W7ED Datasheet by Omron Electronics Inc-EMC Div

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1
New Product
Touch Sensor
W7ED
Reliable operation that requires only a light touch.
Models equipped with anti-static FG terminals
are also available.
Suitable for embedding in equipment
Enables touch sensor configurations to be created that suit your
application. Touch electrodes and touch sensor electrodes can be
fastened just using screws.
Body-to-electrode static electricity transfers can easily be
prevented using FG terminal models.
Supports 5 to 15 VDC, with open-collector output.
Features
Application Examples
Refer to Safety Precautions on page 6.
No design required
Reliable operation
No need to perform sensitivity adjustments or design circuits! Minimizes development man-hours.
L-shaped electrode type
(L-shaped electrode type)
I-shaped electrode type
Touch electrode (conductive material)
[Line-Up]
[Mounting example]
Output
=> To main board
Connects easily Touch electrodes and touch sensors can be fastened just using screws.
No PCBs, facilitating touch sensor configurations.
L-shaped electrode
Achieves reliable operation using a touch electrode that changes capacitance depending on the level of
touch.
^
^
Lights Elevators Vending Machines Faucets
W7ED- [I [I [I U... I
W7ED
2
Model Number Legend
Specifications
Electrode shape Appearance FG terminal Model
I-shaped
Without W7ED-11F
With W7ED-12F
L-shaped
Without W7ED-11L
With W7ED-12L
W7ED-@ @ @
(1) (2) (3)
(1) Detected capacitance
1: 25 pF
(3) Electrode shape
F: I-shaped
L: L-shaped
(2) FG terminal
1: Without
2: With
I
W7ED
3
Ratings and Specifications
*”Detected capacitance” refers to the detected capacitance value when capacitance is applied between the electrode and the ground terminal of
the touch sensor circuit.
Output Circuit Diagram
*We recommend connecting the FG terminal to a stable potential on the device’s frame ground.
Operation Chart
Detected capacitance *25 ± 5 pF
Power supply voltage 5 VDC (-10%) to 15 VDC (+10%)
Output Open collector (max. output current: 10 mA)
Residual output voltage 0.4 V max.
Operation mode When detecting capacitance (human touch detected): Output transistor ON
When not detecting capacitance (no human touch detected): Output transistor OFF
Current consumption 10 mA max.
Voltage influence With rated supply voltage within a range of ±10% and a rate of change for detected capacitance within ±10%
when powered using the rated supply voltage
Temperature influence Within an ambient temperature range when operating and a rate of change for detected capacitance within ±10%
at +23°C
Ambient temperature When in use: -10 to 60°C (no icing or condensation)
When in storage: -20 to 70°C (no icing or condensation)
Ambient humidity 25 to 85%RH
VCC
OUT
GND
Electrode
Power
supply
Power
supply
VCC
Electrode
OUT
GND
Touch
sensor
main
circuit
FG *
Touch
sensor
main
circuit
FG terminal not provided
(W7ED-11F, W7ED-11L)
FG terminal provided
(W7ED-12F, W7ED-12L)
Capacitance detection
Detected
Not detected
Output transistor
ON
OFF
D3 3D OI'nROh
W7ED
4
Dimensions (Unit: mm)
2.5±0.2
Terminal symbol
Model
Trademark
Electrode
(pitch: 1.25)
Lot No.
2.1
15±0.2
15±0.2
5.4
5.5
5.5
6
2.65 dia.
W7ED-11F
Note: 1. Details of connector terminal symbols are shown below.
2. Compatible housings for connector include 51021-03@@
series models from Molex.
3. The Lot No. is 4-digit number located at the position
indicated in the figure.
*Tolerance class IT16 applies to dimensions in this datasheet
unless otherwise specified.
Connector terminal No. Terminal symbol Name
1 O Output (OUT)
2 G Ground (GND)
3 V Power supply (VCC)
2.5±0.2
15±0.2
15±0.2
2.1
5.4
5.5
5.5
6
Terminal symbol
Model
Trademark
Electrode
(pitch: 1.25)
Lot No.
2.65 dia.
W7ED-12F
Note: 1. Details of connector terminal symbols are shown below.
2. Compatible housings for connector include 51021-04@@
series models from Molex.
3. The Lot No. is 4-digit number located at the position
indicated in the figure.
*Tolerance class IT16 applies to dimensions in this datasheet
unless otherwise specified.
Connector terminal No. Terminal symbol Name
1 O Output (OUT)
2 G Ground (GND)
3 FG Frame ground (FG)
4 V Power supply (VCC)
SDI: 3D I
W7ED
5
3.2±0.2
15±0.2
0.15
15±0.2
5.5±0.2
5.5
11.45±0.2
5.5
6
Terminal symbol
Model
Trademark
Electrode
(pitch: 1.25)
Lot No.
3.1 dia.
W7ED-11L
Note: 1. Details of connector terminal symbols are shown below.
2. Compatible housings for connector include 51021-03@@
series models from Molex.
3. The Lot No. is 4-digit number located at the position
indicated in the figure.
*Tolerance class IT16 applies to dimensions in this datasheet
unless otherwise specified.
Connector terminal No. Terminal symbol Name
1 O Output (OUT)
2 G Ground (GND)
3 V Power supply (VCC)
5.5
6
15±0.2
15±0.2
0.15
5.5
11.45±0.2
3.2±0.2
5.5±0.2
Terminal symbol
Model
Electrode
(pitch: 1.25)
Lot No.
3.1 dia.
Trademark
W7ED-12L
Note: 1. Details of connector terminal symbols are shown below.
2. Compatible housings for connector include 51021-04@@
series models from Molex.
3. The Lot No. is 4-digit number located at the position
indicated in the figure.
*Tolerance class IT16 applies to dimensions in this datasheet
unless otherwise specified.
Connector terminal No. Terminal symbol Name
1 O Output (OUT)
2 G Ground (GND)
3 FG Frame ground (FG)
4 V Power supply (VCC)
I
W7ED
6
Safety Precautions
Please read the matters of agreement when ordering
1. How to use
By connecting and fastening this electrode to a touch electrode
(conductive material made from metal or with a metallic plating), a
touch sensor configuration can be created with specifications that
suit your application. The electrode features a hole that enables it
to be fastened with a screw, etc.
2. FG terminals
Static electricity from the human body, etc., is capable of entering
the touch sensor via its electrode. When anti-static measures are
required, select a model (W7ED-12F or W7ED-12L) with an FG
terminal, which acts as a discharge circuit for static electricity. To
enhance the anti-static effects of the FG terminal, we recommend
connecting the FG terminal to a stable potential on the device’s
frame ground using a thick, short wire.
1. Use a touch electrode made of conductive metal or metal-plated
material.
2. Make sure to insulate touch electrode and electrode of this product
from external grounds.
3. The level of capacitance normally applied will depend on
conditions such as the size of the touch electrode or the existence
of metal around the touch electrode. Make sure to confirm that the
touch sensor operates by applying human touch to the touch
electrode with the touch electrode secured in place while in
contact with the electrode of this product.
4. Avoid use in locations subject to direct contact with liquids such as
water. Failure to do so will result in malfunction.
How to Use
Precautions for Correct Use
I-shaped electrode
(W7ED-11F, W7ED-12F)
L-shaped electrode
(W7ED-11L, W7ED-12L)
Read and understand this catalog. Warranties. Limitation on Liability- Etc. Suitability of Use. Programmable Products. Performance Data. Change in Specifications. Errors and Omissions.
Terms and Conditions Agreement
Read and understand this catalog.
Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you have
any questions or comments.
Warranties.
(a) Exclusive Warranty. Omron’s exclusive warranty is that the Products will be free from defects in materials and workmanship
for a period of twelve months from the date of sale by Omron (or such other period expressed in writing
by Omron). Omron disclaims all other warranties, express or implied.
(b) Limitations. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT
NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE
PRODUCTS. BUYER ACKNOWLEDGES THAT IT ALONE HAS DETERMINED THAT THE PRODUCTS WILL
SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE.
Omron further disclaims all warranties and responsibility of any type for claims or expenses based on infringement by the Products
or otherwise of any intellectual property right. (c) Buyer Remedy. Omron’s sole obligation hereunder shall be, at Omron’s election,
to (i) replace (in the form originally shipped with Buyer responsible for labor charges for removal or replacement thereof) the
non-complying Product, (ii) repair the non-complying Product, or (iii) repay or credit Buyer an amount equal to the purchase price
of the non-complying Product; provided that in no event shall Omron be responsible for warranty, repair, indemnity or any other
claims or expenses regarding the Products unless Omron’s analysis confirms that the Products were properly handled, stored,
installed and maintained and not subject to contamination, abuse, misuse or inappropriate modification. Return of any Products by
Buyer must be approved in writing by Omron before shipment. Omron Companies shall not be liable for the suitability or
unsuitability or the results from the use of Products in combination with any electrical or electronic components, circuits, system
assemblies or any other materials or substances or environments. Any advice, recommendations or information given orally or in
writing, are not to be construed as an amendment or addition to the above warranty.
See http://www.omron.com/global/ or contact your Omron representative for published information.
Limitation on Liability; Etc.
OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS,
WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE OR STRICT LIABILITY.
Further, in no event shall liability of Omron Companies exceed the individual price of the Product on which liability is asserted.
Suitability of Use.
Omron Companies shall not be responsible for conformity with any standards, codes or regulations which apply to the
combination of the Product in the Buyer’s application or use of the Product. At Buyer’s request, Omron will provide applicable
third party certification documents identifying ratings and limitations of use which apply to the Product. This information by itself is
not sufficient for a complete determination of the suitability of the Product in combination with the end product, machine, system,
or other application or use. Buyer shall be solely responsible for determining appropriateness of the particular Product with
respect to Buyer’s application, product or system. Buyer shall take application responsibility in all cases.
NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY OR IN LARGE
QUANTITIES WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS,
AND THAT THE OMRON PRODUCT(S) IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE
OVERALL EQUIPMENT OR SYSTEM.
Programmable Products.
Omron Companies shall not be responsible for the user’s programming of a programmable Product, or any consequence thereof.
Performance Data.
Data presented in Omron Company websites, catalogs and other materials is provided as a guide for the user in determining
suitability and does not constitute a warranty. It may represent the result of Omron’s test conditions, and the user must correlate it
to actual application requirements. Actual performance is subject to the Omron’s Warranty and Limitations of Liability.
Change in Specifications.
Product specifications and accessories may be changed at any time based on improvements and other reasons. It is our practice
to change part numbers when published ratings or features are changed, or when significant construction changes are made.
However, some specifications of the Product may be changed without any notice. When in doubt, special part numbers may be
assigned to fix or establish key specifications for your application. Please consult with your Omron’s representative at any time to
confirm actual specifications of purchased Product.
Errors and Omissions.
Information presented by Omron Companies has been checked and is believed to be accurate; however, no responsibility is
assumed for clerical, typographical or proofreading errors or omissions.
Please check each region's Terms & Conditions by region website.
OMRON Corporation
Electronic and Mechanical Components Company
Regional Contact
Cat. No. A292-E1-02
0819 (0219)
Americas Europe
https://www.components.omron.com/ http://components.omron.eu/
Asia-Pacific China
https://ecb.omron.com.sg/ https://www.ecb.omron.com.cn/
Korea Japan
https://www.omron-ecb.co.kr/ https://www.omron.co.jp/ecb/
In the interest of product improvement, specifications are subject to change without notice.
© OMRON Corporation 2019 All Rights Reserved.

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