| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a control structure for a shutter capable of being indicated by deciding faults occurring in a driving section and a power source section constituting the shutter or the fact of the necessity for maintenance inspection. SOLUTION: The shutter A is constituted by having a shutter body 1, a mechanism having a hoisting drum 2, the driving section 4 transferring the rotation of a motor 3 to the hoisting drum 2, the power source section 10, an operating section 14, a rotation detection 12 for detecting the rotation of the motor 3, a power source detection 11 for detecting voltage or current of the power source section 10, an operating signal detection for detecting an operating signal, a storage section 15a for storing the rotation of the motor 3 in a normal state and the value of the voltage and current in the power source section 10, a control section 15 transmitting the signal by deciding whether or not the driving section 4, power source section 10 and operating section 14 are normally operated by comparing the information detected by the rotation detection, power source detection and operating signal detection with the rotation and value of the voltage and current stored in the storage section and indicating sections 16 and 20 indicatint whether or not the shutter is normally operated on the basis of the signal transmitted from the control section 15.</p> |
