WÄRTSILÄ 46F Series, Product Manual

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with tie breakers between the different sections, then the status of each tie breaker is required
for control of the load sharing in isochronous mode.
14.3 Alarm and monitoring signals
Regarding sensors on the engine, the actual configuration of signals and the alarm levels are
found in the project specific documentation supplied for all contracted projects.
14.4 Electrical consumers
14.4.1 Motor starters and operation of electrically driven pumps
Motor starters are not part of the control system supplied with the engine, but available as
loose supplied items.
14.4.1.1 Engine turning device (9N15)
The crankshaft can be slowly rotated with the turning device for maintenance purposes. The
motor starter must be designed for reversible control of the motor. The electric motor ratings
are listed in the table below.
Table 14-1 Electric motor ratings for engine turning device
Current [A] Power [kW] Frequency [Hz] Voltage [V] Engine type
5 2.2/2.6 50 / 60 3 x 400/440 Wärtsilä 46F
(6L,7L,8L)
12 5.5/6.4 50 / 60 3 x 400/440 Wärtsilä 46F
(9L,V-engines)
14.4.1.2 Pre-lubricating oil pump
The pre-lubricating oil pump must always be running when the engine is stopped. The pump
shall start when the engine stops, and stop when the engine starts. The engine control system
handles start/stop of the pump automatically via a motor starter.
It is recommended to arrange a back-up power supply from an emergency power source.
Diesel generators serving as the main source of electrical power must be able to resume their
operation in a black out situation by means of stored energy. Depending on system design
and classification regulations, it may be permissible to use the emergency generator.
14.4.1.3 Stand-by pump, lubricating oil (if applicable) (2P04)
The engine control system starts the pump automatically via a motor starter, if the lubricating
oil pressure drops below a preset level when the engine is running. There is a dedicated sensor
on the engine for this purpose.
The pump must not be running when the engine is stopped, nor may it be used for
pre-lubricating purposes. Neither should it be operated in parallel with the main pump, when
the main pump is in order.
14.4.1.4 Stand-by pump, HT cooling water (if applicable) (4P03)
The engine control system starts the pump automatically via a motor starter, if the cooling
water pressure drops below a preset level when the engine is running. There is a dedicated
sensor on the engine for this purpose.
DAAB605814 14-5
14. Automation System Wärtsilä 46F Product Guide