Everlast Power i-MIG 353DPi, Руководство оператора

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Section 2 Setup Guide
Welding Functions on Panel Explained
5. ... continued. The Peak stage of the Double - Pulse will remain on as long as the Base stage of the Double - Pulse at this setting. However, on
this welder, instead of representing the value of the Pulse Time - On as 50/50, the pulse value is actually represented on the machine at
50%. Now, the 50% value represents how long the “ Peak ” Pulse stage stays on in relation to the “ Base ” Pulse stage. This means that a
setting of 25% would mean that the “ Peak ” Pulse stage would stay on 25% of the time during one Double - Pulse cycle. This would also
mean that the “ Base ” stage of the Pulse would take up the remaining 75% of time left in one cycle of the Pulse. The range of value is 10 to
90%. Starting at 90%, and adjusting downward will increase the separation of the puddle and allow greater freezing action to occur. Also,
note that the lower that you set the Pulse time - on the greater separation you will get in the finished puddle, and the greater control you will
have. However, as you gradually lower the Pulse Time - On settings, forward travel speed during the weld will be reduced slightly as time
the “ Hot ” stage is reduced and more “ cooling ” stage is introduced. When setting up the unit, the best results will often be obtained from 25
to 75% Pulse Time - On. Though this is not absolute, 50% is a good starting point.
6. Pulse Frequency. In order to form the Double - Pulse, the Pulse cycles between two layers of Single - Pulse. The number of times per sec-
ond that the Double - Pulse fully cycles between the two layers of Single - Pulse is called Frequency. Frequency is commonly referred to as
Pulses per Second (PPS). On the Power i - MIG 353DPi, this value is represented by “ Hertz ” or “ Hz ”. Hertz is the international standard
used to represent any type of basic frequency. One Hertz equals one full Pulse cycle per second, or more simply, one pulse per second.
This unit is designed to cycle between .1 and 9.9 Hz in Double Pulse Mode. Keep in mind, that this is how fast the Double Pulse cycles,
not how fast the single pulse cycles. The Pulse Frequency (Hz) of the Single - Pulse is set by factory programming (synergically) and is
based off user input of wire diameter, filler type and metal thickness of the base metal. This portion of the pulse should be set with higher
settings than the base part (represented by the Welding LED) of the Pulse or results will not be satisfactory. This LED is not accessible in
Single Pulse Mode. For more information, see the Pulse MIG section. For operation in Stick mode: The LED in the stick mode represents
the Stick Arc Force. It is used to automatically vary the automatic arc response while welding. While stick welding, the arc force counter
acts the drop in voltage experienced when the arc length is too short and falls below 20 volts. The amps are automatically increased to
offset the loss of voltage to maintain the welding arc and prevent the rod from going out and sticking. It can also be used to help increase
penetration by the operator “ pushing into the puddle ” when more heat is needed. The arc force amperage “ boost ” is represented as a per-
cent over set amperage that the amperage can be increased. Too much arc force while stick welding can cause burn through an violent
spatter. A low setting of 2 to 3 can be helpful with rods such as E7018, 7014, and 6013. E6011 benefits from a higher setting.
7. Welding Mode Control. This LED represents the default setting of the welder. It represents similar but different values in each welding
mode. In Standard, Non - Pulse MIG mode : This represents the mode in which you adjust Amps and Volts. In Synergic, Non - Pulse MIG
mode: This represents the mode in which you adjust Amps and Voltage Offset (Trim). While adjusting the Voltage Offset, you will see the
Offset displayed and then a briefly see the actual voltage that has been assigned to the setting. Offset Values will be between – 5 to +5. In
Single - Pulse Mode: This represents the mode in which you adjust Amps and Voltage Offset. (Trim). Voltage Offset values will be between
– 5 to +5. You will see no reflection of true voltage since Voltage is Pulsing rapidly between two factory preset levels and is irrelevant until
the weld is started. Double - Pulse Mode: This represents the “ Base ” stage of the Double - Pulse welding mode. This is the low Pulse layer
of the Double - Pulse mode. In comparison to the “ Peak ” Pulse value in item #4 on this page both Amps and Volts are pulsed synergically at
a lower average value. This layer of the pulse is used as the cooling stage, or the freezing stage that allows the weld puddle to cool to the
point that it creates the desired “ ripple ” in the weld. When used correctly, this creates the “ Stack - of - Dimes ” look that simulates TIG welding.
Keep in mind that this function should be set to a lower value than the “ Peak ” Double - Pulse value to achieve desirable results. Setting the
“ base ” layer too high will result in little puddle cooling. This will manifest itself in too much puddle fluidity. For a beginning setting, try
setting the Amps at a 50% value of the Peak. Keep the Voltage Offset at the same value as used in the “ Peak ” value. As skill develops,
some variation of the Voltage offset may be experimented with, but as a general rule, changing the Voltage Offset in either the Peak or the
Base layer will result in varying arc lengths which may destabilize the arc and increase spatter.
8. End/Arc Termination Control. The End LED represents the final active welding setting of the weld. This end stage of the weld cycle is used
to complete the weld in 4T mode and 4T special mode. This is used to fill the crater at the end of the weld using a lower setting that used
for welding. By retriggering the torch trigger ad holding, the weld will begin to cool and the arc reduce. The wire feeding will terminate
when the gun trigger is released. In this mode, be sure to set a lower Amp value than used for normal welding. Typically, there is no
reason to alter Volt offset, but if problems are encountered with too short of an arc during this phase, set the Volt offset to a lower setting
9. Burn - Back Timer Control. The burn - back timer controls the amount of time that the arc stays engaged after the trigger is released and the
wire feeding stops. This is to help reduce wire stick out and reduce the need to trim the wire before starting another weld. Also, it helps to
prevent craters in the weld by tapering off the heat during arc termination. A final benefit of burn - back control is that it prevents the wire
from sticking in the weld puddle once the arc is stopped. For best results this should be combined with the Post - flow setting in mind so
wire does not become oxidized during the burn - back process. (As a “ best practice ” keep Post - Flow activated at least one second longer
than burn back, more if welding thick metal at high amps.) If too much burn - back time is used, the wire may burn back up into the tip and
seize. Increase burn back by only increments of .05 to .06 of a second to prevent over adjusting the burn back and destroying the contact
tip. Generally, burn - back control will produce consistent results and increase productivity. Different wire diameters and feed rates will
change the burn - back time requirement. However, it is best to keep burn - back time, until personal experimentation yields better results, at
a relatively low setting, less than .1 seconds. Minimum burn - back time is .01 Seconds. Keep in mind burn back control is another tool
designed to help increase quality and repeatability of welds. Burn back control is available in all MIG welding Modes.
10. Burn - Back Volts/Volt Offset. This feature adjusts the Burn - Back Voltage or Voltage Offset/Trim. During Burn - Back, the Amps are not rele-
vant since amps are a function of wire - speed and wire feeding is stopped during the Burn - Back process. Depending upon desired effect,
and trimming requirements, the Burn–Back Volts/Volt Offset function should be set lower than or equal to the setting used for Welding. In
standard non - Pulse MIG mode, the actual Voltage is reflected in the Volt display. In the synergic MIG modes, the display changes to read
in values from – 5 to +5, the same as the other synergic functions which feature Voltage Offset/Trim adjustment. Keep in mind that too high
of a setting will create a rapid Burn - Back into the contact tip, which may necessitate the removal and premature replacement of the contact
tip. Occasionally after a mild Burn - Back, the wire may break free and “ jump ” and feed out slightly after the tip cools. In this case, be sure
to trim the tip before restarting to remove oxidation and impurities in the ball at the end of the wire.