| 摘要 |
PROBLEM TO BE SOLVED: To enable shortening response time even in the case a signal processor s constituted of a microprocessor, by providing a drive means constituted of semiconductor element for scramming the reactor based on a scram signal. SOLUTION: A drive means 6 is constituted of semiconductor elements. Signal processing is performed as follows, for example. The signals of a switch group 14A placed in the central control room side are taken in a transmission circuit 12A and these signals are multiplexed to transmit to the reception circuit 11A in the plant site side. The output signal of the reception circuit 11A is given to switching circuits 13A11 to 13Ai1 and 13Ai2 provided for functioning each of scram electromagnetic valves VA1 to VAi . That is, the reception circuit 11A detects a command to quickly insert a certain control rods among the received transmission signals and drives the corresponding switching circuits 13A11 , 13A12 to 13Ai1 and 13Ai2 . When the generation of sign error is detected with the reception circuit 11A by providing the reception circuit 11A with a sign error checking function, a resending request signal is transmitted to the transmission circuit 12A and a transmitting repetition means in multiplex communicator is provided. |
