| 摘要 |
PURPOSE:To conduct accurate and reliable operation monitor in an electric power plant by installing an alarm monitor and display equipment flickering correspondently to the difference between an analog setting value and an analog signal and an alarm device generating intermittent tones to an operation monitor and alarm equipment. CONSTITUTION:An analog signal 12-1 is inputted to a comparator 13-A to compare it with a set value set up by a setter 13-B and the difference between the analog signal and the set value is outputted. A signal 14-1 indicating the degree of the compared faults is fed to an A/D converter 15-1. The output signals of the converter 15-1 are inputted to alarm monitoring equipment 17-1...17-n as square wave signals 16-1...16-n and flickering alarm minitoring signals are displayed. At the same time, the signals 16-1...16-n are inputted an alarm device 18 and intermittent alarm tones are generated. |
