ESAB Heliarc 281iAC/DC, Руководство по эксплуатации

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section 5 operation
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SECTION 5 OPERATION
CONTROLS & OPERATION (con't.)
5. Selecting Pulse Mode - See Figure 7
Figure 7 - DC & AC Pulsing
5.1 In the standby mode, press the Pulse mode key (F). The associated green ON PULSE LED will illuminate and
the digital displays will flash "dut" L.H. and "Fre" in the R.H. Use the Main Setting Control to set the desired
pulse repeat frequency (0.4-300Hz DC; 0.4-2Hz AC) as indicated in the R.H. display.
5.2 Press the Pulse mode key (F) a 2nd time to set the pulse peak to background time ratio or "duty" shown in
the L.H. display using the Main Setting Control. Note this is settable in 5% increments in the range 30- 65%.
5.3 In the standby mode, press the Final Current/Background key (FC). Before the display stops flashing set
the required background current using the Main Setting Control. Note that background (or final current)
is adjustable between 10% and 90% of the main (peak) current value. So for example, if the peak current
were set to 150A, and the background to 20%, during the background time the current would be 30A (20%
of 150A).
6. MMA Welding
6.1 Set the process/mode to Stick SMAW ( MMA ) .
WARNING
OPEN CIRCUIT VOLTAGE WILL NOW BE PRESENT AT THE WELDING
OUTPUT TERMINALS.
6.2 Set the desired welding current using the welding current control A.
6.3 If required select AC process. See Subsection 4. Set the AC frequency (F) and balance (B) as desired, nor-
mally 6 0Hz and 50% Balance.
6.4 The machine is now ready to weld.