Telwin ELECTROMIG 550 SYNERGIC Manuel D'instructions page 9

- : Duration of inrush current. If the parameter is set to zero (OFF), this function
is disabled. Settings from 0 (OFF) to 3 Sec. Factory value: OFF.
Pressing knob C-5 again, the following appears:
- : Inrush current.
Pressing knob C-5 again, the following appears:
- : Welding current SLOPE DOWN. Used to gradually reduce the current on
releasing the torch button. Settings from 0 (OFF) to 3 Sec. Factory value: OFF.
Pressing knob C-5 again, the following appears:
: Post-gas. Use to adapt the protective gas outflow starting from when welding
-
is stopped. Settings from 0 to 10 Sec. Factory value: 1Sec.
Pressing knob C-5 again, the following appears:
- + : It increases or decreases the wire feed speed according to the
display. Adjustment from -5 to +5m/min. Factory value: 0 m/min.
Pressing knob C-5 again, you return to synergistic mode.
7.3 Insertion of remote command (on request)
On insertion of the remote command in the specific connector (Fig. B-13) the icon
switches on .
Adjustment can exclusively be from the remote command and precisely:
a) Command with one potentiometer: allows adjustment of the speed of the wire in
mode or the thickness in
b) Command with two potentiometers: allows you to adjust the speed of the wire
in mode or the thickness in
allows adjustment of the welding voltage in
shape in mode.
8. CONTROLLING THE TORCH PUSH-BUTTON
8.1 Setting the torch push-button control mode (Fig. l-5)
Press the knob (Fig. C-5) for at least 3 seconds to access the parameter setting menu.
When menu 2 appears, press again.
8.2 Torch push-button control mode
It is possible to set 4 different torch push-button control modes:
2T mode
: welding begins when the torch push-button is pressed and ends when the push-
button is released.
4T mode
: welding begins when the torch push-button is pressed and released, and ends
only when the torch push-button is pressed and released a second time. This mode is
useful for long welding operations.
4T Bi-Level mode
: welding begins when the torch push-button is pressed and released. Each time
it is pressed/released it switches from current
It only terminates when the torch push-button is pressed for a certain set time.
Spot welding mode
: Used for MIG/MAG spot welding with control of welding duration.
9. INFO MENU
Both in manual mode and synergic mode
press knob C-5 for at least 3 seconds. On appearance of menu 3 (Fig. I-6), press
again: turning the knob C-5 we can obtain information on the software installed.
Pressing knob C-5 again, you return to manual (or synergic) mode.
10. UNIT OF MEASUREMENT MENU
Both in manual mode and synergic mode
menu, press knob C-5 for at least 3 seconds. On appearance of menu 4 (Fig. I-7),
press again: now you can set the metric or imperial units of measurement. Pressing
knob C-5 again, you return to manual (or synergic) mode.
11. CALIBRATION MENU
Only in manual mode , to access the
least 3 seconds. On appearance of menu 5 (Fig. I-8), press again: now you can
calibrate the welding machine so it complies with directive EN50504-4. Pressing knob
C-5 again, you return to manual (or synergic) mode.
12. G.R.A. DISABLING MENU (AQUA version only).
The welding machine automatically acknowledges presence of the G.R.A. Both in
manual mode and synergic mode
knob C-5 for at least 3 seconds. On appearance of menu 6 (Fig. I-9), press again: now
you can disable OFF or re-activate ON the G.R.A.
Pressing knob C-5 again, you return to manual (or synergic) mode.
13. MMA WELDING: PROCESS DESCRIPTION
13.1 GENERAL PRINCIPLES
- It is essential to follow the recommendations provided by the manufacturer on the
electrode packaging which indicates the correct electrode polarity and relative rated
current.
- Welding current is regulated to suit the diameter of the electrode being used and the
type of soldering to be performed; an example of the currents used for the various
electrode diameters can be seen below:
mode.
mode, while the second potentiometer
mode or the welding seam
to current and vice versa.
, to access the INFO menu,
, to access the
menu, press knob C-5 for at
, to access the menu, press
Ø Electrode (mm)
1.6
2.0
2.5
3.2
4.0
5.0
6.0
8.0
- One can see that for the same diameter electrode, high levels of current will be
used for flat welding, whilst lower current levels will be used for vertical or overhead
welding.
- The mechanical characteristics of the welded joint are determined by the intensity
of the selected current and also other welding parameters such as the length of the
arc, the operating speed and position, the diameter and quality of the electrodes
(to ensure correct conservation, use special packaging or containers to store and
protect the electrodes against humidity).
WARNING:
Instability of the arc due to the composition of the electrode can occur,
depending on the brand, type and thickness of the electrode coatings.
13.2 PROCEDURE
- Keeping the mask IN FRONT OF YOUR FACE, rub the tip of the electrode on the
piece to be welded, moving as if striking a match; this is the most correct method for
igniting the arc.
WARNING: DO NOT TAP the electrode against the workpiece, which could
damage the coating and make arc striking difficult.
- As soon as the arc has struck, try to keep the electrode at a distance from the
workpiece that is equivalent to the diameter of the electrode being used, and keep
this distance as constant as possible while welding; remember that the electrode
angle while moving forward must be approx. 20-30 degrees.
- At the end of the welding seam, take the electrode end slightly back as to the forward
direction, above the crater to fill it, then quickly lift the electrode from the weld pool
to switch off the arc (Aspects of the welding seam - FIG. L).
13.3 MMA mode setting
MMA mode setting ( ) (Fig I-10)
Knob C-5 adjusts the welding current and diameter of the electrode recommended.
The welding voltage and current is shown on the display only during welding.
Advanced parameter setting: (Fig I-11)
Press the knob C-5 for at least 3 seconds to access the advanced parameter setting
menu:
- : ON/OFF; this enables or disables the device that reduces the loadless output
voltage (ON or OFF setting). Factory value: OFF. With the VRD enabled, operator
safety increases when the welding machine is on but not in the welding mode.
Pressing knob C-5 again, the following appears:
- : this is the initial "HOT START" overcurrent, the display shows the percentage
increase as to the value of the selected welding current. Settings from 0 to 100%.
Factory value: 50 %
Pressing knob C-5 again, the following appears:
- : this is the dynamic "ARC-FORCE" overcurrent, the display shows the
percentage increase as to the value of the pre-selected welding current. This
adjustment improves welding fluidity, prevents the electrode from adhering to the
workpiece and makes it possible to use different types of electrodes.
Settings from 0 to 100%. Factory value: 50 %
Pressing knob C-5 again, you return to MMA mode.
13.4 Insertion of remote command (on request)
On insertion of the remote command in the specific connector (Fig. B-13) the icon
switches on . Adjustment can exclusively be from the remote command and
precisely:
a) Command with one potentiometer: allows adjustment of welding current;
b) Command with two potentiometers: allows adjustment of the welding current,
while the second potentiometer is disabled.
14. TIG DC WELDING: PROCESS DESCRIPTION
14.1 GENERAL PRINCIPLES
TIG DC welding is suitable for all types of low-alloy and high carbon steel, and heavy
metals such as copper, nickel, titanium and their alloys (FIG. M). An electrode with 2 %
Cerium (grey band) is normally used for TIG DC welding with electrode at the (-) pole.
The tungsten electrode must be axially sharpened using a grinding wheel, see FIG. N;
make sure the tip is perfectly concentric to prevent arc deviation. The electrode must
be ground along its length. This operation must be repeated periodically according
to the use and wear state of the electrode, or when the electrode itself has been
accidentally contaminated, oxidised or used incorrectly. The welding to be good, the
exact diameter of the electrode must be used with the exact current, see table (TAB.
5). The electrode normally projects from the ceramic nozzle by 2 - 3mm, but can reach
8 mm for welding edges.
The weld is created by the edges that melt. Filler metal is not needed when welding
suitably prepared thin material (up to about 1 mm) (FIG. O).
A greater thickness requires rods made from the same material as the basic material
and with a suitable diameter, with edges that have been suitably prepared (FIG. P).
For welding to be successful, the pieces must be carefully cleaned and free from
oxide, grease, oil, solvent, etc.
14.2 PROCEDURE (LIFT STRIKE)
- Use the knob C-5 to adjust the welding current to the required rate; adjust this value
during welding processes to adapt to the actual heat transfer required.
- Make sure the gas is flowing correctly.
The arc ignites through contact, distancing the tungsten electrode from the
workpiece. Igniting in this manner causes less electric-irradiated disturbances and
reduces tungsten inclusions and electrode wear to a minimum.
- Place the tip of the electrode on the workpiece, pressing gently.
- Immediately lift the electrode by 2 - 3mm to obtain the ark strike.
The welding machine initially supplies reduced current. After a few seconds, the set
welding current is issued.
- 9 -
Welding current (A)
Min. Max.
30 50
40 80
60 110
90 140
120 180
170 250
230 350
320 500