Yanmar 6LY3 series - Page 288

ELECTRICAL AND ECU
Remote Control Electronic Control System (ECS)
12-22 6LY3 Service Manual
© 2007 Yanmar Marine International
Alarm Indicators and Data Log
Alarm indicators and a buzzer comes on when sensors detect an abnormality during engine operation.
The alarm indicators are off during normal operation, but come on when an abnormality arises. (See the
table below.)
*1
“Log” shows alarm and is also memorized in ECU.
*2
“Engine Protection” shows the alarm and also limits the engine speed to 1800 rpm or less for engine
protection.
Alarm Diagram at Oil Pressure
Figure 12-34
Figure 12-34
Item ON OFF
Oil Press (Logging
*1
) (See Figure 12-34)
Coolant Temperature
Alarm 100°C (212°F) 95°C (203°F)
Engine protection
*2
(Log
*1
)
110°C (230°F) 105°C (221°F)
Oil Temperature
Alarm 110°C (230°F) 105°C (221°F)
Log
*1
120°C (248°F) 115°C (239°F)
Fuel Temperature
Alarm 80°C (176°F) 75°C (167°F)
Log
*1
90°C (194°F) 85°C (185°F)
Boost press *
1
, *
2
(Engine protection, Logging)
250 kPa (36 psi) 200 kPa (29 psi)
Over speed
(Engine stop, Logging *
1
)
3900 rpm —
0006297
200 kPa
(29 psi)
20 kPa
(2.9 psi)
1000
rpm
3000
rpm
Alarm OFF
Alarm ON
Alarm Diagram of Oil Pressure