| Presentation | 2003/11/14 Study on the Safety Evaluation Method of the Power Reed Switch : Estimation on the Occurrence Probability of Failure to Danger based on Field Data (Session 5 : Switching devices) Kenjiro HAMADA, Yoichi WAKABAYASHI, Shigeo UMEZAKI, Shigenobu KOBAYASHI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Reliability characteristics are part of the index for Safety Evaluation. For this index, an object is judged based on its oriented failure characteristics. The magnetically actuated power reed switch can exhibit just such failure characteristics when it does fail making it a good candidate on the evaluation index for reliability. It has become a key element in the most stringent category of safety control systems due to the switch offering very high non-contact reliability and fail-safe operation in even the harshest industrial environments subject to electrical surge and noise. The result of the occurrence probability of failure to danger is 2.0 × 10^<-10> (number/hour) from the initial field data observed. In view of these facts, switch redundancy and compatibility checking must be done in order to achieve the desired value of probability to failure rate and it is in this vein that the authors make a proposal. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Safety / Reliability / Power Reed Switch / Magnetic Sensor / Failure Rate to Danger |
| Paper # | EMD2003-83 |
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| Conference Information | |
| Committee | EMD |
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| Conference Date | 2003/11/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Electromechanical Devices (EMD) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study on the Safety Evaluation Method of the Power Reed Switch : Estimation on the Occurrence Probability of Failure to Danger based on Field Data (Session 5 : Switching devices) |
| Sub Title (in English) | |
| Keyword(1) | Safety |
| Keyword(2) | Reliability |
| Keyword(3) | Power Reed Switch |
| Keyword(4) | Magnetic Sensor |
| Keyword(5) | Failure Rate to Danger |
| 1st Author's Name | Kenjiro HAMADA |
| 1st Author's Affiliation | YASKAWA Controls Co., Ltd.() |
| 2nd Author's Name | Yoichi WAKABAYASHI |
| 2nd Author's Affiliation | YASKAWA Controls Co., Ltd. |
| 3rd Author's Name | Shigeo UMEZAKI |
| 3rd Author's Affiliation | National Institute of Industrial Safety, Independent Administrative Institution |
| 4th Author's Name | Shigenobu KOBAYASHI |
| 4th Author's Affiliation | National Institute of Industrial Safety, Independent Administrative Institution |
| Date | 2003/11/14 |
| Paper # | EMD2003-83 |
| Volume (vol) | vol.103 |
| Number (no) | 449 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |