PROPULSION CONTROL

The EMI Propulsion Control System is a programmable logic controller (PLC) based high performance system using the latest in industrial

control technology. This system is capable of controlling single and multiple engine installations from one or more control stations.

 

  • Electric, Pneumatic or Mechanical Interfaces

  • Shaft Brake Interface and Control

  • Synchronized Engine Control

  • Dynamic Positioning Interface 

  • Interface with any type of engine and gear units

  •  Heavy duty indoor and outdoor control heads

  • Single or twin screw control

  • Gear lockout

  • Independently adjustable shift

  • Interlock safety switch inputs

  • Independently adjustable shift and throttle outputs

  • Station lockout and throttle delays

  • Interlock safety switch inputs

AVAILABLE FEATURES INCLUDE:

      Electric, Pneumatic or Mechanical Interfaces      Shaft Brake Interface and Control      Synchronized Engine Control      Dynamic Positioning Interface       Interface with any type of engine and gear units       Heavy duty indoor and outdoor control
Two throttle control levers (for port and starboard main engines) are built into the Pilothouse Propulsion Control Station. Each lever has spring detents at idle, clutch ahead, and clutch astern positions. In addition to detents, two micro-limit switches a

 

Two throttle control levers (for port and starboard main engines) are built into the Pilothouse Propulsion Control Station. Each lever has spring detents at idle, clutch ahead, and clutch astern positions. In addition to detents, two micro-limit switches are internal to the throttle control lever. These limit switches close at the clutch ahead and clutch astern positions 

respectively, and send a 24V signal to the Pilothouse Propulsion Control Panel to indicate either an ahead or astern clutch command to the reduction gear. There is a potentiometer coupled to each throttle control lever that sends a variable voltage signal (proportionate to the desired engine speed) to the Engine Room Propulsion Control Panel.

 

TRANSFER REQUEST PUSHBUTTON

The transfer request pushbutton allows personnel at the Pilothouse Propulsion Control Station to request control of the propulsion engines. If the current station in control has the clutch of either engine engaged, the request will be denied. Also, if the station isolate pushbutton at the Engine Room Propulsion Control Station is depressed and the Engine Room Propulsion Control Station is currently in control of the engines, the request for control will be denied.

THROTTLE CONTROL LEVERS

STATION INDICATORS

An LED station indicator exists for the Engine Room Propulsion Control Station, each additional remote control station, and each external automatic control interface such as dynamic positioning or joystick systems. Only one such indicator will be lit at a time. The lighted indicator informs personnel of the current station in command.

 

LAMP TEST PUSH BUTTON

The lamp test pushbutton, when pressed, temporarily turns on all station indicators and illuminated pushbuttons. It should be used regularly to ensure all indicators are working properly.

 

DIMMER

A potentiometer (with knob) allows the operator to dim all indicators and illuminated pushbuttons for convenient nighttime use.

PROPULSION CONTROL SYSTEM COMPONENTS

The function of the Propulsion Control Panel is to relay control commands from the station in the  pilothouse to the clutch solenoids on the engines.  In addition, the panel also serves as the monitoring point for system alarms.

PROPULSION CONTROL PANEL

PART NO. 9999-Y10058M-3

The function of the Propulsion Control Panel is to relay control commands from the station in the 

pilothouse to the clutch solenoids on the engines.  In addition, the panel also serves as the monitoring point for system alarms.  The system is PLC based, is fused and contains circuit breakers and an independent power supply with a battery backup, to ensure system integrity in case of power loss.  A set of alarm indicators mounted on the door provide the operator with alarm status.  When an alarm sounds, the appropriate indicator will flash and the externally mounted siren will sound.  Pressing the “Acknowledge” button will silence the siren and cancel the alarm.  A lamp test button is provided to ensure the alarm annunciator lights are properly functioning.

The function of the Propulsion Control Panel is to relay control commands from the station in the   pilothouse to the clutch solenoids on the engines

PILOTHOUSE PROPULSION CONTROL STATION

PART NO. 9999-Y10058M-4

The function of the Propulsion Control Panel is to relay control commands from the station in the 

pilothouse to the clutch solenoids on the engines.  In addition, the panel also serves as the monitoring point for system alarms.  The system is PLC based, is fused and contains circuit breakers and an independent power supply with a battery backup, to ensure system integrity in case of power loss.  A set of alarm indicators mounted on the door provide the operator with alarm status.  When an alarm sounds, the appropriate indicator will flash and the externally mounted siren will sound.  Pressing the “Acknowledge” button will silence the siren and cancel the alarm.  A lamp test button is provided to ensure the alarm annunciator lights are properly functioning.

A remote alarm panel containing 32 alarm points is mounted in the pilothouse and gives the operator audio and visual indication of an alarm state.  When an alarm is active, the audible will sound and the appropriate indicator will illuminate, showing the alarm and the system in question. 

 Pressing the “ALARM SILENCE” button will silence the audible, but the alarm will remain illuminated until cleared at the propulsion control station.  The panel also includes a lamp test button for testing the illumination of the indicators, and a dimmer control for adjusting the brightness of the 

indicators during night operations.

32 POINT REMOTE ALARM PANEL

PART NO. 9999-50290

A remote alarm panel containing 32 alarm points is mounted in the pilothouse and gives the operator audio and visual indication of an alarm state.
Four junction boxes are provided, one for each engine, and one for each generator. These boxes provide a convenient connection location for the alarm sensors.

JUNCTION BOX

PART NO. 9999-Y10058M-05

Four junction boxes are provided, one for each engine, and one for each generator. These boxes provide a convenient connection location for the alarm sensors.

 

Each junction box consists of multiple terminals for sensor connections.  In each junction box a common 24VDC bus is run to one side of each alarm sensor connection.  A fuse is provided in each EMI supplied junction box to protect the 24VDC bus in the event of a short circuit.

The Remote Alarm Panel accepts alarm state inputs from the Main Alarm Panel and displays identical alarms.  These inputs feed directly to Alarm Annunciator PC Boards located within the remote panel.  The remote panel also includes a local audible

SIREN

PART NO. 9999-46810

The Remote Alarm Panel accepts alarm state inputs from the Main Alarm Panel and displays identical alarms.  These inputs feed directly to Alarm Annunciator PC Boards located within the remote panel.  The remote panel also includes a local audible.  A lamp test pushbutton is provided to test all the indicators on the remote panel.  A dimmer control is provided to decrease the brightness of the indicators.  The audible alarm may be silenced at the remote panel, but will not affect the audible alarm at the master panel.