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B-3
OPERATION
B-3
SYNERGIC 7F & FH
Timer/Crater Select - key enables
operator to choose crater speed, spot
or gas timers as indicated by the appro-
priate light. Pressing key causes lights
to sequence (left to right, top to bottom)
starting from the current indicated posi-
tion. Any parameter not available in the
mode selected is skipped over. If a
function is being displayed when the
Timer/Crater Select key is pressed,
then the light of the last parameter
selected before the function was cho-
sen will come on and become the start-
ing point for the sequencing.
Top Left Light
- indicates preflow time
is being displayed in seconds. This is
the time the shielding gas flows before
the wire feed and power source are
activated.
Top Right Light
- indicates postflow
time is being displayed in seconds.
This is the time the shielding gas flows
after the wire feed and power source
are deactivated.
Middle Light
- indicates that crater feed
speed is being displayed. Crater speed
is only available when 4-step trigger
with crater fill is selected. (See 4-step
trigger mode selection section). It is
activated by Step 3 and deactivated by
Step 4 of the 4-step sequence.
Bottom Light
- indicates spot on time is
being displayed in seconds.
NOTE: if unit is not
in spot mode then
this light will be skipped over in the
selection sequence.
Increase Arrow - key increases the
setting of the parameter selected to be
displayed, except Wire Feed Speed and
Volts/Trim which are controlled by the
encoder knobs.
Decrease Arrow - key decreases the
setting of the parameter selected to be
displayed, except Wire Feed Speed and
Volts/Trim which are controlled by the
encoder knobs.
Arrow Keys use the “Accelerating
Digit” method for setting changes,
where holding the arrow key causes
setting change rate to accelerate from
slow to fast. Releasing arrow key resets
to slow setting change.
Acceleration Selection
Pressing both the “Gas Purge” key and then the
function select key at the same time causes the
acceleration setting to be displayed. The display
will indicate “A-X” where X will be a number from
1 through 5 with 5 being the fastest acceleration.
This number can be adjusted using the arrow
keys. To exit this function, press both
these keys
again or press any other key except the arrow
keys.
Burnback Time Selection
If necessary, for higher wire feed speeds,
Burnback time may be selected to prevent the
electrode from sticking in the weld puddle at the
end of the weld. Pressing both the Gas Purge key
then the function select key at some time while
displaying the acceleration setting per above,
press the function select key a second time to dis-
play the Burnback time selection. Default is “b0”
which is zero delay. Selecting “b1" thru “b5"
selects delays from 10m sec to 50m sec in 10m
sec increments. To exit this function, press both
these keys again or press any other key except
the arrow keys.
Selection of English or Metric Speed
Display Units
Pressing both the Gas Purge key and then
timer select key at the same time causes the
speed display units to toggle between IPM
(no decimal point displayed) and m/m (a
decimal point displayed). If the speed dis-
play units were IPM, then they will change to
m/m. If the speed display units were m/m,
then they will change to IPM. If the display
is showing the volts/trim or one of the timers
when the keys are pressed, the display will
be changed to weld speed to indicate the
selected speed display units.
Run-In Selection
Pressing both the Gas Purge and Cold Feed
keys at the same time causes Run-In func-
tion to toggle on or off, as indicated by the
Run-In indicator light turning on or remaining
off in the function select sequence.
As shipped, the Run-In function is off with a
fixed setting of min. rated speed. Therefore,
the Run-In indicator light will not sequence
with the function select key, but the fixed
setting will still be used for actual Run-In
speed.
Activation of adjustable Run-In speed using
the above dual key press, will permit Run-In
speed to be adjusted with the arrow keys
and the Run-In indicator light will return to
the function key sequence. Re-pressing the
above dual key again removes the Run-In
light from the function key sequence, but
replaces the fixed Run-In speed with the
adjusted Run-in speed setting, until read-
justed.
1
2
PREFLOW POSTFLOW
SPOT
CRATER
V
WFS
RUN-IN
TRIM
/
VOLTS
1
2
PREFLOW POSTFLOW
SPOT
CRATER
GAS PURGE
GAS PURGE
GAS PURGE
COLD FEED