PACC and PCC. Once again, your
use of the technical
to illuminate, allowing you to locate the burned out
manuals is essential. The PLCC and
LOP, like the PACC
lamps on the console.
and PCC, contain many circuits. It
would be impossible
ACC Maintenance
to begin troubleshooting without
using the technical
manual.
On FFG-7 class ships, the ACC circuits are similar
to those in the other consoles. The troubleshooting and
AUXILIARY CONTROL CONSOLE
maintenance procedures used on the ACC are the same.
Control and other electronic circuitry is located on
The auxiliary control console (ACC) is located in
circuit card assemblies.
the CCS on FFG-7 class ships. The ACC continually
Although faults in the ACC are rare, they do occur.
m o n i t o r s the auxiliary equipment necessary for
Most problems that occur to the ACC do so during
operation and support of the ship. For example, masker
normal operation of the ship's auxiliaries. As a GSE, you
and prairie air or firemain pressure is monitored at the
will be called to investigate any problems that occur in
p r o p e r meter. The ACC interfaces with the data
the ACC. Always refer to the manufacturer's technical
processor in the EPCC. Three primary interfaces are
manual when you perform any type of maintenance on
performed by this interface:
the ACC.
1. Processing of the discrete and analog data
ENGINEERING OFFICER OF THE
2. Processing of data for output to the digital
WATCH/LOGGING UNIT
display indicator (DDI) at the ACC
3. Data logging through communications (with
The engineering officer of the watch/logging unit
EPCC) with the data processor in the PCC
(EOOW/LU) is located in the CCS on DDG-51 class
ships. The EOOW/LU is manned by the engineering
The interface between the EPCC and the ACC is
officer of the watch (EOOW) and provides data to the
considered to be another peripheral device to the EPCC
p l a s m a displays in the pilothouse and combat
processor. The ACC has signal conditioners, A/D
information center (CIC). It also collects and logs data
converters, analog multiplexer, and alarm boards that
for the bell and data logging functions. The EOOW/LU
function the same as those in the EPCC.
p r o v i d e s a centralized location for accumulating,
This console is not normally manned, but is the
processing, and displaying the status of the machinery
responsibility of the watch standers in the CCS. Any
aboard the DDG-51 class ship.
problem or fault that occurs on the ACC is usually found
The EOOW/LU includes several special
during operation of a system. Maintenance of the ACC,
operational capabilities that are not in the other consoles
however, is the responsibility of the GSEs.
on the DDG-51 class ships. These capabilities are as
follows:
ACC Testing
Bell logging using a high-speed printer
Testing of the ACC is performed by the CCS watch
Data logging using magnetic tape cartridges
stander or a maintenance person. The tests on the ACC
installed in an AN/USH-26 magnetic tape unit
consist of a lamp test and audible test of the bell and
horn. The ACC has lamp test circuits for testing the
Software for loading bubble memories from the
indicator lamps and LEDs.
magnetic tape cartridges
The audible alarm tests are conducted by depressing
Computation and display of resource availability
the appropriate test push button on the top panel of the
parameters
ACC. This action will cause the audible alarm circuit to
sound an audible alarm. You will use these audible tests
Providing plasma display data to displays in the
to make sure the audible alarm circuits are functioning
CIC and the pilothouse
properly.
Since this console provides vital information to the
The lamp test is conducted by depressing a LAMP
EOOW, it is carefully monitored. Any malfunction that
TEST push button on the ACC. The ACC has three
occurs to the EOOW/LU is immediately noticed by the
LAMP TEST push buttons. Depressing one of these
E O O W . Maintenance of the EOOW/LU is the
push buttons causes the lamps on the appropriate section
responsibility of the GSEs.
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