公开(公告)号：US20020153854A1

公开(公告)日：2002-10-24

申请号：US10017051

申请日：2001-12-13

Applicant: OVERHEAD DOOR CORPORATION

Inventor： Brett A. Reed ,  Robert E. Balli

IPC: H02P001/04

CPC classification number: E06B9/68

Abstract: An operator control system for controlling the operation of an electric motor driven door or gate operator unit having a speed reducing gear drive mechanism and a brake unit for positive braking of the motor output shaft. A programmable microcontroller is operably connected to a motor drive circuit with interlock relays to energize the operator unit drive motor for rotation in opposite directions. The motor drive circuit is interconnected with a motor watchdog circuit to effect motor shutdown if the microcontroller malfunctions. The motor drive circuit is operably connected to a brake release circuit to prevent motor operation unless the electrically operated brake is energized to release braking of an operator output shaft. The microcontroller receives input signals from manually or radio-controlled door open, close and stop switches and from door position limit switches. The microcontroller is connected to a non-volatile memory for storing door mid-stop time delay values, braking rates, a door position limit overrun signal, a door cycle count, door reversals upon receiving an obstruction detector signal and error codes associated with door operator and control system malfunctions. The door may be operated to provide a down position limit overrun, progressive braking and a mid-stop set position by time based signals. The electrically operated brake may be controlled on a variable duty cycle to provide smooth braking action in both directions of movement of the door.

Abstract translation: 一种用于控制具有减速齿轮驱动机构的电动机驱动门或门操作单元的操作的操作员控制系统和用于电动机输出轴的正制动的制动单元。 可编程微控制器可操作地连接到具有联锁继电器的马达驱动电路，以使操作单元驱动马达向相反方向旋转。 如果单片机发生故障，电机驱动电路与电机看门狗电路互连，以实现电机停机。 电动机驱动电路可操作地连接到制动器释放电路以防止电动机操作，除非电动制动器通电以释放操作者输出轴的制动。 微控制器从手动或无线电控制的门接收输入信号，打开，关闭和停止开关和门位置限位开关。 微控制器连接到非易失性存储器，用于存储门中止时间延迟值，制动速率，门位置限制超限信号，门循环计数，接收到障碍物检测器信号时的门反转以及与门操作器相关的错误代码 和控制系统故障。 可以操作门以通过基于时间的信号提供下降位置限制超限，逐步制动和中止设定位置。 电动制动器可以被控制在可变占空比上，以在门的两个运动方向上提供平稳的制动作用。