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: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:What is the main function of the construction elevator safety guard
For safety device of construction hoist main effect is in the process of elevator used in times of emergency power, hit the brakes, let hoisting cage security attached on the guide rail frame, prevent the hoisting cage falling!
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:The construction of more than many floors must be used for construction elevators
The average height is more than 12 stories. Construction elevators are often called construction elevators, but construction lifts include a broader definition, and construction platforms are part of the construction elevator series. Simple construction elevator is by car, driving mechanism, standard section, attached to the wall, chassis, fence, electrical system and so on several parts, manned cargo construction machinery is a frequently used in construction, because of its unique enclosure structure make it take up both comfort and safety, construction elevator is usually used with tower crane on the construction site, the average load in 1-3 tons, running speed is 1 to 60 m/min. The construction elevator of our country is more and more mature, and gradually goes to the international.
Q:There are differences between the construction elevator and the construction elevator
When it comes to the construction elevator, people will immediately think of construction lifter, the construction elevator and elevator is just a different name or have their own respective working principle? By below small make up to you to introduce: construction elevator is often referred to as construction lifter, but construction lifter, including the definition of a broader platform construction also belongs to the construction lifter series.
Q:Why is the construction elevator not up to the roof
Construction elevators are often called construction elevators, but construction lifts include a broader definition, and construction platforms are part of the construction elevator series. Simple construction elevator is by car, driving mechanism, standard section, attached to the wall, chassis, fence, electrical system and so on several parts, manned cargo construction machinery is a frequently used in construction, because of its unique enclosure structure make it take up both comfort and safety, construction elevator is usually used with tower crane on the construction site, the average load in 1-3 tons, running speed is 1 to 60 m/min. The construction elevator of our country is more and more mature, and gradually goes to the international.
Q:How many people are there for construction workers
The elevator is a vertical elevator with electric motors, which is equipped with box pods for multi-storey building and carrying goods. There is also a terrace, which is running continuously on the crawler, commonly known as escalator or automatic walkway. A fixed lifting device for the floor. Vertical elevator has a car, running on at least two columns of the vertical or Angle is less than 15 ° between the rigidity of rail. The size and structure of the car is convenient for passengers to enter or unload cargo. Traditionally, the elevator is the general term for vertical transportation in buildings, no matter how they are driven. Speed can be divided into low speed elevator (1 m/s), rapid elevator (1 ~ 2 m/s) and high speed elevator (2 m/s). Hydraulic elevators were introduced in the mid-19th century and are still being used in low-rise buildings. In 1852, the United States developed a safety elevator for wire rope lifting. In the 1980s, there was further improvement in drivers, such as the electric motors, which were driven by worm gears to turn the winding drum and balance weight. At the end of the 19th century, the friction wheel drive greatly increased the lift height.
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:The calculation of the use of electricity in the construction elevator
Use electricity in the field (1) lifting equipment class: tower crane 2, construction elevator 3; According to the table, K = 0.3 cos phi = 0.7 tg phi = 1.02 JC = 40% (temporary load) Pe = 2 times 63 + 3 times 11 = 159 (kW) And then power: PS = 2 times Pe = 2 times 159 = 201 (kW) Pjs1 = K * PS = 0.3 * 201 = 60.3 (kW) Qjs1 = tg phi by Pjs1 = 1.02 times 60.3 = 61.5 (kVA)
Q:The construction elevator should have those procedures
Construction elevator installation unit must have issued by the construction administration department of lifting equipment installation project specialized contracting qualification and construction enterprise safety production license, and within the scope of the qualification licensing business engaged in the installation of construction lifter removed.

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