Man B&W S50MC-C8-TII, Руководство по проекту, Страница: 167 / 403

MAN B&W 5.18
Page 6 of 8
MAN Diesel
198 53 221.2 MAN B&W S70MC, S70MC-C/ME-C/ME-GI, L70MC-C/ME-C,
S60MC, S60MC-C/ME-C/ME-GI/ME-B, L60MC-C/ME-C,
S50MC, S50MC-C/ME-C/ME-B, S46MC-C/ME-B, S42MC,
S40MC-C/ME-B, S35MC, S35MC-C/ME-B, L35MC, S26MC
RPM Pitch
Coordinated
Control
System
Handles
interface
Duplicated Network
Engine
safety
system
Engine speed
System failure alarm, Load reduction, Load red. Cancel alarm
Engine overload (max. load)
STOP
Governor limiter cancel
RPM Pitch
I
Start/Stop/Slow turning, Start blocking, Remote/Local
Ahead/
Astern
Remote/Local
Fuel Index
Charge Air Press.
Terminals for
propeller
monitoring
sensors
P I
Pitch
Pitch Set
Local engine
control
Speed Set
Propulsion
Control
System
Bridge Wing
Shut down, Shut down reset/cancel
Propeller Pitch
Closed Loop
Control Box
Pitch
Operator
Panel (*)
Operator
Panel
Operator
Panel
Backup selected
Shaft Generator
/ PMS
Auxiliary Control
Equipment
Ship’s
Alarm
System
ES
Main Control Station
(Center)
Bridge Wing
BU: BackUp Control
Bridge
Engine Control Room
Engine Room
STOP
P I P I
ST
AR
T
Operator
Panel (*)
RPM Pitch RPM Pitch
ES: Emergency Stop
ES BU ES
Operator
Panel
(OPP)
Terminals for
engine monitoring
sensors
STOP
(In gover
nor)
Gover
nor
OVER
LOAD
178 22 406.1
Fig. 5.18.07: MAN Diesel’s Alphatronic 2000 Propulsion Control System
Alphatronic 2000 Propulsion Control System
MAN Diesel’s Alphatronic 2000 Propulsion Control
System (PCS) is designed for control of propul­
sion plants based on diesel engines with CP pro­
pellers. The plant could for instance include tunnel
gear with PTO/PTI, PTO gear, multiple engines on
one gearbox as well as multiple propeller plants.
As shown in Fig. 5.18.07, the propulsion control
system comprises a computer controlled system
with interconnections between control stations via
a redundant bus and a hard wired backup control
system for direct pitch control at constant shaft
speed.
The computer controlled system contains func­
tions for:
•
Machinery control of engine start/stop, engine
load limits and possible gear clutches.
•
Thrust control with optimization of propeller
pitch and shaft speed. Selection of combina­
tor, constant speed or separate thrust mode is
possible. The rates of changes are controlled to
ensure smooth manoeuvres and avoidance of
propeller cavitation.
•
A
Load control
function protects the engine
against overload. The load control function con­
tains a scavenge air smoke limiter, a load pro­
gramme for avoidance of high thermal stresses
in the engine, an automatic load reduction and
an engineer controlled limitation of maximum
load.
•
Functions for transfer of responsibility be­
tween the local control stand, engine control
room and control locations on the bridge are
incorporated in the system.