Model 6210 Maintenance Manual

15JP1-21CAN TERM HCAN Bus te rminating resistor installed inside the TA. If not connected, intermittent communication codes will be displayed.

16JP1-23BUS +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.

17JP1-25(+) 12V OUTSupplies 12VDC to the Traction Motor Encoder (TME) and switch SW2 through SPL6.

18JP1-31T Vel Phase AGenerated 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.

19JP1-32T Vel Phase BGenerated 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.

20JP1-33Brake OverrideInput from the Brake Override Switch SW3 when closed. When the switch is closed, the TA will release the brake and not allow travel.

21JP1-34CAN Term LCAN Bus terminating resistor installed inside the TA. If not connected, intermittent communication codes will be displayed.

Section 8.Theory of Operation Pinout Matrix

2.5VDCTACAN Bus

12VDCTASW2 and TME

At Rest: Either 4.7VDC or 0.03VDC During Motion: Approx. 2.5VDC

At Rest: Either 4.7VDC or 0.03VDC During

Motor Encoder

Open: 0VDC Closed: B+

2.5VDCTACAN Bus

Publication: 1146947, Revised: 12 Jan 2017 8-11