| 摘要 |
PROBLEM TO BE SOLVED: To provide a failure diagnosis device for a control panel, capable of detecting abnormality sites of an electronic apparatus connected to the panel, using a simple circuit configuration. SOLUTION: The device is provided with a plurality of input terminals 11 for introducing potentials at either end of each relay contact of the panel, and a plurality of relays 12 each connected to the input terminals 11. A relay contact 14 is connected between a direct-current power source terminal 16 and an input terminal 15 of a sequencer 13, and each relay contact 14 is on/on-controlled by each relay 12. When a specific relay contact of the control panel is changed from on to off, the relay 12 connected to the input terminal 11 is changed from off to on, and the relay contact 14 on/off-controlled by the relay 12 is turned on. As a result of this, the signal for making a lamp 17 turned on is outputted from the sequencer 13 of the relay contact. COPYRIGHT: (C)2011,JPO&INPIT
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