5.10.4 Arcforce; 5.10.5 Hotstart; 5.10.6 Antistick; Voltage Reducing Device - EWM Taurus 505 VRD Basic TDM Operating Instructions Manual

Design and function

Voltage reducing device

5.10.4 Arcforce

Operating
element
DYN
- +
m/min

5.10.5 Hotstart

The hotstart device improves the ignition of the stick electrodes using an increased ignition current.
a) = Hotstart time
b) = Hotstart current
I = Welding current
t = Time

5.10.6 Antistick

5.11 Voltage reducing device
To increase safety, particularly in hazardous environments (like shipbuilding, pipe construction or mining),
the machine is equipped with the VRD (Voltage-reducing device) .
The VRD signal light is illuminated, when the voltage reducing device is operating without fault and the
output voltage is reduced to a value specified in the relevant standard (see technical data).
38
Action Result
Select arcforcing welding parameter
LED for the button
Arcforcing setting for electrode types:
(Setting range -40 to 40)
Negative values
Values around zero Basic
Positive values
is on.
Rutile
Cellulose
Figure 5-15
Anti-stick prevents the electrode from annealing.
If the electrode sticks in spite of the Arcforce device, the
machine automatically switches over to the minimum
current within about 1 second to prevent the electrode
from overheating. Check the welding current setting
and correct according to the welding task!
Figure 5-16
Display
099-005261-EW501
11.04.2012