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CONTROL SYSTEM
TNV Application Manual
2-31
A high-accuracy coolant temperature sensor will also be able to connect to terminal TFO (E16). The
measurement error of the high-temperature coolant temperature sensor will be approximately ±2°C at 0 to
110°C.
The high-accuracy coolant temperature sensor can double as a coolant temperature switch (121250-44901)
whose measurement accuracy is required to be 110±3°C. (The high-accuracy coolant temperature sensor is
now under development).
When the coolant overheat alarm is used as shown in
, it recommended to used the high-
accuracy temperature sensor.
Accelerator sensor input
The Eco-governor uses the input voltage from the accelerator sensor or the input value through CAN
communication to calculate the target engine speed.
The input voltage from the accelerator sensor is converted into a speed value between the low idling speed
and the high idling speed. See
. By default, 0.7 V signal is converted into the high idling speed
and 0.3V signal into the low idling speed. Input voltages corresponding to the low and high idling speeds can
be adjusted provided that they are within the range of 0.2 to 4.6 V. If the input voltage from the accelerator
sensor is out of the above range, the E-ECU detects an accelerator sensor failure.
The input voltages can also be selected so that the gradient of the input voltage line segment between the
high and low idling speed points is reversed.
See "Application interface outline" for details on accelerator sensor setting.
Figure 2-16
Accelerator sensor input
5V
200k
ADC
E-ECU
100k
ADC
AVCC
(
E
38
)
GND-A
(
E2
8
)
AP
S
(
E
3
5
)
REAN
(
E
3
7
)
Acceler
a
tor
s
en
s
or
(
s
t
a
nd
a
rd)
B
a
ck
u
p
a
cceler
a
tor
s
en
s
or (option
a
l)
T
a
rget
s
peed
0
5.0
Inp
u
t volt
a
ge [V]
4.6
0.2
0.7
3
.0
S
en
s
or error
S
en
s
or error
High idling
Low idling
T
a
rget
s
peed
0
5.0
Inp
u
t volt
a
ge [V]
4.6
0.2
0.7
3
.0
S
en
s
or error
S
en
s
or error
High idling
Low idling
CANH
CANL
V-ECU
CANH
(
E40
)
CANL
(
E
3
9
)
Def
au
lt
a
n
a
log inp
u
t
s
etting
Option
a
l
a
n
a
log inp
u
t
s
etting
An
a
log inp
u
t
CAN inp
u
t
00_Electronic_Control_System.book 31 ページ 2006年5月29日 月曜日 午後2時12分
Summary of Contents for Yanmar 3TNV82A-B
Page 95: ...CONTROL SYSTEM 2 76 TNV Application Manual 00_Electronic_Control_System book 76...
Page 96: ...Appendix Standard harness 1 00_ _E fm 1...
Page 97: ...Appendix Standard harness 2 00_ _E fm 2...
Page 98: ...TNV Series service tool Operation Manual...
Page 132: ...32 7 Main Menu Figure 7 15 Data Logging Data Monitor Screen...
Page 145: ...7 Main Menu 45 Figure 7 27 System Installation Configuration Screen...