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    • 5. 发明授权
    • Bad ground and reverse polarity detection for HVAC controls
    • HVAC控制器的接地和反极性检测错误
    • US09372219B2
    • 2016-06-21
    • US14169360
    • 2014-01-31
    • Emerson Electric Co.
    • John J. HellerJohn F. Broker
    • G01R31/02
    • G01R31/025
    • In exemplary embodiments, HVAC controls and corresponding error detection methods are disclosed. In an exemplary embodiment, an HVAC control generally includes a digital input configured to receive a digital signal, an analog input configured to receive an analog signal, and an error indicator. The control is configured to receive a neutral signal at the analog input, determine a voltage of the neutral signal with respect to earth ground, and operate the error indicator to indicate a normal state if the voltage is below a first threshold, a bad ground state if the voltage is between the first threshold and a second threshold, and a reverse polarity state if the voltage is above the second threshold.
    • 在示例性实施例中,公开了HVAC控制和相应的错误检测方法。 在示例性实施例中,HVAC控制通常包括被配置为接收数字信号的数字输入,被配置为接收模拟信号的模拟输入和误差指示符。 该控制被配置为在模拟输入处接收中性点信号,确定相对于接地的中性点信号的电压,并且如果电压低于第一阈值,接地状态不良则操作错误指示器指示正常状态 如果电压在第一阈值和第二阈值之间,并且如果电压高于第二阈值则为反极性状态。
    • 9. 发明申请
    • Performing Integrity Checks on Climate Control System Components
    • 对气候控制系统组件进行完整性检查
    • US20140134548A1
    • 2014-05-15
    • US13687346
    • 2012-11-28
    • EMERSON ELECTRIC CO.
    • John F. BrokerJohn J. Heller
    • F24H9/20G05D23/19
    • F24H9/2064F24F11/32
    • Exemplary embodiments are disclosed of a climate control system that includes an igniter and a controller having an igniter relay. The controller senses a current level through the igniter and senses voltage between terminals of a second relay of the controller. In a given one of a plurality of operational phases of the system, the controller is configured to compare the sensed current level and sensed voltage to a current level and voltage associated with a specific condition of the igniter, igniter relay, or second relay in the given phase. Based on a result of the comparing, the controller is configured to distinguish between a failure of one of the relays and a failure of the igniter.
    • 公开了包括点火器和具有点火器继电器的控制器的气候控制系统的示例性实施例。 控制器通过点火器感测电流水平并感测控制器的第二继电器的端子之间的电压。 在系统的多个操作阶段中的给定的一个中,控制器被配置为将感测到的电流电平和感测电压与当前电平和与点火器,点火继电器或第二继电器中的第二继电器的特定条件相关联的电压进行比较 给定阶段 基于比较的结果,控制器被配置为区分一个继电器的故障和点火器的故障。