Telwin Inverspotter 13000 400V [8/144] Spot welding
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Telwin Inverspotter 13000 400V [8/144] Spot welding

Telwin Inverspotter 13000 400V [8/144] Spot welding
5.3 POSITION
- Spot-welding current.
The installation area must be sufficiently large and without obstacles, suitable for
- Spot-welding time.
ensuring completely safe access to the control panel, to the main switch and to the
When specific experience is lacking we recommend carrying out a number of test welds
working area.
using sheet of the same thickness and quality as that of the workpiece.
Ensure that there are no obstacles near the cooling air inlets and outlets and that no
conductive dusts, corrosive vapour, moisture etc. can be sucked in.
6.2.1 Adjusting the force and squeeze function (pneumatic clamp only)
Position the spot-welder on a plane surface made of uniform, compact material able to
The force is regulated by adjusting the air group pressure regulator (see section 4.1.2).
support the weight (see the “technical data”) so as to prevent it from tipping or moving
The squeeze function can be selected in two ways:
dangerously.
a) At the panel:
keep key “B” as in Fig.B pressed for about 3 seconds. The display shows “ACCo” and
the LED in the clamp flashes. In this function there is no current output! Press key “B”
5.4 CONNECTION TO THE MAIN POWER SUPPLY
5.4.1 Warnings
again for about 3 seconds to exit the function.
Before making any electrical connection, make sure the rating data of the spot-welder
correspond to the mains voltage and frequency available at the place of installation.
b) Using the clamp:
The spot-welder should be connected only and exclusively to a power supply with the
press and release the button on the clamp and then immediately hold the button
neutral conductor connected to earth.
pressed down. The clamp will squeeze and keep the electrodes closed until the next
In order to guarantee protection against indirect contact use RCD's of the following types:
time the button is released. The display shows “ACCo” and the LED in the clamp
flashes. In this function there is no current output!
- Type A ( ) for single phase machines;
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- Type B ( ) for 3-phase machines.
WARNING: when using safety gloves it may be difficult to select the squeeze
The spot welder does not fall within the requisites of IEC/EN 61000-3-12 standard.
function using the clamp. We therefore recommend selecting the squeeze function
Should it be connected to a public mains system, it is the installer's responsibility to verify
on the panel.
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that the spot welding machine itself is suitable for connecting to it (if necessary, consult
the distribution network company).
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WARNING!
5.4.2 Plug and socket
Connect the power supply cable to a standardised plug (3P + G) of adequate capacity
RESIDUAL RISKS! Also in this operating mode there is a risk of crushing the upper
and prepare a power outlet protected by fuses or by an automatic circuit-breaker; the
limbs: take all necessary precautions (see the chapter on safety).
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appropriate earth terminal should be connected to the (yellow-green) earth conductor of
the power line.
6.2.2. Adjusting the spot-welding current and times (Fig. B)
The capacity and specifications of the fuses and circuit-breaker are given in the
The spot-welding parameters are described in section 4.1.1
paragraph on “OTHER TECHNICAL DATA”.
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Spot-welding current and time are set automatically by selecting the thickness of the
sheet to be welded with key D as in Fig. B and selecting the material.
WARNING! Failure to observe the rules given above will invalidate the (class I)
IMPORTANT:
safety system provided by the manufacturer causing serious risks to people (e.g.
If the LED corresponding to the selected thickness “flashes” this means that the
electric shock) and objects (e.g. fire).
default welding current, or the initially programmed current, is insufficient to
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achieve a satisfactory weld;
The spot-welding operation is deemed correct when a tensile test causes the spot-
5.5 PNEUMATIC CONNECTION
welding core to come out of one of the two sheets.
- Set up a compressed air line with working pressure between 6 and 8 bar.
- Fit one of the compressed air connectors to the filter-reducing valve unit to make it
6.2.3 Storage of the customized spot welding programmes (Fig. B)
compatible with the connectors available where the spot-welder is installed.
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It is possible to store three customized spot welding programmes, indicated on the
display by “Su_1” “Su_2” “Su_3” accordingly, for each material, thickness and tool, by
The clamp performances depend on the quality of the compressed air source
the procedure “SAVE”:
a) Choose the tool you intend to use.
to which the machine is connected; the quality of the point is granted by a pressure
b) Keep key A as in Fig. B pressed for approx. 3 seconds; the display will flash and the
operation not less than 6 bar.
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"PRG" LED will light up.
c) Use key A to select the parameter to be modified and select the desired value by
5.6 PNEUMATIC CLAMP CONNECTION (Fig. D1)
turning the encoder knob.
Insert the pole-plug of the clamp into the proper socket of the spot welder, then lift the two
d) Repeat the operation for all the parameters that are to be modified as in Fig. B1.
levels until you reach the complete fixing of the plug.
e) Press the “SAVE” button and select personal programme “St_1,2,3”.
If the Studder kit is not used (Optional), connect the relative 14 pin plug (Fig. D2).
f) Keep the "SAVE" key pressed down for about 3 seconds in order to SAVE the
NOTE: if the clamp plug is not connected, it is free to rotate twisting the corrugated hose;
parameter values in the chosen personal programme (make sure the display shows
pls avoid any excessive plug rotations in order not to compromise the internal cables
“Yes” before you release the key).
connections.
g) The machine is now ready to spot-weld.
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NOTA: during programming the spot-welder is unable to supply current output.
ATTENTION ! Dangerous voltage! Pls absolutely avoid to connect different
6.2.4 Recall of spot welding programmes (Fig. B)
plugs than recommended by the manufacturer to the spot-welder sockets. Pls
It is possible to recall the factory programme (“rE_d”) or the customized programmes
don't try to insert any object into the sockets!
(“rE_1”, “rE_2”, “rE_3”) relative to a certain tool, thickness and material by the
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procedure “RECALL”:
h) Enter the programming system as specified at issue b) of this paragraph.
5.7 STUDDER GENERATOR CONNECTION
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i) Press and release the "RECALL" button.
l) Turn the encoder and select “rE_d” (default program) or “rE_1”, “rE_2”, “rE_3”
This studder gun supply unit must be used only with its power sources
(personal program).
m)Keep the "RECALL" button pressed for about 3 seconds to recall the selected program
adequate for the use.
(you will have to read "Yes" on the display before releasing the button).
Installation must be performed only by personnel authorized to working on
electrical equipments.
n) The machine is now ready to spot-weld.
- It must not be connected to the mains.
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NOTE: to exit programming mode without storing the parameter settings press the “A” key
- Connect the two pole plugs of the studder generator to the proper socket of the spot
for about 3 seconds.
welder and fix them as explained in Fig. E .
6.3 SETTINGS FOR THE MATERIAL (Fig. B)
5.8 STUDDER GUN CONNECTION TO THE EARTH CABLE (Fig. F)
- Press the “MATERIAL” button to display the available materials.
- Connect the DINSE plugs to the propter sockets.
The available materials are:
- Insert the connector of the control cable into the propter socket.
FE = low content iron sheet;
- The connection of the compressed air is not necessary.
StSt = "stainless" steel sheet;
FE Zn = low carbon content iron sheet treated with surface galvanisation.
HSS = high yield point iron sheet.
6. (Spot) WELDING
- Use the encoder to select the material to be spot-welded from the materials available in
6.1 PRELIMINARY OPERATIONS
the list.
Main switch in the “O” position with the padlock closed!
- Press the “MATERIAL” key for about 3 seconds: “RECALL” and “YES” will appear; the
Before carrying out any spot-welding operation it is necessary to make a series of checks
material has been selected.
and adjustments, which should be carried out with the main switch in the “O” position and
with the padlock closed.
6.4 SPOT-WELDING PROCEDURE
Connections to the electricity and pneumatic supplies:
Operations that are valid for all tools:
- Ensure that the electrical connections are correct, in accordance with the instructions
- Selecting the material to be welded (see 6.3).
above.
- Selecting the material thickness (key D as in Fig.B).
- Check the compressed air hookup; connect the compressed air feed pipe to the
- Displaying the preset spot-welding parameters (key A in Fig.B).
pneumatic plant, use the reduction valve knob to adjust the pressure until the gauge
- If desired, customising the spot-welding programme (see section 6.2.2).
gives a reading close to 8 bar (116 psi).
Adjusting the clamp:
6.4.1 PNEUMATIC CLAMP
Between the electrodes, slide a shim equivalent to the thickness of the sheets; ensure
- Select the continuous or pulsed spot-welding function (see section 4.1.1 for a
that the arms, brought together manually, are parallel and that the electrodes are centred
description of key "B").
(tips meet).
- Place the fixed arm electrode on the surface of one of the two sheets to be spot-welded.
Always bear in mind that the stroke should be 5-6 mm greater than the spot-welding
- Press the button on the handgrip of the clamp so that:
position so as to exert the required force on the piece.
a) The sheets close between the electrodes.
If necessary loosen the arm locking screws to adjust the arms by turning them or moving
them in either direction along their axis; on completion secure the locking screws or nuts
tightly.
b) The spot-welding cycle starts with current passage indicated by the LED ( )
on the control panel.
6.2 ADJUSTING THE (spot-welding) PARAMETERS
Main switch in the “I” position.
- Release the button a few moments after the LED ( ) has gone off.
The parameters that affect the diameter (section) and mechanical strength of the spot
- At the end of the spot-weld the average welding current will be displayed (excluding the
weld are:
initial and final ramps). The current value may alternate with “warning” messages as (
- Force exerted by the electrodes.
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