Section 8. Theory of Operation
Model 5200 High-Level Orderpicker
Pinout Matrix Item #
Connection
Function Description
101
JPT12-11
102
Signal Source
Theory of Operation
Normal Level
B+
B+ from PC1 present when the battery is plugged in. It is fused by FU2 and then used to supply anything labeled B+F.
Battery connected = B+ battery disconnected = 0V
Connection STM 1 on PC Contactor
JPT12-12
B+
B+ from PC1 present when the battery is plugged in. It is fused by FU2 and then used to supply anything labeled B+F.
Battery connected = B+ battery disconnected = 0V
Connection STM 1 on PC Contactor
103
JPT12-6
12VP
Supplies working voltage to the hour meter. If not present, check voltage at STM JPT9-6 and see if IL1 is lit.
Key switch closed = +10.9VDC
STM
Hour Meter
104
JPT12-5
HOUR METER ENABLE
Path for the STM to supply B- to the hour meter.
Deadman closed= 12V Deadman Up= 0V
105
JPT12-4
DGND
Battery negative for the control circuitry on the steer power head. It comes from the STM.
<0.5VDC wrt TP4 (B–)
STM
Steer Power Head
106
JT1-1
NC
Not connected to any circuitry on the STM.
NA
NA
NA
107
JT1-2
TXD
Connection for computer interface no usable measurements available.
No useful voltages are measurable
108
JT1-3
RXD/PENDA NT1
Connection for computer interface no usable measurements available.
No useful voltages are measurable
109
JT1-4
DTR/PENDA NT2
Connection for computer interface no usable measurements available.
No useful voltages are measurable
110
JT1-5
DGND
B– supplied through the STM.
<0.5VDC wrt TP4 (B–)
STM
Lift Lower Pendant
111
JT1-6
DSR
Connection for computer interface no usable measurements available.
No useful voltages are measurable
112
JT1-7
RTS/BOOT
Connection for computer interface no usable measurements available.
No useful voltages are measurable
113
JT1-8
NC
Not connected to any circuitry on the STM.
NA
114
JT1-9
12VP
Supplies working voltage to the lift lower pendant. If not present, check voltage at STM JPT9-6 and see if IL1 is lit.
Key switch closed = +10.8 to 13VDC
STM
Lift Lower Pendant
8-22
SignalUser
Publication Number: 1043922B, Revised: 2 Sept 2015
