8
100
-100
VALVE STEP
VALVE STEP
-10.0
-0.1
.01
10.0
ERROR (IN.)
OUTPUT (%)
ERROR DEADBAND ADJUSTMENT
ADJUST
ADJUST
HIDDEN ACCESS
STATUS DISPLAY DIAGRAM
Control Nulled (Within Deadband)
Valve Drive Less Than 25%
Valve Drive 25% to 50%
Valve Drive 50% to 75%
Valve Drive 75% to 100%
Valve Full On
Control Loop Indicators Active in Auto or Manual Mode
1960
OPERATOR CONSOLE SETUP
The console has two setup values which may be adjusted to
enhance machine operation. The first, sensitivity, affects
control responsiveness. See the Sensitivity, Error Deadband
And Valve Step Diagram.The second, display offset, is a
convenient way to reference the machine position display to
the work surface.
Sensitivity is adjusted by actuating the toggle switch with the
sensitivity switch pushed in. Display offset is changed by
actuating the toggle switch with the display offset switch
pushed in. A zero display value may be obtained by pressing
the null setpoint key while holding the display offset key
down.
The control console may be set up for many different types
of machines and to accomodate various operating conditions
which change infrequently. These are selected by accessing
the control parameters with a switch sequence on the operator
panel, then selecting the desired configuration variable and
its desired value. See Table A. Hidden Access Configuration
Variables for a list of variables which are available.
There are three levels of hidden access which are available:
factory, dealer and foreman. The assignment of configuration
variables to a particular hidden access level is accomplished
with the special configuration section of the ordering code.
Consult Danfoss.
The foreman level is accessed with the sensitivity switch and
null switch in sequence. Dealer access variables are available
with a second switch sequence from the foreman access
mode. Access to the dealer level parameters also gives
access to all foreman level parameters. Variables
designated as factory access are factory-set and cannot be
changed in the field.
Error deadband and valve step are adjustments which are
provided which would normally be assigned to foreman
access. Error deadband is the amount of sensor travel which
can occur without valve drive. The foreman should set the
relevant error deadband configuration variable (slope, wand
or ultrasonic) depending on which type of sensor he is using
(a pendulum for slope, a wand or ultrasonic for grade) and
leave the other two at their factory setting. Valve step ad
j
ust
is the amount of step valve drive provided with a sensed error
just outside the error deadband. When adjusting valve step,
the setting/message display shows raise or lower cylinder
speed if pushing the setpoint/actual switch. See the Sensitivity,
Error Deadband And Valve Step Diagram.
Variables not used by the particular KGS ordered will not be
displayed when scrolling through the hidden access list.
100
OUTPUT (%)
40
ERROR
DEADBAND
10.0
ERROR (IN.)
-40
-10.0
-100
VALVE STEP ADJUSTMENT
ERROR
DEADBAND
ADJUST
ADJUST
1849
1850
1848
SENSITIVITY, ERROR DEADBAND AND VALVE STEP DIAGRAM
S=10.0
S=1.0
VALVE STEP
10.0
0.2
-0.2
VALVE STEP
-10.0
ERROR (IN.)
-100
S=10.0
S=1.0
100
OUTPUT (%)
E R R O R
DEADBAND
E R R O R
DEADBAND
SENSITIVITY ADJUSTMENT
ADJUST
ADJUST