Model 6210 Maintenance Manual
Section 8.Theory of Operation Pinout Matrix
Item
Connection
Functional Description
Voltage Source
Voltage User
15
JP1-21
CAN TERM H
CAN Bus terminating resistor installed inside the TA. If not connected, intermittent communication codes will be displayed.
2.5VDC
TA
CAN Bus
16
JP1-23
BUS +
Carries the positive component of the digital communications between the TA, VM, Service Port, and the Battery Charger through SPL2. If this connection is missing, the TA cannot communicate with the other devices. Troubleshoot using resistance checks. No useful information can be gained by measuring the voltage on this wire.
2.4VDC
TA
VM, Service Port, and Battery Charger
17
JP1-25
(+) 12V OUT
Supplies 12VDC to the Traction Motor Encoder (TME) and switch SW2 through SPL6.
12VDC
TA
SW2 and TME
18
JP1-31
T Vel Phase A
Generated when there is movement of the Traction Motor. It is a square wave that is either high (>4VDC) or low (<1VDC). Frequency varies directly with the speed of the Traction Motor and the TA uses it to determine travel speed. Identical formation to T Vel Phase B except for the phasing between the two. The VM uses the quadrature phase relationship between Phases A and B to determine travel direction.
At Rest: Either 4.7VDC or 0.03VDC During Motion: Approx. 2.5VDC
Traction Motor Encoder
TA
19
JP1-32
T Vel Phase B
Generated when there is movement of the Traction Motor. It is a square wave that is either high (>4VDC) or low (<1VDC). Frequency varies directly with the speed of the Traction Motor and the TA uses it to determine travel speed. Identical formation to T Vel Phase A except for the phasing between the two. The VM uses the quadrature phase relationship between Phases A and B to determine travel direction.
At Rest: Either 4.7VDC or 0.03VDC During Motion: Approx. 2.5VDC
Traction Motor Encoder
TA
20
JP1-33
Brake Override
Input from the Brake Override Switch SW3 when closed. When the switch is closed, the TA will release the brake and not allow travel.
Open: 0VDC Closed: B+
SW3
TA
21
JP1-34
CAN Term L
CAN Bus terminating resistor installed inside the TA. If not connected, intermittent communication codes will be displayed.
2.5VDC
TA
CAN Bus
Theory of Operations
Publication: 1146947, Revised: 12 Jan 2017
Normal Level
8-11
