30-60 Overview
D20x22 Series II Navigator HDD
A
UTO
D
RILL
- A
DJUST
The speed and pressure set points can only be adjusted while AutoDrill is enabled.
The first input from the
AutoDrill Selector Switch
(1)
shows which AutoDrill mode is
being controlled. The first input from the
Speed/Pressure Trim
Switch
(2)
changes
the display screen
(3)
to show the current speed or pressure set point. Refer to
•
If
Constant Thrust/Pullback Speed
is selected, additional inputs from the
Trim
Switch
(2)
result in approximately 1% increases in pump output (thrust speed).
•
If
Constant Thrust Pressure
or
Constant Rotation Pressure
is selected,
additional inputs from the
Trim Switch
(2)
result in 10-psi (70-kPa) changes in
the value of the initial pressure set point for the corresponding function.
•
In all three modes, the changed value is displayed for 3 seconds.
•
Holding the
Trim Switch
(2)
for 2 seconds initiates a process of ramping speed/
pressure up or down.
•
To switch between modes, pause AutoDrill and place joysticks in NEUTRAL
before selecting new mode. Use normal AutoDrill enabling procedures to set
new drilling parameters, or press the AutoDrill RESUME button. If RESUME is
used, drilling will resume at values used during the previously selected
Constant Auto Drilling Mode.
1
3
2
Содержание D20x22 Series II
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