IS-300A
4. How to Operate Screens
4-30
The WE3 STOP signal shuts off current immediately when input during the WE3
period, switching the sequence to HOLD. The WE3 STOP signal shuts off
current immediately after the WE3 starts (the current is supplied for about 1
cycle) when input before the WE3 period, switching the sequence to HOLD.
When the welding stop signal is input before the start signal is received, the
welding stop error occurs.
When WELD STOP OFF TIME is set, the current is supplied for the time period
in WE1/2/3.
This weld time is the WELD repetition time except for the INTERVAL time.
The welding is stopped within 2 control cycles (for example, when the frequency
is 1 kHz, 1 control cycle is 1 ms. Therefore, it is 2 ms.) after the welding stop
signal is input.
Example)
WELD STOP OFF TIME: 60 ms, WELD: 25 ms, INTERVAL: 10 ms, and
repetition: 3
When the welding stop signal is input within the first 60 ms
The welding current is supplied in order of WELD: 25 ms, INTERVAL: 10 ms,
WELD: 25 ms, INTERVAL: 10 ms, and 10 ms, and stopped. (INTERVAL is not
included in WELD STOP OFF TIME.)
When the welding stop signal is input after 60 ms
The welding is stopped at the time.
This is also effective when the off time (OFF) is set. A welding is stopped when
the signal is input before each WE. A welding is performed when the signal is
released before each WE.
(g) WELD2 STOP/WELD COUNT
Set external input pin 14.
When WELD2 STOP is selected
The weld count will not be checked. The sequence will proceed to COOL2 if
external input pin 14 is closed during the WELD2 sequence operation. (Refer to
Note 2, “Current shutoff function” in (f).) When the WE2 STOP signal is
input before the start signal is input even if the WELD1 is set, the welding stop
error occurs.
When WELD COUNT is selected
The weld count will be checked. (Refer to (10)(a).)
(h) WELD3 STOP/COUNT RESET
Set external input pin 25.
When WELD3 STOP is selected
The count will not be reset. The sequence will proceed to HOLD if external
input pin 25 is closed during the WELD3 sequence operation. (Refer to Note 2,
“Current shutoff function” in (f).) When the WE3 STOP signal is input before
the start signal is input even if the WELD1 or the WELD2 is set, the welding
stop error occurs.
When COUNT RESET is selected
The count will be reset. (Refer to (10)(a).)
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