Section 8. Theory of Operation
Model 9600/9700 Swing-Reach ® Lift Truck
Pinout Matrix Function Description
Voltage Source
Voltage User
2.3V
TM
GM
Measure B+ at TP1 to verify connections. Then check for <0.5V wrt TP4.
FRC
GM
TM
FlashWare
TM
FlashWare
TM
FlashWare
Measure B+ at TP1 to verify connections. Then check for <0.5V wrt TP4.
TM
S51
Steer Amplifier (SA) input to the TM.
Deadman down: approx. 2.5V CCW steer: <1V; CW steer: >4V No steering: voltage varies
SA
TM
CW_PWM
Control voltage used to rotate the drive unit in the CW direction. The average DC value varies depending on the amount and speed of steering requested.
At rest: 11.9V CW fast: 4V CW slow: 11.8V
TM
SA
JPT6-3
STEER_CURRENT
Analog voltage that varies with steer motor current and is sent from the Steer Amplifier (SA) to the TM. This voltage is used by the TM to establish current reading for current limit.
Steering CW: 2.9V At rest: 2.5V CCW: 2.1V
SA
TM
JPT6-4
DGND
B– for the control circuits in the Steer Amp (SA). If missing, the SA does not power up.
Measure B+ at TP1 to verify connections. Then check for <0.5V wrt TP4.
TM
SA
Item
Connection
135
JPS4-6
BUS0+
Positive component of the digital communications between the TM and GM.
136
JPS6-24
B–F
B– to the GM. It is fused through FU6 on the Fuse/Relay Card.
137
JPT2-1
VBUS
Used to communicate with USB type connection via FlashWare.
138
JPT2-2
D+
Positive Data Bus used for USB type connection via FlashWare.
139
JPT2-3
D–
Negative Data Bus used for USB type connection via FlashWare.
140
JPT4-2
DGND
B– for the SLACK CHAIN 2 switch (S51).
141
JPT6-1
NEUTRAL_PULSE
142
JPT6-2
143
144
8-28
Theory of Operations
Normal Level
No useful voltages are measurable
Publication: 1089040, Issued: 08 Apr 2016
