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<Initial (Start) Tipdress request>
<Prewarning>
<End of Stepper>
1070 080 067-101 (2001.03) GB
PSI 6XXX.350 L1
The <Acknowledge Tip change> (see page 7-21) signal is followed by the <Initial
(Start) Tipdress request> signal .
The ensuing tip dressing enhances the proper fit of newly installed electrodes.
The tip dressing operation must be acknowledged with the <Tip dressed> signal.
The <Initial (Start) Tipdress request> signal may also be output on request by the <Re-
quest electrode condition> signal.
The <Prewarning> signal is set when the electrodes are worn down to a limit that has
been programmed in the [Sequence]. This signal indicates that the <End of Stepper>
(maximum electrode life) will soon be reached. The signal is reset when the <End of
Stepper> is actually reached.
NOTE
The wear limit may be programmed in the Stepper window of the Welding Parameters
menu.
The <Prewarning> signal may also be output on request by the <Request electrode
condition> signal.
This signal indicates that the <End of Stepper> (maximum electrode wear) has been
reached. Any further [sequence] may be disabled by appropriate programming. The sig-
nal is reset when the <Acknowledge Tip change> signal becomes high.
NOTE
A "Stop at end of the stepper (Yes/No)" may be programmed in the Basic-Setup in the
Global Stepper Setup window.
The <End of Stepper> signal may also be output on request by the <Request electrode
condition> signal.
Electrical connection
7-45
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