Know Your Machine; Panel Face And Functions - Everlast PowerPro 256 Operator's Manual

SECTION 2
2.1 Panel Face. The following is a unit panel
face from the PPRO 256 and PU 205P series
unit. Depending upon your unit, the panel face
may vary with regard to quantity and location
of controls and features. Use the appropriate
referenced number to refer to equivalent fea-
tures on your unit. Some numbers are omitted
on each panel because the function does not
apply to that unit.
1. Power lamp. This light illuminates while the
unit is powered on.
2. Over Current/Overheat lamp. This lamp
illuminates when the duty cycle has been ex-
1
3
3
2
2
8
9
8
9
10
16 17
15
15 16 17
1
3
1
3
2
1
2
8
8
13 14
13
17
17
ceeded or the machine has overheated due to
improper ventilation. Discontinue use until
lamp goes out. Allow the fan to continue to run.
Once lamp goes out, you may resume using the
unit and reset the breaker switch if necessary.
If frequent or continuous overheating is en-
countered, contact Everlast.
3. Digital Display. The display posts the ap-
proximate welding amps within ±3 amps. Dis-
play will change to reflect actual welding amps.
Pulse cycle amps will be displayed while weld-
4
5
6
4 5
6
3
11 12 13 14
10
12 13 14
11
20
18 19
18
19
20
4
21
14
ing, although when the machine is rapidly puls-
ing the meter may not catch up to the actual hi
and low amperage when it is sampling the am-
perage.
4. Pulse Power Control.
switch allows for use of the built in pulse. You
may select: Off, Low (L), or High (H). This fea-
ture pulses (cycles) the amperage between
base and peak amps to maintain fine control of
welding on thin materials or on out-of-position
welds. Noticeable fluctuation of the arc intensi-
ty occurs when the pulsing mechanism is on
at low frequency levels. Using the Pulse Time
ON switch will control the cycle length of the
pulse should more regulation be needed.
5. Pulse Frequency. The pulse frequency con-
trols the number of pulse cycles per second
7
7
(Hz). Where applicable, when the pulse is se-
lected for Low, the inner numbers are read. (.2
-25 cycles per second). When the pulse is se-
lected for High, read the outer numbers. (25-
500 for the PowerPro 256)
(25-250 for the PowerPro 164 & 205)
6. Pulse Amps.
of the Pulse Amps. Example: If the Amperage is
set for 100 amps, and the Pulse Amps control
knob is set for 95% (.9), then the low (base) am-
perage cycle of the pulse will be approximately
95 (90) amps. Regardless of nomenclature, the
basic function of the control is the same.
7. Pulse Time ON. This controls the ratio of
21
the relative amount of time that the pulse
spends on during a defined cycle . For example:
A setting of 50% will result in a balanced and
equally shared amount of time between the
Pulse current and the base current. A setting of
95% will result in the favoring of the Pulse stage
of the cycle with only 5% of the time spent in the
base stage (low) of the Pulse cycle.
Note: This does not control the overall length of
the pulse. The pulse frequency
setting sets the cycle length, thereby predeter-
mining the maximum possible length of each leg
of the cycle. But within each cycle length, there
is a definable length (ratio) of time that the
pulse spends in the base (low) amperage stage
of the cycle and in the peak (high) amperage
stage of the cycle.
14

KNOW YOUR MACHINE

This 3 position rocker
This gives proportional control