Rotation Speeds; Redundant Throttle Mode; Coolant Temperature - Yanmar 6SY Series Operation Manual

PRODUCT OVERVIEW

Rotation Speeds

Check instruments at regular intervals.
Rotation Speed
0 - 500 rpm Prohibited engine speed,
passed through when stopping
and starting.
500 - 700 rpm Slow idle. Engine idling is
controlled by the EMS / S6
control system.
700 - 2300 rpm Normal operating speed. The
engine operating speed range
is controlled by the EMS / S6
control system.
2400 - 2600 rpm Unsuitable operating speed.
2600 - 3000 rpm Prohibited engine speed.

Redundant Throttle Mode

If there is a fault with the normal throttle or
if CAN communication is interrupted, a
redundant throttle system is provided.
In the event of a CAN open circuit or
throttle fault:
• The EMS automatically switches to the
redundant throttle located on the key
switch panel.
• The redundant throttle must be set at
zero to be activated.
• A light will illuminate on the panel
indicating the redundant throttle is
activated.
24

Coolant Temperature

Normal coolant temperature when the
engine is running is 70° - 90°C
(158° - 194°F).
The EMS / S6 control system has the
following alarm levels:
• If the temperature is high, 98° - 103°C,
(208° - 217°F) for one second, the S6
control will send a CAN message which
activates a warning.
• If the temperature exceeds 103°C
(217°F), a warning is activated.
• A fault code is generated in the control
unit.
After an alarm, approved values must be
registered for more than two seconds
before resetting the alarm.
Excessively high coolant temperature can
damage the engine.
If run for extended periods under an
extremely light load, the engine may have
difficulty in maintaining normal operating
temperature. However, the temperature will
rise to a normal level again when the load
on the engine is increased.
6SY Operation Manual