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Electrical connection
<Weld complete> (WC)
7-42
If the welding operation of a single spot is properly completed by the end of the last
[weld time], the signal <Weld complete> is output for as long as the <Start_1> signal is
true, or, if the <Start_1> signal has been cleared, for the programmed number of millisec-
onds.
The <Weld complete> signal becomes high in single spot mode after each weld opera-
tion and in repeat mode after every spot. In seam mode, this signal indicates that a seam
has been completed without any fault.
Example: With <Start_1> cleared in single spot, repeat and seam modes, WC starts 20 ms
before the end of the hold time [HLD] and stays high for the period as programmed.
<Start_1>
[WLD]
Example: With <Start_1> set in single spot mode, WC starts upon the end of the
[WLD]
Figure 24:
<Weld complete> (WC) programming example
"Quick robot communication"
If the <Weld complete> (WC) signal is used as a start signal for the welding robot, e.g.,
delays in signal processing by the robot and its drives can be accounted for by program-
ming a negative value for the WC.
Any such delays can be eliminated at least in part by scheduling in the WC so as to start
already in the hold time [HLD].
PSI 6XXX.350 L1
[HLD] = n milliseconds
-20
- value
hold time [HLD] and stays high until <Start_1> is reset.
<Start_1>
[HLD] = n milliseconds
- value
0
+ value
WC period
0
+ value
WC period
1070 080 067-101 (2001.03) GB
ms
ms
ms
ms
ms
ms
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