Idiomas disponibles
Idiomas disponibles
size of the piece being welded make it impossible to provide integrated
protection against the danger of the upper limbs being crushed: fingers,
hands, forearm.
The risk should be reduced by appropriate preventive measures:
- The operator should either be expert or trained in resistance welding
procedures using this type of appliance.
- There should be risk evaluation for every type of job to be done; equipment
and masking should be provided to support and guide the work-piece
(unless a portable spot-welder is used).
- Whenever the shape of the piece allows it, adjust the electrode distance so
that the stroke does not exceed 6 mm.
- Do not allow more than one person to work on the same spot-welder at the
same time.
- Unauthorised persons should not be allowed in the working area.
- Do not leave the spot-welder unattended: in such a case it should be
disconnected from the power supply; for pneumatic cylinder-operated spot
welders turn the main switch to "O" and lock it with the supplied padlock,
take out the key and leave it with the person in charge.
-
RISK OF BURNS
Some parts of the spot-welder (electrodes arms and nearby areas) may reach
temperatures of over 65°C: suitable protective clothing must be worn.
-
RISK OF TIPPING AND FALLING
- Place the spot-welder on a level horizontal surface that is able to support its
weight; confine the spot-welder to the support surface (when required in the
"INSTALLATION" section of this manual). Otherwise with inclined or uneven
floors or moveable supporting surfaces there is the danger of tipping.
- Never lift the spot-welder unless explicitly required by the "INSTALLATION"
section of this handbook.
-
IMPROPER USE
It is dangerous to use the spot-welder for any other purpose than that for
which it is designed (spot resistance welding).
The safeguards and moveable parts of the spot-welder casing should all be in
position before connection to the power supply.
WARNING: All manual operations on moveable accessible parts of the spot
welder, for example:
- Electrode replacement or maintenance
- Adjusting the position of the arms or electrodes
SHOULD BE CARRIED OUT WITH THE SPOT-WELDER SWITCHED OFF AND
DISCONNECTED FROM THE POWER SUPPLY (MAIN SWITCH LOCKED TO "O"
USING PADLOCK WITH KEY TAKEN OUT for PNEUMATIC CYLINDER-operated
models).
2 INTRODUCTION AND GENERAL DESCRIPTION
2.1 INTRODUCTION
Movable system for microprocessor-controlled resistance welding (spot-welder),
medium frequency inverter technology, 3-phase power supply and direct current
output.
The spot-welder is supplied with a clamp with dual-effect cylinder, water-cooled
cables and incorporated cooling system. It is also fitted with quick connectors for use
with accessory equipment, it can be used for numerous hot-working jobs, spot-
welding jobs on sheet metal and all working specific to the vehicle bodyshop.
Its main features are:
- automatic selection of welding parameters according to the material,
- automatic recognition of the inserted tool,
- customisation of welding parameters,
- measurement and adjustment of the force exerted on the electrodes,
- display of welding parameters,
- display of spot-welding current,
- pneumatic, forced air internal cooling with controlled introduction.
2.2 STANDARD ACCESSORIES:
- Eyebolts for lifting the pneumatic clamp.
- Eyebolts for lifting the machine.
- Clamp supports.
- Support pole, balancer and cable-holder strap.
- Filter and reduction unit (compressed air supply).
- Pneumatic clamp complete with (all water-cooled) cables.
- Cooling system (GRA).
2.3 OPTIONAL ACCESSORIES
- Arm pairs of different lengths and/or shapes for water-cooled pneumatic clamp (see
spare parts list).
- Electrodes of different shapes for water-cooled pneumatic clamp (see spare parts
list).
- Manually operated clamp with cable pair.
- Arm pairs and electrodes of different lengths and/or shapes for manual clamp (see
spare parts list).
- Manually operated
- Complete studder kit with separate earth cable and accessory box.
- Clamp for twin-spot welding with cables.
3. TECHNICAL DATA
3.1 RATING PLATE (FIG.A)
The main data regarding use and performance of the spot-welder are summarised
on the rating plate and have the following meanings.
1 - Number of phases and frequency of power supply.
2 - Power supply voltage.
3 - Mains power with permanent running (100%).
4 - Rated mains power with 50% duty cycle.
5 - Maximum loadless voltage over electrodes.
6 - Maximum current when electrodes are shorted.
7 - Current to secondary when running permanently (100%).
8 - Gauge and length of arms (standard).
9 - Minimum and maximum adjustable electrode force.
10 - Rated pressure of compressed air supply.
11 - Pressure of compressed air supply needed to obtain maximum electrode force.
12 - Cooling water flow rate.
13 - Rated pressure drop for coolant liquid.
14 - Weight of welding device.
15 - Safety symbols, the meaning of which is given in chapter 1 "General safety rules
for resistance welding".
Note: The rating plate shown is an example to show the meaning of the symbols and
numbers; the exact values of the technical properties of your spot-welder can be found
on the rating plate of the spot-welder itself.
3.2 OTHER TECHNICAL DATA
3.2.1 Spot-welding machine
General specifications
- Power supply voltage and frequency
- Electrical protection class
- Insulation class
- Enclosure protection rating
- Type of cooling
- (*)Overall Dimensions (LxWxH)
- (**)Weight
Input
- Max. power in short circuit (Scc)
- Power factor at Scc (cosφ)
- Main supply delayed fuses
- Automatic circuit-breaker
- Power supply cable (L=≤4m)
Output
- Loadless secondary voltage (U d)
- Max. spot-welding current (I max)
2
- Welding capacity
- Duty cycle
- Spots/hour on 3+3mm steel
- Maximum electrode force
- Arm projectio
- Spot-welding current adjustment
- Spot-welding time adjustment
- Squeeze time adjustment
- Ramp time adjustment
- Holding time adjustment
- Cooling time
- Pulse number adjustment
- Minimum cooling water flow rate (30°C) Q :
(*)NOTE: The overall dimensions do not include the cables and the support pole.
(**)NOTE: The weight includes the wheels, cooling system, cables, clamp and cable
support.
3.2.2. Cooling system (GRA)
- Maximum pressure (pmax)
- Cooling power (P 1 l/min)
- Tank capacity
- Type of coolant
4. DESCRIPTION OF THE SPOT-WELDER
4.1 SPOT-WELDER ASSEMBLY AND DIMENSIONS (FIG.B)
on the front:
1 - Main switch
2 - Pressure regulation unit and pressure gauge.
3 - "Start" button.
4 - Control panel.
5 - "Dinse" connector for accessory tools.
6 - 14-pin connector for recognising the tool being used.
7 - Pneumatic clamp support.
8 - Cooling system tank plug (GRA).
9 - Air valve for GRA.
10 - Water level in GRA.
11 - Yellow alarm indicator light for GRA (pressure switch triggered).
12 - Green light indicating GRA is powered.
on the back :
13 -
Air input filter
.
14 - Arm holder.
15 - Power supply cable input.
on the side:
16 - Balancer.
17 - Cable/clamp support pole.
18 - Anchorage for support pole.
4.2 CONTROL AND ADJUSTMENT DEVICES
4.2.1 Control panel (FIG. C)
Description of spot-welding parameters:
Power: percentage of supplyable power during spot-welding range from 0 to
100%.
Squeeze time: time for which the electrodes of the pneumatic clamp squeeze
the sheet to be spot-welded without delivering current; used to ensure that the
electrodes reach the maximum pressure setting before delivering current
range from 10 to 50 cycles (1 cycle = 20ms).
Ramp time: time taken for the current to reach the maximum set value. For
pulsed operation with the pneumatic clamp this time is only applied to the first
- 6 -
:
400V(380V-415V) ~ 3ph-50/60 Hz
:
:
:
:
:
90 x 60 x 110mm
:
:
:
:
:
32A ("C"- IEC60947-2)
:
:
2
:
:
:
:
:
:
120mm standard- 400mm max
:
automatic and programmable.
:
automatic and programmable.
:
automatic and programmable.
:
automatic and programmable.
:
automatic and programmable.
:
automatic and programmable.
:
automatic and programmable.
:
:
:
:
demineralised water
I
H
IP 22
F (forced air)
170kg
98kVA
0.8
32A
4 x 6mm²
14V
10kA
max 4 + 4mm
5.0%
360
450daN
3 l/min
3bar
2.5kW
10 l
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