Quantcast Securing Procedures
 

Click here to make tpub.com your Home Page

Page Title: Securing Procedures
Back | Up | Next

Click here for thousands of PDF manuals

Google


Web
www.tpub.com

Home

   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Logistics
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
   
   

 

supply circuit card fails, a hard-wired BITE fail signal
control monitor sends a battery status signal to the
control indicator, setting the BATTERY STAT indicator.
is sent to the control monitor, which was discussed in
If an overvoltage condition occurs in the battery charger,
the preceding paragraph. The gyro spin supply circuit
5-volt regulator, 13-volt regulator, or DC/DC module,
card is also tested under control of the processor. The
the fault indicator on the faulty card will set, and the con-
remaining circuit cards and assemblies are tested by the
trol monitor will send a signal to the control indicator,
processor. If the processor detects a fault, a signal is sent,
energizing the FAULT PS indicator. The control moni-
causing the four indicators located on the front of the
tor will also turn off the 5-volt regulator, 13-volt regula-
IMU to set in the proper combination to indicate the
tor, and DC/DC module when an overvoltage condition
faulty card. The control indicator also receives a signal,
occurs. The fault indicators will remain set after the
setting the FAULT IMU indicator.
power supply is turned off. A gyro overtemperature
condition, failure of the servoamplifier or gyro spin
ALARM RELAYS.-- A circuit card in the control
supply will also initiate no-go commands to the control
power supply contains alarm summary logic for the
monitor, which will shut down the power supply.
BITE circuits. The alarm summary logic receives
The control monitor also senses the voltage and
hard-wired BITE fault signals, alarm signals from faults
frequency of the 3-phase, 115-volt ac power and
detected by the processor, and alarm signals from the
synchro reference inputs at the transformer rectifier. If
transformer rectifier via the control monitor. Any one
the 3-phase input is lost or exceeds tolerances, the
or all of these signals will cause the alarm summary
control monitor will switch the gyro to battery operation
logic to send a signal to the control indicator, lighting
and send a signal to the control indicator, causing the
the ALARM indicator, and an alarm relay on signal to
BATTERY OPR indicator to come on. If the
the normally energized alarm relay. The alarm relay on
single-phase input is lost or exceeds tolerances, the
signal causes the alarm relay to reenergize, completing
control monitor will disconnect the ship's faultly input,
the circuit for the malfunction summary alarm.
switch on the inverter, sending a signal to the control
indicator, causing the ALARM indicator to set.
When the 3-phase power input is lost or exceeds
tolerances, the control monitor switches the operation to
Circuit cards and assemblies in the synchro signal
amplifier we monitored by hard-wired BITE. The 1X
battery power and sends out an alarm signal to the circuit
heading amplifier, 36X heading amplifier, roll amplifier,
card containing the alarm summary logic. The alarm sum-
pitch amplifier, and inverter in the synchro signal
mary logic sends a signal to the on-battery relay, which
amplifier have fault indicators located on the individual
is normally de-energized. When this relay energizes, it
circuit cards. The fault indicator on the inverter sets
completes the circuit for the on-battery alarm.
when the inverter or inverter magnetics module fails. A
fault in any of these circuit cards or module will cause
SECURING PROCEDURES
the fault indicator on the respective faulty circuit card
to set and a BITE fail signal to be sent to the fault
summary logic located in the inverter. The inverter then
To secure the AN/WSN-2 compass under normal
sends out a signal causing the FAULT BFR indicator on
conditions, refer to figure 4-44 and perform the
the control-indicator to set.
following steps:
If either of the heading amplifiers fail, the inverter
1. Set the MODE control to the POWER OFF
will send a heading fail signal to light the HDG FAIL
position.
indicator on the control-indicator. If the inverter or in-
2. Place the SYN REF switch to the OFF position.
verter magnetics module fail during inverter operation,
the inverter sends a signal to the control monitor to
3. Place the PWR switch to the OFF position.
command a power shutdown. A failure of either the
To secure the compass under emergency conditions,
servoamplifier or gyro spin supply, located in the IMU,
refer to figure 4-44 and perform the following steps:
causes a no-go signal to be sent to the control monitor.
The control monitor initiates a power shutdown and the
1. Place the PWR switch to the OFF position.
IMU fault indicator on the control indicator to set.
2. Place the SYN REF switch to the OFF position.
Circuit cards and assemblies in the IMU are tested
3. Set the MODE control to the POWER OFF
by a combination of hard-wired and software-monitored
BITE. When either the servoamplitier or gyro spin
position.

Privacy Statement - Press Release - Copyright Information. - Contact Us

Integrated Publishing, Inc.
6230 Stone Rd, Unit Q Port Richey, FL 34668

Phone For Parts Inquiries: (727) 493-0744
Google +