the second door from the left in the front of the
The last section (G) to the right is the PRO-
PCC. The operational adjustments panel is
GRAMMED CONTROL lever. This lever is only
subdivided into four sections. From left to right
functional when the engine control mode switch
these sections are ENGINES, SHAFT TURNS,
of either GTE is in the PROGRAMMED
PITCH TRIM, and TIME SET.
position. The programmed control mode is the
primary mode of operation. The propulsion
ENGINES SECTION.--This section has six
system can be operated in the programmed
recessed, screwdriver adjustable potentiometers.
control mode using either one or both GTEs.
They provide calibration parameters for engine
The last edgewise meter on this panel is labeled
and propeller subroutines of the software
PILOTHOUSE THROTTLE POSITION. It
program.
indicates the actual position of the pilot house
At the top is the BIAS subsection with two
throttle lever and is used by the PCC operator to
adjustment potentiometers. These are used to
ensure the PROGRAMMED CONTROL LEVER
adjust the output of each GTE to 20,500 hp when
at the pilot house is in the same position as the
the GTEs are operating in the power mode in
PROGRAMMED CONTROL LEVER at the
programmed control with the programmed
PCC prior to transferring control.
control lever set at full power.
The next subsection in the engines section is
for the WASH SPEED. It has two indicators; the
upper potentiometer is for setting the UPPER
LIMIT speed at which the starter will be
turned OFF during a water wash. The lower
potentiometer is for setting the LOWER LIMIT
speed at which the starter will be turned ON
during a water wash.
The last subsection in the engines section is
RPM MODE. It also has two adjustment
potentiometers; both of the potentiometers
are associated with operating the plant in
programmed control with the propulsion mode
switch in the speed position. The upper poten-
tiometer is for adjusting the LOOP TIME
CONSTANT. In other words, it provides an
adjustment to change the response time of the
subroutine when the GTE is operating in the RPM
(speed) MODE. The lower potentiometer is for
adjusting the LOOP GAIN CONSTANT. It
Operational Adjustments Panel
provides an adjustment to change the amount
of feedback used in computing the throttle
The last panel on the PCC is the operational
commands in the RPM MODE.
adjustments-panel (fig. 6-11). It is located behind
Figure 6-11.--Operational adjustments panel.
6-24
