Telwin 954056 Manuel D'instructions page 7

7.
It can be activated by connecting the Studder gun either with or without trigger
(contact activation version).
8a.
Indicates the spot welding of plugs, rivets, washers and special washers with
suitable electrodes.
8b.
Indicates the spot welding of screws having a diameter of 4-6 and rivets having a
diameter of 5 with suitable electrode.
8c.
Indicates individual spot welding with suitable electrode.
8d.
Indicates sheet tempering with the carbon electrode.
8e.
Indicates sheet upsetting with the relative electrode.
8f.
Indicates intermittent spot welding for sheet patching with relative electrode.
9.
Indicates the level of the welding time
.
10.
Indicates that impulse spot welding has been activated (only for pneumatic
clamps).
11.
Indicates that a "manual" clamp, not a "pneumatic" one, is being used.
12.
Indicates that the clamp being used is energised.
13-14-15.
indicate double tip clamp,
activated using the Studder gun.
16.
Is the thickness of the sheet to be welded.
17.
Indicates that the machine is being thermostatically protected.
18.
Indicates that the hot stapler is being used to weld plastic parts.
19.
Indicates the measurement unit of the metal sheet thickness .
4.2.2 Pressure regulator and gauge unit (fig. B-7)
Adjusts the pressure applied to the pneumatic clamp electrodes using the adjustment
knob and modifies the clamp cooling air flow where programmed. We recommend
setting the maximum pressure below 8 bar.
4.3 SAFETY FUNCTIONS AND INTERLOCK
4.3.1 Safeguards and alarms (TAB. 1)
a) Thermostatic safeguard:
Intervenes if the spot welding machine overheats because the cooling liquid is
missing or is insufficient, or due to a work cycle that exceeds the permitted limit.
The icon on the display (fig. C-17) switches on to signal intervention and with:
AL1 = machine thermal alarm.
AL2 = clamp, studder thermal alarm.
EFFECT: movement blocked, electrodes opened (cylinder at discharge); current
blocked (welding inhibited).
RESET: manual (use the "START" push-button when the permitted temperature
limits are reached - the [symbol] icon switches off).
b) Main switch:
- Position "O" = open and lockable (see chapter 1).
ATTENTION! When at position "O" the internal clamps L1+L2(N)
that connect the power cable are being powered.
- Position "I" = closed: stapler being powered but not operating (STAND BY - the
"START" push-button must be pressed).
- Emergency function
With the spot welding operating, the opening (pos. "I"=>pos "O") determines a
stop in safety conditions:
- current inhibited;
- electrodes open (cylinder at discharge);
- automatic restarting inhibited.
respect at the automatically set value
indicate "X" clamp, can be
ATTENTION! PERIODICALLY MAKE SURE THE SAFETY STOP
OPERATES CORRECTLY.
c) Over and under voltage protection
The intervention is signalled on the display by AL 3 = overvoltage alarm and by AL
4 = undervoltage alarm.
EFFECT: movement blocked, electrodes opened (cylinder at discharge); current
blocked (welding inhibited).
RESET: manual (use the "START" push-button).
d) "START" push-button (Fig. C-5).
This push-button must be pressed to control welding in each of the following
conditions:
- when the master switch is switched off (pos "O" => pos "I");
- each time the safety/protection devices cut in;
- after the power supply (electricity and compressed air) has been returned after
being disconnected upstream or after a failure;
ATTENTION! PERIODICALLY MAKE SURE SAFE STARTING
OPERATES CORRECTLY.
5. INSTALLATION
ATTENTION! CARRY OUT ALL INSTALLATION AND ELECTRICAL AND
PNEUMATIC CONNECTION OPERATIONS WITH THE SPOT WELDING MACHINE
RIGOROUSLY SWITCHED OFF AND DISCONNECTED FROM THE MAINS.
THE ELECTRICAL AND PNEUMATIC CONNECTIONS MUST ONLY BE CARRIED
OUT BY EXPERT OR QUALIFIED TECHNICIANS.
5.1 PRELIMINARY OPERATIONS
Unpack the spot-welder, assemble the separate parts included in the package.
5.2 LIFTING THE SPOT-WELDER
WARNING: None of the spot-welders described in this handbook have lifting devices.
5.3 POSITION
Reserve a space in the installation area that is large enough and without obstacles
for guaranteeing access to the control panel, the main switch and the work area in
complete safety.
Make sure there are no obstacles near the areas where the cooling air enters and exits,
ensuring that conductive power, corrosive vapour, humidity, etc. cannot be sucked in.
Place the spot welding machine on a surface of homogeneous material that is flat and
compact, and suitable for supporting the weight (see "technical data") to prevent the
danger of toppling or dangerous movements.
5.4 CONNECTION TO THE POWER NETWORK
5.4.1 Warnings
Before making any electrical connection, make sure the spot welding machine plate
data correspond with the mains voltage and frequency available in the installation
area.
The spot welding machine must only be connected to a power supply system with
neutral conductor connected to earth.
To guarantee protection against indirect contact, use residual-current devices of the
following type:
- Type A ( ) for single-phase machines;
- Type B ( ) for three-phase machines.
- The spot welding machine does not meet the requirements of the IEC/EN 61000-
3-12 directive.
If it is connected to a public power grid, the installer or user must make sure that
the welding machine can be connected (if necessary consult the utility company).
5.4.2 Network plug and outlet
Connect a normalised plug (3P + E: only 2 poles are used; INTERPHASE connection!)
of suitable capacity to the power supply plug and prepare a mains socket that is
protected by fuses or by a circuit breaker; the relative earth terminal must be connected
to the earth conductor (yellow-green) of the power line.
The capacity and intervention characteristic of the fuses and circuit breaker switch are
given in the "TECHNICAL DATA" paragraph.
Should several spot welding machines be installed, distribute the power supply
cyclically between the three phases so as to create a more balanced load, for example:
spot welding machine 1: L1-L2 power supply;
spot welding machine 2: L2-L3 power supply;
spot welding machine 3: L3-L1 power supply.
ATTENTION! Failure to comply with the above rules renders the safety
system (class I) ineffective, with resulting serious risks for people (e.g. electric
shock) and for property (e.g. fire).
5.5 PNEUMATIC CONNECTION
- 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
compatible with the connectors available where the spot-welder is installed.
5.6 PNEUMATIC CLAMP CONNECTION (Fig. D)
- Connect the DINSE outlets to the relative inlets.
ATTENTION! The "dinse" cable plugs connect with the sockets
of the panel with clockwise rotation: make sure the cable torsion does not
loosen the connection; if it does, rotate the "dinse" plugs in a counter-
clockwise direction before inserting them and locking them in the panel.
- Connect the two air plugs into the relative sockets of the spot welding machine:
small socket (cooling air); large socket (pneumatic gun controlling air).
- Insert the control cable connector into the relative 14-pin socket.
5.7 MANUAL CLAMP AND STUDDER GUN CONNECTION WITH EARTH CABLE
(FIG. E)
- Connect the DINSE plugs with the relative sockets; only for the studder: connect
the gun and the earth to the relative dinse, as shown in the machine screen printing.
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