Telwin TIG Series Bedienungsanleitung Seite 7

in the TIG/HF mode. Improves welding starting.
When in the MMA mode, use to insert the Voltage Reduction Device "VRD" .
7b INITIAL CURRENT (I
START
I
s
[A]
When in the TIG 2 stroke and SPOT modes it represents the initial current
I that is maintained for a fixed time with the torch push-button pressed
S
(adjustment in Amperes).
When in the TIG 4 stroke mode, it represents the initial current I
maintained for the whole time during which the torch push-button is pressed
(adjustment in Amperes).
When in the MMA mode, it represents the "HOT START" dynamic overcurrent
(adjustment 0 ÷ 100%). With indication on the display of the percentage
increase as to the pre-selected welding current value. This adjustment
improves welding fluidity.
7c INITIAL SLOPE (t )
START
t
s
[sec]
When in the TIG mode this is the initial slope time of the current (from I
(adjustment 0.1 ÷ 10 s). When at OFF there is no ramp.
The I and t parameters can be used even with remote commands
START START
given from the pedal, but the adjustment must be made before activating the
command.
7d MAIN CURRENT (I )
2
I
2
[A]
In the TIG AC/DC or in the MMA mode, I
and BI-LEVEL mode I is the maximum current. The parameter is measured
2
in Amperes.
7e BASE CURRENT - ARC FORCE
When in the TIG 4 stroke, Bi-LEVEL and PULSED mode, I
value that can be alternated with the main one, I
is measured in Amperes.
When in the MMA mode, this is the dynamic "ARC-FORCE" overcurrent
(adjustment 0 ÷ 100%); the display shows the percentage increase as to the
value of the pre-selected welding current. This adjustment improves welding
fluidity and stops the electrode from sticking to the workpiece.
7f FREQUENCY
Hz
This is the pulse frequency when in the TIG PULSED mode. For AC/DC
models in the TIG AC mode (with pulsing disabled), it is the frequency of the
welding current.
7g BALANCE
( AC/DC model )
BAL
( DC model )
BAL
When in the TIG PULSED mode, this is the ratio (as a percentage) between
the time during which the current is at its highest level (main welding current)
and the total pulse period. In addition, when the AC/DC models are in the
TIG AC mode (with pulsation disabled), the parameter represents a ratio
between the time with positive current and the time with negative current: if
the parameter value is negative heating and workpiece penetration increase,
if the parameter value is positive surface cleaning is greater and electrode
heat increases, while if the parameter value is null there is balance between
the negative and positive currents during the AC frequency period. (TAB. 4).
7h SPOT TIME
When in the TIG (SPOT) mode it represents the welding duration (adjustment
0.1 ÷ 10 s).
7k END SLOPE (t END )
When in the TIG mode it represents the end slope time of the current (from I
to I ) (adjustment 0.1 ÷ 10 s). When at OFF there is no ramp.
2
)
is the output current; in the PULSED
2
I
1
[A]
, during welding. The value
2
t
e
[sec]
7l END CURRENT (I END )
When in the TIG 2 stroke mode it represents the end current I
END RAMP (7k) has been set at a value higher than zero (> 0.1 s).
When in the TIG 4 stroke mode it represents the end current I
time during which the torch push-button is pressed.
The sizes are expressed in Amperes.
that is 7m POSTGAS
S
When in the TIG mode, it represents the POSTGAS time in seconds
(adjustment 0.1 - 10 s), and protects electrodes and pool welding from
oxidation.
7n ELECTRODE PREHEATING
to I )
S 2
When in the TIG AC mode, this adjusts electrode preheating to make welding
starting easier (adjustment 2.6 ÷ 53 A·sec.). The higher the value set, the
higher the preheating energy. When at OFF there is no preheating.
8- REMOTE CONTROL LED. Used to transfer control of the welding parameters to
the remote control.
9- Parameter setting (7) encoder knob and parameter selection key (7).
10- Alphanumeric display.
11- Green LED, power on.
12- ALARM signalling LED (the machine is blocked).
Resetting is automatic when the reason for alarm activation stops.
Alarm messages shown on the display (10) FIG. D:
- "AL.1" : the primary circuit safety thermal switch has been triggered (if
- "AL.2" : general protection has been triggered (thermal switch or network
- "AL.9" : protection triggered due to malfunction of the torch water cooling
When the welding machine is switched off, the signal "AL.2" may appear for a few
seconds.
4.2.3 Front panel (FIG. D1)
is the current 1- Positive (+) fast coupling for connecting the welding cable.
1
2- Negative (-) fast coupling for connecting the welding cable.
3- Control panel.
4- Welding mode selection push-button:
MMA - TIG LIFT
Operation mode: welding with coated electrode (MMA), TIG welding with arc strike
upon contact (TIG LIFT).
5- Welding parameters that can be adjusted using the encoder knob (6), associated
with the previous setting of 4.
To set each parameter:
a) select the parameter to be adjusted (by pressing the knob (6)), which is
indicated by the corresponding lit LED.
b) rotate the knob (6) and set the required value.
c) press the knob (6) again to adjust the next parameter.
NB: The parameters can be set as desired by the operator. There are, however,
value combinations that do not have a practical meaning for welding; in this case
the welding machine may not operate correctly.
5a VRD MMA
When in the MMA mode, it allows to insert the Voltage Reduction Device
"VRD".
5b HOT START
When in the MMA mode, it represents the "HOT START" dynamic overcurrent
(adjustment 0 ÷ 100%). With indication on the display of the percentage
increase as to the pre-selected welding current value. This adjustment
improves welding fluidity.
S
- 7 -
I
e
[A]
installed).
overvoltage or network undervoltage).
circuit. Resetting is not automatic.
but only if the
e
for the whole
e
[sec]
[A sec]
•