Unit6Remotecontrolsystem-I..doc

Unit 6 Remote control system （I） Introduction The Alphatronic 2000 propulsion control system – AT2000 PCS – is used for remote control of a ship’s propulsion line. A two– stroke low speed or four–stroke medium speed engine is connected to a controllable pitch propeller (CPP) through a reduction gearbox, with optional clutch control for the main engine clutch, power take–off (PTO) clutch to a shaft generator (SG) and the power take–in (PTI) clutch for a pony motor to startup the SG in PTI mode. The AT2000 PCS is operated by means of setpoint levers and standard AT2000 PCS panels with built–in four lines display. The AT2000 PCS is operated as a completely independent stand–alone system, with all information and internal alarms displayed on the PCS operator panels. When the AT2000 PCS is delivered together with a MAN BW Alpha four–stroke engine, the PCS is integrated on the Alphacomm units fitted on the engine. They ensure engine monitoring, engine safety system and gear monitoring by means of a communication network, enabling alarms, indications and measurement values from the Alphacomms to be displayed on the AT2000 PCS panels also. The AT2000 PCS can provide control of: ?? Main engine start/stop. ?? Main engine setpoint (combinator, constant rpm and separate). ?? Main engine load control (load control limitations). ?? Main engine load reduction (rpm and/ or load reduction). ?? Main engine speed measurement (and indication). ?? Combinator control from single lever in ECR and on the bridge. ?? Controllable pitch propeller (CPP) setpoint system (combinator curves). ?? Control transfer (bridge/ECR setpoint selection). ?? Propulsion mode selection (combinator, constant rpm and separate). ?? Bridge wing control with wing panels and electric shaft on setpoint levers. ?? Serial interface to Alphacomm units on the main engine (if mounted). ?? Alarm announcement and indication. The AT2000 PCS can be extended with the following options: ?? Clutch control (ME, PTO and PTI