Explanation Of Technical Specifications; Choice Of The Measurement Unit - Elettro 455 Manuel D'instructions

Always replace any damaged parts of the machine with

original materials.
 Do not run the machine without its housings. This would
be dangerous to the operator and anyone else in the
work area, and would prevent the machine from being
cooled properly.
Password block
If the password function is activated and the operator
does not enter the password code correctly, the machine will
lock, this icon will appear on the display and the access to
the menu to set the cutting parameters will be denied.
NOTE: also when the machine is locked, the torch may strike
but it is not able to cut.
Generic block
If this icon appears on the display, it means that one
of the phase is absent.

1.4. EXPLANATION OF TECHNICAL SPECIFICATIONS

IEC 60974-1 ....The equipment is built according to these
IEC 60974-10 standards.
IEC 60974-7
Cl. A ................Machine for professional and industrial use.
.Three-phase
frequency converter.
..................Down slope.
...............Suitable for plasma cutting.
TORCH TYPE .Type of torch that may be used with this
machine to form a safe system.
U0 ...................Secondary open-circuit voltage.
X .....................Duty cycle percentage.
The duty cycle expresses the percentage of
10 minutes during which the welding
machine may run at a certain current I
voltage U
I .....................Cutting current.
2
U ....................Secondary
2
welding current I
the distance between the contact tip and the
workpiece.
If this distance increases, the cutting voltage
also increases and the duty cycle X% may
decrease.
U ....................Rated supply voltage.
1
3~ 50/60Hz .....50- or 60-Hz three-phase power supply
I Max ..............Max. absorbed current at the corresponding
1
current I
2
I eff ................This is the maximum value of the actual
1
current absorbed, considering the duty
cycle. This value usually corresponds to the
capacity of the fuse (delayed type) to be
static transformer-rectifier
without overheating.
2
conventional voltage
. This voltage depends on
2
and voltage U
2.
IP23 ................ Protection rating for the housing. Grade 3 as
................ Suitable for use in high-risk environments.
NOTES: The machine has also been designed for use in
environments with a pollution rating of 3. (See IEC 664).
1.5. START-UP
The machine must be installed by qualified personnel. All
connections must be made in compliance with current safety
standards and full observance of safety regulations (see CEI
26-23 - IEC TS 62081).
Connect the air supply to the fitting S7 (pict. 1).
If the air supply comes from a pressure regulator of a
compressor or centralized system, the regulator must be set
to an output pressure of no more than 8 bar (0.8 Mpa). If the
air supply comes from a compressed air cylinder, the
cylinder must be equipped with a pressure regulator. Never
connect a compressed air cylinder directly to the
regulator on the machine! The pressure could exceed
the capacity of the regulator, which might explode!
Connect the power cord S9 (pict. 1): the yellow-green cable
wire must be connected to an efficient grounding socket on
the system. The remaining wires must be connected to the
power supply line by means of a switch placed as close as
possible to the cutting area, to allow it to be shut off quickly
in case of emergency.
The capacity of the cut-out switch or fuses installed in series
with the switch must be equal to the current I
by the machine.
The absorbed current I
the technical specifications shown on the machine under the
available supply voltage U
Any extension cords must be sized appropriately for the
absorbed current I
2. USE (see pict. 1)
Make sure the trigger has not been pressed.
Turn the machine on using the switch S8. The display will
light to indicate that the machine is on.
Set the pressure shown by the pressure gauge S6 at 5 bar
(0,5 MPa) by means of the reducer knob S5, and then lock
the knob by pushing it down. Connect the grounding clamp
to the workpiece.
The cutting circuit must not be deliberately placed in direct
or indirect contact with the protective wire except in the
workpiece.
If the workpiece is deliberately grounded using the protective
conductor, the connection must be as direct as possible and
and
2
use a wire of at least the same size as the cutting current
return wire, and connected to the workpiece at the same
point as the return wire using the return wire clamp or a
with
second grounding clamp placed in the immediate vicinity.
Every precaution must be taken to avoid stray currents.
Make sure that the grounding clamp and workpiece have a
good electrical contact, especially with painted, oxidized or
insulated sheet metal.
Do not connect the grounding clamp to the part of the
material that is to be removed.

2.1. CHOICE OF THE MEASUREMENT UNIT

To choose the measurement unit, select the icon "cutting
mode" (Pict. 4 Ref. A) and access the submenu, select the
desired measurement unit between millimetres
inches
11
used as a protection for the equipment.
the second digit
equipment is suitable for use outdoors in
the rain.
eff. may be determined by reading
1
.
1
max.
1
.
means that this
eff. absorbed
1
and