Everlast POWER i-MIG 253DP Operator's Manual page 24

Section 2
high end. Arc force control is also known as induct-
ance control, slope or wave form control (MIG). By
changing the level of inductance, the user can fine
tune the arc performance so the welder responds in a
manner that the user is accustomed to with other
brands of machines. The arc sound will also change
as the arc force is adjusted, going from a relatively
high pitched whine to a frying sizzle. The value of this
function cannot be overstated for controlling the arc
characteristics of the weld, especially in Pulse MIG
mode. The key to using this feature successfully and
getting the most out of it is to set this after Amps
and Volts/Off-set (Trim) functions have been adjust-
ed and tested. This feature is also used to fine-tune
results when custom blends or non-standard gas
mixes are used.
4. Peak Double-Pulse MIG Value/Stick Arc Force
Control. This LED represents an entirely different
function for the Synergic Double-Pulse MIG and Stick
welding modes. For operation in Double-Pulse (often
referred to as Pulse-on-Pulse) MIG mode: This fea-
ture is actually available for selection in Double-Pulse
Mode. The Double- Pulse mode is composed of two
"layers" of Single-Pulse and divides it up into half-
stages: High and Low. In each stage, the Amps and
Voltage Offset (Trim) can be adjusted just as in single
pulse. The "Peak" or rather "High Stage" value of the
Pulse is represented by this LED. All adjustments are
made as in Single Pulse mode. However, it should be
kept in mind that this part of the Double Pulse is the
"Hot" stage that provides the Penetration and more
rapid melting 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 acces-
sible 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 experi-
enced when the arc length is too short and falls be-
low 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 percent over set amperage that the
amperage can be increased. Too much arc force
while stick welding can cause burn through an violent
Setup Guide and component Identification
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.
5. Pulse Time-On. The Pulse Time-On function repre-
sented by this LED, is used to control the balance of the
"Peak" (#4) to "Base" (#) time of the Double-Pulse.
The Double-Pulse is separated into two layers of Single-
Pulse action. The Pulse Time-On adjustment is used to
skew the amount of time that each Single-Pulse layer
stays "on" during a single, complete cycle of the Double
-Pulse. Obviously, this can be a little confusing to nov-
ice users. In an effort to understand this function, im-
agine that a "balanced" setting between the 2 stages
(high and low stages) represents a 50/50 setting. This
means the stages are equal to each other in time
length. Each stage stays "on" for the exact same
amount of time as the other stage during one full cycle
of the Double-Pulse. In other words, the two stages
when added together, form one complete cycle of the
Double-Pulse, when put together. 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 rep-
resented 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 ob-
tained 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 second 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
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