Commissioning and operation
21
2. Display device MMDS-L
The engine monitoring alarms the officer
guiding the ship when important engine
operating values are outside the permitted
tolerance range.
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Acoustically by means of an integrated
buzzer or horn connected at the ship-
yard
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Visually in that the relevant warning
lamp flashes
The engine operating parameters shown
on the display device are monitored.
If gearbox parameters are to be moni-
tored, this depends whether the corre-
sponding sensors have been fitted in the
gearbox.
51.27720–7008
System
Fault
RESET
Alarm
TYP MMDS–L
MAN MARINE DIESEL
Engine slow down
Engine coolant temp.
Electronics failure
Boost pressure
Exhaust gas temperature
Charge air temperature
Gearbox oil pressure
Engine oil pressure
Cool. press. expans. tank
Overspeed
Generator/speed sensor
Coolant level
Engine in operation
TEST
Sensor failure
Pressure air filter
Cool. press. water pump
Engine oil temperature
Gearbox oil temperature
The device distinguishes between the following types of alarm, error messages:
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Preliminary alarm: the corresponding light-emitting diode flashes
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Main alarm:
the corresponding light-emitting diode flashes
light-emitting diode “Alarm” flashes
In the case of an engine slow down alarm,
“Engine slow down” also flashes
In the case of a stop alarm, “Engine stop” also flashes
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Sensor fault:
the corresponding light-emitting diode flashes
light-emitting diode “Sensor fault” flashes
The alarm “Sensor fault” means that the corresponding sensor is classified by the moni-
toring system as defective, as it is returning an unrealistic value.
The engine speed is not reduced.
In the event of a fault in the electronic system, the warning lamp lights up continuously.
There is then a defect in the electronic fuel injection (EDC).
So as not to endanger the engine, the engine power is automatically reduced in the case
of selected main alarms.
Note for engines with electronically controlled diesel injection (EDC):
After the ignition has been switched on, the lamp “Electronic fault” lights up briefly
(lamp test). If there is a fault in the electronically controlled diesel injection (EDC),
the lamp “Electronic fault” lights up permanently.
