LOKERMANN GRAND TIG 250 DC PULSE, Руководство пользователя

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3.4.3
Remote
current
control
TIG series of welding machines can accept remote current control from a potentiometer/ analogue
signal or a digital up/down button signal. Potentiometer remote control will change the current from
the 5A minimum to the maximum set using the machine current control .Using an up/ down button
remote signal, the current may be increased or decreased in 1A increments, or ‘scrolls’ up to 30A at a
time if the button is held down. This is very useful for precision work.
12 Pin Remote Plug Connection
Socket
Pin
Function
Potentiometer Up/down
1 Not connected Not connected
2 Not connected Not connected
3
10k ohm (maximum) connection to 10k ohm
remote control potentiometer
Not connected
4
Wiper arm connection to 10k ohm remote
control potentiometer
Not connected
5
Zero ohm (minimum) connection to 10k ohm
remote control potentiometer
Not connected
6 Not connected The button of "UP" input
7 Not connected The button of "DOWN" input
8 Trigger Switch Input Trigger Switch Input
9 Trigger Switch Input Trigger Switch Input
10 Be shorted with 11 Not connected
11 Be shorted with 10 The button of "UP"& "DOWN" input
12 Not connected Not connected
3.4.4
Tig
Welding
Techniques
DC TIG Welding
The DC power source uses what is known as DC (direct current) in which
the main electrical component known as electrons flowin only one
direction from the negative pole (terminal) to the positive pole
(terminal). In the DC electrical circuit there is an electrical principle at
work which should always be taken into account when using any DC
circuit. With a DC circuit 70% of the energy (heat) is always on the
positive side. This needs to be understood because it determines what
terminal the TIG torch will be connected to (this rule applies to all the
other forms of DC welding as well ).