Hst Controller - Komatsu WA250-6 Shop Manual

SEN03834-01

HST controller

Input and output signals
DEUTSCH-40P [CN-HST]
Pin
Signal name
No.
1 VB (controller power)
2 Starting switch ACC signal
3 Wake up
4 Directional selector switch F
5 Directional lever N
6 Parking brake lever intermediate switch
7 HST controller power holding relay
8 NC
9 Clutch solenoid
10 HST pump F solenoid
11 VB (controller power)
12 Starting switch ACC signal
13 Alternator L signal
14 Directional selector switch N
15 Directional lever R
16 Parking brake lever bottom switch
17 HST safety relay
18 NC
19 HST motor 1 solenoid
20 HST pump R solenoid
18
10-920
Input/Output Pin
signal No.
Input 21 GND (controller GND)
Input 22 HST sensor power 5V
Input 23 Travel speed adjusting dial
Input 24 Directional selector switch R
Input 25 Directional selector switch operating switch
Input 26 Speed sensor A
Output 27 HST motor 2 solenoid relay
— 28 CAN0_H
Output 29 Cooling fan motor flow rate control EPC
Output 30 VIS (solenoid power)
Input 31 GND (controller GND)
Input 32 GND (sensor GND)
Input 33 HST oil pressure sensor
Input 34 Directional lever F
Input 35 Traction control switch
Input 36 Speed sensor B
Output 37 Cooling fan motor reverse rotation solenoid relay
— 38 CAN0_L
Output 39 Travel speed range selector switch
Output 40 SOL_COM (solenoid common GND)
920 Electrical system, Part 2

HST controller

Signal name
WA250, 250PZ-6
1
Input/Output
signal
—
Input
Input
Input
Input
Input
Output
Input/Output
Output
Input
—
—
Input
Input
Input
Input
Output
Input/Output
Input
—