Migatronic MTE DIALOG, Instruction Manual

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Control box I is also equipped with the following:
13. Pulse current time
Here the duration of the pulse current is variable
between 0.03 and 2 seconds when the remote
control switch (pos. 11) is at "internal pulse".
14. Basic current time
Here the duration of the basic current is variable
between 0.03 and 2 seconds when the remote
control switch is set at "internal pulse".
15. Pre-weld gas flow
The pre-weld gas flow time is adjustable
between 0 and 2 seconds. It is thus possible to
choose the optimum pre-weld gas flow time.
16. Start and stop current
With this control it is decided at what current
level the welding shall start and stop. Start and
stop current are set in percentage of the set
current (pos. 9). When the switch (pos. 1) is at
self hold
, the stop current is switched on
as long as the torch button is held down after
the slope down time has expired.
17. Reduced current
With this control a reduced current level is set in
percentage of the set current (pos. 9).
If the switch (pos. 1) is at self hold or at
spot , a brief pressure (less than 0.3 sec.)
on the torch button will make the machine start
on reduced current. A long pressure (more than
0.3 sec.) will make it start on set current, with or
without slope up. The yellow lamp over the
button shows that the welding current is at the
reduced setting. Please observe that the
reduced current cannot be set to a lower value
than the one set at the button for start and stop
current (pos. 16).
During welding a brief pressure on the torch
button makes the machine switch from set
current to reduced current and back again. The
slope down function can work from set current
as well as reduced current.
If the remote control switch (pos. 11) is at
"internal Pulse", the basic current is controlled
by the reduced current knob (pos. 17), while the
pulse current can be adjusted by current
potentiometer (pos. 9).
When "reduced current" is activated by a brief
pressure at internal pulse, the pulse is stopped
and can be started again by a brief pressure.
The yellow lamp will light together with the pulse
current.
18. Slope-up
For some difficult welding jobs it is avantageous
to use the slope up function. If the switch (pos.
1) is at self hold
, the slope up works as
long as the torch button is held down and when
it is released the current will jump to "set
current". If the switch is at seam
or spot
the slope up function works until set
current has been reached. The slope up time is
adjustable between 0 and 10 seconds.
19. Spot welding time
Here the spot welding time can be set between
0.5 and 10 seconds. The time is measured after
the arc has been struck and when the time
expires the slope down function is activated.
Over the buttons slope-up, set current, slope
down and crater filling current there is a green
lamp indicating how long the machine has
reached in the programme. The following two
pages show the many variations of the
programmes.