Antistick; Options (Additional Components); Electronic Gas Flow Control (Ow Dgc); Wire Reserve Sensor (Ow Wrs) - EWM M3.7X-O Operating Instructions Manual

5.4.3

Antistick

5.5

Options (additional components)

Does not apply to wire feeders of the Drive XQ IC 200 series.
5.5.1

Electronic gas flow control (OW DGC)

The connected gas line has to have a preset pressure of 3–5 bar.
The electronic gas flow control (DGC) regulates the optimum gas flow rate for the respective welding pro-
cess (optimally preset from the factory). This helps avoid welding errors caused by too much (gas blast)
or insufficient shielding gas (shielding gas cylinder empty or gas supply interrupted).
The required gas flow rate can be controlled by the user and corrected if necessary (nominal valuesbe-
f ore welding). In addition, when used in combination with Xnet software (optional), the exact gas con-
sumption can be recorded.
The parameter is selected by pressing the parameter display push-button on the right side. The signal
light " " is illuminated. The value unitscan be in litres per minute "l/min" or Cubic Feet Per Hour "cFH"
(adjustable with special parameters P29 > see 5.9 chapter). During the welding process, these nominal
values are compared with the actual values. If these values differ more than the specified error threshold
(special parameters P28) the error message "Err 8" is output and the continuous welding process is stop-
ped.
5.5.2

Wire reserve sensor (OW WRS)

Minimizes the risk of seam errors due to early detection and display (signal light " End") with about 10 %
remaining wire. At the same time, the forward-looking production allows the reduction of the auxiliary pro-
cess times.
5.5.3

Wire spool heater (OW WHS)

Prevention of condensation on the welding wire due to adjustable temperature (special parameters
P26 > see 5.9.3.23 chapter) of the wire spool heater.
5.6

Access control

To prevent people from unauthorised or inadvertent changing of the welding parameters at the machine,
entering values on the control can be blocked by using the key switch.
With the key switch in position
In the key position the following functions or parameters can not be changed:
• No adjustment of the operating point (welding power) in programs 1 - 15.
• No change of welding type or operating mode in programs 1 - 15.
• No welding task switching (JOB block operation P16 is possible).
• No change of special parameters (except P10). Restart is required.
Saving or deleting favourites is locked.
5.7

Voltage reducing device

Only machine variants with the (VRD/SVRD/AUS/RU) code are equipped with a voltage reduction device
(VRD). The VRD is used for increased safety, especially in hazardous environments such as shipbuilding,
pipe construction or mining.
A VRD is mandatory in some countries and required by many on-site safety instructions for power
sources.
The VRD > see 4 chapter signal light is illuminated when the voltage reduction device is operating without
f ault and the output voltage is reduced to a value specified in the relevant standard (see technical data).
099-5TLPXQ-EW501
15.12.2022
The Antistick feature prevents the electrode from annealing.
Should the electrode stick despite the Arcforce feature, the machine au-
tomatically switches to the minimum current within approx. one second.
This prevents the electrode from annealing. Check the welding current
setting and correct for the welding task in hand.
Figure 5-41
, all functions and parameters can be configured without any restriction.
Functional characteristics
Options (additional components)
53