Section 8. Theory of Operation
Model 9600/9700 Swing-Reach ® Lift Truck
Pinout Matrix Function Description
Normal Level
Voltage Source
Voltage User
Analog input that varies with Load Handler motor temperature. Used by the TM to control cooling fan (Fan1) operation.
Approx. 1V @ 75°F (24°C)
Load Handler Motor Temp Sensor
TM
BATTERY_ SENSE_IN
B+ present when the battery is plugged in. It is supplied through a thermistor on the Fuse/Relay Card. This is used by the TM to determine the correct battery is installed. It accepts between 37.3 and 58.7V. If the correct battery is sensed, Relay_Enable is energized during Startup. After Startup, this voltage is used to determine BSOC.
B+ (there should be no voltage drop)
TP1
TM
JPTA1-1
B+K3
B+ present when K3 is energized. This is Energized: B+ K3 used to power the control circuits of the TPA.
TPA
226
JPTA1-6
TPC CONTACTOR
Control path for the TPC. The TPA supplies a path for B– for the contactor by way of the B– terminal.
TPC De-energized: B+ Energized: 26.4V
TPA
TPC
227
JPTA1-7
T VEL SENSOR –
B– for the Traction Motor Encoder (TME), Traction Motor Temperature (TMT) sensor, and TME cable shield.
Measure B+ at TP1 to verify connections. Then check for <0.5V wrt TP4.
TPA
TME and shield, TMT
228
JPTA1-8
T TEMP+
Input from Traction Motor Temperature (TMT) sensor that varies with motor temperature. Used by the TPA to adjust motor performance.
Approx. 1V @ 75°F (24°C)
TMT
TPA
229
JPTA1-12
ID1
B+ present at the TPA with K3 tips energized. It is used as an identifier to determine correct connection.
K3 energized: B+
K3
TPA
230
JPTA1-13
TPC SUPPLY (B+K3)
B+ for the TPC contactor coil. The TPA supplies B+ to the TPC contactor coil.
B+
TPA
TPC
231
JPTA1-23
BUS0+
Positive component of the digital communications between the TPA, LPA, TM, and GM.
2.3V
TM
TPA, LPA, TM, GM
232
JPTA1-26
T VEL SENSOR +
5V supply to the Traction Motor Encoder (TME). This voltage is produced by the TPA from B+K3.
4.75 to 5.25V
TPA
TME
233
JPTA1-31
T VEL PHASE A
Input signal from the TME. It is a square wave that is either high (>3V) or low (<1V). The frequency varies directly with the speed of the Traction Motor. Identical to T VEL Phase B, except for phase. The TPA uses the relationship between phase A and B to determine travel speed and direction.
Motor Stationary: >3V or <1V Turning: approx. 2.3V
TME
TPA
Item
Connection
223
JPT24-23
LHM TEMP
224
JPT24-24
225
8-36
Theory of Operations
Publication: 1089040, Issued: 08 Apr 2016
