4000 Switch Machine - Alstom

Electrical WiringThe switch machine has internal electrical wiring that integrates the switch machine components(switches, amplifier, LEDs, and motor) and field wiring requirements that are performed basedupon location specific conditions (supplied motor power, indication circuits, and controlcircuits). The switch machine’s internal wiring is completed in the factory with a wiring harnessand watertight connectors. Figure 3-4 identifies the internal wiring components of the GM4000switch machine. The internal wiring schematic is in Appendix A.Field WiringField wiring associated with motor power, control, and indications enter the switch machinethrough a wire entrance fitting located at either end of the switch machine (motor or detectorcompartment).Motor Power - Field wiring for motor power is connected to posts at terminal TB1 in accordancewith the detail wiring plans that apply to the location. Typical power circuits are in Appendix A.Control - Field wiring for switch machine control is connected to posts at terminal TB1 inaccordance with the detail wiring plans that apply to the location. Typical power circuits are inAppendix A.Indications - Field wiring for point-detector provided indications are connected to posts onterminals TB1, TB2, and TB3 in accordance with the detail wiring plans that apply to thelocation. Typical indication circuits are in Appendix A.P2444, Rev. Jan/07 3-5ALSTOM Signaling Inc.