如今，卷帘门越来越多地应用于食品、包装、物流车间。卷帘门以其方便、快捷、密封等优点受到越来越多客户的青睐。但是由于一些使用不当，卷帘门在使用过程中会遇到一些故障，让客户很头疼。例如，门体升到顶部后不能倒下。

Nowadays, roller shutter doors are more and more used in food, packaging and logistics workshops. Roller shutter door is favored by more and more customers for its convenience, quickness, sealing and other advantages. However, due to some improper use, the rolling shutter door will encounter some faults during use, which gives the customer a headache. For example, the door body cannot fall down after it rises to the top.

卷帘门升到顶部后不能落下的原因及解决方法如下：

The reasons why the rolling shutter door cannot fall down after rising to the top and the solutions are as follows:

原因：红外线受外力影响，位置偏移，无法形成物体，导致光电系统故障。

Cause: the infrared ray is affected by external force, the position is offset, and the object cannot be formed, resulting in the failure of the photoelectric system.

解决方法：重新校正红外位置，达到相反的效果。

Solution: recalibrate the infrared position to achieve the opposite effect.

原因：地面感应线圈上方有金属物体，导致车辆检测器有信号存在，门体不能掉落。

Cause: there is a metal object above the ground induction coil, resulting in the presence of a signal from the vehicle detector, and the door body cannot fall.

解决方法：清理地面感应线圈附近的金属障碍物。

Solution: clear the metal obstacles near the ground induction coil.

原因：微波雷达的辐射范围内有运动物质，导致光电信号一直存在。

Cause: there are moving substances within the radiation range of microwave radar, resulting in the existence of photoelectric signals all the time.

解决方法：障碍物。

Solution: remove obstacles.

卷帘门的上限在电控箱内复位。设置下，建议留一点空间，这样上限就不会轻易上移卡住。

The upper limit of the rolling shutter door is reset in the electric cabinet. When setting the lower limit, it is recommended to leave a little space so that the upper limit will not easily move up and get stuck.

此外，济南卷帘门厂提醒您，卷帘门在使用过程中也会出现异常抖动。事实上，异常的振动或噪音很容易导致电机发热。这种情况属于电机本身引起的振动。弯曲、端盖、机座和转子的不同轴、紧固件松动或电机安装基础不平整或安装不当，或可能从机械端传递。

In addition, Jinan roller shutter door factory reminds you that the roller shutter door will also vibrate abnormally during use. In fact, abnormal vibration or noise can easily lead to motor heating. This condition belongs to the vibration caused by the motor itself. Bending, different shafts and fasteners of end cover, frame and rotor are loose, or the motor installation foundation is uneven or improperly installed, or may be transmitted from the mechanical end.

定子和转子之间的气隙很小，很容易造成定子和转子之间的碰撞。如发现卷帘门轴承磨损，应及时更换，更换端盖或刷洗。较简单的处理方法是在端盖上插入一个套筒。

The air gap between stator and rotor is very small, which is easy to cause the collision between stator and rotor. If the roller shutter door bearing is found to be worn, it shall be replaced in time, and the end cover shall be replaced or brushed. A simpler treatment is to insert a sleeve into the end cap.

当电源电压过高时，励磁电流增大，电机会过热。三相电压不对称时，即一相电压过高或过低时，某一相电流过大，电机发热，转矩下降。同时。会有“嗡嗡”的声音，随着时间的推移会损坏绕组。本机电源电压不得超过额定值的±10%，三相电源电压之差不应超过额定值的±5%。

When the power supply voltage is too high, the excitation current increases and the motor will overheat. When the three-phase voltage is asymmetric, that is, when the voltage of one phase is too high or too low, the current of one phase is too large, the motor heats up and the torque decreases. At the same time. There will be a "buzzing" sound, which will damage the winding over time. The power supply voltage of the machine shall not exceed ± 10% of the rated value, and the difference of three-phase power supply voltage shall not exceed ± 5% of the rated value.

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