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:How does the construction lift fall without electricity
Pull the manual release (or pedal release) to loosen the electric motor to loosen the brake, the lift will fall, and the speed localizer will die. It's not that professionals don't try "very dangerous"
Q:Are there any good signs in the construction elevator door
It is forbidden to climb, construction lift operation procedure, limited number of passengers, no power cuts
Q:How many meters is the wall of the construction elevator?
I know the bunter lift is six meters so you can get it
Q:Why is the construction elevator open on one side and the other on the other
The two-door design is designed for the safety of the operator. In the discharge mouth, if you set up a single door, a large portion of your body will be exposed outside, causing falling damage.
Q:How much cable does the construction elevator 44KVA need?
44 kva? What elevator, convert the high piezoelectric 44kva to power 35.2 KW, current 80A16 square cable
Q:What are the requirements for the construction elevator
So for safety device factory test is very strict, before delivery by the statutory inspection unit for torque measurement, critical speed measurement, measuring the amount of spring compression, each with the test report, after assembly to the construction lifter for drop test under rated load, and the site to use the elevator must be every three months to conduct a drop test. For safety device to the factory for two years for safety device (delivery date), must also be sent to the statutory inspection unit to carry on the test, after testing once a year.
Q:How many meters must be installed in the construction elevator search?
There is no hard and fast rules, but the construction unit according to the time limit for a project, the delivery of materials, construction personnel and management personnel, including supervision, need to install the vertical transportation machinery (including goods dual-purpose ladder).
Q:How many floors are built to use the construction elevator? With six floors?
No ~ there is no hard and fast rule, you need to choose from the construction, main consideration cost
Q:Can a construction elevator use a single cage
Can use single hanging cage, an accident is a management issue could not be struck down so many people, if such construction lifter dual-use goods elevator belongs to the people, 19 people find this elder brothers say batter to death then top with manned elevator nor safe, in fact is a regular inspection, site do not have an accident can only say that the site is too lax
Q:How many years does the construction elevator usually use?
In principle, eight years; But for eight years has scrapped section standard of standard section pillar thickness wear to design thickness of 1/4 (like this value) will be scrapped or downgrade use; After eight years, the construction elevator can also be used, but the structural parts need to be broken and the test can be used again. The pendant safety device for the construction elevator is required to be tested every year for five years.

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