FIELD DEVICE LATCHING RELAY RESET

An industrial process field device includes an active component, a latching relay, a controller, a relay drive, and a reset circuit. The active component may be a sensor configured to sense a processparameter, or a control device configured to control a process of the industrial process. The controller is configured to generate a switch signal, and the relay drive is configured to set the latching relay in one of a set state and a reset state based on the switch signal. The reset circuit is configured to set the latching relay to the reset state in response to an interruption of electrical power to the relay drive. 一种工业过程现场设备包括有源组件、锁存继电器、控制器、继电器驱动器和复位电路。有源组件可以是被配置为感测过程参数的传感器，或者被配置为控制工业过程的过程的控制设备。控制器被配置为产生开关信号，并且继电器驱动器被配置为基于开关信号将锁存继电器设置为置位状态和复位状态之一。复位电路被配置成响应于到继电器驱动器的电力中断而将锁存继电器设置为复位状态。