公开(公告)号：US20220253019A1

公开(公告)日：2022-08-11

申请号：US17172122

申请日：2021-02-10

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Mark T. Ortell ,  Kevin J. Riederer ,  Aleksey Yegorov ,  Sawyer J. Desotelle

IPC: G05B9/02 ,  B60W10/08 ,  B60W10/196

Abstract: An improved system and method for providing safety-rated operation of a motor and motor drive controlling operation of a load with stored potential energy includes a two-channel method of monitoring and retaining control of the load. A first safety channel is configured to control operation of a holding brake, which provides sufficient holding force to retain the stored potential energy in the load. A second safety channel is configured to independently enable and disable torque production from the motor drive controlling operation of the motor. When torque production from the motor drive is enabled, the motor drive and motor are able to provide sufficient torque to retain the stored potential energy in the load. Monitoring and subsequent control of each safety channel is provided to ensure that a single failure in either channel will not cause the unexpected release of the stored potential energy from the load.

公开(公告)号：US11211851B2

公开(公告)日：2021-12-28

申请号：US16409027

申请日：2019-05-10

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Arun K. Guru ,  Xiaobo Peng ,  Robert H. Schmidt ,  Aleksey Yegorov

IPC: H02K11/27 ,  H02P6/12 ,  H02P6/22 ,  H02P3/00

Abstract: A motor drive utilizes redundant current feedback to monitor force being produced by a motor and to provide safe limited force producing operation of the motor. A first set of current sensors provides a first current measurement, and a second set of current sensors provides a second current measurement. The two current measurements are provided to two diverse force producing calculations, where each force producing calculation provides a value of the force produced by the motor. The motor drive compares the output of the two algorithms to each other. If the output of the two force producing calculations is the same, within an acceptable band, the controller continues operating as commanded. If the output of the two force producing calculations differs beyond the acceptable band, then the controller may generate a fault message provided back to a central controller, stop operation of the motor, or a combination thereof.

公开(公告)号：US11815885B2

公开(公告)日：2023-11-14

申请号：US17172122

申请日：2021-02-10

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Mark T Ortell ,  Kevin J. Riederer ,  Aleksey Yegorov ,  Sawyer J. Desotelle

IPC: G05B9/02 ,  H02P3/26 ,  G05B19/406

CPC classification number: G05B9/02 ,  H02P3/26 ,  G05B19/406

Abstract: An improved system and method for providing safety-rated operation of a motor and motor drive controlling operation of a load with stored potential energy includes a two-channel method of monitoring and retaining control of the load. A first safety channel is configured to control operation of a holding brake, which provides sufficient holding force to retain the stored potential energy in the load. A second safety channel is configured to independently enable and disable torque production from the motor drive controlling operation of the motor. When torque production from the motor drive is enabled, the motor drive and motor are able to provide sufficient torque to retain the stored potential energy in the load. Monitoring and subsequent control of each safety channel is provided to ensure that a single failure in either channel will not cause the unexpected release of the stored potential energy from the load.