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Model 4700 Maintenance Manual
Section 8.Theory of Operation
All Dual Traction Motor Trucks and Single Traction Motor Trucks <S/N10677Pinout Matrix
401PPA (W)PPA (W)One of three phases from the PPA to the Pump Motor. Voltage is measured between any two phases. If not present, check the PPA, wiring, and connections.
402TPA B+B+B+ from the battery to the TPA through fuse FT. If not present, make sure the battery is connected. Check fuse, wiring, and connections.
403TPA B–B–B– from the battery to the TPA. If not present, make sure the battery is connected. Check the wiring and connections.
404TPA (U)TPA (U)One of three phases from the TPA to the Traction Motor. Voltage is measured between any two phases. If not present, check the TPA, wiring, and connections.
405TPA (V)TPA (V)One of three phases from the TPA to the Traction Motor. Voltage is measured between any two phases. If not present, check the TPA, wiring, and connections.
406TPA (W)TPA (W)One of three phases from the TPA to the Traction Motor. Voltage is measured between any two phases. If not present, check the TPA, wiring, and connections.
407TPA (UM)TPA (UM)One of three phases from the Master TPA to the Right Traction Motor. Voltage is measured between any two phases. If not present, check the TPA, wiring, and connections.
408TPA (VM)TPA (VM)One of three phases from the Master TPA to the Right Traction Motor. Voltage is measured between any two phases. If not present, check the TPA, wiring, and connections.
409TPA (WM)TPA (WM)One of three phases from the Master TPA to the Right Traction Motor. Voltage is measured between any two phases. If not present, check the TPA, wiring, and connections.
Publication 1160093, Issued: 20 May 2013
0 to approx. 20VAC; approx. 200A ramping; approx. 250A full lift
PPAPM
B+ J1+TPA
Battery voltage wrt BT1+
0 to approx. 20VAC; approx. 50A ramping; approx. 35A full speed on jack
0 to approx. 20VAC; approx. 50A ramping; approx. 35A full speed on jack
0 to approx. 20VAC; approx. 50A ramping; approx. 35A full speed on jack
0 to approx. 20VAC; approx. 50A ramping; approx. 35A full speed on jack
0 to approx. 20VAC; approx. 50A ramping; approx. 35A full speed on jack
0 to approx. 20VAC; approx. 50A ramping; approx. 35A full speed on jack
TPATraction Motor
TPATraction Motor
TPATraction Motor
TPARight Traction Motor
TPARight Traction Motor
TPARight Traction Motor
Section 8.Theory of Operation
Model 4700 Maintenance Manual
Pinout MatrixAll Dual Traction Motor Trucks and Single Traction Motor Trucks <S/N10677
410TPA (US)TPA (US)One of three phases from the Slave TPA to the Left Traction Motor. Voltage is measured between any two phases. If not present, check the TPA, wiring, and connections.
411TPA (VS)TPA (VS)One of three phases from the Slave TPA to the Left Traction Motor. Voltage is measured between any two phases. If not present, check the TPA, wiring, and connections.
412TPA (WS)TPA (WS)One of three phases from the Slave TPA to the Left Traction Motor. Voltage is measured between any two phases. If not present, check the TPA, wiring, and connections.
0 to approx. 20VAC; approx. 50A ramping; approx. 35A full speed on jack
0 to approx. 20VAC; approx. 50A ramping; approx. 35A full speed on jack
0 to approx. 20VAC; approx. 50A ramping; approx. 35A full speed on jack
TPALeft Traction Motor
TPALeft Traction Motor
TPALeft Traction Motor
Publication 1160093, Issued: 20 May 2013
