The **UDS-CB-R/E2** is an expansion communication board primarily used with **Yaskawa** industrial AC drives (inverters), such as the GA700, GA800, or A1000 series. It is specifically designed to facilitate communication via the **CANopen** protocol. --- ### 1. Technical Specifications The following table outlines the key electronic and functional characteristics of the board: | Feature | Specification | | :--- | :--- | | **Model Number** | UDS-CB-R/E2 | | **Protocol** | CANopen | | **Communication Speed** | 10 kbps to 1 Mbps (Auto-detect or Manual) | | **Connection Port** | 5-pin Open Connector (Pluggable) | | **Drive Interface** | Internal Option Port Connector (CN5) | | **Compliance** | CiA 301 (Application Layer), CiA 402 (Drive Profile) | --- ### 2. Major Electronic Components While the internal circuitry is proprietary to Yaskawa, the board architecture consists of several critical electronic sections: * **CAN Transceiver:** A high-speed IC (Integrated Circuit) that converts digital signals from the microprocessor into differential signals used by the CAN bus. * **Microcontroller (MCU):** An onboard processor that manages the CANopen stack, object dictionary (SDOs/PDOs), and translates commands to the host drive. * **Optical Isolation:** Provides galvanic isolation between the communication bus and the inverter's internal electronics to prevent damage from ground loops or high-voltage surges. * **LED Status Indicators:** * **RUN (Green):** Indicates the state of the CANopen state machine. * **ERR (Red):** Indicates communication errors or hardware faults. --- ### 3. Pinout Configuration The 5-pin terminal block is standard for CANopen interfaces: | Pin | Label | Description | | :--- | :--- | :--- | | 1 | **V-** | CAN Ground (Common) | | 2 | **CAN_L** | CAN Low Signal | | 3 | **Shield** | Cable Shield Connection | | 4 | **CAN_H** | CAN High Signal | | 5 | **V+** | External Power Supply (Optional for some networks) | --- ### 4. Installation Requirements * **Termination:** A 120Ω resistor must be applied across `CAN_H` and `CAN_L` if the board is at either end of the network trunk. * **Grounding:** The shield wire must be connected to a high-quality earth ground to minimize electromagnetic interference (EMI) from the AC drive.