| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable restart only in the case of shut-down caused by power failure by automatically performing restart by turning on an AC power source output when the shut-down caused by the power failure is discriminated at the time of power failure state cancel at an uninterruptible power supply(UPS) due to power failure recovery. SOLUTION: A register part 9 is provided with a UPS status flag 5. A system control means 8 is provided with a recording control means for recording the state of a UPS 3 in the UPS status flag 5 and a monitor means for checking the UPS status flag 5 at the time of power failure recovery. When shut-down is completed, the recording control means records the state of the UPS 3 in the UPS status flag 5 of the register part 9. When the power failure state of the UPS 3 is canceled by the recovery of power failure, the monitor means checks the UPS status flag 5. Then, when the shut-down caused by power failure is discriminated, the AC power source output is turned on through an AC output control means 6 and restarting is automatically performed.</p> |
