5 Operating and display elements Page 29
Stud welding unit operating manual Date: July 2021
ALPHA 850 07.2021 / EN Rev.: A
“Weld time” potentiometer
The weld current switch-on time is set from the potentiometer.
Function: Selection of weld time.
Setting range: 0.1 s – 1.0 s / 10 ms – 100 ms
The setting is done according to the weld process BH 10 or
BH 100. The appropriate setting range is chosen using the
operating mode selector switch.
Note: Guidelines for weld time are shown in Chapter 7.2.
“Weld current” potentiometer
The required weld current is set from the potentiometer.
Function: Selection of weld current range.
Setting range: 100 A – 850 A
The welding currents can be continuously set based on the
requirements of the weld process used (short cycle/drawn
arc).
Note: Guidelines for weld current are shown in Chapter 7.2.
Operating mode selector switch
The toggle switch is for presetting the weld time for the welding process used:
Drawn arc process: Scale value of welding timer (t × 1)
Short cycle process: Scale value of welding timer (t × 0.1)
Function: Selection of weld process.
Switch position: = drawn arc process (BH 100)
= Short cycle process (BH 10)
The setting is done according to the weld process BH 10 or
BH 100.
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