elevator parts low cost load cellType EWD-H-P2 Elevator Load Weighing Device

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Product Description:

elevator  parts low cost load cell
Type EWD-H-P2 Elevator Load Weighing Device

INTRODTION MANUAL

This system is applicable to all elevators with movable car platform in need of overload signals. This device is of extremely high performance-price ratio. This appliance is to overcome the inherent disadvantage of the mechanical overload switch and to replace it.

Main characters:

1. Working in a contactless and inductive way. No mechanical movement itself. Being directly installed in the original place of overload switch. No necessity of changing the mechanism of elevator car.

2. Adopting strong inductive magnet, improving the anti-interference of the system to the utmost.

3. The electrical property is in compliance with the standard of the International Electro-technical Commission (IEC).

4. Rated relay dynamic open, overload relay -dynamic close and output-break are easy for customers to use.

5. More accurately positioning, small overall size, easy installation and adjustment, simple structure and low price.

Technical Specification:

Application Range

Applicable to all elevators with movable car platform in need of overload signal with a inspection clearance of 815.

2

Sensitivity

Overload turning pointRated load adjusting point±0.05

Rated loadoverload retention gap0.50mm

3

System Error

1.5% (540)

4

Output Mode

1 pair of relay dynamic CLOSE or dynamic OPEN contacts respectively with the capacity of DC/AC 48V/500mA.

5

Operation Ambient Temperature

-2555

6

Power Supply

AC/DC 24V(±10%)/15mA. The operating current of the whole machine100 mA.

7

Install Position

Movable elevator car platform

8

Overall Size

Column of Φ24×83 mm

Working Principle:

This system weighs the elevator car load based on the principle of the elastic deformation of movable elevator car platform caused by loading with the HALL sensor measuring the change of displacement, fulfilling the aim of load weighing.

Installing Method:

Adjustment

1. Please refer to the above figure to install this device with the connecting support (made by the customer himself) closing the middle part of the car platform as near as possible.

2. Let the magnet adhesive on the car platform with the marking-face right facing the induction point of the device.

3. Install and adjust this device so that the magnet on the car platform aiming at the center point of its upper face. Meanwhile, assure the end face of this device in parallel with that of the magnet.

4. When elevator is of rated load, adjust this device up and down to make the indicator just turn green, yellow one (red one +green one) turn down , at this time, fasten this device and the adjustment is finished.  

5. At the time of overload, indicator of this device keeps yellow (green+red)  

The principle of system wiring:

Wire

Function

    Explanation

Red, black

System Operating Power

Operating Power   AC/DC24V(±5%)/100mA

Yellow, White

Overloading relay dynamic Close contact

Contact Capacity:

DC/AC 48V/500mA

Blue, green

Overloading relay dynamic Open contact

Green, white

Overloading relay dynamic break contact

Attention : Output wire of this device must not be connected with external power supply to avoid everlasting damage.

Others:

Accessory: Inductive magnet [20×20×4mm3]  1 piece  Fastening Nut: 2 sets

If there is any abnormality during adjustment or operation, contact our company directly.

Attention: The inductive magnet is specially made of rare earth magnet with strong magnetism for this product. Take special care in the course of installation. Don’t let it close to the high temperature above 100℃ to avoid demagnetization and our company will not be responsible for the personal hurt and equipment damage arising from this.


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Q:The tower crane is on a surface with the construction elevator, and only 2 or 3 meters away. Is that allowed
Cranes and elevators from very close, may be the reason for the sites or the position is not reasonable, so close to the distance as long as you ensure the tower crane and tower crane arm when rotating to the above the elevator after satisfying the end, must keep more than 2 meters with elevator recent distance. Or you can refer directly to the tower crane safety code, GB5144-2006.
Q:How large a leakage protector is used for the construction elevator
If it is 33KW, direct start, single cage, 160A, leakage action current 50ma-75ma, movement time 0.1 s, electrical machine leakage protector. The best.
Q:The difference between the derrick and the construction elevator?
Derrick is with the hoist rope hoisting, referred to as goods for SSB100 type, with construction lifter model does not allow the manned, deadweight is one tons, construction lifter is said cargo amphibious ladder, with gear and rack driving, weight is 2 tons, you can have a look at the GB/T 10054-2005, the construction lifter, with clear rules.
Q:What are the requirements for the construction elevator
Actually good or bad for safety device can only judge by test and inspection in the daily operation is not sure whether it is good or bad, for those who are serving for safety device, or advice for the earlier inspection and regular test, only accomplish know fairly well, to malignant accident prevention rather than cure.
Q:When building tall buildings, the machine that USES to lift concrete to wait for tall building
The concrete pump, which can be raised in a certain radius, is the tower crane.
Q:Can construction elevators be taken by people or by goods
 yes, you can! It is to pass the authority authority to issue use card to be able to use! Construction lifts are also called elevators
Q:What is the safety device for construction elevator?
A lot of 1, anti-drop safety device 2, upper and lower limit 3, extreme limit 4, buffer spring 5, line door limit switch Single line door limit switch 7, ceiling switch 8, enclosure door lock 9, single door lock The door lock is on and off There are also many electrical safety protections
Q:Construction elevator positioning should consider which problems
It is convenient to install the wall with the wall
Q:The calculation of the use of electricity in the construction elevator
The full load is 7.5 KW. The output current is 4.2 A, is the converter 7.5 KW?
Q:The construction elevator should have those procedures
Installation and demolition plan, content can guide safe construction, and have complete approval procedure. The installation and demolition of the team must hold the certificate of safety of the above provincial competent authorities. There should be substantial content for the safety of the installation, the demolition of the staff and the safety technology of the driver. Should have basic design, hidden acceptance and concrete strength speech. The inspection and acceptance of the installation completed and the inspection presentation of the competent part. The construction elevator has a record. The elevator is using a copy of the original copy. An employee's special course post certificate. Other relevant safety information. The construction elevator is a larger vertical transport equipment, and the safety and blood lessons of previous accidents are profound. Strict inspection, the key prevention of elevator accidents, is the key link of the safety management at the construction site, and the safety management staff at all levels should be awake and familiar.

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