Method and apparatus for checking a speed system of a motor-driven apparatus
First Claim
Patent Images
1. A method for checking a speed system of a motor-driven apparatus, comprising:
- checking, with a control device, whether a speed signal generated by a speed sensor of the speed system is applied to a first input of the control device;
outputting a test signal at an output of the control device to the speed system if the control device determines that the speed signal is not applied to the first input of the control device; and
identifying a fault in the speed system, with the control device, if the outputted test signal is not sensed at the first input of the control device.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for checking a speed system of a motor-driven apparatus is proposed. In the absence of a speed signal, a first aspect provides for a control device to send a test signal via the speed system, the test signal being expected at an input of the control device. If the test signal is not detected, a fault in the speed system is identified.
-
Citations
15 Claims
-
1. A method for checking a speed system of a motor-driven apparatus, comprising:
-
checking, with a control device, whether a speed signal generated by a speed sensor of the speed system is applied to a first input of the control device; outputting a test signal at an output of the control device to the speed system if the control device determines that the speed signal is not applied to the first input of the control device; and identifying a fault in the speed system, with the control device, if the outputted test signal is not sensed at the first input of the control device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method for checking a speed system of a motor-driven apparatus, comprising:
-
switching on the motor-driven apparatus; detecting a motor current signal from the motor-driven apparatus with a motor current detection device of the speed system; detecting, with a control device, a speed signal generated by a speed sensor of the speed system at a first input of the control device; identifying a fault in the speed system if (i) the speed signal is not detected by the control device, and (ii) the control device determines that the motor current signal undershoots a defined level of motor current. - View Dependent Claims (12, 13)
-
-
14. A method for checking a speed system of a motor-driven apparatus, comprising:
-
checking, with a control device, whether a speed signal generated by a speed sensor of the speed system is applied to a first input of the control device; outputting a test signal at an output of the control device to the speed system if the control device determines that the speed signal is not applied to the first input of the control device; identifying a fault in the speed system, with the control device, if the outputted test signal is not sensed at the first input of the control device; recording a speed value of the motor-driven apparatus with a speed recording device of the speed system; and identifying a fault in the motor-driven apparatus, with the control device, if a defined speed value of the motor-driven apparatus has not been reached after a defined time. - View Dependent Claims (15)
-
Specification