The utility model provides an electrical control system of a swinging device. The system comprises a PLC controller, a servo motor, an operation panel, an upper computer, an encoder 1, an encoder 2, aproximity switch and an AC/DC power supply. By adopting the integrated servo motor, the installation space is saved, the connection line between the motor and the driver is simplified, the product returns to the central axis and is controlled by adopting a PID algorithm, and the product returns to the central axis at a planned deceleration. And the system is high in integration degree, adopts a modular pluggable design, and is easy to maintain and replace. Rolling and swinging actions are interlocked and protected by hardware and software, only one action can be performed at the same time, misoperation is avoided, and operation is more user-friendly.