| ??? 12/10/04 14:37 Read: times |
#82895 - Does it mean? Responding to: ???'s previous message |
when this switch is frequently used to on/off contactor,mcu start detecting wrong input, Do you mean that you use the manual switch to turn on/off the main contactor when it has been turned on by the MCU? There must be some inductive load driven through main contactor??? MCUs often go crazy (if not designed and handeled properly) in the vicinity of inductive load switching. Do you have an RC snubber circuit accross the winding of magnetic contactor? Go through the following thread, it might be helpful. http://www.8052.com/forum/read.phtml?id=80577 |
| Topic | Author | Date |
| 440v ac routing problem | 01/01/70 00:00 | |
| OK | 01/01/70 00:00 | |
| Every thing already done... | 01/01/70 00:00 | |
| language, guessing | 01/01/70 00:00 | |
| language, guessing | 01/01/70 00:00 | |
| Trapped ? | 01/01/70 00:00 | |
| first project | 01/01/70 00:00 | |
| debounce or noise | 01/01/70 00:00 | |
| contactor wiring | 01/01/70 00:00 | |
| guesses | 01/01/70 00:00 | |
| debounce or noise | 01/01/70 00:00 | |
| Does it mean? | 01/01/70 00:00 | |
| all done | 01/01/70 00:00 | |
| all done? | 01/01/70 00:00 | |
| 440v ac routing problem | 01/01/70 00:00 | |
| Snubbers? | 01/01/70 00:00 | |
| hi all i find the cause of problem | 01/01/70 00:00 | |
| enclosure ? | 01/01/70 00:00 | |
| enclosure ? | 01/01/70 00:00 | |
| Search, Search Search more and more..... | 01/01/70 00:00 | |
| box | 01/01/70 00:00 | |
| hiding info | 01/01/70 00:00 | |
hiding info | 01/01/70 00:00 |