EWD-H-XP2 Induction Elevator Load Weighing Device Manual
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—1页
EWD-H-XP2 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:
1
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
Rated 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 30X30X58mm
3
● Installing Method:
Induced magnet
Elevator car platform
Overload Device
Connecting bracket
（users make by himself
against his needs）
Bearing beam
Car Platform installation diagram
EWD-H-XP2 Induction Elevator Load Weighing Device Manual
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
●
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.
● Adjustment
：
1. Please refer to the above figure to install this device with the connecting support (made
by the customer 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
Purple Black
Rated load relay dynamic Close contact
Contact Capacity:
DC/AC 48V/500mA
Purple Orange
Overloading relay dynamic Open contact
Purple Grey
Overloading relay dynamic Close 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:
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. This product only applies to the elevator manufacturer batch order, the sporadic
purchase not to order.
