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实用新型
CN202586837U 电机群自重启PLC控制装置 失效 - 权利终止

电机群自重启PLC控制装置
摘要：
本实用新型公开了电机群自重启PLC控制装置，包括控制单元、信号整形变换单元和人机交互界面装置；所述的控制单元包括可编程控制器PLC、模数转换电路AD、开关量输入电路DI和开关量输出电路DO；可编程控制器PLC与人机交互界面装置相连接；开关量输入电路DI、开关量输出电路DO分别与电机群的接触器相连接；模数转换电路AD与信号整形变化单元的一端相连接，信号整形变换单元另一端通过电压互感器PT、电流互感器CT与电机群的通电母线相连接。本实用新型能进行可靠的控制，结构简单，操作容易，维护方便，运行可靠，可查询事故记录，实现了群控制、自动控制、分批控制，为电机运行提供可靠保证。
摘要（英）：

The utility model discloses a motor group self restart PLC control device comprising a control unit, a signal shaping and converting unit and a man-machine interaction interface device. The control unit comprises a programmable controller (PLC), an analog-to-digital conversion circuit (AD), a switch quantity input circuit (DI) and a switch quantity output circuit (DO). The programmable controller (PLC) is connected with the man-machine interaction interface device. The switch quantity input circuit (DI) and the switch quantity output circuit (DO) are respectively connected with a contactor of a motor group. The analog-to-digital conversion circuit (AD) is connected with one end of the signal shaping and converting unit, and the other end of the signal shaping and converting unit is connected with an electric bus of the motor group through a voltage transformer (PT) and a current transformer (CT). According to the motor group self restart PLC control device, reliable control can be carried out, structure is simple, operation is easy, maintenance is convenient, operation is reliable, accident records can be inquired, group control, automatic control and batch control are realized, and a reliable guarantee is provided for motor operation.

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