elevator parts load cell.low cost of load cell from china supplier EWD-H-J5

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Product Description:

elevator parts low cost load cell for passanger elevator
Type EWD-H-J5Elevator Load Weighing Device

INTRODTION MANUAL

l This system is applicable to all elevators with movable platform car (containing 3-channel programmable switch signals)

l Main characters:

1. Contactless inductive working mode, solid state relay output, no need to fix the original position of elevator overload switch, and to change structure of elevator platform car.

2. Electrical properties is in compliance with the standard of the International Electro-technical Commission.

3. Set up all parameters on the spot.

4. Adopt strong inductive magnet, improve the anti-interference ability to the utmost.

5. System carry scientifical computing out according to mathematical equations to automatically amend detention of error. It also has no-load auto zero capacity

6. It is totally convenient to adjust on the pot by means of artificial self-study or artificial displacement.

7. Control method of programmable output signal created by ourself is applicable to all kinds of traction elevator with movable platform car.

8. Integrated structure design: small size, easy installation.

Technical index

1

Scope of application

Applicable to all elevators with movable platform car. range of auto-detention (2.0mm car bottom displacement10.00mm ); range of manual set displacement: 2.5~9.9mm ( relate to parameter PD)

2

sensitivity

Rated load /200 (5.0kg when rated load is 1 ton)

3

System error

1.5% ( 5~40)

Working temperature range3.0%

4

nonlinearity

1.0%

5

Output form

Solid state relay

Programmable universal signal

① 5 channel programmable output mode are following: no- load, light- load, semi-load, heavy load, rated load and overload (user can freely set up the range of change.

② Each channel can be programmed as dynamic close or dynamic break contact.

③ Coding contact capacity: DC/AC 32V/15mA

Elevator load "no load~rated load", analog quantity:0~10Vlinearly changing

6

Storage environment

-25~75

7

Working environment

Temperature:-20~55

8

Relative humidity

20%~99%RH

9

Reaction time

0.25s

10

Power supply

AC/DC2410%V/150mA

11

Installation position

movable platform car of elevator

12

Machine dimension

45X45X903

l Working principle

Referring to diagram, by means of Holzer sensor this system tests displacement changing based on platform car of elevator and load elastic variation principle. It use single chip microcomputer to scientifically compute to correct error in terms of given parameter and measuring results based on mathematic equations, which accomplish effective load weighing of the elevator platform car.

l EWD-H-SJ3 TESTING LOAD OF INDUCTIVE ELEVATOR

  Appearance & interior structure

l Function comparison with other load weighing devices

EWD-H-J5

Other weighing devices

Working principle

Adopting Holzer sensor. Accomplishing contactless inductive working.

Advantages:

① Has long working life in that this system don't bear load of elevator.

② Width induction & high positioning precision.

③ No system damage arising from insufficient overload capacity and mechanical vibration.

④ Micro sensor & microcomputer make system highly intelligent and lower power waste.

⑤ Automatically amending detection error by means of digital. Good linearity.

Directly bear elevator load by the way of pressure sensor.  

Installing method

Only need to fasten the device in the middle of bottom of platform car or original position of mechanical switch in the condition of failure to change structure of platform car. Small size & Easy installation.

Need to change structure of  the platform car. Uneasy to install & more work.

Adjusting on the pot

① Thanks to the high intelligence personnel may complete adjustment of elevator weighing device on the spot after separately press the button of sensor two times following the completion of installation system sensor when elevator is no load or rated load.

② Elevator producer may directly complete quick adjustment of similar elevator by the way of setting-up the manual displacement.

Advantages: easy & quick to adjust

Complicated adjustment owing to the analog signal.

Connecting the interface of output signal on the select layer device

5-channel programmable output terminal could be set up by user themselves. Selection: no load, light load, semi-load, heavy load, rated load, overload; 0~10V analog output. It is convenient for user to finalize the items below: 1 vandal resistant function. 2 full bypass function. 3 energy saving function. 4 debugging system torque compensation.

Single function

Economic analysis

① High-performance to price ratio, easy to use, low breakdown.

② Less accessories, low additional cost & simple processing

Average

High additional cost

l Any information needed, please ask for the operation manual from us.  


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Q:What is the meaning of double straps in the construction elevator?
With double cage for heavy, namely SCD200/200 series Is the two cages, each cage has a corresponding weight, the weight up and down in the elevator cage rise to energy conservation and reduce the reaction between the up and down, when you imagine front-rear door principle is about the same
Q:Safe use of construction elevator
In the case of passenger and carriage, the loading shall be uniformly distributed, and the overload shall be strictly prohibited. When the elevator runs to the top and lowest levels, it is strictly forbidden to stop at the collision or lower limit. 7. The driver for leaving hanging basket and while going off work, should be hanging basket fell to the ground, to cut off the total power supply, and the door is locked point, prevent other undocumented workers start the hoisting cage without authorization. Wind up above 6, should stop using the elevator and bring the cage down to the ground. There must be good protection on both sides of the transportation channel. Floor door should be in a normally closed state, its height should conform to the requirements of the specification, anyone shall not open or head out of the door, when the floor door open, the driver shall not start the elevator. Ensure that the communication device is in good condition and the driver should be able to start the lift after confirming the signal. The driver should immediately execute any emergency stop signal on the floor of the operation. The elevator should be installed on a separate ground protection and lightning protection device. It is strictly forbidden to do maintenance work under the condition of the elevator. If maintenance is required, the power supply must be cut off and the sign of "check in, shut off" will be hung in a prominent place.
Q:Whether the construction elevator is a dual-purpose elevator
The construction elevator is being operated on; And a person's elevator is automatically controlled; The construction elevator is directed by the rack, which is seen in the rack, and the noise is large. The escalator is not a rack, it is usually guided, and the rails are invisible. Construction elevators are rudimentary; And the elevator is complicated.
Q:The elevator is banned from using elevators for more than a class of high winds
When the wind speed is more than 13 meters per second, the installation and disassembly is forbidden. When the wind speed exceeds 20m/s and the weather, such as hail, the elevator should not be used. This is the norm M/s is about 8, and 13m/s is about 6
Q:The maximum allowable deviation of the vertical is the vertical degree when the construction elevator is installed
The development of the elevator is in a peak state, because most of the manufacturers or individuals to improve the utilization efficiency of space, more options for multistory buildings, which also need a device to convenient up and down by the goods. Due to the common elevator cost is high, bearing capacity is low, not suitable for carrying dozens of tons or hundreds of tons of cargo, so developed a high bearing capacity of hydraulic lift to assist in the production and transportation of goods. The elevators are both safe and super loadable, and convenient for maintenance, making the special industry grow faster.
Q:Construction elevator positioning should consider which problems
The construction elevator is short for construction. It is an important equipment in high-rise building construction, and construction site accident hazards easily, because it can cause many major accidents, injuries in the inspection should be listed as a key to check the content. Based on past accidents and on-site inspections, we often find topics that we think should be examined in a critical area
Q:What is the main function of the construction elevator safety guard
Falling to a certain speed will automatically card death
Q:The construction elevator is commonly used in the process of the project
The construction elevator is commonly used in the process of the project. It is best to give a time period You're just saying one of its USES, I want to know what is the stage of what is going on in the project
Q:Should a fire extinguisher be equipped in the construction elevator?
The temporary building area shall be equipped with fire equipment according to the regulations. In general temporary facilities, each 100m2 is equipped with two 10L extinguisher. If the total area of a large temporary facility exceeds 1200m2, there shall be a special service for fire fighting, such as taiping pail, water bucket (pool), and huangsha ponds, etc. No items shall be piled up around the facilities. Between temporary carpenter's room, paint room, wood and machine tools, each 25m2 should be equipped with a suitable extinguisher. The oil depot and dangerous goods warehouse shall be equipped with sufficient quantity and type suitable extinguisher.
Q:The tower crane is on a surface with the construction elevator, and only 2 or 3 meters away. Is that allowed
There are no rules for the distance between tower crane and construction elevator, but note the following points: (1) the foundation of the tower crane and the construction elevator cannot affect each other; (2) the construction elevator shall not be higher than the tower crane. (3) the location of the elevator shall not be blocked by the position of the construction elevator; (4) the use of the same circuit and the same distribution box with the construction elevator shall not be used by the tower crane. The distance between the tower crane and the construction elevator can be anywhere, as long as the above aspects are met.

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