REHM FOCUS.ARC P 250, Operating Instructions Manual

Page: 32 / 82

Function description
32
t (s)
Current
[A]
Welding
current
Gas post-
flow time
Gas pre-
flow time
1.
2.
Welding
time
5.2.8 2 cycle interval with slope-down (Slope)
2 cycle interval operating mode procedure with slope-down (Slope):

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 welding time is running

After the set welding time has expired, the welding current is reduced to
the value set for the slope-down current over the duration of the slope-
down time

Wire feed stops after the slope-down time has expired

Freeband and freeband control are executed

The inert gas continues to flow

The pause time is running

After the pause time has expired, the welding process is restarted and
the welding process runs again

2. cycle Release the torch trigger

For the duration of the slope-down time, the welding current is reduced to
the value set for the slope-down current

The wire feed stops after the slope-down time has expired

Freeband and freeband control are executed

The inert gas is switched off after the gas post-flow time has expired
Figure 19: 2 cycle interval operating mode procedure with slope-down (Slope)