119 Machinery Control System and Data Multiplexing System Fundamentals

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  1. EOOW/LU
    • Engineering Officer of the Watch/Logger Unit
    • monitors the engineering plant and bell and data logger.
    • located in CCS.
  2. PACC and SCU
    • Propulsion Auxiliary Control Console and Shaft Control Unit
    • provides monitoring and remote control of main propultion plant, and most of the auxiliary plant. (throttles, main engines, seawater service pumps, lube oil pumps, fuel pumps)
    • Located in CCS
  3. EPCC
    • Electric Plant Control Console
    • provides monitoring and remote control of the Electrical plant (generators, bus tie breakers)
    • Provides restart controls for the A/C Plants
  4. DCC and RSC
    • Damage Control Console and Repair Station Control
    • provides monitoring and remote control of the Firemain system (pumps, isolation valves) Also monitors space fire and flooding alarms.
    • CPS pressure zone controls are located above the console.
  5. LOCOP
    • Local Operating Control Console
    • Provides local control of the Gas Turbine Engine.
    • located adjacent to the GTM Module.
  6. NBPS
    • No Break Power Supply
    • Provides electrical power to the LOCOP.
    • It is located adjacent to the GTM Module
  7. Bell and Data Logger
    • Logs speed changes.
    • located at the EOOW console.
  8. ICAS
    • Integrated Condition Assessment System
    • Receives plant information either directly from DMS, the console, or portable hand held unit.
    • There are terminals in CCS, Main 1 and Main 2.
  9. UPS
    • Uninterruptable Power Supply
    • Provides 30 minutes of emergancy power in the event power is lost. Each console (LU, PACC, SCU, EPCC, and RSC)has its own UPS.

    • Discuss the priority of gas turbine engine control.
    • SCU has primary control and can take control away from other stations, then PACC, then SCC on the bridge.
  10. TC
    • Traffic Controllers
    • There are 5, one for each bus.
    • They provide orderly control of bus access for the AM and maintenance electronics.
  11. Bus
    • Each primary bus has 5 Radio Frequency (RF) channels. One channel is for control and the other 4 are for data.
    • Bus cables are arranged on the hull ( 2 port, 2 stbd and 1 along the keel) to maximize survivability.
    • The TC's are distributed forward to aft to maximize survivablity and are adjacent to the bus cables.
  12. AM
    • Area Multiplexer
    • There are 5 distributed along the main deck.
    • The AM is a dual redundant device with an identical A and B side. They convert electronic signals being sent to and from the bus.
  13. RM
    • Remote Multiplexer
    • There are 9.
    • The RM is a dual redundant device with an identical A and B side. They convert electronic signals between the AM's and the IOU's
  14. IOU
    • Input/Output Unit
    • There are 29, located adjacent to the equipment attached to it.
    • The IOU's connect to the A and B half of the RM's, and provide redundant communication to and from the RM's.
  15. Describe the function of DMS
    • The Data Multiplexing system is an asynchronous system.
    • Provides data transfer through a group of electronic equipment, and interconnecting cables.
    • DMS transmits everything from alarms to telephone calls.
    • All signals share the same 5 cables
  16. Where is the SCC
    Bridge
Author:
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Card Set:
119 Machinery Control System and Data Multiplexing System Fundamentals
Updated:
2015-11-15 05:02:46
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