dabotek DT1200i, Руководство по эксплуатации

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4.3.3 Setting the Welding Current and Time
The Current is controlled by using a microprocessor with an auto tuning function. Pressing
the push-button switch on the front panel toggles the display presentation between Current
and Time. There are separate (potentiometer) controls for setting the Current and the Time.
When the current value is set to 1200 Amps and a stud is welded, the actual current
delivered (measured value) is displayed after completion of the stud. This current is shown
flashing for 6 seconds. Thereafter, the average between the set value and the measured
value is displayed.
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For example:
If a value of 1000 Amps is entered into the display and the measured value of 1400 Amps is
flashed after shooting a stud, 1200 Amps is displayed 6 seconds later. If the stud’s height
reduction is correct, the 1200 Amps is maintained. If the height reduction is excessive, the
1400 Amps is reduced to 1000 Amps and measured current will be 1100 Amps. Normally
the difference between “set” and “measured” is less and only one stud is needed for tuning in
process.
The measured current may fluctuate up to 5 % (60 Amps @1200 Amps) dependent on the
surface which is welded on and the angle of the stud. Typical variations from stud to stud
may be a low as 1% or 12 Amps.
The Stud Time can be set from 0.05 seconds to 2.00 seconds with 0.01 second accuracy in
.01 second increments using the Time control switch.
4.3.4 Setting the DT1200 (non-Digital)
The DT1200 (non-digital) model is always in ”P” mode, and no other mode is available.
4.3.5 Process for various Stud welding positions
Drawn Arc Stud Welding allows weldable 1/8” to 5/8” diameter Studs made of non-alloyed,
alloyed, stainless and heat-resistant steels to suitable base materials. The following is a guide
for welding positions using the DT1200 and DT1200i machines:
Stud Welding
Minimum Welding
Process Stud Diameter Plate Thickness Position
With a Ceramic
1/4” to 5/8” One (1/4”) Quarter Horizontal
Ferrule Inch Vertical
Overhead
Using Inert Gas
1/4 to ½” One (1/4”) Quarter Horizontal
Inch Only
Short Cycle
Less than ½” 16 Gauge Horizontal
Vertical
Overhead