Technical File of the EWD-H-XP1 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
2
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EWD-H-XP1 Induction Elevator Load Weighing Device Manual V2.2
● This system is applicable to all elevators with movable car
platform and energy-saving operation escalator 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 contact less 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
Electromechanical Commission (IEC).
4.More accurately positioning, small overall size, easy installation and adjustment,
simple structure and low price.
●
Technical Specification:
●
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.
⒈
Application Range
Applicable to all elevators with movable car platform in need of
overload signal with a inspection clearance of 8～15 ㎜.
2
Sensitivity
Overload turning point≤Rated load adjusting point±0.05
㎜
3
System Error
≤1.5% (5～40℃)
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
-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 30X30X58mm
3
Technical File of the EWD-H-XP1 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
2
—
2
页
●
Installing Method:
●Adjustment：
refer
above
install
with
(made
himself) close to 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 aims 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 loaded, adjust this device up and down to make the indicator
just turn from dark to bright (or oscillating), at this time, fasten this device and the
adjustment is finished.
● The principle of system wiring:
Wire
Function
Explanation
Brown Blue
System Operating Power
Operating Power AC/DC24V(±10%)/100mA
Black Gray
Overloading relay dynamic Close contact
Contact Capacity:
DC/AC 48V/500mA
Orange Purple
Overloading relay dynamic Open contact
Output wire of this device must not be connected with externalpower supply to
avoid everlasting damage.
Others: Accessory: Inductive magnet [20×20×4mm3]1piece 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.