Hyundai Yanmar 3TNV82A-B, Manual

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CONTROL SYSTEM
TNV Application Manual 2-47
Starter motor start prevention
When the key switch is turned on, the Eco-governor performs rack self-diagnostics before starting the
engine in order to ensure safety. The starter motor must therefore be prevented from starting until rack self-
diagnostics is completed. Starter motor staring prevention can be implemented by connecting a starter relay
to the E-ECU. See
Figure 2-36 .
In addition to rack self-diagnostics, the E-ECU has the following features:
1. Safety relay (standard feature)
This feature turns the starter off when the engine speed reaches 675 min
-1
, and disables the starter to
start until the engine speed decreases to 325 min
-1
or less. (This feature is the same as provided by
119802-77200 when the pulley ratio is 2).
Figure 2-36 Timing chart of stator motor start prevention
2. Starter disable (optional feature)
This feature turns off the starter when it is energized continuously for 30 seconds, and disables it to be
energized for 30 seconds, thereby providing protection to the starter.
3. External switch control (optional feature)
This feature allows the starter to be disabled until an external switch (at APP-IP1 in common use for
droop selection) turns on. See
Figure 2-37 . This can be used for creating a safety system where the
starter cannot start unless a safety pedal is depressed.
The starter can be enabled via CAN communication in place of contact input at APP-IP1. The starter
can also be enabled by the AND of the APP-IP1 contact input and the CAN communication input.
The conditions that enable the starter can be changed using map flags for setting E-ECU applications.
S TART po s ition
Di sab le
S elf-di a gno s tic s
ECU
OFF S TART
ON
S t a rting
motor
Key S W
B a ttery
S
B
Rel a y
NO
ON po s ition
OFF po s ition
Di sab le
En ab le
E20
E7
E45, E47
E 8
Key
s
witch
Engine
S
peed
S
t
a
rter
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