Model 4700 Maintenance Manual
Section 8. Theory of Operation
Single Traction Motor Trucks >S/N 10676 Item
Connection
Function Description
Theory of Operation
Pinout Matrix Normal Level
Signal Source
Signal User
111
J32-2
N POT
Ground to Travel pot (P2) from the VM (J34-2). If not present check VM, wiring, and connections.
Battery voltage wrt BT1+
VM
P2
112
J32-3
VCC
Voltage to Travel pot (P2) from VM (J34-5). If not present, check VM, wiring, and connections.
Approx. +10V
VM
P2
113
J32-4
GND
Ground to Travel Enable switch (SW8) from the VM (J34-6). If not present, check VM, wiring, and connections. (Single Pedal Only)
Battery voltage wrt BT1+
VM
SW8
114
J32-5
EN.
Input from the Travel Enable switch (SW8) to the VM (J34-32). If not present, check switch, wiring, and connections. (Single Pedal Only)
Approx. 5V pedal released; 0V pedal depressed
SW8
VM
115
J32-6
/EN.
Input from the Travel Enable switch (SW8) to the VM (J34-31). If not present check switch, wiring, and connections. (Single Pedal Only)
Approx. 0V pedal released; 5V pedal depressed
SW8
VM
116
J33-1
GND
Ground to Forward Pedal switch (SW4) from the VM (J34-6). If not present, check VM, wiring, and connections. (Dual Pedal System)
Battery voltage wrt BT1+
VM
SW4
117
J33-2
FW
Input from the Forward Pedal switch (SW4) to the VM (J34-30). If not present check switch, wiring, and connections. (Dual Pedal System)
Approx. 5V pedal released; 0V pedal depressed
SW4
VM
118
J33-3
/FW
Input from the Forward Pedal switch (SW4) to the VM (J34-20). If not present, check switch, wiring, and connections. (Dual Pedal System)
Approx. 0V pedal released; 5V pedal depressed
SW4
VM
119
J33-4
GND
Ground from the VM (J34-6). If not present, check VM, wiring, and connections. (Dual Pedal System)
Battery voltage wrt BT1+
VM
VM
120
J33-5
CONFIG.
Configuration input to the VM (J34-25). This input allows VM to recognize Dual Pedal. If not present, check jumper, wiring, and connections. (Dual Pedal System)
Approx. 0V w/dual pedals; approx. 5V without dual pedals
VM
VM
121
J33-6
NOT USED
Publication 1160093, Issued: 20 May 2013
8-57
