| 摘要 |
<p>PURPOSE:To reduce the labor and time needed for the tests and adjustment by controlling the feed and cut-off of power of an output power supply unit with the output of a switch and the output of an AND circuit that secures an AND with the system normal signal. CONSTITUTION:A system switch 67 and an AND circuit 68 are provided to a system monitor part 6 and the outputs of monitor circuits 61-63 are led to the circuit 68. Then the output of the circuit 68 is supplied to a switch 51 as a power supply make/break signal 69. A power supply unit 4, a central arithmetic processor 1 and an output power supply unit 5 are working normally and the system normal signal is delivered with the switch 67 turned on. Under such conditions, the switch 51 is closed and the control signal is supplied to a process from an output device 3. While the feed is cut off to the device 3 from the unit 5 if the switch 67 is turned off despite a system normal state where the circuits 61-63 are all delivering the normal signals.</p> |
