Parameter Settings - ims PRO TIG 200 AC HF FV Manual Del Usuario

TIG 200 AC/DC HF FV • TIG 200L AC/DC HF
Welding options
Pulse
NB: Not available in 4T Log.
The pulses correspond to alternative increases and decreases in alternating current (hot current, cold current). The
Pulse mode is used to assemble the pieces whilst limiting the elevation of temperature.
Pulse Mode Settings :
- The cold current (20% at 70% of welding current)
- The welding frequency (from 0.2 to 20Hz for DC / from 0.2 to 2 Hz for AC) n.b. : hot and cold current times are the
same.
Easy Pulse
Simplified pulse mode. You only set the medium current around which the pulsation will oscillate.
The Easy mode determines the welding frequency and hot/cold current.
Spot
This mode is only available in TIG HF 2T DC.
This function allows spot-welding of work-piece to fix it in place before completing the full weld in TIG mode.

Parameter settings

Pre-gas (0 to 2 sec.)
The pre-gas provides protection for the area where the welding pool will be formed. It also improves
stability when the welding arc is created.
Advice : the longer the torch lead, the longer the time needed (0.15s/Meter of lead)
Up slope (0 to 5 sec.)
Time needed to go from minimum current to welding current.
Welding current setting
The value of the welding current needed depends on the thickness and the type of metal, as well as on the
welding configuration.
Advice : Take 30A/mm as a default setting for DC or 40A/mm for AC and adjust according to the piece to weld.
Cold current setting (low intensity) (from 20 to 70% of hot current)
Selected as a percentage of hot current : the colder the current, the cooler the welding piece will stay
during the welding process.
Pulse frequency setting (from 0.2 to 20Hz for DC / from 0.2 to 2 Hz for AC)
The pulse frequency is the number of cycles (½ cycle of hot current, ½ cycle of cold current) made in
a second.
AC Frequency setting (20 to 200 Hz)
AC Frequency is the number of alternates per second
(NB: If the current is low (for work on thin pieces), it is recommended to increase the frequency. For
higher currents, it is better to use low frequencies. For I> 100A, F (Hz) 100 Hz)
Balance setting (Welding with AC only from 20 to 60%)
On alternative current, the balance enables adjustment of the ratio between the positive and negative cycle.
For more information, refer to the specific subsection « TIG welding principles »
Down slope setting (0 to 10 sec)
Time needed to shift from welding current to minimum current. Avoids cracks and craters at the end of wel-
ding.
Post-gas setting (3 to 20 sec)
This parameter determines the length of time in which gas is released after the arc has stopped. It pro-
tects the weld pool and the electrode against oxidization whilst the metal is cooling after welding.
Advice : Increase the time if the welding seems dark.
(For default setting : 25A=4sec. – 50A=8sec. – 75A=9sec. – 100A=10sec. – 125A=11sec. – 150A=13sec).
n.b. : At any time, you can check your settings by a simple pressure on the parameter button, without
turning the wheel.
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