Safety device and method for an automatically operating installation having at least one moveable part
AssigneePilz GmbH & Co. KG
InventorsChristoph Weishaar, Gerhard Betz
Life of this patent
Estimating the term…
Abstract
A safety device for an automatically operating installation determines at least one movement variable of a moving installation part in a safety-related manner. The safety device includes an acceleration sensor and an evaluation unit. The acceleration sensor is adapted to be coupled to the moving installation part in order to detect any acceleration of the moving installation part. The evaluation unit determines a movement velocity and/or a movement travel of the installation part on the basis of the acceleration.
Claims16
An automatically operating installation comprising at least one installation part which is moved in an automated manner, comprising a control unit designed to control the movements of the installation part, and comprising a safety device which is designed to determine at least one movement variable of the installation part in a safety-related manner, said safety device comprising at least one acceleration sensor and an evaluation unit, wherein the acceleration sensor is adapted to be coupled to the moving installation part for detecting any acceleration of the moving installation part, and wherein the evaluation unit is designed to determine at least one of a movement velocity and a movement travel of the installation part on the basis of the acceleration detected by the acceleration sensor.
The installation of claim 2, wherein the moving installation part is a tool moving like a stamp.
A safety device for fail-safely determining at least one movement variable of a moving part of an automatically operating installation, the safety device comprising at least one acceleration sensor and an evaluation unit, wherein the acceleration sensor is adapted to be coupled to the moving installation part for fail-safely detecting an acceleration of the moving installation part, and wherein the evaluation unit is designed to fail-safely determine at least one of a movement velocity and a movement travel of the installation part on the basis of the acceleration.
A method for safety-related stopping of a moving part of an automatically operating installation, comprising the steps of:
- fail-safely determining a movement variable of the moving part,
- fail-safely comparing the determined movement variable with a predefined reference value, and
- fail-safely stopping the moving part as a function of the determined movement variable and the defined reference value,
- wherein, in order to determine the movement variable, an acceleration of the moving part is first detected by means of an acceleration sensor, and
- wherein at least one of a movement velocity and a movement travel of the moving part is determined as the movement variable on the basis of the detected acceleration.
Dependencies are inferred from the claim text.