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18
8 Components of the Stud Welding Unit
8.2 Control Panel and Display
1
2
3
4
56789
10A
10B
1 - Display
2 - Increase
3 - Library mode
(stud diameter)
4 - Automatic mode
5 - Decrease
6 - Solenoid
7 - Trigger
8 - Contact
9 - Locked
10 - Stand-by indicator
10A - Ready
10B - Load
The condition of the stud welding unit is monitored after switching-on. The display
shows three bars and the following parameters are monitored:
– Deviation from usual charging time,
– Unit temperature,
– Defective thyristor,
– Control discharge relay.
After the self-test, the charging voltage last set is shown in the display. During the
self-test, an automatic self-formation of the capacitors is performed, among other
things. The self-formation is a step-by-step loading of the capacitors in a certain
amount of time. This function contributes to longer capacitor service life. If the char-
ging voltage last set is above 100 V, an automatic self-formation of the capacitors is
performed during the self-test.
The charging voltage is shown at the display (1).
The charging voltage is set with the arrow keys (
higher (2) - lower (4)).
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