Elevator light curtain malfunction, how to solve the elevator light curtain on fault

If it is not the problem of the light curtain itself, most of the similar cases are the misalignment of the light curtain. Because of the divergence of light, the light emitted by the light receiving side light curtain can be detected when the door is wide open; When the door is approached, due to the inconsistent position, some of the light curtain on the light-receiving side cannot receive the light on the light-emitting side, and the effect is equivalent to someone or object blocking between the doors, and the door needs to be reopened.

If this problem arises once in a while, it is usually a two-kick; To solve this problem, you need to adjust the accuracy of the door.

1. The parallelism of the light curtain will cause the car door to be bent, resulting in the problem of the light curtain strip being aligned when closing.

2.If it doesn't work when the door closes, it works when it starts closing, and the line will generally not be a problem.

3.I have encountered this situation a lot, and the possibility of the light curtain strip light curtain box breaking is also relatively large.

4.Remember to wipe the dust and stains on the light curtain strip, otherwise it will be blocked.

Change the box first, then change the strip, and then change the line. Experiment it out one by one.

It's a good idea to change parts upstairs! With your support!

1. It may be that the light curtain is not aligned, and the light curtain installed on the car door will not be aligned because the slider is too loose and the car door is shaking, or the light curtain is dirty.

2. The door operator and the inverter interfere with the light curtain, it is recommended to check whether the grounding wire is in good condition, and if it really doesn't work, you can redo the grounding.

3. Interference of other rays on the light curtain.

The line is not damaged to see if the light curtain is not aligned, or it is a problem with the light curtain strip or light curtain box.

First change the light curtain line, the damage is invisible.

Take the watch. It's a malfunction of the light curtain box. Take a multimeter pestle on the light curtain box, and then close the door to see if it is the best problem.

Summary. Hello, dear, the elevator light curtain is a relatively common problem, the main reason is that due to the frequent use of the elevator, the light curtain is subject to friction and vibration, resulting in the light curtain line disconnection or short circuit, resulting in the light curtain can not work normally. Workaround:

1.First of all, check whether the power supply of the elevator light curtain is normal, if the power supply is not normal, the power supply should be repaired or replaced in time; 2.Check whether the line of the elevator light curtain is disconnected or short-circuited, if it is disconnected or short-circuited, the line should be repaired or replaced in time; 3.

Check whether the controller of the elevator light curtain is normal, if the controller is not normal, the controller should be repaired or replaced in time; 4.Check whether the interface of the elevator light curtain is normal, if the interface is not normal, the interface should be repaired or replaced in time; 5.If the above steps do not solve the problem, you can try to replace the elevator light curtain to ensure the normal use of the elevator.

Personal experience: Elevator light curtain is a relatively common problem, if the elevator light curtain is found to be broken, it should be repaired or replaced in time to ensure the normal use of the elevator. At the same time, the various components of the elevator should be checked regularly to ensure the safety of the elevator.

Hello, dear, the elevator light curtain is a relatively common problem, the main reason is that due to the frequent use of the elevator, the light curtain is subject to friction and vibration, resulting in the light curtain line disconnection or short circuit, resulting in the light curtain can not work normally. Workaround:1

First of all, check whether the power supply of the elevator light curtain is normal, if the power supply is not normal, the power supply should be repaired or replaced in time; 2.Check whether the line of the elevator light curtain is disconnected or short-circuited, if it is disconnected or short-circuited, the line should be repaired or replaced in time; 3.Check whether the controller of the elevator light curtain is normal, if the controller is not normal, the controller should be repaired or replaced in time; 4.

Check whether the interface of the elevator light curtain is normal, if the interface is not normal, the interface should be repaired or replaced in time; 5.If the above steps do not solve the problem, you can try to replace the elevator light curtain to ensure the normal use of the elevator. Personal Experience:

Broken elevator light curtain is a relatively common problem, if it is found that the elevator light curtain is broken, it should be repaired or replaced in time to ensure the normal use of the elevator. At the same time, the various components of the elevator should be checked regularly to ensure the safety of the elevator.

How to solve the three-phase electrical abnormality of the E1 board.

1. Check the open circuit or short circuit of the line; 2. Check whether the meter is normal; 3. Check whether the power equipment has hot spots or the temperature is too high; 4. Check whether the leakage protector is normal; 5. Check whether the fuse is damaged; 6. Check the three-phase load balance; 7. Check whether the wiring of the equipment is correct; 8. Check whether the control system is normal.

Yes. Generally, the system accepts the normally closed signal as a signal, and if it is normally open, the switch fails, and the system cannot judge whether it is good.

Connected to the public, normally closed, it's fine.

It is not to call you to short, but to connect your detection point, when the light curtain does not move, the switch is closed, your detection point is detected, after the light curtain moves, the switch is disconnected, and the detection point is detected and disconnected.

There is a high chance that something will go wrong with your light curtain. Because the elevator is ignored when the light curtain is overhauled, that is to say, the light curtain is broken, and the maintenance can also be walked, as long as the door is in place, the door is closed. However, under normal conditions, the system must check the normally open or normally closed detection point of the light curtain to the control system.

Under normal operating conditions, the light curtain is blocked, and the elevator must not go.

Regarding judging the quality of the on-site light curtain, it is recommended to use the replacement method, because the light curtain power box and light curtain strip may be broken.

The damage of the light curtain is generally caused by the power supply: 1. The quality of the input power supply is not good, and the fluctuation is large, resulting in damage to the light curtain box, but generally if the power supply is taken from the secondary side of the transformer of the elevator, the problem is not big. 2. Many light curtain power boxes have two gears: 110V and 220V to meet the requirements of different sites.

So the wrong connection is definitely going to be bad. 3. The quality of the light curtain itself cannot be avoided.

The light curtain strip is full of strip-shaped circuit boards, which are not easy to maintain.

It may be that the signal line is broken, or the two light curtains are not on the same plane.

See if your car door is seriously ground by the door slider.

It could be that the thread is broken. Just swap it out.

Elevator light curtain is a light-type elevator door safety protection device, which is suitable for passenger elevators and freight elevators to protect the safety of passengers. It is composed of four parts: infrared transmitters and receivers installed on both sides of the elevator car door, power box installed on the car roof and special flexible cables. There are 32 (16) infrared emitting tubes in the transmitter, and under the control of the MCU, the transmitting and receiving tubes are opened accordingly, and the car door area is continuously scanned from top to bottom to form a dense infrared protective light curtain.

When any of the rays of light are blocked, the control system immediately outputs the door opening signal, and the car door stops closing and opens in reverse, until the elevator door can be closed normally after the passenger or the obstruction leaves the warning area, so as to achieve the purpose of safety protection, so that the occurrence of the elevator clamping accident can be avoided.

Elevator light curtain is a kind of elevator door safety protection device made by using the principle of photoelectric induction, which is suitable for all elevators and protects the safety of passengers entering and exiting the elevator. The elevator light curtain is composed of three parts: infrared emitter, receiver and special flexible cable installed on both sides of the elevator car door. Due to the need for environmental protection and energy saving, more and more elevators have omitted power boxes.

Due to the poor anti-electromagnetic interference ability of some brands of light curtains, they have to use power boxes. However, with the popularization of the concept of green elevators, the light curtain of free power box is a trend. Because a lot of energy is inevitably lost in the process of converting 220V to 24V.

There are several infrared emitting tubes in the emitting end of the light curtain, and under the control of the MCU, the transmitting and receiving tubes are opened in turn, and the light emitted by one transmitter head is received by multiple receiving heads to form a multi-channel scan. By continuously scanning the car door area from top to bottom, a dense infrared protective light curtain is formed. When any of the rays are blocked, the light curtain judges that there is occlusion because the photoelectric conversion cannot be realized, so an interrupt signal is output.

This interrupt signal can be a switching quantity signal, or a signal of high or low level. After the control system receives the signal given by the light curtain, it immediately outputs the door opening signal, and the car door stops closing and opens in reverse, until the elevator door can be closed normally after the passenger or the obstruction leaves the warning area, so as to achieve the purpose of safety protection, so as to avoid the occurrence of elevator clamping accidents.

Excluding man-made damage, that is the problem of the first business, just find them directly.

Summary. If the elevator light curtain is normally open and closed wrong, it will affect the safety of the elevator, and when the elevator door is opened, the light curtain is not closed in time, which may cause passengers not to find that the elevator door is opened in time, resulting in accidents.

If the elevator light curtain is normally open and closed wrongly, it will affect the safety of the elevator, when the elevator door is opened, the cavity macro light curtain is not closed and closed when the circle is destroyed, which may cause passengers to not find out that the elevator door is open in time, resulting in accidents.

Can you tell us more about that?

The elevator light curtain is normally open and normally closed, and the wrong connection will affect the safety of the elevator, which may lead to unexpected situations and even accidents in the elevator. Reasons:1

The elevator light curtain is connected incorrectly, which may be due to improper installation and wiring of the elevator, or due to improper maintenance of the elevator, resulting in the wrong connection of the elevator light curtain. 2.The elevator light curtain is connected incorrectly, which may be due to the quality of the elevator light curtain itself, resulting in the wrong connection of the elevator light curtain.

Workaround:1If it is due to improper installation of the elevator, improper wiring, or improper maintenance of the elevator, resulting in the wrong connection of the elevator light curtain, the elevator installation and wiring should be re-checked to ensure that the elevator light curtain wiring is correct.

2.If it is due to the quality of the elevator light curtain itself, the new elevator light curtain should be replaced to ensure that the elevator light curtain wiring is correct. Personal Tips:

1.When installing the elevator, the wiring of the elevator light curtain should be carefully checked to ensure that the elevator light curtain wiring is correct. 2.

When repairing the elevator, you should carefully check the wiring of the elevator light curtain to ensure that the elevator light curtain wiring is correct. 3.When using the elevator, you should pay attention to the operation of the elevator light curtain, find the problem in time, and deal with it in time.

Related knowledge: The elevator light curtain is an elevator safety protection device, which can prevent accidents when the elevator door is opened and protect the safety of passengers. When the elevator door is opened, the beam between the light curtain head and the light curtain sensor is interrupted, and the elevator will stop running to protect the safety of passengers.

Dear to you, you have a good old leg, and have helped you find the results; Hello, if the way of forcibly opening the elevator door is more violent, it will cause damage to the elevator light curtain. An elevator light curtain is typically an infrared sensor that detects if the elevator door is completely closed to ensure the safety of passengers. If the elevator door is forcibly opened, it may cause damage to the light curtain sensor, affecting the normal operation and safety of the elevator.

Therefore, we should follow the regulations on the use of elevator finches and do not forcibly open the elevator door.