| 摘要 |
PURPOSE: To detect the subsequent positions of a door correctly by stopping the door in a normal opening position without pressing at the time of normal opening action, and pressing the door into the end position and resetting the door position detection count value when reverse rotating action is continued plural times. CONSTITUTION: When normal closing action is started, an electric motor 6 is rotated reversely at high speed so as to put a door 4 in high speed closing action. The position of the door 4 at this time is detected by the pulse minus counting of a door position counter 15a. The door 4 is put in low speed closing action at a braking point so as to be closed and pressed to a door stop in an end position, and a reverse rotation frequency counter 16 and the door position counter l5a are reset. In the case of a human body detection signal R1 being inputted during this action, the reverse rotation frequency counter 16 counts reverse rotation frequency as one, and in the case of the door position at that time being in a high speed opening action possible position, the electric motor 6 is rotated normally at high speed to put the door 4 in high speed opening action. When this reverse rotation frequency is less than the set frequency, the door 4 is put in normal opening action, and when the reverse rotation frequency is the set frequency or more, the door is put in fully opening action. |
