| 摘要 |
PURPOSE:To control lighting smoothly, by reporting the power supply conditions to the main lighting control panel and changing-over power supply to standby and pre-setting a plurality of lighting control patterns from the service interruption to the service recovery. CONSTITUTION:A power supply supervising signal of a power supply supervisory panel 7 is transferred to the main lighting control panel 8. The main lighting control panel 8 sends the pre-setted pattern signal corresponding to each control terminal device 9 and changes over the power supply to a standby unit 14 after receiving the acknowledge signal. By this reason, either one of the commercial power supply 4, an independent power supply 5 or a battery 6 supplies the electric power to the lighting load 15 according to the power supply condition. In case of service interruption, the battery 6 supplies the power to the power supply supervisory panel 7, the main lighting control panel 8 and the control terminal device 9. |
