Control interface for customer replaceable fan unit
    10.
    发明公开
    Control interface for customer replaceable fan unit 失效
    美国宾夕法尼亚州

    公开(公告)号:EP0690366A1

    公开(公告)日:1996-01-03

    申请号:EP95303397.4

    申请日:1995-05-22

    CPC classification number: G05B9/03

    Abstract: A fault-tolerant control and monitoring system for fan assemblies used in electronic equipment. The fan control and monitoring system of the present invention reduces the probability of high temperature damage due to power failure by using a power mixing circuit that provides redundant power to the fans. The system includes means for detecting faults in the power mixing circuit. The system of the present invention further includes means for measuring the exact speed of the fans, as well as means for finer control of fan speed. Physical presence of fan unit is detected without additional pin requirements.

    Abstract translation: 风扇监视和控制系统包括功率混合电路,其具有分别用于接收第一和第二电力轨的第一和第二输入,第一对电力轨使能输入和第二对电力轨使能输入, 第一对电源轨状态输出和第二对电源轨状态输出,以及电源输出。 风扇单元具有耦合到功率混合电路的功率输出的功率输入,速度控制输入和速度指示器输出。 第一控制板具有耦合到风扇单元的速度指示器输出的风扇速度指示器输入以及耦合到功率混合电路的第一对电力轨状态输出的一对电力轨状态输入。 一对电力轨使能输出分别耦合到功率混合电路的第一对电力轨使能输入,并且速度控制输出耦合到风扇单元的速度控制输入。 还包括第二个控制板。

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