Technical File of the EWD-H-XJ2 Elevator Load Weighing Device [System Introduction]
XI'AN Excellent Electromechanical Co. Ltd
http://www.xaest.com
：
(029)88416613、85565714、85568478
Add.: 7D ， Block A, Olympic Building, 14th
Chang An North Road, Xi'an, Shaanxi,China
：710061
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3
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EWD-H-XJ2 Induction Elevator Load Weighing Device Manual V2.2
●
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 Property:
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. Rated relay dynamic open, overload relay -dynamic close and output-break are
easy for customers to use.
4. The electrical property is in compliance with the standard of the International
Electro-technical Commission (IEC).
5. More accurately positioning, small overall size, easy installation and
adjustment, simple structure and low price.
● Technical Specification:
⒈
Application
Range
Applicable to all elevators with movable car platform in need of
overload signal with a inspection clearance of 7～11 ㎜.
2
Sensitivity
Rated load / 200(5.0kg when rated load is 1 ton)
3
System Error
≤1.5% (5
～
40℃)
4
Output Mode
Full load
1 pair of relay dynamic CLOSE or dynamic OPEN
contacts respectively with the capacity of DC/AC
48V/500mA.
Over load
5
Operation
Ambient
Temperature
-25～55℃
6
Power Supply
AC/DC 24V(±10%)/15mA. The operating current of the whole
machine≤100 mA.
7
Install Position
Movable elevator car platform
8
Overall Size
See figure 43X38.5X60.6mm
3
Technical File of the EWD-H-XJ2 Elevator Load Weighing Device [System Introduction]
XI'AN Excellent Electromechanical Co. Ltd
http://www.xaest.com
：
(029)88416613、85565714、85568478
Add.: 7D ， Block A, Olympic Building, 14th
Chang An North Road, Xi'an, Shaanxi,China
：710061
第
3
—
2
页
● 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 the elevator is full load, adjust this device up and down to make the red
and green flashing alternatively(if the green light flashing, please put this
device close to the magnet; if the red light flashing, please make the device
away from the magnet). When the red and green lights flashes alternatively,
fasten the device; Then, press the down button once, the green light flash 6
times, full -load debugging finishes. When green lights on, it comes to a state of
overload debugging.
5. Users put the weight in the car to the overload condition,then, press the down
button once, the green light flash 6 times,overload debugging finishes, it comes
to the normal working condition;
6. If it needs debugging, press the button on the device after power on, the red
light flashing, when the green light flashes, release the button, the green light
flashing after 4 times, it comes into the state of factory debugging.
Technical File of the EWD-H-XJ2 Elevator Load Weighing Device [System Introduction]
XI'AN Excellent Electromechanical Co. Ltd
http://www.xaest.com
：
(029)88416613、85565714、85568478
Add.: 7D ， Block A, Olympic Building, 14th
Chang An North Road, Xi'an, Shaanxi,China
：710061
第
3
—
3
页
● The principle of system wiring:
Wire
Function
Explanation
Red, black(gray)
System Operating Power
Operating Power AC/DC24V
(±10%)/100mA
gray
black
Full load relay
Dyn. open contact
contact capacity：DC/AC 48V/
500mA
purple
Orange
Overload realy
Dyn. open contact
Attention : Output wire of this device must not be connected with external power
supply to avoid everlasting damage.
Others:
Accessory: Inductive magnet [20×20×3mm
3
] 1 piece Fastening Nut Φ4X20 : 2 sets
If there is any abnormality during adjustment or operation, contact our company
directly.
Attention:
1. 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.
2. It is suitable for massive purchase.
