Model 6210 Maintenance Manual

Pinout Matrix

The pinout matrix chart lists functions and normal voltages of terminals and harness connector pins. The matrix columns have the following meanings:

1. Item #: sequential number to aid in reference.

2. Connection: the actual wire numbers or component abbreviations on the electrical schematic. Refer to the schematic package for these trucks.

3. Function Description: brief definition of the connection.

Section 8.Theory of Operation

4. Theory of Operation: a.A detailed description of the connection. If the voltage is variable, it indicates the state of a related component causing the voltage to vary. b.Identifies possible causes for lack of correct voltage.

5. Normal Level: the approximate voltage that should be seen on the wire for the state indicated. Unless otherwise indicated, voltages are measured with respect to (wrt) B– at TP4.

6. Voltage Source: the device or connection that supplies the voltage directly to the wire.

7. Voltage User: the device or connection that the wire directly delivers the voltage to.

1TA B+B+ Power to Traction

B+ from MPC to Traction Amp used to produce the AC phases U, V, and W when the MPC contactor is closed to power the Traction Motor.

<

VDC wrt B–

De-energized: B+

Lower Request: Varies proportionally from 24VDC to 0VDC at full lower.

Key

Switch (SW1) TA

TASOL-2

Publication: 1146947, Revised: 12 Jan 2017 8-9