Derivative Gain - To stabilize some machine control applica-
tions, it is necessary for the control box to know not only whether
the machine is at the desired slope or not, but how fast the slope
is changing and in what direction. This is known variously as
velocity or derivative (dv/dt) feedback. The control box can vary
the amount of velocity feedback added; choose among: “High”
“Medium” “Low” or “Off” This setting is to be left at medium for
almost all installations.
Auto Return - Is the time duration that it takes for the valve
to return the blade to the on-grade range after being manually
driven away from the laser light using the raise/lower switch. The
options available are in increments of 0.5 seconds with a range
from 0 (off) to 7.5 seconds. After the set time is expired, the unit
will move toward the last laser hit that it received. To disable this
feature set the time to 0.
Tilt Sensing On/Off - This is where you turn slope sensing on If
your system has the optional slope sensor feature. If Tilt Sensing
is set to Off the next menu will be Factory Settings.
Sensor Forward - For exibility in the sensor mount process,
the forward axis selection can orient the sensor after it is already
mounted. The label on top of the sensor shows a number for
each quadrant, enter the number that is facing the forward direc-
tion of travel. This will orient the sensor axis. In the bottom left
corner, the real-time slope is displayed, this will help in mechan-
ically adjusting the sensor to zero (level) after making sure the
control surface is level before calibrating.
Sensor Calibration - To ensure the sensor will produce relevant
readings, it must rst be calibrated. Ensure the sensor is enabled
in the Tilt Sensing On menu. Mount the sensor on the blade
using the LED indicators on the Control Box to level it. The sen-
sor should be secured in place where the on-grade green LEDs
are lit. Then, lower the blade on to a level or near-level surface,
and press the Menu button (Cal. A soft key). The screen will now
change to Position 2. While remaining in this screen, turn the
machine 180 degrees and lower the blade on the same loca-
tion as Position 1. Press the Menu button (Cal. B soft key) and if
successful, the screen will display the offset. The sensor is now
calibrated. If an error message occurs, it means the sensor was
not mounted close enough to level. Adjust the sensor to level and
restart the calibration procedure.
Filtering - Changing the ltering rate mathematically changes
the sensors viscosity. The slower the ltering setting the thicker
the sensor uid will appear. Depending on the machine and the
type of work, there will be a need to speed up or slow down the
sensor.
Medium Next
Change Next
Change Next
1.2% Next
Derivative gain
Auto Return Off
Tilt Sensing On
Sensor 3 Forward
Filtering Next
FAST - - I---Slow
Page 9
Cal.A Skip
Positn.1 0.2%
Cal.B Cancel
Positn.2 0.3%
Next
Offset = 1.2%
