Model 4700 Maintenance Manual

Section 8.Theory of Operation

All Dual Traction Motor Trucks and Single Traction Motor Trucks <S/N10677Pinout Matrix

150J15-2 GND

Single Traction Motor TruckGround to the Traction Motor (TM) encoder (EN1) from the TPA (JT6-2). If not present, check the TPA, wiring, and connections.

Battery voltage wrt BT1+ TPAEN1

151J15-3 RTM ENCODER CHANNEL B

Dual Traction Motor TruckChannel B from the Right Traction Motor (RTM) encoder (EN1) to the TPA (JCT-14). If not present, check voltage to the encoder, wiring, and connections.

Approx. 5V running; 0V or 10V static

EN1TPA

152J15-3 TM ENCODER CHANNEL B

Single Traction Motor TruckChannel B from the Traction Motor (TM) encoder (EN1) to the TPA (JT6-5). If not present, check voltage to the encoder, wiring, and connections.

Approx. 5V running; 0V or 10V static

EN1TPA

153J15-4 RTM ENCODER CHANNEL A

Dual Traction Motor TruckChannel A from the Right Traction Motor (RTM) encoder (EN1) to the TPA (JCT-13). If not present, check voltage to the encoder, wiring, and connections.

Approx. 5V running; 0V or 10V static

154J15-4 TM ENCODER CHANNEL A

Single Traction Motor TruckChannel A from the Traction Motor (TM) encoder (EN1) to the TPA (JT6-3). If not present, check voltage to the encoder, wiring, and connections.

Approx. 5V running; 0V or 10V static

155J15-5 GND

Ground from the VM (J34-6) to the TM temperature switch (TS1). If not present, check the VM, wiring, and connections.

Battery voltage wrt BT1+

156J15-6 RTM TEMP SW (TS1)

Dual Traction Motor TruckInput to the VM (J34-26) from the RTM temperature switch (TS1). Input will be low under normal operating conditions. If overtemp condition exists [>266°F (130°C)], input will be high. Allow to cool. If still open (high), check the switch, wiring, and connections.

Approx. 0V closed; 5V open

157J15-6 TM TEMP SW (TS1)

Single Traction Motor TruckInput to the VM (J34-27) from the TM temperature switch (TS1). Input will be low under normal operating conditions. If overtemp condition exists [>266°F (130°C)], input will be high. Allow to cool. If still open (high), check the switch, wiring, and connections.

Approx. 0V closed; 5V open

Publication 1160093, Issued: 20 May 2013 8-25

Section 8.Theory of Operation

Model 4700 Maintenance Manual

Pinout MatrixAll Dual Traction Motor Trucks and Single Traction Motor Trucks <S/N10677

158J15-7 thru 9NOT USED

159J16-1+12V+12V to the Left Traction Motor (LTM) encoder (EN2) from the TPA (JCT-11). If not present, check the TPA, wiring, and connections.

160J16-2 GND Ground to the Left Traction Motor (LTM) encoder (EN2) from the TPA (JCT-12). If not present, check the TPA, wiring, and connections.

161J16-3 LTM ENCODER CHANNEL B Channel B from the Left Traction Motor (LTM) encoder (EN2) to the TPA (JCT-23). If not present, check voltage to the encoder, wiring, and connections.

162J16-4 LTM ENCODER CHANNEL A Channel A from the Left Traction Motor (LTM) encoder (EN2) to the TPA (JCT-22). If not present, check voltage to the encoder, wiring, and connections.

163J16-5 GND Ground from the VM (J34-6) to the LTM temperature switch (TS2). If not present, check the VM, wiring, and connections.

164J16-6 LTM TEMP SW (TS2)

Input to the VM (J34-27) from the LTM temperature switch (TS2). Input will be low under normal operating conditions. If overtemp condition exists [>266°F (130°C)], input will be high. Allow to cool. If still open (high), check the switch, wiring, and connections.

Battery voltage wrt BT1+ TPAEN2

Approx. 5V running; 0V or 10V static

Approx. 5V running; 0V or 10V static

EN2TPA

EN2TPA

Battery voltage wrt BT1+ VMTS2

Approx. 0V closed; 5V open TS2VM

165J16-7 thru 9NOT USED

166J20-1 SEAT Input from the Seat switch (SW2). If not present, check the seat switch, jumper at J22-A3 and J22-A4, wiring, and connections.

167J20-2 NOT USED

168J20-3 +V OUTB+ from TPA to Seat switch (SW2). If not present, check the seat switch, battery interlock switch (SW30), jumper at J22-A3 and J22-A4, wiring, and connections.

169J23-1 +V OUT Dual Traction Motor TruckVoltage from TPA to Battery Interlock switch (SW30). If not present, check TPA, switch, wiring, and connections.

SW2TPA

TPASW30, SW2

Publication 1160093, Issued: 20 May 2013