Bedienungsanleitung Gys TIG 207 AC-DC HF FV (Seite 12 von 64) (Deutsch, Englisch, Holländisch, Französisch, Italienisch, Spanisch)

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Nb: For dual controls torches and dual potentiometer  command “up / warm current” and command" low /

cold current " + active potentiometer For this mode it may be convenient to use the dual torch option or dual

command + potentiometer. The "up" command keeps the same function as the simple torch command or

slip. The "down" command can, when pressed, switch to the cold current. The potentiometer of the torch,

where available, allows control of the welding current (warm and cold) from 50% to 100% of the value

displayed.

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.

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 »

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.

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