METHOD AND PROTECTION DEVICE FOR PROTECTING AN ELECTRIC MOTOR AND/OR AN OPERATING MACHINE WHICH IS COUPLED THERETO FROM INCORRECT CONTROL OPERATIONS
First Claim
1. A method for protection of an electric motor and/or an operating machine which is coupled thereto from incorrect control operations, wherein the number of incorrect control operations of the electric motor and/or the operating machine is detected in accordance with a first error criterion and the number of incorrect control operations of the electric motor and/or the operating machine is detected in accordance with a second error criterion and totalled, wherein an alarm signal is produced and/or the electric motor is switched into a predefined state when the total of the incorrect control operations detected exceeds a predetermined limit.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for protection of an electric motor and/or operating machine coupled thereto from incorrect control operations detects the number of incorrect control operations of the electric motor and/or the operating machine in accordance with first and second error criterions. The numbers are totalled, and an alarm signal is produced and/or the electric motor is switched into a predefined state when the total exceeds a predetermined limit. A protection device for protecting an electric motor and/or an operating machine coupled thereto from incorrect control operations is also disclosed for carrying out the method.
6 Citations
15 Claims
- 1. A method for protection of an electric motor and/or an operating machine which is coupled thereto from incorrect control operations, wherein the number of incorrect control operations of the electric motor and/or the operating machine is detected in accordance with a first error criterion and the number of incorrect control operations of the electric motor and/or the operating machine is detected in accordance with a second error criterion and totalled, wherein an alarm signal is produced and/or the electric motor is switched into a predefined state when the total of the incorrect control operations detected exceeds a predetermined limit.
-
14. A protection device for protecting an electric motor and/or an operating machine which is coupled thereto from incorrect control operations having
a first detection unit for incorrect control operations of the electric motor and/or the operating machine in accordance with a first error criterion, at least a second detection unit for incorrect control operations of the electric motor and/or the operating machine in accordance with a second error criterion, a totalling member for totalling the number of incorrect control operations and an actuation unit for producing an alarm signal and/or for switching the electric motor into a predefined state when the total of the incorrect control operations detected exceeds a predetermined limit.
Specification