JLG 600SC_660SJC Service Manual - Manual (Page 64)

SECTION 4 - BOOM & PLATFORM
4-24 – JLG Lift – 3120898
How to Perform the Normal-Active Tuning
Process
Attach the "OPTIMIZER" programmer with the 4 wire cord
& connector to the SUPERFLEX controller terminals A, B,
C, D). Refer to Figure 4-34., OPTIMIZER Keypad and Fig-
ure 4-33., Typical SUPERFLEX System Wiring Diagram.
ADJUST THRESHOLD
Threshold is the initial current flow to a valve when the joy-
stick handle is moved approximately 4 degrees from its
neutral position. The Threshold point is normally adjusted
such that the control function does not move at 4 degrees,
but further increase in joystick position causes movement
to begin. To adjust Threshold:
ADJUST MAX OUT
Max Out determines the maximum current flow to the
valve when the joystick handle is at its fullest deflection
Max Out should be adjusted so that the function runs at
fun speed with the joystick handle fully deflected, but
starts to slow down as soon as the handle is moved away
from fun deflection. To change the Max Out setting in both
directions, perform the same procedure as that for
Threshold, just substitute the Max Out for Threshold.
ADJUST LOW RANGE
Low Range determines the maximum amount of current to
be supplied to a valve with the joystick at full deflection,
and the High/Low Range Switch in the low position. The
adjustment is identical to that of Threshold and Max Out. If
the Low Range function is not used, be sure that the Low
Range setting is set for 100%. The Low Range current will
be equal to the "Thresholds current plus a percentage (0
to 100%) of the difference between Max Out and Thresh-
old.
In the event of a loss of voltage at the Low Range input,
the SUPERFlEX will automatically revert to the Low Range
setting.
The Low Range Adjustment is indicated in the same units
as Max Out and Threshold. Its range of adjustment
extends from the threshold setting to the maximum output
setting. By design, this setting is dependent on the thresh-
old and maxout settings. It may require readjusting.
ADJUST RAMP UP
Ramp up determines the time it will take to accelerate
from Threshold to Max Out when the joystick handle is
moved abruptly. This function prevents sudden, jerky
movements of the machinery. The adjustment is identical
to that for Threshold. The ramp time is adjustable in 0.1
second steps. The time adjustment range is application
dependent.
ADJUST RAMP DOWN
Ramp Down specifies the amount of time it will take to
decelerate from Max Out to Threshold when a joystick
handle is returned to neutral. The adjustment of the Ramp
Down function is done in 0.1 second steps in the same
manner as that for Ramp up. (Press RUN button on OPTI-
MIZER to return to normal operation and store the new
setting).
Table 4-1. Adjusting Threshold
Perform the following: Action and display:
Connect 12 VDC power to the
(+)and (-) terminals of the
SUPERFLEX Controller The center LED located at the
SUPERFLEX Controller will
blink. The OPTlMIZER display
will read:
RUN MODE, NORMAL
CONTROLLERS OFF
Operate a joystick in any direc-
tion & maintain it in an operated
position, at threshold point of 4°
handle movement Display reads:
RUN: CONTROL 1 (or 2)
XX %, DIR A (or B.)
Operate a joystick in the oppo-
site direction and maintain it in an
operated position (Note that the
display changes.) Display reads:
RUN: CONTROL 1 (or 2)
XX%, DIR B (or A)
Press THRESHOLD] To begin
tuning (Joystick must be oper-
ated) Display reads:
THRESHOLD 1 (or 2)
XX %, DIR A (or B.)
Press [+] Display shows the increase in
%.
Press [-] Display shows the decrease in
%.
If Threshold settings are OK for both directions of handle move-
ment, proceed to save new data and run the equipment.
Press [ENTER] This will save new values in the
SUPERFLEX.
Press[RUN] This places SUPERFLEX in
operation.