Provide and install a microprocessor-based propulsion control systems, Voith ECS control
570 system or approved equal. In the event the Voith ECS control system is selected, the Contractor shall engage the services of Voith Turbo for the design, manufacturing, installation, and
commissioning of a control system fully compatible with the installed VSP or approved equal propulsion system.
The control systems for each driveline shall be independent of each other and shall be fully
575 compliant with the requirements for vital automated systems, found in 46 CFR Part 62 (Vital System Automation) and ABS requirements. Each system shall be fully redundant with the redundant (back-up) system running in hot-standby mode. In case of a control system fault, the redundant system shall take over navigation, indicate the fault at the control stations, and raise an alarm in the ship's alarm system.
580
In addition to the remote propulsion controls described herein, each engine, gear and VSP or approved equal shall have local controls located at the equipment in accordance with ABS and USCG requirements.
252.2 Control System Functions
The system shall be capable of controlling all necessary propulsion system parameters for each
585 driveline, including:
Selection of active control station
Thrust quantity and direction of each VSP or approved equal
Propulsion engine speed from idle to maximum rated speed. Engine speed shall normally
590 be push button controlled in four increments: Idle, Docked (nominally 600 rpm), Transit (nominally 720 rpm), and Full (750 rpm). The rpm settings shall be adjustable. Starting values shall be determined during detail design and the set points adjusted for best efficiency during commissioning and sea trials.
Coupling engagement (closed/open) for each engine
595
The Control System shall provide visual indication of all necessary parameters at each control station:
Ready indication
Alarm indication
Station in command
600
Active control system (main or redundant) for each VSP or approved equal
Longitudinal and transverse thrust set point of each VSP or approved equal
Actual longitudinal and transverse thrust position of each VSP or approved equal
Engine rpm, for each engine
Coupling Status (closed/open) for each engine
605
Shaft rpm
Indicator lights and displays shall be dimmable. Dimmer and lamp push to test controls shall be provided at each station.
Each propulsion train shall be capable of operating with either one (1) or two (2) engines engaged. When both engines on a driveline are engaged, engine speeds shall be synchronized,
610 the two engines shall share the load equally, and engine speed requests from remote stations shall apply to both engines.
Each propulsion train shall also be capable of being started using either of the two connected engines. The propulsion control system shall provide all controls necessary for the startup sequence, including fluid coupling pre-lubrication, selection of startup engine, startup engine
615 RPM setting, and coupling closure.
Each engine shall be started or shutdown at its respective local operating panel in the Engine Room. Individual engine shutdown controls shall also be provided in the EOS. Engine synchronization and coupling closure shall be controlled from the EOS. Engine and coupling status indication at shall be provided at each control station.
620
The vessel's control system shall provide interlocks to prevent coupling closure resulting in an unsafe condition. Coupling closure shall be permitted only when the rpm of the engine to be engaged is synchronized with the shaft rpm or both the engine and shaft line are at appropriate and safe speed for engine engagement.
The control system shall include provisions to automatically reduce pitch in the event of an
625 engine overload, and shall also limit maximum blade pitch when a VSP or approved equal is being driven by one engine.
The propulsion control system shall also indicate actual VSP or approved equal pitch and provide a lack of response alarm for each VSP or approved equal. The control system shall monitor requested longitudinal and transverse thrust set points. If the VSP or approved equal
630 does not respond with a matching change in actual thrust position, the control system shall generate an audible and visual alarm in the Pilot House and EOS.
Alarm and monitoring points for each VSP or approved equal and the propulsion control system shall be provided as required by Regulatory Body requirements and per manufacturer
recommendations, generally as noted in Section 436. Alarms shall be enunciated by the ship's
635 integrated alarm and monitoring system, as described in Section 436.
252.3 Control Stations
The control system shall have three (3) control stations for the propulsion system: one (1) in each Pilot House and a master unit in the EOS. Control layout shall be generally as shown in
References (2I) and (2M). Final control layout is subject to review and approval as described in
640 Sections 640.5 and 640.6.
252.3.1 EOS Control Station
The EOS remote control station shall include the following components:
Two (2) sets of identical controls, one (1) for each VSP or approved equal, consisting of:
o One (1) thrust control joystick
645
o One (1) 4-button module for VSP or approved equal operation and control functions including alarm indication, station transfer, standby pump, and active system selection.
o One (1) 4-button module for engine speed selection as described in Section 252.2 above.
650
o One (1) 12 inch touch screen HMI display, for display and control of propulsion system including drive status, states, settings, alarms and warnings, logging and trend graphing.
Independent display of actual VSP or approved equal thrust position for each VSP or approved equal. The displays shall be LED bar graph indicators or similar, which clearly
655 indicate actual longitudinal and transverse VSP or approved equal pitch. The independent displays shall be mounted in the EOS control console.
Coupling controls for each engine, engaged/disengaged for each fluid coupling
Digital display of operating rpm for each main engine
Digital display of shaft rpm for each main propulsion shaft
660
Individual shutdown controls for each engine
Emergency stop controls as described in Section 252.5
The VSP or approved equal control joysticks in the EOS control panel shall be arranged such that direction of joystick movement matches the resulting direction of vessel movement.
252.3.2 Pilot House Remote Control Station
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Each Pilot House remote control station shall include the following components:
Two (2) sets of identical controls, one (1) for each VSP or approved equal, consisting of:
o One (1) thrust control joystick
o One (1) 4-button modules for VSP or approved equal operation and control functions including alarm indication, station transfer, standby pump, and active
670 system selection.
o One (1) 4-button module for engine speed selection as described in Section 252.2 above.
o One (1) 7-inch touch screen HMI display for display and control of bridge related propulsion system parameters, alarms and warnings.
675
Independent display of actual VSP or approved equal thrust position. The displays shall be LED bar graph indicators or similar, which clearly indicate actual longitudinal and transverse VSP or approved equal pitch. The independent displays shall be mounted forward of the control consoles, in the pilot's line of sight, generally where shown on Reference (2M).
680
Coupling status indication, open/closed, for each fluid coupling
Emergency stop controls shall be provided as described in 252.5.
Provide the ABS recommended and operationally required parts listed in Table 200 - 7 with the control systems and deliver as directed by the Owner's Representative. Quantities listed in Table 200 - 7 are per vessel.
685
Table 200 - 7: Controls System ABS recommended and operationally required parts
Qty Item
1 Bridge Display, 7 inches 1 EOS Display, 12 inches
2 Operating Unit, - Bedienstreifen 4-Taster 2 Potentiometer,
2 Module, NAR9460005 4 Joystick, - 2 Axes 2 Module, NAR9460002 3 Module, NAR9460007 3 CPU, NAR9460001
1 Speed Detector, FAJ11-0315-E
1 Frequency Converter, BR R417000605
252.4 Control Transfer
Transfer of control between any two remote propulsion control stations shall be executed using the VSP or approved equal operating panels. The EOS station shall be the default station in
690 control. A control transfer between stations shall transfer the control functions for both fore and aft drivetrains concurrently.
The transfer of control between any two (2) remote stations shall require the joysticks to be in the zero pitch position.
The transfer of control between the EOS station and any of the other remote stations, or
695 between any station in one Pilot House and a station in the opposite Pilot House, shall be a two-step process: 1) Control transfer shall be initiated by pressing a control release push button at the active station, and 2) control transfer completed by pressing the control transfer button at the inactive station.
At any time, the EOS station may take back control from any of the other two (2) remote
700 propulsion control stations and block unauthorized control from any secondary station.
252.5 Emergency Stop
Independent, guarded, manually actuated emergency shutdown switches shall be provided at each control station. One (1) emergency stop switch shall be provided for each propulsion train, and the switch shall stop both engines connected to that propulsion train.
705