Telwin TIG DC AC/DC HF Manuel D'instructions page 7

N.B.: ALARMS STORAGE AND DISPLAY
With every alarm the machine's setting are stored. It is possible to recall the last 10
alarms as follows:
Press pushbutton (6a) "REMOTE COMMAND" for a few seconds
Code "AY.X" is displayed, where "Y" indicates the alarm number (A0 most recent, A9
oldest) and "X" indicates the type of alarm recorded (from 1 to 8, see AY.1 ... AY.8).
12- Green led, power on.
4.2.3 Front panel FIG. D2
1- Positive quick latch (+) to connect the welding cable.
2- Negative quick latch (-) to connect the welding cable.
3- Connector for cable connection of the TIG torch button (FIG. D2-a) and TIG controller
(FIG. D2-b).
4- Fitting for connecting the gas pipe of the TIG torch.
5- Controls panel.
6- Welding modes selection pushbuttons:
6a REMOTE COMMAND
Allows the transfer of the control of the welding parameters to the remote control.
6b TIG - MMA
Operating mode: coated electrode welding (MMA), TIG welding with contact arc lift
strike (TIG HF) and TIG welding with contact arc lift strike (TIG LIFT).
6c AC/DC
In TIG mode it allows selection between direct current (DC) welding and alternate
current (AC) welding (function present only on AC/DC models).
6d 2T - 4T - SPOT
In TIG mode it allows selection between 2-stroke or 4-stroke command, or with spot
welding timer (SPOT).
6e PULSE - PULSE EASY - BiLEVEL
In TIG mode the operator can choose between pulse, easy pulse or bi-level pulse
welding processes. The LEDs are OFF when the machine is in standard welding
mode.
7- Pushbutton for the selection of parameters to be set.
selects the parameter to be adjusted through the Encoder knob (9);
Pushbutton
the value and unit of measure are shown respectively on display (10) and led (11).
N.B.: The setting of parameters is free. Nevertheless, there are value combinations that
don't have any practical meaning for the welding; in this case the welding machine
could operate incorrectly.
N.B.: RE-SETTING OF ALL FACTORY PARAMETERS (RESET)
Press all buttons (8) together at start-up to reset the welding parameters to default
settings.
7a
In TIG/HF mode it represents the PRE-GAS time in seconds (adjustment range from
OFF, 0.1÷10 seconds). It improves the welding start.
7b
In TIG 2-stroke and SPOT modes this represents the start current I
set time with the torch button pressed (regulation in Ampere).
In 4-stroke TIG mode it represents the initial current Is maintained for the whole
time during which the torch pushbutton is pressed (adjustment in Amperes).
In MMA mode it represents the "HOT START" dynamic over-current (adjustment
range 0÷100%) with indication on display of the percentage increase in relation to
the value of the pre-selected welding current. This adjustment improves the weld
fluidity.
7c
In TIG mode this represents the start current slope up time (from I
0.1÷10sec.). The slope is no present when switched OFF.
The I and t parameters can be used even with the pedal remote control, but
START START
must be adjusted before activating the control itself.
7d
In TIG AC/DC and in the MMA modes, it represents the output current I
and in BI-LEVEL modes it is the highest level current (maximum). The parameter is
measured in Amperes.
PRE-GAS
START CURRENT (I )
START
maintained for a
S
INITIAL SLOPE (t )
START
to I ) (adjustment
S 2
MAIN CURRENT (I )
2
. In PULSED
2
- 7 -
7e
In 4-stroke TIG in the BI-LEVEL and in PULSED modes, I
the current, which can be alternated to the main I
expressed in Amperes.
In MMA mode, it represents the "ARC-FORCE" dynamic over-current (adjustment
range 0÷100%) with indication on display of the percentage increase in relation to
the value of the pre-selected welding current. This adjustment improves the weld
fluidity and avoids the electrode sticking to the piece being welded.
7f
In PULSED TIG mode, it represents the pulsing frequency. For the AC/DC models, in the TIG
AC mode (with pulsing disabled) it represents the welding current's frequency.
7g
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).
7 h
In TIG (SPOT) mode, it represents the duration of the welding (adjustment range
0.1÷10sec.).
7k
In TIG mode this represents the final current slope down time (from I
(adjustment 0.1÷10sec.). The slope is not present when switched OFF.
7l
In TIG 2-stroke mode, it represents the end current I
set on a value greater than zero (>0.1 sec.).
In TIG 4-stroke mode, it represents the end current I
which the torch pushbutton is pressed.
Magnitudes are expressed in Amperes.
7m
In TIG mode, it represents the POSTGAS time in seconds (adjustment range OFF,
0.1÷10sec.) and protects the electrode and the weld pool from oxidation.
7n
In TIG mode, AC represents the result of the current multiplied by the Tungsten
electrode preheating time from when the arc is switched on.
8- JOB
"RECALL" and "SAVE" pushbuttons to store and recall personalised programs.
9- Encoder knob for the setting of welding parameters that can be selected by
means of button (7).
10- Alphanumeric display.
11- Red led, indication of the unit of measure.
12- Green led, power on.
13- ALARM signalling LED (the machine is blocked).
Reset is automatic upon the cessation of the alarm motive.
Alarm messages appear on display (10):
- "A. 1" : primary circuit thermal protection tripping.
- "A. 2" : secondary circuit thermal protection tripping.
- "A. 3" : power supply line protection against over-voltage tripping.
- "A. 4" : power supply line protection against under-voltage tripping.
- "A. 5" : primary over-temperature protection tripping.
- "A. 6" : protection tripping for power supply line phase missing.
- "A. 7" : excessive deposit of dust within the welding machine, resetting by:
- inner cleaning of the machine;
- control panel display button.
- "A. 8" : Auxiliary voltage out of range.
- "A. 9" : safeguard triggered due to low pressure in water-cooled circuit in torch.
Resetting is not automatic.
Upon switching off of the welding machine, the "OFF" signalling could continue for
several seconds
BASE CURRENT - ARC FORCE
represents the value of
1
during welding. The value is
2
FREQUENCY
BALANCE
SPOT TIME
END SLOPE (t )
END
a I )
2 e
END CURRENT (I )
END
only if the END SLOPE (7k) is
e
for the whole time during
e
POSTGAS
ELECTRODE PREHEATING