- 6 -
An expert coordinator must use measuring instruments to
Fig. B
determine whether a risk exists and should take suitable
1-
Engine.
protective measures as indicated in section 5.9 of the "IEC
2-
High frequency alternator.
TECHNICAL SPECIFICATION or CLC/TS 62081".
3-
Rectifier.
4-
Direct current auxiliary power outlet.
5-
Input for 3-phase generator, rectifier unit and levelling capacitors.
RESIDUAL RISKS
6-
Transistor switching bridge (IGBT's) and drivers; commutes the
rectified voltage into high frequency alternating voltage and
- IMPROPER USE: it is dangerous to use the engine-driven
adjusts the power according to the required welding
welder for any work other than that for which it is intended (e.g.
current/voltage.
defrosting frozen water pipes).
7-
High frequency transformer: the primary winding is powered with
the voltage converted by block 6; its function is to adapt the voltage
2. INTRODUCTION AND GENERAL DESCRIPTION
and current to the values needed for the arc welding procedure and
This engine-driven welder is a power source for arc welding, built
at the same time to form galvanic isolation of the welding circuit
specifically for direct current (DC) MMA welding.
from the power supply line
The properties of this (INVERTER) adjustment system, such as high-
8-
Secondary rectifier bridge with levelling inductance: commutes the
speed precise adjustment, mean that the engine-driven welder
alternating voltage/current supplied by the secondary winding to
produces excellent quality welds with coated electrodes (rutile, acid,
very low ripple direct voltage/current.
basic, cellulose).
9-
Control and adjustment electronics: for instantaneous monitoring
The machine also has an auxiliary outlet
for a direct current power
of transitory welding current values and comparison with setting
supply to tools with universal motors (brushes)
such as angle
made by the operator; modulates the control impulses from the
grinders and drills.
IGBT drivers used for adjustments.
Determines the dynamic response of the current while the
OPTIONAL ACCESSORIES:
electrode is melting (instantaneous short circuits) and supervises
- MMA welding kit.
the safety systems.
- TIG welding kit.
- Argon bottle adapter.
CONTROL AND ADJUSTMENT DEVICES AND CONNECTION TO
- Pressure reduction valve.
THE ENGINE-DRIVEN WELDER
- TIG torch.
- Wheels kit.
Fig. C (model with I max = 130A)
2
- AC power supply kit (only model with I max = 160A, I max = 200A).
2
2
1-
Auxiliary power outlet 230V DC (direct current).
2-
Auxiliary outlet fuse.
3. TECHNICAL DATA
3- RED LED:
normally off, when on indicates overheating in the
RATING PLATE
alternator which shuts down both the welding current and the
The most important information regarding use and performance of the
auxiliary current. The machine remains switched on but does not
engine-driven welder are summarised on the rating plate and have the
supply any current until a normal temperature is reached. Reset is
following meanings:
automatic.
Fig. A
4- GREEN LED:
when lit this indicates operation in direct current
1
- Symbol S: means that it is possible to carry out welding operations
generator mode.
in environments with a heightened risk of electric shock (e.g. close
5- DIRECT CURRENT GENERATOR - WELDING MACHINE
to large metal objects).
selector.
Used to select the desired operating mode:
2
- Symbol for intended welding procedure.
3
- Symbol indicating the internal structure of the welding machine.
Direct current generator.
4
- Serial number identifying the welding machine (essential for
servicing and repairs, when ordering spare parts and identifying
the origin of the product).
Welding machine.
5
- EUROPEAN standard of reference for the construction and safety
6-
Welding current adjustment potentiometer with graduated scale in
of arc welding machines.
Amps.; used for adjustment, also while welding.
6
- Performance of welding circuit:
7- GREEN LED:
when lit indicates operation in welding machine
- U : maximum no-load voltage.
0
mode.
- I /U : Normalised current and corresponding voltage that may be
2
2
8 - YELLOW LED:
normally off, when on it indicates a fault that has
supplied by the welding machine during welding.
shut down the welding current due to triggering of the following
- X : Duty cycle: indicates the time for which the welding machine is
safeguards:
able to supply the corresponding current (same column). It is
- Thermal relay :
the temperature inside the engine-driven welder
expressed as %, based on a cycle of 10 minutes (e.g. 60% = 6
is too high. The machine stays on but does not supply any
minutes work, 4 minutes pause; and so on).
current until a normal temperature is reached. Reset is
If the utilisation factors (referred to a surrounding temperature of
automatic.
40°C) are exceeded, the thermal relay will trigger (the engine-
- ANTI STICK safeguard:
automatically shuts down the welding
driven welder will go into standby mode until the temperature
current if the electrode sticks to the material being welded, so
returns within the accepted limits).
that it can be removed manually without ruining the electrode-
- A/V-A/V: Indicates the adjustment range of the welding current
holder clamp.
(minimum-maximum) for the corresponding arc voltage.
- Engine overspeed safeguard:
shuts down the welding current
7
- Protection rating of case.
supply until the engine speed returns to the rated values.
8
- Symbol for engine.
9-
Positive quick connection (+) for connecting the welding cable.
9
- Specifications for engine:
10-
Negative quick connection (-) for connecting the welding cable.
- n: Rated load speed.
11-
Terminal for earth connection.
- n : Rated idling speed.
0
- P
: Maximum power of engine
1max
Fig. D (model with I max = 160A, I max = 200A)
2
2
10
-Auxiliary power outlet:
1-
Auxiliary power outlet 230V DC (direct current).
- Symbol for direct current.
2-
Auxiliary outlet fuse.
- Rated output voltage.
3- GREEN LED:
when lit this indicates operation in direct current
- Rated output current.
generator mode.
- Duty cycle.
4- GREEN LED:
when lit this indicates operation in alternating
11
-Size of delayed action fuse to be used to protect the auxiliary
current (AC) generator mode. The AC power supply kit is supplied
outlet.
as an optional accessory.
12
-Symbols referring to safety standards, the meanings of which are
5- GREEN LED:
when lit indicates operation in welding machine
given in section 1 "General safety rules".
mode.
13
-Guaranteed sound power level for the engine-driven welder.
6- Selector switch for DIRECT CURRENT GENERATOR AC
GENERATOR WELDING MACHINE.
Used to select the desired
Note: The rating plate shown is just an example to show the meanings
operating mode:
of the symbols and figures; the exact technical specifications for your
welding machine should be read directly from the rating plate on the
Direct current generator;
engine-driven welder itself
OTHER TECHNICAL DATA:
Alternating current generator;
- ENGINE-DRIVEN WELDER: see table 1 (TAB.1)
- ELECTRODE-HOLDER CLAMP: see table 2 (TAB.2)
Welding machine.
- AC POWER SUPPLY KIT: see table 3 (TAB.3).
7- RED LED:
normally off, when on indicates overheating in the
The weight of the engine-driven welder is shown in table 1
alternator which shuts down both the welding current and the
(TAB.1)
auxiliary current. The machine remains switched on but does not
supply any current until a normal temperature is reached. Reset is
4. DESCRIPTION OF THE ENGINE-DRIVEN WELDER
automatic.
The engine-driven welder consists of an engine that drives a
8-
Welding current adjustment potentiometer with graduated scale in
permanent magnet high frequency alternator which is used to supply
Amps.; used for adjustment, also while welding.
power to a power module from which the welding current and auxiliary
9 - YELLOW LED:
normally off, when on it indicates a fault that has
current are taken.
shut down the welding current due to triggering of the following
