ENEL 150AC, Руководство пользователя

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5
• Tg[s] - time of gas flow after the arc extinction in seconds, adjustable in
the range 1-25s with the resolution of 1s
Examples of pulsating current signals for different settings of fp, Ib, TH
You can select the method of ignition using HF button (4):
CONTACT IGNITION - LAMP (9) IS OFF
The welding process is initiated by pressing a control button on the grip.
When the button is pressed the gas valve is opened. After releasing the
button
(while welding don't hold the button pressed!) you can ignite
the arc by touching the workpiece and slightly lifting an electrode (the arc
ignition occurs at the moment of lifting an electrode).
NON-CONTACT IGNITION - LAMP (9) IS ON
The welding process is initiated by pressing a control button on the grip.
When the button is pressed the gas valve is opened. Releasing the button
starts the ionizer - spark-over between an electrode and a workpiece
should initiate ignition of the arc. If ignition of the arc does not occur within
2.5s ionizer is turned off and ignition process must be repeated.
Following the arc ignition the welding current increases during the set
rise time Tn from minimum value (5A) to the set value of Is. Short
pressing (and releasing) the control button starts the process of
decreasing the welding current from the Is value to the minimum value
(during the set fall time To). If the control button is pressed briefly during
the current fall phase, welding current again will increase to the Is value.
When the current reaches the minimum value, welding current is turned
off and the arc is extinguished. Shielding gas flows still
during the set time
Tg, then the gas valve is being closed. The welding process has been
completed.
Is
Ib=50 %
TH=20 %
Tp=1/fp
Tp=1/fp
Ib=10 %
Is
TH=80 %