elevator parts low cost load cellType ECW-L120Elevator Load Weighing Device

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Product Description:


Elevator parts  low cost load cell
Type Ecw-l120 Elevator Load Weighing Device

SYSTEM INTRODUTION

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. Overall water resistant design: small size, easy installation, simple structure.

3. Wide inductive range, high precision positioning, wide range working temperature of intelligent temperature compensation.

4. Kernel is made of high precision Holzer sensor and high-performances microcomputer. Set up all working parameters on the spot.

5. Programmable control no-load auto zero capacity.

6. Output interface of analog voltage can improve elevator operation capacity when cooperating with elevator speed control.

7. Adopt strong inductive magnet, improve the anti-jamming ability to the utmost.

8. Each set of products has been strictly handled with aging treatment so as to assure its reliability.

9. System carry scientifical computing out according to mathematical equations to automatically amend detention of error.

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

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

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 3 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 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-SJ3

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

3-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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