Safety switching device and modular failsafe control system
AssigneePilz GmbH & Co. KG
InventorRichard Veil
Life of this patent
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Abstract
A safety switching device for a modular failsafe control system for switching on and safely switching off an electrical load, having at least one switching element which is subject to wear and is designed to carry out a switching process by means of a control signal which is generated by the control system, in order to switch the electrical load, comprising an apparatus for detection of the number of switching processes carried out and having a memory apparatus for permanent failsafe storage of the detected number.
Claims16
A safety switching device for a modular failsafe control system for switching on and safely switching off an electrical load, having at least one switching element which is subject to wear and is designed to carry out a switching process by means of a control signal which is generated by the control system, in order to switch the electrical load, comprising a detection apparatus for detecting the number of switching processes carried out and having a memory apparatus for permanent failsafe storage of the detected number.
A modular failsafe control system for switching on and safely switching off an electrical load, in particular an electrically driven machine, via at least one switching device, having a control apparatus for evaluation of input signals and for production of a control signal, which is provided to the switching device, as a function of the evaluation, comprising a diagnosis parameter memory apparatus for storage of predeterminable switching process threshold values for the at least one switching device, and a diagnosis data analysis apparatus which is designed to compare the number of switching processes carried out by the switching device with the stored threshold values, and to initiate an action as a function of the comparison.
Dependencies are inferred from the claim text.