Design and function
Voltage reducing device
099-005149-EW501
11.08.2016
5.4.1.1 Reset to factory settings
All special parameters saved by the user will be overwritten by the factory settings!
Figure 5-24
Initialisation complete
All customised welding parameters haven been overwritten by the factory settings.
5.4.1.2 Special parameters in detail
Ramp time for wire inching (P1)
The wire inching starts with a speed 1.0 m/min for 2 secs. It is subsequently increased to a ramp function
to 6.0 m/min. The ramp time can be set between two ranges.
During wire inching, the speed can be changed by means of the welding parameter setting rotary dial.
Changing the speed has no effect on the ramp time.
Latched/special-latched tap start (P9)
In latched – tap start – operating mode it is possible to switch straight to the second step by tapping the
torch trigger; it is not necessary for current to be flowing.
The welding can be halted by pressing the torch trigger for a second time.
Electronic gas flow control, type (P22)
Active only in machines with integrated gas flow control (option ex works).
Adjustment may only be carried out by authorised service personnel (basic setting = 1).
5.5 Voltage reducing device
The voltage reducing device is a requirement in some countries and in many internal company safety
guidelines for power sources.
The voltage reduction device is only active on VRD/AUS/RU machine versions.
To increase safety, particularly in hazardous environments (like shipbuilding, pipe construction or mining),
the machine is equipped with the VRD (Voltage-reducing device) voltage reduction device.
The VRD > see 4.3 chapter signal light is illuminated, when the voltage reduction device is operating
without fault and the output voltage is reduced to a value specified in the relevant standard (see technical
data > see 8 chapter).
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