How to select SH series of Fuji industrial relays for elevator or escalator?

Relay is divided into AC Relay (voltage AC) and DC Relay (voltage DC), which is used in Electric power industry, due to relay device can be used to cut off main circuit quickly, therefore, it is often used for motor control.

For elevator industry, people usually use the relay to control circuit of elevator on and off, so it is a very important elevator parts. Nowadays, the world’s top 10 famous relay brands are: schneider, ABB, SIEMENS, Mitsubishi, Allen-Bradley, Fuji Electric, Sprecher+Schuh, OMRON, TE Connectivity, EATON. But today we are just discussing Fuji Electric Relay used in the elevator industry.

Bifurcated contacts with excellent electrical conductivity/Fuji SH-4 Relay, SH-5 Relay

Description of SH Series Relays:

SH series industrial relays are designed to increase contact reliability and make them easy to use.
The relays’ highly reliable, bifurcated contacts allow them to be used in low-level circuits of 5V, 3mA.
Various optional function units such as auxiliary contact blocks, coil surge suppression units can be added to the relays, allowing fast and field modification.

Fuji Relay Model Selection (SH Series)

Types and ratings

Type

SH-4

SH-5

Pole (No. of contacts)

4-pole

8-pole

5-pole

Contact arrangement

4NO, 3NO+1NC, 2NO+2NC

8NO, 7NO+1NC, 8NO+2NC
5NO+3NC, 4NO+4NC

5NO, 4NO+1NC, 3NO+2NC
2NO+3NC, 1NO+4NC, 5NC

Thermal current (A)

Rated operational current (A)

Volts	AC-15 (ind.)	AC-12 (res.)	Volts	DC-13 (ind.)	DC-12 (res.)
110V AC	6	10	24V DC	3	5
220V AC	3	8	48V DC	1.5	3
440V AC	1.5	5	110V DC	0.55	2.5
550V AC	1.2	5	220V DC	0.27	1

Standard operating coil voltage

100V 50Hz/100-110V 60Hz, 200V 5OHz/200-220V 60Hz, 380V-400V 50Hz/400-440V 60Hz

Mechanical durability
Electrical durability (AC-15)

10 million operations
500,000 operations (at operational current)

Operating cycles per hour

1,800

Ambient temperature

-5 to +50℃

Ordering code system

Ordering code system of Fuji Relay SH Series

What is the escalator anti-climbing device (Anti-climb Barriers)?

When the escalator is more than 12.5 cm adjacent to the wall, it should be on the escalator or automatic.

A blocking device installed at the upper and lower end of a sidewalk.

What is the escalator anti-climbing device?

Generally, the escalator anti-climbing device on the market is mostly made of acrylic material, and its characteristics are as follows:

The heat deformation temperature of ordinary acrylic sheets is about 100 degrees, and the continuous use temperature should not be higher than 90 degrees.
Acrylic sheets are easy to generate static electricity and absorb dust. When cleaning with soft cotton cloth dip 1% soap water can be wiped.
The surface hardness of acrylic sheets is equivalent to aluminum materials. When used or processed, please be careful to avoid surface scratches. If you get scratched,

The original glossy surface can be restored by polishing.

What is the escalator anti-climbing device?

Installation necessity

In public elevators, there are no shortages of children chasing after play. Although many beside the escalators are “forbidden climbing play”, “children must be under adult supervision on” logo, but the installation of the elevator armrests prevent climbing, will also reduce the risk of accidents.

So to go against the wall adjacent to more than 12.5cm, on escalators or sidewalks, bottom department shall install block device, to prevent people from entering the outer cover plate area, thus fall accident, etc.

Method of use

If there is a risk of a person falling, appropriate measures should be taken to prevent the person from climbing onto the outside of the handrail device. In order to ensure this, escalators and moving sidewalks outside cover plate should be installed on the fortification climb the device (see right-hand chart), climbing device located above ground plane h9 (1000 + 50 mm), lower fellowship with outer cover plate, parallel to the outer cover plate on the direction of extension of l5 should not be less than 1000 mm in length, and shall ensure that within the scope of this length without stepping on foot.

How to avoid elevator car door failure?

The failure of elevator door system accounts for a large proportion of the total failure of elevator, among which the door mechanism is the most frequently running system in the work of elevator, which is directly related to the safe and reliable operation of elevator. The failure rate of car door system also accounts for a considerable proportion in the failure rate of door system. The main reason is that the installation technology of door system is not up to the design requirement. The interpretation of the car door below is shared.

What kind of material is suitable for what kind of tool?

The door opener, car door, safety security sensor, and the installation of the door knife have been completed by the installation team at the time of maintenance.
The adjustment of car door is the premise of door system adjustment. Only after the door is adjusted, will the door be calibrated.
First remove dust from the door with a pair of fan, and then grind the track of the door with more than 300# sandpaper to ensure the flexible operation of the door.
The door must be adjusted to:

The distance between the door plate and the floor sill is 4mm;
The distance between the door and the front wall of the car is 4-6mm (not too small). Check method is to use just ruler on two pieces of door plank up and down side, whether it is balance.
The front and side of the door must be vertical to ensure that the door is properly sewn when it closed, meanwhile when opened; it joined to the front of the car. After adjusting the car door, you can open and close the door manually. The whole switch process should be easy and smooth.

Adjust the security sensor and light curtain. When the contact plate is extended, the contact plate’s protrusion is suitable for 30mm to 50mm, and the same amount of two contacts is used. The light curtain should be even, and no abnormal trigger should occur during the rapid opening and closing process, especially for the rear light curtain to keep clean.
Adjust the opening knife: step 1: make sure the distance between the door knife and the floor sill of the hall door is 7mm, and ensure the vertical direction; Step 2: determine the distance between the blade of the door knife and the decoupling roller of the door lock of the hall door is about 7mm. Check running elevator to observe all the way, depends on the clearance of most hall door, can be in a small range on the left, right, right amount translation car door assembly (this method is not applicable to double synchronous door knife of double folding door such as TD3200 car elevator door machine); Step 3: the two surfaces of the door knife blade, namely the one of the rollers, must be vertical. Step 4: check that when driving the door, the blade should not make abnormal sound.
The speed of opening and closing shall be adjusted when the door of the sedan chair drives the door of the hall. The speed shall be controlled at about.070m/s. The speed of opening and closing doors should be gentle according to the elevator’s different acceleration and deceleration.

What is the function of escalator apron board safety device?

The micro-switch of apron plate is a safety-protection micro-switch after the apron plate. When the escalator works normally, there is a certain gap between the apron board and the step. The single side is no more than 4mmand the sum of both sides is no more than 7mm. In order to guarantee the safety of the passengers, the apron board on the back of the pack of c-shaped steel, c-shaped steel distance setting switch, when foreign body into the apron board and the gaps between the cascade, apron plate deformation, c-shaped steel also move, after reaching a certain position, touch attack switch, then escalator stop running immediately.

The sensitivity of the device depends on the rigidity of the apron board. Too rigid apron plate is not easy to deform, cannot touch the micro switch, does not play a safe protection role; the rigidity is too small and the phenomenon of frequent parking will bring troubles to the normal operation of escalators. In addition, the micro switch is not generally set in the whole process, and it is only installed at the exit entrance of the escalator. Therefore, there are safety risks in the area other than the micro switch.

Filling device

A plastic and dry lubricant filled plate is arranged on both sides of the step and its shape matches the step. Fill plate by a spring or tie rod to keep its position and the entire range of the escalators and apron board contact, filled with escalators between apron board and cascade on both sides of the gap and its safety protective effect is obvious. The device, the filling plate contact with apron board is a kind of dry friction, easy to wear apron board Teflon coating and furnish the filler plate larger workload, so rarely used in our country.

Anti- clamping device

This is an economical and practical anti-clamping device, which compresses the rubber into a D section and fixes it to the apron board. Because the friction coefficient of rubber material is big, once the passenger meets the feeling that can be pulled again, can leave both ends of the step automatically, have safe protection effect.

For escalators with such clamping devices, rubber strips should not have sharp edges and should be checked frequently, as they can also bring danger to passengers if they leave apron boards.

Safety brush clamping device

Installed on the apron board safety brush, brush the clamp device is composed of base and brush, base without sharp edges, and can easily remove brush is soft and has a certain hardness, it does not hurt the clothing, meet the brush in the passengers’ shoes automatically after recovery.

The safety protection effect of safety brush anti-clamp device is obvious.

What is the elevator five channel communication system?

Five channel communication of elevator refers to the communication involved with the host of management center, car, machine room, top of the elevator and the bottom. The system can solve difficult problems and also carry out elevator maintenance and repair at ordinary times.

What is the elevator five channel communication system?

FM radio full-duplex elevator five channel system instructions:

It is a foreign relief system, which used for the elevator trapped or malfunction and it is also used as a communication system when the elevator maintenance. There are car inter-phone, elevator inter-phone (including machine room extension, car top extension, bottom pit extension) wireless extension and wireless host, the operation steps are as follows:

Car phone

1) In case of distress in the car, press the call button gently. The car phone will automatically call the host by voice without any other operation. The time of a two-way call after connecting is 60 seconds.

2) After the host receives the voice call, the on-duty personnel press the alarm button to conduct two-way communication with the call extension.

Elevator phone

1) Pick up the micro phone and talk to the car.

2) Press the “call” button to call the host of the duty room to talk to its implementation

GSM mobile network elevator five parties call system instructions:

also it is a foreign relief system, which used for the elevator trapped or malfunction, and also as a communication system, when the elevator maintenance. There are car sub-machine, handle sub-machine (including machine room sub-machine, car top sub-machine, bottom pit sub-machine) and wireless gateway. The operation steps are as follows:

Car extension branch phone

1) In case of distress in the car, press the call button gently. The car extension will automatically dial out the first phone number.

2) When the first phone number is dialed out, it can be hung up manually (press this call button lightly). Press the call button again and the car extension will dial out the second phone number automatically. The fifth inter-phone number is automatically dialed by the car extension.

3) Repeat steps 1 and 2. These five inter-phone Numbers can be redial. When the car extension dials the inter-phone number automatically, the inter-phone lift in the duty room will stop ringing and the car can be connected to make a call.

Elevator phone

1) Pick up the micro phone and talk to the car.

2) Press the “call” button to call the host of the duty room to talk to its implementation.

Duty room

1) When the call is received, the call can be picked up.

2) Call back in the duty room. Call back the mobile phone card number in the sub-machine and the corresponding car.

When any two parties are talking on the phone, either of them can join the product composition of the GSM three-party (five-party) intercom system.

Why does the elevator have a overspeed governor?

Elevator Overspeed Governor Manufacturer, Lecture on elevator parts and elevator knowledge Elevator Safety Gear & Reducer

Elevator Overspeed governor （Elevator OverSpeed limiter） is one of the safety control components of elevator safety protection system. When the elevator in running ,no matter what the speed governor in the car or the risk of falling or other situations of safety protection devices do not work, safety gear speed governor and linkage will start to work and make the elevator car stop running, to ensure the safety of the elevator.

Installation location

The speed governor is generally located in the elevator machine room. According to the requirements of the installation plan, it is generally installed on the floor of the machine room. However the speed governor also can be directly installed on the bearing beam .The specific position of the speed governor is determined according to the construction drawing and the position of the car and guide rail after adjustment.

Technical requirements
We should pay attention to the speed governor wheel vertical degree of deviation should not be more than 0.5 mm, speed governor wire rope should be aligned with room reserved hole center, the error is not more than 0.5 mm, governor rope groove center and tension pulley rope groove center must be in the same vertical plane. The car will be two rope to the connecting hole, two connecting holes should be on the same vertical line after the connection completed.
According to the requirements of the installation plan, the position deviation of the speed governor should not be greater than 3mm.
The distance between the rope and the guide rail of the speed governor device should meet the requirements of the installation plan.
The tension of the tension device on each branch of the rope shall not be less than 150N.
Speed governor switch and tension wheel switch shall ensure that the control loop can be cut off quickly and reliably when the rope breaks off, falls off, the rope clamp is unhooked or the speed governor is in action.
Notes
The action direction of the speed governor should be consistent with the descending direction of the car to ensure the safety clamp works.
The wire rope of speed governor shall not be rubbed or contacted with the clamping pliers during normal operation.
The steel wire rope of speed governor shall not have any dead bend and a rope sleeve shall be installed at the connection with the cage pull rod and the rope head shall be firmly fastened with a rope clamp
Restrictions

The speed governor must be starting to work before the car speed exceeds 115%.

1) For instantaneous safety gear, the speed governor of 0.80m/s (except roller type).

2) For roller type instantaneous safety gear, the speed governor of 1.0 m/s.

3) for safety gear with buffer effect and for progressive safety gear with rated speed governor not exceeding 1.0 m/s, 1.5 m/s.

4) for progressive security safety gear with rated speed governor over 1.0 m/s, the speed governor of 1.25 *v+ 0.25 /v.

The speed governor is a safety device, so the manufacturer should evaluate the product in accordance with appendix Fo4 of the en81-1/2 standard before it is released. If the assessment result is positive, a type certificate will be issued and must be attached to the equipment. The CE mark is displayed simultaneously on the device.

How to replace escalator step chain and chain wheel?

The replacement of the escalator step chain is a complicated work. but it is also the main part of the overhaul and is one of the few complicated technical tasks. First of all, put the escalator on the maintenance, use the maintenance switch to control the operation of the escalator up and down, so that turn the bottom pit to remove all the steps. The process takes about one day for two people. Fixed one day after removing the steps. Prepare the tools needed to remove the large chain of steps, and meanwhile, prepare the new step chain and the big chain breaking from the back-end removed to the outside of the escalator large frame, a new escalator large chain from the back-end installation, you need to use the guide chain after idling around big chain to make it work on constant track route. Such a good step after adjusting both sides of the rear end of the tightening spring screw can be declared completed. Here must reminder our customer that the escalator chain wheel of the step cannot be replaced individually but must replace the whole set step chain. Because of the left and right chains need to be matched, so we need to replacement for both sides together.

How to replace escalator step chain and chain wheel?

Replacement steps as following:

Determine the number of step sprocket to be replaced, preferably in accordance with the whole chain
Remove the inner and outer cover and apron board of the left and right straight-line section of the lower end, about 6 meters in length.
The steps on the chain need to be replaced for removal.
Move part of the chain that needs to be replaced to the position of removing the inside and outside cover plate and apron plate.
Loosen the lower end of the ladder chain and tighten it.
Use special components (or wire) to fix chains that do not need to be removed.
Remove and replace the escalator step chain.
Tighten the cascade chain after replacement.
Install the steps and correct them.
Install other removal parts.
Test run

What is the Escalator (Moving Walk) Comb Plate?

What is comb plate for escalator units?

The comb plate is located at both ends of the exit entrance, to facilitate passenger transition and engage with steps, pedals or automatic sidewalk tape. The ends are rounded and shaped to minimize the risk of foot clamping between steps, pedals or tape. The supporting structure shall be adjustable to ensure proper meshing and proper stiffness.

The comb plate is the safety protection device of the elevator. There is a micro switch behind the comb plate.

One side of the comb plate is supported on the front plate and the other side is used as the fixing surface of the comb tooth. Its horizontal Angle < 10 °.The structure of the comb plate shall be adjustable to ensure that the meshing depth of the carding teeth is greater than 6 mm. It can be made of aluminum alloy profiles or thick carbon steel plates.

The comb lamp is a part of an escalator and walkway that gives light from under the foot of the passenger at the exit. Usually set at the end of the skirt board at the entrance and exit. Lighting should be adequate and adequate. The lighting at the comb plate should be consistent with the lighting required in the area. The lighting at the indoor or outdoor escalator and the exit of the automatic sidewalk should be at least 50lx or 15lx respectively.

Aluminum Comb Plate

Installation of comb plate

To ensure the safety of passengers on the escalator, it must be installed at the entrance and exit of the escalator

(1) The front comb plate is an extension of the ground plane and the height cannot be different. The height difference between it and the upper surface of the step pedal should be no more than 80mm.

(2) Comb Plate. One support on the front panel, the other as a comb fixed surface, its horizontal Angle of 40 °or less, the structure of the comb plate is adjustable, in order to guaranty the pedals and comb tooth meshing depth of 6 mm with tape or alveolar knead to a depth of 4 mm or more.

(3) Comb Teeth. Tooth width of 2.5 mm, or end for rounded corners, horizontal Angle of 40 °or less.

(4) The adhesive tape of the automatic sidewalk shall have a groove that meshes with the comb teeth of the comb teeth along the running direction.

(5) The height of the belt groove should not be less than 1.5mm, the depth of the groove should not be less than 5mm, the width of the tooth should not be less than 4.5mm, and it should not be more than 8mm.

(6) The tape should be able to be continuously and automatically tension, and it is not allowed to use stretching spring as tension device.

(7) The vertical net height shall not be less than 2.3m above the escalator, the footstep of the automatic sidewalk or the tape of the automatic sidewalk.

Some Guide Shoe of Elevator Equipment Knowledge You Should Know

The elevator guide shoe

Guide shoe is a sliding part between elevator guide rail and car, what we call it guide shoe. It can fix the car on the guide rail and make car running up and down. Oil cup upper the guide shoe that can reduce the friction of the shoe line and guide rail. There are four sets of guide shoes installed in each unit, respectively on both sides of the upper beam and under the safety clamp seat at the bottom of the car; and also four sets counter weight guide shoes are mounted on the bottom and top of the beam.

The guide shoes fixed on the car can move up and down along the fixed guide rail installed on the wall of the well way of the building to prevent the car from deviating or swinging in operation.

Guide shoe installation requirements

The installation method of guide shoe is to put it on the installation position of the guide rail of the car frame. After finding the right position, use the bolt fix it on the car guide rail frame. The installation must meet the following requirements：

When the upper and lower guide shoes are installed in the right position, they should be on the same vertical line. No slant or deflection is allowed. Both roller guide shoes and fixed guide shoes same requirement.
Fixed guide shoes are mainly used for FOVF units, the clearance between the two sides should be consistent, and the clearance between the inner lining and the rail top should be within O. 5 ~ 2 mm

Guide shoe types

Otis Elevator Spare Parts Roller Guide Shoe (Triangular Plate) KAA24180A1

Elevator Spare Parts Roller Guide Shoe (Triangular Plate) EEV24180A1

Elevator guide shoe consists of roll guide shoes and slide guide shoes

Roll guide shoes are 3 or 6 wheels stuck on the track and are generally used for elevators with a speed of more than 2 meters.

Features: to roll friction instead of sliding friction can reduce the friction loss and the vibration and noise of the running, so as to improve the passengers comfortable, but this guide shoe processing and installation requirements are higher.

Otis Elevator Spare Parts Fixed Guide Shoe XAA24161A1

Elevator Spare Parts Fixed Guide Shoe EEV24161A1

The fixed slide shoe is a slide way that is stuck to the guide rail and is usually used in an elevator with a speed of less than 2 meters

Features: died from a guide shoe head is fixed, and the structure is simple, without adjusting mechanism, as the elevator running time growth, guide shoes and guide rail fit clearance will be more and more bigger, in the operation of the capsules in shaking, can appear even shock.

Elastic slide guide shoes are also divided into spring sliding guide shoes (for elevators with rated speed less than 1.7 m/s) and rubber spring sliding guide boots (for medium-high speed elevators).

Some types of COP button in elevator car you should know

Elevator in everyday life, in order to help people to save time, is characterized by large traffic, high frequency of usage and pay attention to efficiency, using unconventional formative elevator buttons, common elevator button on the control box of the basic rules are a whole transverse longitudinal alignment layout.

Button material

Elevator buttons can be in the form of floor numbers and buttons integrated and separated, in this case, only floor Numbers and buttons integrated. The common materials of buttons are white characters of silver background, black characters of silver background, black characters of white background and white characters with black background.

Analysis on the recognition: white background black characters, black background white characters and silver background black characters, text and background can form a large contrast, easy to identify. The white letters on the silver bottom are relatively low in recognition and difficult to read when not facing. It’s all silver, and there’s a similar problem.

Design 1- Braille button for special people

Now many public facilities and housing are designed for the special groups, which is a country, a city, the embodiment of the humanistic care to special groups, designed for the special groups, should be first defined as under the premise that does not affect ordinary people use can ensure that the special groups, and it’s convenient to make such as brailed buttons.

Button design for the blind, which is supposed to be the most popular design for the special population, and the form is quite colorful.

The most common way is to put Numbers and braille tags together on the same button, like S. It should also be the cheapest way to achieve this. But personally think that the problem is the border of the touch and press hard to grasp, do not understand the blind mode of operation, oneself just wants to feel there is the problem, if there is any misunderstanding at correct). Imagine a blind person touching a button area and trying to figure out how to make sure the Numbers look for patterns. Knowing the braille should be touched with some force, but avoid pushing the button. Whether it is easy to operate by mistake like this, it is easy about the blind to be in a more nervous state.

U and c are barely a type of design. The black area places the floor number and braille mark, and the button provides the operation. Such separation processing avoids the above mentioned problems. However, the comparison between the two also reveals a problem that U fail to consider the principle of intimacy. If you look at the layout of U, it is probably the work of an industrial designer who is too dedicated to “alignment”. Configuration is very uniform, but black area and button corresponding relationship, can’t be clear at a glance to see or find out, we should use “read from left to right” experience or a minimum repeat unit to the right operation. The design like c USES exterior matching to form a natural connection between the two, which is a relatively good design.

X’s design is more neutral, which ensures that blind people can recognize it, and also ensures that it does not increase the burden of recognition on ordinary people. It is also very beautiful. J and T is a person feel better design, made braille region and the entire panel the same raw material, and its corresponding floor button closely arranged, neither too much interference identification, ordinary people also convenient operation for the blind. However, T is slightly superior to J in the design of braille area. Braille is arranged on the same board for convenient extension and touch.

Design 2 – disabled operation panel for special people

In addition to the blind, some elevators also consider the disabled. Ordinary button near the door on the right side of the central commonly, it is still partial corner space position, for the disabled, don’t use tools, regardless of whether they are accurate to the corner of the position or the upper button operation, is very difficult. Nowadays, many public facilities are located in the center of the left and right sides of the elevator, with separate button panels for the operation of disabled people, which facilitates the travel of disabled people.

The COP humanized button design in the elevator car makes our trip more convenient and warm today!