| 摘要 |
<p>PURPOSE:To interrupt power even if a fault takes place in a system power controller section by providing a power disconnection signal transmission circuit disconnecting the supply of a DC power supply from the system power controller power supply section with priority over a power application/disconnection command of a system control panel section. CONSTITUTION:A power disconnection signal transmission circuit 7 outputting an disconnection signal disconnecting only a DC power PWR according to a prescribed sequence to a system power controller power supply section 3 with priority over the application/disconnection command of the power supply of the system control panel section 1 is provided. When the power disconnection by the normal operation from the system control panel 1 is not executed, the power disconnection signal transmission circuit 7 disconnects the DC power PWR fed to the system power controller section forcibly. Even if a fault takes place in the system power controller section, the DC power supply PWR is disconnected without momentary power disconnection. Since the disconnection in this case is conducted according to a prescribed sequence, the processing is not disconnected.</p> |
