Hyundai Yanmar 3TNV82A-B, Manual

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CONTROL SYSTEM
TNV Application Manual 2-53
Engine cutoff
When the key switch is turned off and the rack actuator is shut off, the engine is cut off. (No stop solenoid is
required).
The engine can also be cut off by turning on terminal SHUDNSW to which an engine stop switch has been
connected. The engine stop switch is available in two types: NC (normally closed) and NO (normally open).
As the E-ECU usually assumes that the engine stop switch of NO type is used to stop the engine.
Furthermore the engine can be cut off by turning on the engine stop2 switch that connects to terminal APP-
IP7 provided that APP-IP7 has been set for engine stop2. Such an engine stop switch can be utilized as a
safety switch that stops the engine when the engine cover is opened, for example. The input signal to the
engine stop2 switch can also be given through CAN communication instead of from terminal APP-IP7. By
default, terminal APP-IP7 is set for Rmax 1.
Table 2-11 shows the comparison of engine cutoff means and Figure 2-45 shows a circuit example. The
engine stop switch is available in two types: NC (normally closed) and NO (normally open).
A failure detected by the E-ECU may cause the engine to stop. See 6 "Engine/control failure detection" for details.
Figure 2-45 Engine cutoff with external switch
Table 2-11 Comparison of engine cutoff means
Engine stop
input
switch
CAN
input
Engine stop conditions
Connection Contact Momentary
Rack actuator
relay
Rack Starter Recovery
SHUDNSW High side NC OK NG OFF Halt Disabled Turn Key off
APP-IP7 Low side NO OK OK OFF Halt Disabled Turn Key off
S HUDN S W(E15)
When the s top s witch i s of NC type (option a l)
When the s top2 s witch i s NO type ( s t a nd a rd)
S top s witch
NC
En ab led(clo s e)
Lock(open)
Di s connection(open)
Immo b ilizer
(with NC cont a ct s )
En ab led
Di sab led
Di sab led
OFF(col s e)
ON(open)
Di s connection(open)
Oper a tion
S top s witch
(with NC cont a ct s )
Di s connection
ECU
APP-IP7(E1 3 )
Di s connection
S top2 s witch
NO
0
1
-
CAN
inp
u t
En ab led
Di sab led
En ab led
OFF(open)
ON(clo s e)
Di s connection(open)
Oper a tion
S top2 s witch
(with NO cont a ct s )
Engine s top
clo s e
open
Engine s top
open
clo s e
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