Technical File of the EWD-H-XJ4 Intelligent Elevator Load Weighing Device [User’s Guide]
USER’S GUIDE
EWD-H-XJ4
(V2.2)
Xi'an Excellent Electromechanical Co., Ltd.
Technical File of the EWD-H-XJ4 Intelligent Elevator Load Weighing Device [User’s Guide]
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Table of Contents
Product Overview
1、Product Appearance, inner structure and interface directions
…………
2、Exterior dimensions and installing diagram
…………
Installation & Adjustment
3、System Adjustment and directions
…………
Implication and Adjustment
Method of the Operation
Parameters
4、System Parameters Adjustment
…………
5、Explanation of the Meaning of Parameter P
…………
Indicating Code Explanation
6、Explanation of System Normal Operation Code
…………
7、Explanation of other displaying
…………
How To Do?
8、Brief introductions of conditions
…………
9、How to do setting adjustment of an elevator with the known “no load→rated
load”compressing deformation？
…………
10、How to repeat the Autotune operation for the system？
…………
11、How to modify the system output conditions after Autotune？
…………
12、How to use 20% rated load autotune?
…………
13、Car shock rubber compression exceeds the sensor detection range
…………
14、On the use of "load increase, away from" working methods of operation
…………
System Characteristics
15、 Working principle of“EWD-H-XJ4”elevator weighing device
…………
16、Main Properties
…………
17、Technical Items
…………
Promise
…………
Others
…………
Attention: This system is applicable an elevator with「moveable car platform」.Before use, please read the following content carefully.
The Inductive magnet is specially-made rare-earth magnet for this product with strong magnetic force. Special care should
be taken during installation. Under no condition should it be away from the high temperature above 100℃ to avoid
demagnetizing and the equipment damage and personal hurt from this is beyond our responsibility.
Notice：Our part is just responsible for the products quality in the guarantee period under any condition.
Declaration：Our company reserves the right of changing products for technical improvement and the related technical parameters
should be referred to the USER’S GUIDE along with the products.
Technical File of the EWD-H-XJ4 Intelligent Elevator Load Weighing Device [User’s Guide]
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Product Overview
1、 Product Appearance, Interior Structure and Interface Directions：
EWD-H-XJ4
Appearance
Interior
Structure
Interface Directions
P1
Com
Common terminal
J1,J2,J3,j4 is 3 channel Solid State Relay Output
P2
J1
P3
J2
P4
J3
P5
J4
P6
None
P5
System Power Source
：
DC/AC24V(±10%)／150mA
Absolutely not to connect the output terminals of this device except“P7 、P8”to exterior power source directly, and the permanent
damage from this is beyond our responsibility.
P6
1. J1～J3 are interior solid state relays with Max. loading capacity of DC/AC 32V/50mA。
2. To be programmed as “no load～over load”output signal to participate in elevator logic control.
Technical File of the EWD-H-XJ4 Intelligent Elevator Load Weighing Device [User’s Guide]
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2、Exterior Dimensions & Installing Scheme
Exterior Dimension
Notice on Installation
1. Install this device as near as possible to the center of elevator car platform or the
original place of elevator overload switch. The system should be installed on the
bottom bearing beam of elevator car platform with the inductive magnet
adhering to the moveable car platform and the marking surface facing to the
inductive point of the weighing device.
2. The system supporting frame should be made according to elevator concrete
situation with the uneasily deforming material of thickness more than 4mm or
with enforcing plate to avoid swaying.
3. Adjust this device so that the car platform magnet aiming to the center point of its
upper section. Meanwhile, assure that the section of this device parallel to that of
the magnet.
Installing Method
电梯下承重
活动轿
感应磁
检测间
称重装
连接支
图
[3]
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3、System Adjustment and Directions
1 System Positioning Operation：
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2 No load and Rated Load Operation Parameters for Autotuning：
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3 System Adjustment under other conditions：
For the following reason
，
it is necessary to modify the operating parameters of this device.
①
For elevator car decoration change
，
the dead weight of the moveable car platform changes
；
②The car platform appears mechanical deformation；
③The temperature difference between winter and summer has an unneglecting effect on the elastic coefficient of car platform
damping rubber
；
④
The car platform appears damping rubber appears aging or deforming
；
⑤The elevator overruns at the top or at the bottom；
⑥The weighing device becomes slack at the fixing end.
Operation Parameters Adjustment and the Implication
4
、
System Operation Parameters Adjustment (Annotation
：
* represents for a hexadecimal value
of “0
～
9,A
～
F”.)
①Simultaneously press 【▲】and【▼】on system control keypad to power on ，this moment 〖PP〗 will be displayed aglimer,
that means entering operation parameters modifying status.
②
Release
【▲】and【▼】
buttons
，
system will display
〖
P*
〗
and
〖
**
〗
alternately.
〖
P*
〗
is an indication of system operation
parameters；〖**〗is the interior data value of〖P*〗.
③When displaying〖P*〗，press【▼】，indication of system operation increases；press【▲】，indication decreases.
④
When displaying
〖
**
〗，
press
【▼】，
data value increases
；
press
【▲】，
data value decreases.
⑤
Release buttons
，
system displays operation indication and configuring data alternately.
⑥
To modify other configuring datum, repeat the operation in item 3, item 4, item 5.
⑦At the moment when system displays 〖P*〗，Simultaneously press 【▲】and【▼】，system will save modified datum for
future use. This moment, system displays 〖 Pn 〗 for 1 second. System operation parameters modification of this time is
completed.
Example：Modify parameter P2 to 16；
①Simultaneously press 【▲】and【▼】on system control keypad to power on ，this moment 〖PP〗 will be displayed aglimer,
that means entering modifying status.
②
Release
【▲】and【▼】
buttons
，
system will display
〖
P0
〗
and
〖
**
〗
aglimer
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③When displaying〖P0〗，press【▼】to increasing it to〖P2〗；
④Release button【▼】，system alternately displays〖P2〗and〖**〗；
⑤When displaying〖**〗，press【▲】and【▼】to regulate its value as〖16〗；
⑥
Release button
，
system alternately displays
〖
P2
〗
and
〖
16
〗；
⑦
At the moment when system displays
〖
P2
〗，
Simultaneously press
【▲】and【▼】，
system will save modified datum for
future use. This moment, system displays〖Pn〗for 1 second. System operation parameters modification is completed.
5、Implication of parameter P：
①Directions of Parameter P0 [System Operation Mode]：
Setting
Explanation
Default Setting
Normal Value
00
Normal Operation
01
00
This value will
be modified in
the course of
autotuning.
01
Sensor installing positioning, system no-load and rated-load autotuning
operation.
02
Specifying system no-load autotuning operation.
03
Specifying system Rated-load autotuning operation.
04
Select “20% rated load”autotuning operation
，
being convenient for users special
adjustment.
25～99
×0.1mm
For elevator with known “no-load→rated-load”compressing moveable car
platform damping rubber pad，it may be set manually. The system may be put
into use after system installation positioning. (This adjustment is very
convenient for elevator manufacturers. For more detail, refer to Chapter 10.)
②Directions of Parameter P1
Setting
Explanation
Default Setting
User Setting
00
0-Cascade output mode
00
User needn't to modify
③Directions of Parameter P2 [Light-load parameter setting]：
Setting
Explanation
Default Setting
User Setting
00～30
Light-load signal output
05
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④Directions of Parameter P3 [Half-load parameter setting]：
Setting
Explanation
Default Setting
User Setting
P2+1～60
Half-load signal output
30
⑤Directions of Parameter P4[Heavy-load parameter setting]：
Setting
Explanation
Default Setting
User Setting
P3+1～90
Heavy-load signal output
70
⑥Directions of Parameter P5 [Full-load parameter setting]：
Setting
Explanation
Default Setting
User Setting
P4+1～99
Full-load signal output
90
⑦Directions of Parameter P6 [System overload coefficient]：
Setting
Explanation
Default Setting
User Setting
00～20
Rated-load+(rated-load ×P6) %, Output overload signal
05
⑧Directions of Parameter P7 [Operation Status setting of Solid state relay“J1”]：
Setting
Explanation
Default Setting
User Setting
00
No-load dynamic output
00
(No-load Dynamic Close )
⑨Directions of ParameterP8 [Operation Status setting of Solid state relay “J2”]：
Setting
Explanation
Default Setting
User Setting
00
～
1F
Half-load dynamic output
02(Half- load dynamic close)
⑩Directions of Parameter P9 [Operation Status setting of Solid state relay “J3”]：
Setting
Explanation
Default Setting
User Setting
00
～
1F
Full-load dynamic output
04(Full-load dynamic open)
11.Directions of Parameter PA ：[Operation Status setting of Solid state relay “J4”]
Technical File of the EWD-H-XJ4 Intelligent Elevator Load Weighing Device [User’s Guide]
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Setting
Explanation
Default Setting
User Setting
00～1F
Over-load dynamic output
0F(Over-load dynamic close)
12.Directions of Parameter D [Displacement-expanding Setting]：
Setting
Explanation
Default Setting
User Setting
01
Displacement approach, 10mm effective
01
Note:① If the setting value is not specified, the weighing device will not work normally.
②
During the regular maintenance of the elevator, the self-learning work of the weighing device should be carried out again.
Explanation of Displaying Code:
6、System Normal Operation Code: (“W”is the present effective load)
Display Code
Indication
System
displays〖L*〗
L0
No-load car
Output No-load signal
Output no-load signal
L1
Light-load car
Output Light-load signal
Output Light-load signal
L2
Semi-load car
Output Haff-load signal
Output Hall-load signal
L3
Heavy-load car
Output Heavy-load signal
Output Heavy-load signal
L4
Rated-load car
Output Rated-load signal
Output Rated-load signal
LF
Over-load car
Output Over-load signal
Output Over-load signal
1
Press and hold the [▲] button, if the weighing device displays [4.7], it means that the maximum compression
deformation of "no-load to rated-load" at the bottom of the elevator car is "4.7mm", which can be memorized by the
user for future use;
2
Press and hold the [▼] button weighing device will display the load variable of the current moving car bottom. If
shown, [1.2] indicates that it has been compressed by "1.2mm" since "no load".
For user to save：the code of this elevator
Rated-load compression variable:mm
7、Code for Other Operation and Failures
Display Code
Indication
Solution
Technical File of the EWD-H-XJ4 Intelligent Elevator Load Weighing Device [User’s Guide]
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Display Code
Indication
Solution
1
YS
System Startup
2
Pc
System Resetting
3
PP
Get into the status of operation parameters modification
4
PL
Self-learning no-load parameter (static display indicates ready state, flashing display indicates
complete detection)
5
PH
Self-learning rated-load parameter (static display indicates ready state, flashing display indicates
complete detection)
6
LL
Installation
and
positioning
Too big Positioning
Move this device closing to the magnet
7
LH
Too small Positioning
Move this device away from the magnet
8
Lo
Accurately Position
9
LP
Interior Auto Correction
10
P*
System Configuration Indication
11
Pn
Saved
12
EA
Saving Failure
Modify the operation parameters
13
EJ
Without this system setting
Check system setting value
14
ED
Car platform deformation deficient
Affirm elevator in the condition of rated load
15
EC
Car platform deformation overflowing
Damping rubber is too soft，adjust PD
16
EH
Incorrect installation place of the magnet
Check the magnet installation place
17
EL
Incorrect installation place of the magnet
Check the magnet installation place，pay special
attention to polarity and distance.
How to do？
8、Brief Analysis of Other Conditions：
①
After installation of this weighing device, weighing signal changes in the course of operation
？
The elevator load output value is not held after elevator starts, adjust the relative items of the inverter and controller.
②After long-term of operation, system no load zeroing point appears larger deviation？
May be caused by the reason described in section 3,Chapter 3. Set system Autotuning mode to calibrate again
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③After the elevator weighing is changed from heavy load to light load, heavy load signal is still displayed？
The movement of the moveable car platform is blocked, it is not reset after pressing. Solute the relevant mechanic problems.
④System output signal doesn’t change linearly along with the change of load？
Check the structure of the moveable car platform，pay more attention that there should only be one pair of damping rubber or
spring moving relatively to the moveable car platform.
⑤During the system operation, analog output is abnormal or system resetting or speed-regulator cooperation is abnormal？
It may be caused by system power source series interference. Select another group of power to supply the system, or to provide
an exterior power of AC/DC 24V/300mA to supply.
9、How to set an elevator with known “no-load→rated load”compression deformation？
For example：The max “no-load→rated load”compression deformation of this elevator is 5.8mm.
Operation
⒈
Modify“P0=58”and save it. Refer to chapter 5
；
⒉After system restarting,〖LP〗is displayed. Wait until〖LL〗,〖Lo〗or〖LH〗 is displayed；
⒊When the car is empty，adjust system installation position to make it display〖Lo〗，fasten it；
⒋
When
〖
Lo
〗
is displayed
，
press
【▲】and【▼】
ssimultaneously
，
system begins to autotune no-load operation parameters
；
⒌After〖PL〗is display aglimer for 5 second, the whole process of autotuning is finished.
10、How to do Re-Autotune operation for system?
Method 1：Simultaneously press【▲】and【▼】son system control panel to power on. This moment, system aglimmer
displays〖PP〗and 〖P-〗.Keep 15 seconds，system will display〖Pn〗.On that occasion，all operation parameters
reset to default settings.
Method 2
：
Modifying parameter P0=0A or user specified operation code will reset system immediately to default status. But
for users with specified code. The method is mentioned in Chapter 5.
11、How to modify output status of a system after autotuning is finished？
Modify the corresponding controlling parameters of parameter P respectively. The method is mentioned in Chapter4.and 5.
12、How to adopt 20% rated load for rated load autotune？
Modify P0=04. After〖Lo〗positioning and no-load〖PL〗autotuning，in the period of system displaying〖PH〗，load 20% of the
rated load
，
press
【】，
system displaying
〖
L1
〗
means the end of adjustment. This is an auxiliary method when 100% autotuning
can be done.
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13、The compression of car damping rubber exceeds the sensor inspection range？
Before autotuning, be assure to select “PD”=“02/03”and save it. Then, readjusting the installing position of the
sensor is OK (See parameter PD for more details).
14、On adopting operation of “load increasing，displacement aloofing”method？
Before autotuning, be assure to select “PD”= “1*” and save it. Then, readjusting the installing position of the sensor is OK.
System Characteristics
15、Working principle of “EWD-H-XJ4”elevator weighing device
With the development of elevator technology, the influence of elevator weighing device on its performance has reached a
point that cannot be ignored. Elevator weighing device of high precision, high reliability, multi-function demand is imminent.
With the continuous development of sensor technology and microcomputer, the high precision Hall sensor is used to detect the
displacement change of elevator car bottom due to the load. At the same time, the single chip microcomputer is used to carry
out scientific calculation and processing, so that the device can realize the function of weighing the elevator car payload..
16、Main property
⑴ Working in a contactless and inductive way. No mechanical movement. Solid-state relay outputs. Being
directly installed in the original place of overloading switch. No necessity of changing the mechanism of
elevator car.
⑵ The whole system is designed in the waterproof structure with small overall size, easy installation and
adjustment and simple structure.
⑶ Wide induction range, high accuracy positioning, intelligent temperature compensation making the range of
operating temperature wider.
⑷ The inner core consists of Hall sensor of high accuracy and single-chip microprocessor of high efficiency. All
parameters may be set on the field.
⑸ Adopting strong inductive magnet, improving the anti-interference capability of the system to the utmost.
⑹ Each set of products undergo a rigorous aging process to ensure reliable work.
(7)System based on mathematical equations for scientific computing, automatic detection error correction
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⑻ On-site adjustment is easy, either by autotuning or by manual displacement setting.
(9)The independent development of the programmable output signal control method can be used for all kinds of
traction elevator with moveable car platform.
17、Technical specifications：
⒈
Application
Being applicable to all moveable car platform elevators
，
with an auto inspection range of
(2.00mm ≤car platform movement≤10.00mm)
；
manual setting displacement range 2.5
～
9.9mm
(relate to parameter PD)
⒉
Sensitivity
Elevator rated load/200 (With the rated load of 1T, it is 5.0Kg)
⒊
System Error
≤1.5％(-20～55℃)
In the whole temperature range≤3.0
％
⒋
Non-Linearity
≤1.0％
⒌
Output
Mode：
Solid-state
Relay
Programmable
universal signal
①3/5 channel programmable output modes are: No load, light load,
semi full load, heavy load, rated load, overload (customer may set
the changing range freely).
②Each channel can be programmed as dynamic Close or Open
contact.
③
Contact Capacity:DC/AC 32V/15mA
。
6
Working
Temperature：
-20～55℃
7
Relative Humidity：
20%～99％RH
8
Reaction Time
≤0.25 Seconds
9
Power Supply：
AC/DC 24(±10%)V／150mA
10
Installation Place
：
Moveable car platform of elevator
11
Overall Size
：
45×45×90 mm
3
Technical File of the EWD-H-XJ4 Intelligent Elevator Load Weighing Device [User’s Guide]
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：The intension exceeding the limit parameters listed above may result in the abnormality or permanent damage to the system.
Promise
⑴If this system appears any quality problem of product itself in 1 year after delivery, it will be replaced freely
（damage of the product seal will not be dealt with）。
⑵For any requirement of special functions, make it out by mail.
⑶Any system abnormality in adjustment or operation, please contact our company directly.
Others
1.Accessory
Instruction Manual
1 piece
Fixing Screw setφ4*20
2 sets
Inductive magnet [20×20×4mm
3
]
1 piece
2..address book：
029-88416613 85565714/8478
7D，Block A, Olympic Building, 14th C
hang An North Road, Xi'an
029-85565714-886
710068
Technical Support:0086-18092639752/0086-18092639750