Telwin INVERPULSE 320 MIG-TIG-MMA [7/156] Installation
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Telwin INVERPULSE 320 MIG-TIG-MMA [7/156] Installation

Telwin INVERPULSE 320 MIG-TIG-MMA [7/156] Installation
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4.3 RECALLING AND STORING PROGRAMS
4.3.1 RECALLING MANUFACTURER’S PRE-STORED PROGRAMS
4.3.1.1 MIG-MAG SYNERGIC programs
The welding machine is designed with 44 stored synergic programs, as specied in
the table (TAB.3), which must be consulted when selecting a suitable program
for the type of welding to be carried out.
A particular program is selected by pressing the “PRG” program repeatedly and the
corresponding number, between “0” and “44” will be shown on the display (the number
“0” does not have a corresponding synergic program but is for operating in manual
mode, as described in the next paragraph).
Note: In a synergic program, it is essential to rst select the desired transfer
mode, PULSE ARC or SHORT/SPRAY ARC, using the appropriate key (see FIG.C
(7)).
Note: All types of wire that are not shown in the table can be used in manual
mode “PRG 0”.
4.3.1.2 OPERATION IN MANUAL MODE (“PRG 0”)
Operation in manual mode corresponds to the number “0” on the display and is only
active if the SHORT/SPRAY ARC transfer mode has been selected previously (see
FIG.C (7)).
In this mode, as there will be no synergy, the operator should set all welding parameters
manually.
Warning! The operator can set all the parameters freely therefore it is possible to set
values that are incompatible with a correct welding procedure.
Note: it is NOT possible to use PULSE ARC transfer mode when manual is
selected.
4.3.2 STORING AND RECALLING CUSTOMISED MIG-MAG PROGRAMS
4.3.2.1 Introduction
The welding machine can be used to (SAVE) customised work programs relating to
a set of valid parameters for a particular welding job. Each stored program can be
recalled (RECALL) at any time so that the user nds the welding machine “ready-to-
use” for a specic job that has been optimised previously.
4.3.2.2 Storage capacity for customised MIG-MAG programs
The welding machine allows storage of customised programs in three groups that refer
to the three synergic transfer modes (SHORT/SPRAY ARC Pulse arc and Pulse on
pulse) and to manual mode operation, with the following specications:
- SYNERGIC PULSE ARC PULSE ON PULSE: 10 programmes can be stored
(available numbers from ”1” to ”10”),
- SYNERGIC PULSE ARC: able to save 10 programs (available numbers from “1” to
“10”),
- SYNERGIC SHORT/SPRAY ARC: able to save 10 programs (available numbers
from “1” to “10”),
- MANUAL SHORT/SPRAY ARC (“PRG=0”): able to save 10 programs (available
numbers from “1” to “10”).
To actually recall the program to be used, before selecting the number (as
described in parag. 4.3.1), select the desired transfer mode: PULSE ARC,
PULSE ARC PULSE-ON- PULSE or SHORT/SPRAY ARC or select ”PRG=0” if
programmes have been pre-stored in manual mode.
4.3.2.3 Storage procedure (SAVE)
After adjusting the welding machine to carry out a particular weld perfectly, proceed
as follows (see FIG.C):
a) Press key (5) “SAVE”.
b) “Pr” will appear on display (16) and a number (between “1” and “10”) on display
(15).
c) Turn the encoder knob (either (13) or (14)) to select the number where the program
is to be stored (see also 4.3.2 ).
d) Press the “SAVE” key again.
e) Displays (15) and (16) will ash.
f) Within two seconds, press the “SAVE” key again.
g) The displays will show “St Pr”, indicating that the program has been stored;
after 2 seconds the displays will automatically switch to the values relating to the
parameters that have just been saved.
Note. If the “SAVE” key is not pressed again within 2 seconds while the displays are
ashing, they will show “No St” and the program will not be stored; the displays
automatically return to what they were showing initially.
4.3.2.4 Procedure for recalling a customised program (RECALL)
Before proceeding to recall a program, make sure the selected transfer mode (PULSE
ARC, PULSE ARC PULSE-ON-PULSE, SHORT/SPRY ARC or ”PRG=0”) is actually
the one you intend to use.
Then proceed as follows (see FIG.C):
a) Press the “RECALL” key.
b) “Pr” appears on display (16) and a number (between “1” and “10”) on display
(15).
c) Turn the encoder knob (either (13) or (14)) to select the number used to save the
program that is to be used.
d) Press the “RECALL” key again for more than 2 seconds.
e) The displays will show “Ld Pr” indicating that the program has been loaded; after 2
seconds the displays will automatically switch to the values relating to the program
that has just been recalled.
Note. If the “RECALL” key is not pressed again for longer than 2 seconds, the
displays will show “No Ld” and the program will not be loaded; the displays
automatically return to what they were showing initially.
NOTES:
- DURING OPERATIONS WITH THE “SAVE” AND “RECALL” KEYS THE “PRG”
LED IS ON.
- A RECALLED PROGRAM CAN BE MODIFIED AS THE OPERATOR WISHES,
BUT THE MODIFIED VALUES ARE NOT AUTOMATICALLY SAVED. TO SAVE
THE NEW VALUES IN THE SAME PROGRAM IT IS NECESSARY TO FOLLOW
THE STORAGE PROCEDURE (see 4.3.2.3).
- THE USER IS RESPONSIBLE FOR RECORDING CUSTOMISED PROGRAMS
AND THE RELATED MANAGING OF THE ASSOCIATED PARAMETERS.
- CUSTOMISED PROGRAMS CANNOT BE SAVED IN TIG OR MMA ELECTRODE
MODE.
5. INSTALLATION
WARNING! CARRY OUT ALL INSTALLATION OPERATIONS AND
ELECTRICAL CONNECTIONS WITH THE WELDING MACHINE
COMPLETELY SWITCHED OFF AND DISCONNECTED FROM THE POWER
SUPPLY OUTLET.
THE ELECTRICAL CONNECTIONS MUST BE MADE ONLY AND EXCLUSIVELY
BY AUTHORISED OR QUALIFIED PERSONNEL.
5.1 PREPARATION
- Unpack the welding machine;
- Insert the polarisation connector if the GRA is not connected (FIG. D);
- If there is a Trolley and/or GRA, consult their respective instruction handbooks.
5.2 HOW TO LIFT THE WELDING MACHINE (FIG. E)
The welding machine should be lifted without its removable parts (torch, gas pipes,
cables etc.), which could come off in transit.
As shown in the illustration, assemble the attachment rings using the two M8x25
screws provided.
Please note: eyelet rings for lifting, with threaded hole M8 UNI 2948-71, are not
supplied.
5.3 POSITION OF THE WELDING MACHINE
Choose the place to install the welding machine so that the cooling air inlets and
outlets are not obstructed (forced circulation by fan, if present); at the same time make
sure that conductive dusts, corrosive vapours, humidity etc. will not be sucked into
the machine.
Leave at least 250mm free space around the welding machine.
WARNING! Position the welding machine on a at surface with
sufcient carrying capacity for its weight, to prevent it from tipping
or moving hazardously.
5.4 CONNECTION TO THE MAIN POWER SUPPLY
5.4.1 Note
Before making any electrical connection, make sure the rating data of the welding
machine correspond to the mains voltage and frequency available at the place of
installation.
The welding machine should only be connected to a power supply system with the
neutral conductor connected to earth.
To ensure protection against indirect contact use residual current devices of the
following types:
- Type A (
) for single phase machines;
- Type B (
) for 3-phase machines.
To comply with the requirements of the EN 61000-3-11 (Flicker) standard we
recommend connecting the welding machine to interface points of the power supply
that have an impedance of less than Zmax = 0.283 ohm.
5.4.2 Plug and outlet
Connect a normalised plug (3P + T) having sufcient capacity to the power cable and
prepare a mains outlet tted with fuses or an automatic circuit-breaker; the special
earth terminal should be connected to the earth conductor (yellow-green) of the power
supply line. The table (TAB.1) shows the recommended delayed fuse sizes in amps,
chosen according to the max. nominal current supplied by the welding machine, and
the nominal voltage of the main power supply.
5.5 CONNECTION OF THE WELDING CABLES
WARNING! BEFORE MAKING THE FOLLOWING CONNECTIONS
MAKE SURE THE WELDING MACHINE IS SWITCHED OFF AND
DISCONNECTED FROM THE POWER SUPPLY OUTLET.
Table (TAB. 1) gives the recommended values for the welding cables (in
mm
2
) .
5.5.1 MIG-MAG WIRE WELDING (FIG.F)
5.5.1.1 Connecting the gas bottle
- Screw the pressure reducing valve onto the gas bottle, inserting the appropriate
adapter supplied as an accessory when Argon or an Ar/CO
2
mixture is used.
- Connect the gas inlet hose to the pressure reducing valve and tighten the supplied
clip; then connect the other end of the hose to the connector provided on the back
of the welding machine and tighten it with the supplied clip.
- Loosen the adjustment ring nut on the pressure reducing valve before opening the
gas bottle valve.
5.5.1.2 Connecting the torch
- Engage the torch with its dedicated connector by tightening the locking ring nut
manually as far down as it will go.
- Prepare the wire for loading the rst time, by dismantling the nozzle and the contact
tip, to ease its exit.
- Welding power supply cable to the quick connector (+).
- Control cable to the corresponding connector.
- Water pipes for R.A. versions (water-cooled torch) with quick connectors.
- Make sure that the connectors are tightened properly so as to prevent overheating
and reduced efciency.
- Connect the gas inlet hose to the pressure reducing valve and tighten the supplied
clip; then connect the other end of the hose to the connector provided on the back
of the welding machine and tighten it with the supplied clip.
5.5.1.3 Connecting the welding current return cable
- This is connected to the piece being welded or to the metal bench supporting it, as
close as possible to the join being made.
- This cable is connected to the terminal with the symbol (-).
5.5.2 TIG WELDING (FIG. G)
5.5.2.1 Connection to the gas bottle
- Screw the pressure reducing valve onto the gas bottle valve, inserting the appropriate
adapter supplied as an accessory, for when the gas used is Argon or an
Argon /CO
2
mixture.
- Connect the gas inlet pipe to the pressure-reducing valve and tighten the band
supplied; then connect the other end of the pipe to the connector on the back of the
welding machine and tighten it using the band supplied.
- Loosen the adjustment ring nut on the pressure-reducing valve before opening the
bottle valve.

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