Idiomas disponibles
Idiomas disponibles
The contents of this chapter are of vital importance and
therefore necessary for operation of the warranties. The
manufacturer accepts no liability if the operator fails to
observe the above precautions and instructions.
4.0 MACHINE DESCRIPTION
The G 240 TLH power sources offer excellent performance in
the following welding procedures:
- MMA;
- TIG with remote arc striking with high frequency (TIG HF-
START) and gas delivery control via torch button;
- TIG with contact start with reduction of short circuit current
(TIG LIFT-START) and gas delivery control via torch button.
In inverter welders the output current is insensitive to variations
in the power supply voltage and length of the arc and is per-
fectly levelled, providing best weld quality.
The power source features the following devices:
- a positive socket (+), a negative socket (-) and a central soc-
ket for connection of the TIG torch
- a front control panel with socket for remote controls
- RC16 potentiometer remote control for MMA and TIG wel-
ding
- RC12 pedal remote control for TIG welding
- a rear control panel with gas socket.
The Genesis 240 TLH can be supplied with WU15 cooling unit
for liquid cooling of the TIG torch.
4.1 Front control panel (Fig. 1)
*
L1: Power on: green led
Comes on when the ignition switch on the rear panel (Fig. 2)
"I1" is in position "I". Indicates that the system is on and
powered.
*
L2: Protection device: yellow led
Indicates cut-in of the thermal protection device or protection
due to incorrect power supply voltage. With L2 on, an alarm
code blinks on D1 (nº. 10). The power source remains con-
nected to the mains but does not deliver power at the output.
If an overtemperature has occurred, L2 remains on until the
internal temperatures have returned to normal; in this case,
leave the power source on and wait for the welder to cool. In
the event of alarms connected to the mains voltage, press any
button to resume operations.
*
L3: Voltage output (work): red led
Indicates presence of voltage at the output.
* Display D1
Displays the welding current or value of the welding parame-
ter chosen via S5 on the graph G1. It is used to show alarm
and error messages and to enter the set-up parameters.
16
* E1: Encoder for entering the welding current, welding
parameters and set-up values
Allows you to change the value shown in D1 of the parame-
ter selected via S5 in graph G1 (also during welding).
Allows you to enter the required set-up line and vary the
value.
Allows you to continuously adjust the welding current both in
TIG and MMA. (This current remains unchanged during wel-
ding when the power supply and welding conditions vary
within the ranges declared in the technical specifications).
In MMA the presence of HOT-START and ARC-FORCE means
that the mean output current can be higher than the one set.
*
S1: Current regulation system key
Selects the welding current regulation system:
- from front panel in "internal" mode
- from remote control in "external" mode
In this case via E1 it is possible to enter the maximum current
value that can be selected via the remote control.
*
I1: 7-pole military standard connector
For connection of the remote controls RC16 and RC12.
*
S2: Key for selecting type of TIG welding current
- CONSTANT current with or without SLOPES.
- PULSED current with or without SLOPES.
- MEDIUM FREQUENCY current with or without SLOPES.
Switch-on of the led at the side of the symbol confirms the
selection.
*
S3: Key for selecting control mode in TIG
- 2-stroke welding (2T)
- 4-stroke welding (4T)
- 2-level welding (BILEVEL)
Switch-on of the led at the side of the symbol confirms the
selection.
With the RC12 pedal control, only the 2T mode is possible.
In 2-stroke, when the button is pressed the gas flows and the
arc is struck; when the button is released, the current goes to
zero in the slope-down time; once the arc is off, the gas flows
for the post-gas time.
In 4-stroke, the first time the button is pressed the gas flows
for the manual pre-gas time; when the button is released, the
arc is struck. If the button is pressed again and definitively
Fig. 1
released, the current slope-down and post-gas time begin.
In BILEVEL the welder can weld with 2 different currents pre-
viously set via S5.
The first time the torch button is pressed, the pre-gas time is
run, the arc is struck and welding is performed with the initial
current.
The first time it is released, slope-up to current "I1" occurs. If
the welder presses and quickly releases the button, the
machine will go to "I2"; by pressing and quickly releasing the
button it returns to "I1" and so on.
If the button is pressed for longer, the current slope-down
begins which leads to the final current.
When the button is released the arc goes out while the gas
continues to flow for the post-gas time.
*
S4: Welding procedure selection key
Permits selection of the welding procedure.
Switch-on of the led at the side of the symbol confirms the
selection.
Procedures:
- MMA (electrode)
- TIG LIFT-ARC start
- TIG HIGH FREQUENCY start
