Abstract: A safety input system for monitoring a sensor can include a voltage sensing circuit configured to produce a first detection output upon sensing a signal exceeding a voltage threshold, and a current sensing circuit configured to produce a second detection output upon sensing the signal exceeding a current threshold and/or voltage threshold. The signal can come from a sensor in an industrial automation system, such as a light curtain. The first detection output can be provided to a first processor, and the second detection output can be provided to a second processor, so that two processors can independently monitor the sensor. The signal can be monitored by separate input systems. Periodically the first processor can inject a first test signal into the input system for the second processor to detect, and the second processor can inject a second test signal into the input system for the first processor to detect.

Abstract: Disclosed is an industrial automation control system, method and apparatus and method of operation including a diagnostic domain subsystem powered by an energy storage subsystem. According to an exemplary embodiment, a diagnostic domain subsystem is configured to perform diagnostics of one or more conditions associated with a functional domain subsystem, where the energy storage subsystem powers the diagnostic subsystem during a normal mode of operation and the energy storage subsystem powers the diagnostic domain and functional domain during a power failure mode and/or power cycling mode.

Abstract: An overvoltage protector uses a low-power shunt regulator to provide precise overvoltage protection at low voltages. The shunt regulator communicates with the current limiter to the input voltage allowing precise current measurement while protecting the shunt regulator from excessive power consumption.

Abstract: A safety input system for monitoring a sensor can include a voltage sensing circuit configured to produce a first detection output upon sensing a signal exceeding a voltage threshold, and a current sensing circuit configured to produce a second detection output upon sensing the signal exceeding a current threshold and/or voltage threshold. The signal can come from a sensor in an industrial automation system, such as a light curtain. The first detection output can be provided to a first processor, and the second detection output can be provided to a second processor, so that two processors can independently monitor the sensor. The signal can also be monitored by separate input systems. Periodically, for additional protection, the first processor can inject a first test signal into the input system for the second processor to detect, and the second processor can inject a second test signal into the input system for the first processor to detect.

Abstract: Disclosed is an industrial automation control system, method and apparatus and method of operation including a diagnostic domain subsystem powered by an energy storage subsystem. According to an exemplary embodiment, a diagnostic domain subsystem is configured to perform diagnostics of one or more conditions associated with a functional domain subsystem, where the energy storage subsystem powers the diagnostic subsystem during a normal mode of operation and the energy storage subsystem powers the diagnostic domain and functional domain during a power failure mode and/or power cycling mode.

Abstract: This disclosure provides an automation controller method, system and apparatus including a redundant watchdog utilizing a safety partner controller. According to an exemplary controller, the controller includes a first processing unit, a second processing unit, and an integrated circuit configured to receive as inputs fault indicator signals from the first and second processing units, and the integrated circuit configured to disable I/O communications for a fault condition detected by the first or second processing units.

Abstract: Disclosed is an industrial automation control system, method and apparatus and method of operation including a diagnostic domain subsystem powered by an energy storage subsystem. According to an exemplary embodiment, a diagnostic domain subsystem is configured to perform diagnostics of one or more conditions associated with a functional domain subsystem, where the energy storage subsystem powers the diagnostic subsystem during a normal mode of operation and the energy storage subsystem powers the diagnostic domain and functional domain during a power failure mode and/or power cycling mode.

Abstract: overvoltage protector uses a low-power shunt regulator to provide precise overvoltage protection at low voltages. The shunt regulator communicates with the current limiter to the input voltage allowing precise current measurement while protecting the shunt regulator from excessive power consumption.

Abstract: This disclosure provides an automation controller method, system and apparatus including a redundant watchdog utilizing a safety partner controller. According to an exemplary controller, the controller includes a first processing unit, a second processing unit, and an integrated circuit configured to receive as inputs fault indicator signals from the first and second processing units, and the integrated circuit configured to disable I/O communications for a fault condition detected by the first or second processing units.

Abstract: This disclosure provides an automation controller method, system and apparatus including a redundant watchdog utilizing a safety partner controller. According to an exemplary controller, the controller includes a first processing unit, a second processing unit, and an integrated circuit configured to receive as inputs fault indicator signals from the first and second processing units, and the integrated circuit configured to disable I/O communications for a fault condition detected by the first or second processing units.

Abstract: Disclosed is an industrial automation control system, method and apparatus and method of operation including a diagnostic domain subsystem powered by an energy storage subsystem. According to an exemplary embodiment, a diagnostic domain subsystem is configured to perform diagnostics of one or more conditions associated with a functional domain subsystem, where the energy storage subsystem powers the diagnostic subsystem during a normal mode of operation and the energy storage subsystem powers the diagnostic domain and functional domain during a power failure mode and/or power cycling mode.

Abstract: This disclosure provides an automation controller method, system and apparatus including a redundant watchdog utilizing a safety partner controller. According to an exemplary controller, the controller includes a first processing unit, a second processing unit, and an integrated circuit configured to receive as inputs fault indicator signals from the first and second processing units, and the integrated circuit configured to disable I/O communications for a fault condition detected by the first or second processing units.