REHM FOCUS.ARC P 250, Руководство по эксплуатации

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Function description
29
t (s)
Current
[A]
Welding
current
Gas post-
flow time
Gas pre-
flow time
1.
2.
Spot time
5.2.5 Spot
The spot welding mode is recommended for welding with a fixed spot welding
time from 0.1 seconds.
The stationary welding process runs with a fixed spot welding time, unless the
trigger is released prematurely during the welding.
The program runs to the end after expiry of the set spot welding time or after
releasing the torch trigger during the welding.
Spot function procedure:

1. cycle Operate the torch trigger

The inert gas solenoid valve opens

After the set gas pre-flow time has expired the power unit is switched on

Welding voltage on

Wire feed runs at the initial wire feed speed

Arc is ignited after the welding wire contacts the workpiece

The feed switches to the set wire feed speed of the welding process

The welding current flow is at the set value set for welding

The spot time (welding time) is running

The welding process is automatically terminated after the set spot time
has expired

Wire feed stops

Freeband and freeband control are executed

The inert gas is switched off after the gas post-flow time has expired

2. cycle - Release the torch trigger

By releasing the torch trigger during the spot time, the welding process is
terminated immediately and the inert gas is switched off after the gas
post-flow time has expired.
Figure 16: Spot operating mode procedure