The GE Power Excitation Board DS200RTBAG4RHC is an optional board that is installed in the drive cabinet and it features ten relays that are driven either directly from the pilot relays or remotely by the user. The DS200RTBAG4RHC board has multiple jumpers that enable you to control the behavior of the board, wire connectors for pluggable circuits, cable connectors, ribbon cables, and stab connectors for pluggable circuit power.
Before you disconnect any cables or wires, it is vital that you note where all the wires and cables are connected on the defective board. Make labels that indicate where a cable or wire is connected before you disconnect it. The connectors all have identifiers on the board and they provide a precise and easy means of identification.
Ribbon cables are especially fragile and require that you understand the proper procedure to connect and disconnect them. The thin wires that make up each signal on the ribbon cable is easily damaged and can be disconnected from the connector. Hold the ribbon cable only from the connector with one hand and hold the connector on the board with the other hand. Pull them apart to disconnect.
The RTB terminals on the board are held in place with small screws that hold the terminals securely. To unfasten them, use a screwdriver to loosen the screw and pull out the wire. Don’t remove the screw entirely from the terminal but do leave it in the terminal. If it does fall out retrieve it so that it doesn’t get lost in the drive.