Rockwell Automation Technologies Incorporated

Eaton Corporation

Joseph Daniel Riley

Alan J Campbell

Matthew Wilbur Naiva

Mark Alan Verheyen

Michael W Wielebski

William A Bartz

Chris K Radtke

Mark F Pieronek

A tamper detection apparatus includes a switch and a tamper detection circuit with a non-volatile memory in an industrial product enclosure. In response to the switch detecting a door or panel of an industrial product enclosure being open when an electronic component or system in the enclosure is unpowered, the tamper detection circuit stores a tamper event code in the non-volatile memory. After the electronic component or system is powered, a system processor obtains the tamper event code from the tamper detection circuit and refrains from operating a machine or process pending reset of the industrial product by a user.

Method and apparatus for industrial product tamper detection

Control circuitry of a motor drive provides commands for operation of power circuitry in cooperation with peripheral circuits and devices, such as converters, inverters, feedback precharge circuits, feedback devices, interfaces, and so forth. The communications with the devices is handled by fiber optic communications circuitry that implements a flexible scheme of dynamic interval communication depending upon the capabilities and design of the peripheral circuit or device. The communication may be in accordance with a plurality of predetermined schemes, each having different data transfer rates, data allocations, and so forth. The schemes may each set communications protocols (e.g., timing) over a high speed interface between the fiber optic communications circuitry on one side and over fiber optic cables to the peripherals on another side.

Motor drive with dynamic interval communication

Disclosed examples provide control boards with power systems that include a safety system with a protection circuit to selectively connect or disconnect first and second DC to DC converters to or from a DC input signal according to the DC input signal and a monitor signal, and a monitor circuit to provide the monitor signal according to the first and second DC to DC converter output signals.

Safety system for motor drive

An improved overload relay includes a number of current transformers that draw power from a circuit it protects to power itself. The current transformers charge a capacitor which powers a processor and which can energize a solenoid to initiate the interruption of the circuit. The overload relay further includes a capacitor analysis circuit which detects an operational parameter of the capacitor and enables a processor to determine when the energy storage capability of the capacitor has dropped to a predetermined threshold. In the event of such a determination, the overload relay can perform any of a number of actions.

Growing community of inventors

Grafton, WI, United States of America

Joseph Daniel Riley