 Set value of “GOOD/NG signal output time.” Refer to “4. (6)
(b) GOOD/NG signal output time.”
*9 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.”
*10 If the WELD STOP signal is input before the H-ST1 signal is input, the READY signal is turned OFF and the welding power
supply does not receive the H-ST1 signal during that period. Therefore, since welding does not start and the END signal is not
output, the head remain stopped at weld point (initial current). To clear the state, you need to turn the head controller off and
then back on or operate the emergency stop for the welding power supply and then reset.
