In the maintenance of a recent supermarket project, the fire shutter door cannot fall to the bottom at one time (about 20 cm from the ground) when it falls. You need to press the "fall" button again to fall to the bottom. This situation has nothing to do with the limit switch, mainly because the roller shutter is not set correctly.

跟大家分享一下濟(jì)南卷簾門限位的調(diào)節(jié)：

First of all, let's share the adjustment of Jinan roller shutter threshold:

防火卷簾門限位動(dòng)作演示視頻如下所示，觀察限位開關(guān)的動(dòng)作變化及限位調(diào)節(jié)輪的移動(dòng)變化。

The demonstration video of fire shutter threshold action is shown below. Observe the action change of limit switch and the movement change of limit adjusting wheel.

從視頻中可以看出，卷簾限位的控制，是由轉(zhuǎn)軸上兩個(gè)小輪左右碰觸微動(dòng)開關(guān)來(lái)實(shí)現(xiàn)的。

It can be seen from the video that the control of roller shutter limit is realized by two small wheels on the rotating shaft touching the microswitch.

防火卷簾門

Fireproof rolling shutter door

兩個(gè)限位調(diào)節(jié)輪在左右移動(dòng)的過(guò)程中，觸動(dòng)兩個(gè)微動(dòng)開關(guān)。（注意，卷簾的上限位盡量不要隨便調(diào)，或者要謹(jǐn)慎調(diào)節(jié)）

When the two limit adjustment wheels move left and right, they touch two microswitches. (note that the upper limit of the roller shutter should not be adjusted casually or carefully)

卷簾下限位調(diào)節(jié)方法：

Lower limit adjustment method of roller shutter:

要確定哪個(gè)是下限位的控制開關(guān)（將卷簾升到頂部，觀察哪個(gè)微動(dòng)開關(guān)處于“動(dòng)作”狀態(tài)，則該開關(guān)為上限位開關(guān)，另一個(gè)位下限位開關(guān)。這個(gè)不需要死記硬背。）

First, determine which is the lower limit control switch (raise the roller shutter to the top and observe which microswitch is in the "action" state, then the switch is the upper limit switch and the other is the lower limit switch. This does not need to be memorized.)

剛才找到了下限位開關(guān)，距離該開關(guān)更近的調(diào)節(jié)輪就是我們需要調(diào)整的。（調(diào)節(jié)輪距離下限位開關(guān)越近，下限位開關(guān)動(dòng)作越提前，那么卷簾就越早的停止下降，即卷簾下降的距離短；反之，卷簾下降的距離越長(zhǎng)）

Just now we found the lower limit switch. The adjusting wheel nearest to the switch is what we need to adjust. (the closer the adjusting wheel is to the lower limit switch, the earlier the action of the lower limit switch is, the earlier the rolling shutter stops falling, that is, the shorter the falling distance of the rolling shutter; on the contrary, the longer the falling distance of the rolling shutter.)

防火卷簾門

Fireproof rolling shutter door

比如卷簾下降距離太大，這時(shí)候我們需要讓卷簾提起一點(diǎn)時(shí)間停止，那么將這個(gè)調(diào)節(jié)輪向靠近限位開關(guān)的方向移動(dòng)即可，具體操作：

For example, the falling distance of the roller shutter is too large. At this time, we need to lift the roller shutter for a little time to stop. Then move the adjusting wheel to the direction close to the limit switch. The specific operation is as follows:

1、手動(dòng)下降卷簾到合適位置停止。

1. Manually lower the roller shutter to the appropriate position to stop.

2、松開調(diào)節(jié)輪的固定螺絲，靠近限位開關(guān)方向移動(dòng)，位置使限位開關(guān)“恰好”動(dòng)作即可，擰緊調(diào)節(jié)輪固定螺絲即可。

2. Loosen the fixing screw of the adjusting wheel and move it close to the limit switch to make the limit switch "just" act. Tighten the fixing screw of the adjusting wheel.

3、升起卷簾，然后手動(dòng)下降，觀察設(shè)定的位置是否合適。

3. Raise the roller shutter, then lower it manually, and observe whether the set position is appropriate.

卷簾上限位的調(diào)節(jié)方法是相同的，需要注意的是上限調(diào)節(jié)不可太靠上，避免卷簾卷入卷軸，需要謹(jǐn)慎操作！

The adjustment method of the upper limit of the roller shutter is the same. It should be noted that the upper limit adjustment should not be too close to avoid the roller shutter from being involved in the reel. It needs to be operated carefully!

希望以上關(guān)于防火卷簾門控制上限和下限的方法，能夠幫助到大家，如果您有關(guān)于防火卷簾門的問(wèn)題，歡迎咨詢我們。

I hope the above methods for controlling the upper and lower limits of fire shutter doors can help you. If you have any questions about fire shutter doors, please consult us.