Komatsu Galeo PC138US-8 Shop Manual page 287

10 Structure, function and maintenance standard
Input and output signals
AMP-81P [CN-C01]
Pin No. Signal name
1 Constant power supply (24 V)
2 GND
3 Window washer
4 Constant power supply (24 V)
5 GND
6 NC
7 NC
8 Potentiometer power supply (5 V)
9 Potentiometer power supply (5 V)
10 NC
11 Arm angle sensor
12 NC
13 L.H. travel REVERSE oil pressure sensor
14 Boom LOWER oil pressure switch
15 Arm OUT pressure switch
16 Swing oil pressure switch
17 Arm IN pressure switch
18 GND (analog signal)
19 Swing lock switch
20 NC
21 Model select 2
22 NC
23 NC
24 Starting switch ACC signal
25 NC
26 NC
27 NC
28 NC
29 Hydraulic oil temperature sensor
30 NC
31 Boom cylinder bottom oil pressure sensor
32 Blade RAISE oil pressure sensor
33 NC
34 Bucket DUMP oil pressure switch
35 NC
36 R.H. travel REVERSE oil pressure sensor
37 GND (digital signal)
38 Swing holding brake cancel switch
39 Model select 5
40 Model select 1
AMP-40P [CN-C02]
Pin No. Signal name
82 NC
83 NC
84 NC
85 NC
86 NC
87 2nd travel speed select solenoid
88 NC
89 NC
90 NC
91 NC
92 NC
93 Arm crane relay drive signal
94 Bucket DUMP operation lock solenoid
95 NC
96 PC-EPC
97 Oil flow adjuster EPC for attachment
98 NC
99 NC
100 NC
101 Swing holding brake solenoid
PC138US, USLC-8
Input/output
Pin No.
signal
Input 41
Input 42
Output 43
Input 44
Input 45
— 46
— 47
Output 48
Output 49
— 50
Input 51
— 52
Input 53
Input 54
Input 55
Input 56
Input 57
Input 58
Input 59
— 60
Input 61
— 62
— 63
Input 64
— 65
— 66
— 67
— 68
Input 69
— 70
Input 71
Input 72
— 73
Input 74
— 75
Input 76
Input 77
Input 78
Input 79
Input 80
81
Input/output
Pin No.
signal
— 102
— 103
— 104
— 105
— 106
Output 107
— 108
— 109
— 110
— 111
— 112
Output 113
Output 114
— 115
Output 116
Output 117
— 118
— 119
— 120
Output 121
Signal name
NC
NC
Starting switch ACC signal
GND (pulse signal)
CAN_H
GND (analog signal)
GND (analog signal)
NC
Pump oil pressure sensor
NC
Blade LOWER oil pressure sensor
Attachment oil pressure switch
Boom RAISE oil pressure switch
NC
R.H. travel FORWARD oil pressure sensor
Wiper motor reverse (W)
Cab front window open limit switch
Model select 4
NC
Starting switch C signal
NC
External start signal
NC
CAN_L
NC
NC
Boom angle sensor
NC
L.H. travel FORWARD oil pressure sensor
GND (analog signal)
NC
NC
Bucket CURL oil pressure switch
NC
Wiper motor stop (P)
Blade specification signal
Model select 3
Overload alarm enable signal
Starting switch ACC signal
NC
GND (digital signal)
Signal name
NC
NC
NC
NC
NC
Travel and swing alarm buzzer
Battery relay drive
NC
Travel junction solenoid
NC
Pump merge-divider solenoid
NC
Wiper motor (–)
GND (solenoid)
Solenoid power supply
GND (solenoid)
Solenoid power supply
Wiper motor (+)
GND (solenoid)
Solenoid power supply
SEN02553-01
Input/output
signal
—
—
Input
Input
Input/output
Input
Input
—
Input
—
Input
Input
Input
—
Input
Input
Input
Input
—
Input
—
Input
—
Input/output
—
—
Input
—
Input
Input
—
—
Input
—
Input
Input
Input
Input
Input
—
Input
Input/output
signal
—
—
—
—
—
Output
Output
—
Output
—
Output
—
Output
Input
Input
Input
Input
Output
Input
Input
29