Model 5200 High-Level Orderpicker
Section 8. Theory of Operation Pinout Matrix
Item #
Connection
Function Description
89
JPT12-20
90
Signal Source
Theory of Operation
Normal Level
PC CTRL
Path for the STM to supply B– to the PC contactor. There is also an LED (IL6-8) on the STM that lights when B– is supplied to the coil.
Not activated= 20.5V. Activated= less than 1 V.
STM
PC Contactor Coil
JPT12-17
BRAKE CTRL
Path for the STM to supply B– to the brake coil. There is also an LED (IL6-4) on the STM that lights when B– is supplied to the coil.
Not activated= 20.5V Activated= less than 1V
STM
Brake Coil
91
JPT12-15
SPARE CTRL
Path for the STM to supply B– to an optional device. There is also an LED (IL6-2) on the STM that lights when B– is supplied to the device.
Not activated= 20.5V Activated= less than 1V
STM
Optional Device
92
JPT12-7
NC
Not connected to any circuitry on the STM.
NA
NA
93
JPT12-24
B+HORN
B+ from the STM to the horn.
Key switch closed = B+ key switch open = 0V
STM
Horn
94
JPT12-19
HORN CTRL
Path for the STM to supply B– to the horn. Not activated= There is also an LED (IL6-6) on the STM 20.5V that lights when B– is supplied to the horn. Activated= less than 1V
STM
Horn
95
JPT12-10
B–
One of the three B– lines that provide a return path for the control circuits that are powered by B+.
<0.5VDC wrt TP4 (B–)
B– power cable at the TPA
STM
96
JPT12-23
B–
One of the three B– lines that provide a return path for the control circuits that are powered by B+.
<0.5VDC wrt TP4 (B–)
B– power cable at the TPA
STM
97
JPT12-22
B–
One of the three B– lines that provide a return path for the control circuits that are powered by B+.
<0.5VDC wrt TP4 (B–)
B– power cable at the TPA
STM
98
JPT12-3
P SENSE
The STM monitors the voltage in the Lift Motor circuit. The STM uses this voltage to determine the state of the P Contactor tips to verify that they are in the correct state and to initiate P contactor codes. It is also used to detect when the lift motor stops rotating. That information is used for correct sequencing of the L/L and L/H Sol Valves.
P contactor closed = B+ P contactor open = 0 volts
P Contactor
STM
99
JPT12-2
PC SENSE
PC Sense monitors the voltage on the output side of the PC contactor. It is used by the STM to verify the correct state of the PC Contactor and initiate PC codes.
PC contactor closed = B+ PC contactor open = 0V
PC Contactor
STM
100
JPT12-1
B+PC
B+ to the Tractor Manager when the PC tips are closed. This voltage supplies FU1 and then used to supply anything labeled as B+PCF.
PC contactor closed = B+ PC contactor open = 0V
PC Contactor
STM
Publication Number: 1043922B, Revised: 2 Sept 2015
SignalUser
8-21
