AirMan PDS400S-6C3, Service Manual

Page: 61 / 102

3. Electric System
3-23
Pin No. Line
color
Connection Function
CN1-12 R/W
Starter switch [ACC]
terminal
(Through 10A fuse)
Power supply
(2) Connector CN2
Pin No. Line
color
Connection Function
CN2-1 B Engine air filter
Compressor air filter
Grounding
CN2-2
－
NIL
CN2-3 G/R Engine controller (ECM)
CN3-17 terminal
When engine oil pressure abnormal signal is detected
emergency controller interior contact (RY3) is made
“ON”, power is sent to ECM CN3-7 terminal to make
engine emergency stop and abnormality lamp light on.
●
Emergency stop set oil pressure :
Lower than 14.6psi(0.1MPa)[1.0bar]
CN2-4 G/R Compressor air filter
It detects clogging of compressor air filter, and it enables
alarm lamp to blink.
●
Differential pressure for warning function :
More than 0.9psi(6.23kPa)[0.06bar]
CN2-5 G/L Engine air filter
It detects clogging of engine air filter, and it enables
alarm lamp to blink.
●
Differential pressure for warning function :
More than 0.9psi(6.23kPa)[0.06bar]
CN2-6 B
Engine coolant
temperature sensor
Discharge air temperature
sensor
Separator discharge air
temperature sensor
Sending unit
Grounding
CN2-7
－
NIL
CN2-8 Y/R Engine controller (ECM)
CN3-8 terminal
It detects (4 pulses per 1 revolution) engine speed, and
displayed on the operation panel.
CN2-9 G/B Discharge air temperature
sensor
Detect the discharge air temperature.
The interior contact (RY3) of emergency controller is
made “ON” when the discharge air temperature becomes
higher than emergency stop set temperature and power
is sent to ECM CN3-1 terminal to bring engine to
emergency stop, and to make the lamp flash when
warning, and to make the lamp light on when engine is
abnormal.
●
Warning
･
Emergency stop set temperature
Warning temperature : 239°F(115
℃
)
Emergency stop temperature: 248°F(120
℃
)
Discount-Equipment.com