Toyota 7BPUE15 Service Manual page 355

Section 9. Theory of Operation
Pinout Matrix
PS
STEER
CURRENT
PSI-4 STEER
CURRENT
P S I - 1 1
NC
PSI-12
NC
PSI-13
NC
PSI-14
NC
J1-4 P C DRIVE
FORWARD
REVERSE
T F
J1-6
TRAVEL
REQUEST
JUMPER
JUMPER
Toyota Orderpicker Model 7BPUE 15 Service Manual
in the top side of the H bridge S R T PSI -2.
Input to the STM telling it the steer power
head has detected the steering system in
current limit.
Input to the STM telling it the actual motor
FB
current the steer power head has
measured in the steering system.
Not connected to any circuitry on the steer
power head or STM.
Not connected to any circuitry on the steer
power head or STM.
Not connected to any circuitry on the steer
power head or STM.
Not connected to any circuitry on the steer
power head or STM.
Input from the TPA to the STM to disable
if
the P C contactor a fault is detected by
the TPA.
Supplies working voltage to the TPA when
Input to the TPA from the STM to enable
the fork first travel circuits.
Input to the TPA from the STM to enable
the tractor first travel circuits.
Travel velocity request from the STM to the
TPA.
The iumper between J1-13 and
disables the emergency reverse option in
the TPA.
The iumper between J1-13 and
disables the emergency reverse option in
the Power Amp.
Steer
steering. O V in Power
current limit Head
O V not steering Steer
Power
fast Head
N
N A A
N
N A A
N
N A A
N
N A A
P C open 5V TPA
=
closed O V
=
TPA
closed
O V w/key switch
open
19V when travel STM
OV
is requested,
19V when travel STM
OV
is requested,
No request OV. STM
=
Travel request
voltage ramps up
to about 4.25V
at full speed
B-
TPA
connected
B-
TPA
connected
00700-CL222-05, 1 5 March 2005
STM
STM
N
A
N
A
N
A
N
A
STM
STM
TPA
TPA
TPA
TPA
TPA