Model 9600/9700 Swing-Reach ® Lift Truck
Section 8. Theory of Operation Pinout Matrix Function Description
Normal Level
Voltage Source
Voltage User
Part of the steering position feedback from the Steer Motor Encoder when the drive unit is rotated. It is a square wave identical to Channel A_4 but different phase. The TM uses the phase relationship of the two channels to determine that the direction and speed of the steering response is the same as that requested.
Not Turning: <1V or >4V Turning either direction: approx. 2.4V
Steer Motor Encoder
TM
DGND
B– for the Home Steer Prox.
Measure B+ at TP1 to verify connections. Then check for <0.5V wrt TP4.
TM
Home Steer Prox
JPT22-12
CHANNELB_5
Part of the height position feedback when the encoder is rotated. It is a square wave signal identical to Channel A_5 but different phase. The TM uses the phase relationship of the two channels to determine whether the main carriage on the truck is lifting or lowering. The number of pulses is used to determine the height.
At Rest: <1V or >4V Full lift/lower: approx. 2.3V
TM
Main Lift Height Encoder
206
JPT22-19
FU1_SENSE
B+ when STR contactor closes. This voltage is used by the TM to determine the state of FU1 and the STR contactor tips.
Closed: B+ Open: voltage drops very slowly
STR
TM
207
JPT22-20
FU4_SENSE
B+ when there is not an open between B+ and PC2. This voltage is used by the TM to determine the state of FU4 and the LHC contactor tips.
LPC Closed: B+ Open: voltage drops slowly to <1V
LHC
TM
208
JPT22-21
EPO_SENSE
Sense wire used by the TM to determine when the EPO is open. This is used to initiate braking and display a message.
EPO closed and key switch ON: B+ EPO open: <0.5V
EPO
TM
209
JPT24-3
DGND
B– for Custom In T1.
TM
Custom In T1
210
JPT24-4
DGND
B– for TMID0.
TM
TM
211
JPT24-5
DGND
B– for the Rail Sense switch (S15).
Measure B+ at TP1 to verify connections. Then check for <0.5V wrt TP4.
S15
TM
Item
Connection
203
JPT22-10
CHANNELB_4
204
JPT22-11
205
8-34
Theory of Operations
Publication: 1089040, Issued: 08 Apr 2016
