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Ultrasonic Displacement Sensor
E4PA-N
Now, more advanced with a new mutual interference prevention function.
Application Examples
Detecting slackness in sheet materials Detecting liquid levels Remotely detecting LCD wafers Detecting dies
Features
High-precision detection with a The Sensor is ultrasonic, so it is not affected by the
wide range of measurements.
Four types of Sensors are available with maximum sensing distances of 0.5 m, 2 m, 4 m, and 6 m. With the 0.5-m type, a repeat accuracy of 1 mm or better has been achieved.
color of objects.
A variety of materials can be measured, including transparent and reflective objects. Measurements are performed with no contact, so even highly-viscous liquids are no problem.
OK
OK
OK
OK
Transparent objects
Black objects
A setting plug with a temperature compensation
Reflective objects
Highly viscous liquids
function makes it easy to set the sensing range.
The sensing range can be set by the Setting Plug, which is included with the Sensor. No special controller is required. The Setting Plug's built-in temperature sensor provides superior temperature characteristics of 1% FS.
The mutual interference prevention function allows
up to five Sensors to be used in close proximity.
Setting plug
E4PA-N Ultrasonic Displacement Sensor
1
Ordering Information
Sensors
Sensing range 50 to 500 mm 120 to 2,000 mm 240 to 4,000 mm 400 to 6,000 mm Model E4PA-LS50-M1-N E4PA-LS200-M1-N E4PA-LS400-M1-N E4PA-LS600-M1-N
Accessories (Order Separately)
Sensor I/O Connectors
Cable Standard Cable Straight Shape 2m 5m 4-to-5 Conductor Conversion Cable (See note.) 0.3 m --Cable length 5 conductors Model XS2F-D521-DG0-A XS2F-D521-GG0-A E4PA-C01
Note:
When you use a 4-pole sensor connector cable, the E4PA-C01 is useful for converting from 4 to 5 poles. If this is done, however, you cannot use the mutual interference prevention function.
Setting Plug
Shape Model E4PA-P1 Remarks Attached to each Sensor
Specifications
Ratings/Characteristics
Item Sensing range Dead band distance Standard sensing object Applied frequency Response time Power supply voltage Power consumption Analog output Protective circuit Mutual interference prevention cycle time Linearity Repeat accuracy (See note.) Temperature influence Voltage influence Ambient temperature Ambient humidity Insulation resistance Dielectric strength Vibration resistance Shock resistance Connection method Degree of protection Weight (packed) Materials E4PA-LS50-M1-N 50 to 500 mm 0 to 50 mm 100 x 100 mm flat plate Approx. 380 kHz 63 ms max. 1,800 mW max. Current output: 4 to 20 mA (Allowable load resistance: 500 max.) Voltage output: 0 to 10 V (1,000 min.) Load short-circuit protection, mutual interference prevention 10 ms 1% FS max. 0.1% FS max. 1% FS of output value at +23C in the temperature range of -10 to 55C 5% FS max. within rated power supply voltage range Operating: -10 to 55C (with no icing or condensation) Storage: -40 to 85C (with no icing or condensation) Operating and storage: 35% to 85% (with no condensation) 50 M min. (at 500 VDC) between current-carrying parts and case 1,000 VAC (50/60 Hz) for 1 min between current-carrying parts and case Destruction: 10 to 55 Hz, 1-mm double amplitude for 2 hours each in X, Y, and Z directions Destruction: 300 m/s2 three times each in X, Y, and Z directions 5-conductor connector IEC60529: IP65 Approx. 240 g Case: Sensing surface: Clamping nut: Operation Manual Stainless steel (SUS303) PBT resin, polyurethane, glass epoxy resin Stainless steel (SUS303) Approx. 320 g Approx. 400 g 34 ms 77 ms 143 ms Approx. 180 kHz 195 ms max. Approx. 85 kHz 440 ms max. Approx. 65 kHz 850 ms max. E4PA-LS200-M1-N 120 to 2,000 mm 0 to 120 mm E4PA-LS400-M1-N 240 to 4,000 mm 0 to 240 mm E4PA-LS600-M1-N 400 to 6,000 mm 0 to 400 mm
10 to 30 VDC; ripple (p-p): 10% max.
Accessories
Note:
Values are given one hour after power-up. The outputs may fluctuate due to external disturbances.
2
E4PA-N Ultrasonic Displacement Sensor
Engineering Data
Sensing Distances (Typical Examples)
E4PA-LS50-M1-N
Distance Y (mm)
200 150 100 50 0 -50 -100 X -150 Y -200 -400
E4PA-LS200-M1-N
Distance Y (mm)
400 300 200 100 0 -100 -200 X -300 Y
100
200
300
400
500
600
Distance X (mm)
0.5
1
1.5
2
2.5
Distance X (m)
E4PA-LS400-M1-N
Distance Y (mm)
1,000 800 600 400 200 0 -200 -400 -600 -800 -1,000 X Y 1 2 3 4 5
E4PA-LS600-M1-N
Distance Y (mm)
1,000 800 600 400 200 0 -200 -400 -600 -800 -1,000 X Y 1 2 3 4 5 6 7
Distance X (m)
Distance X (m)
Output Circuit
1 5 10 to 30 V Mutual interference prevention
Sensor I/O Connector
Class
Terminal No. Wire color code
2 4 1 3 5
E4PA-N
4 2 3 0 to 10 V
4 to 20 mA Ri500
Wire color code Brown White Blue Black Gray
PIn No. 1 2 3 4 5
Application
Rv1,000 0V
Brown White Blue Black Gray
For DC
Power supply (+V) Voltage output Power supply (0 V) Current output Mutual interference prevention input
Connector pin arrangement
1 254 3
Contact Arrangement (Mating Surface)
2 5 1 4 3
E4PA-N Ultrasonic Displacement Sensor
3
Nomenclature
Sensor Setting Plug
Setting Plug connector
M12 connector for Sensor I/O (5 poles)
Triangular mark on Setting Plug Notch on Sensor RUN indicator (yellow) Notch on Sensor Power indicator (green)
RUN indicator (yellow) Error indicator (red)
Setting Plug
The E4PA-N is set up by aligning the notch on the Sensor with one of the triangular marks on the Setting Plug and inserting the Setting Plug into the Sensor.
(1) Output increase mode Nearest point Farthest point 20 mA/10 V
Position A1 A2 E2/E3 (See note 1.)
Function Nearest sensing point A1 Farthest sensing point A2 Analog output characteristics 1. Increase: As the distance increases, the output increases. (LED A1 flash.) 2. Decrease: As the distance increases, the output decreases. (LED A2 flash.) 3. Output from 0 mm: Increases from the sensing surface to point A2. (LED A1 and A2 flash.) (See note 2.)
(3) Output from 0 mm
4 mA/0 V
20 mA/10 V (2) Output decrease mode 4 mA/0 V 20 mA/10 V
T
Temperature compensation setting (normal operating condition) 1. Analog Output Characteristics when Setting Plug is inserted at E2/ E3 Position: The analog output characteristics will change from (1) to (2) to (3), in that order, each time the Setting Plug is inserted with the E2/E3 position aligned with the notch on the Sensor. 2. The analog output value can be compensated so that the sensing surface (0 mm) of the Sensor is 4 mA/0 V regardless of the nearest sensing point setting. This function is useful when using Controllers without a scaling function. Sensing is not possible, however, for characteristics within the dead band distance and current/voltage output values may not be stable.
0 mm A1 Dead band distance
A2
Note:
Indicator Display and Analog Output Characteristics
Status Normal operation Temperature compensation Setting Plug not inserted Malfunction sensing (when detecting external disturbance) Sensing distance A1 setting Sensing distance A2 setting Analog output characteristics setting With sensing object Without sensing object With sensing object Without sensing object (1) Output increase mode (2) Output decrease mode (3) Output from 0 mm Power turned ON None E2/E3 A2 A1 Setting Plug position T Power indicator (green) Lit Not lit Not lit Error indicator (red) Not lit Lit Flashing RUN indicator A1 (yellow) Lit/Not lit (See note 1.) Lit/Not lit (See note 1.) Lit/Not lit (See note 2.) Flashing Flashing Not lit Not lit Flashing Not lit Flashing (synchronous) Previous status RUN indicator A2 (yellow) Lit/Not lit (See note 1.) Lit/Not lit (See note 1.) Lit/Not lit (See note 2.) Not lit Not lit Flashing Flashing Not lit Flashing Flashing (synchronous) Previous status Analog output Present value Present value No change or unstable No change No change No change No change No change No change No change No change
Flashing Not lit Flashing Not lit Lit Lit Lit Flashing
Not lit Flashing Not lit Flashing Not lit Not lit Not lit Not lit
Note:
1. Lit: The sensing object is within the sensing range. Not lit: The sensing object is not within the sensing range. 2. Output indicator just prior to occurrence of malfunction.
Mutual Interference Prevention
The E4PA-N provides a sync input to prevent mutual interference. When the fifth pin of the Sensor I/O Connector's M12 Connector is interconnected, mutual interference can be prevented for up to five Units. The Sensors will mutually oscillate, however, causing a delay in measurement time by the mutual interference cycle time per Sensor x number of Units + response time. When the sync inputs are not connected, the mutual interference prevention function is disabled. (For example, if three E4PA-LS200-M1-N are connected, the response time for one Sensor is 34 ms x 3 Sensors + 195 ms = 297 ms.
4
E4PA-N Ultrasonic Displacement Sensor
Operation
Setup and Operating Procedure
The E4PA-N is factory-set for the decrease mode for analog output characteristics and for the maximum sensing range. These settings enable scaling with the connected device (e.g., the K3NX). In this case, only step 4 is required. To change the analog output range, follow steps 1 to 4 below.
1. Preparation for Setup
Step 1 2 3 Setting/Operation Remove the Setting Plug. Turn ON the power. (See note.) Proceed to Step 2 Setting Sensing Range.
3. Setting Analog Output Characteristics Mode
Step 1 Setting/Operation Insert the Setting Plug at the E2/E3 position. (Align the notch on the Sensor with the E2/E3 triangular mark on the Setting Plug.)
E2/E3 position
Note: Do not insert the Setting Plug yet. It must be inserted within five minutes after the power is turned ON, however, or the setup will not be possible. If that happens, power up again and start over.
2. Setting Sensing Range
Step 1 Setting/Operation Place the sensing object at the nearest point within the sensing range.
Sensing object
A2 RUN indicator (yellow) flashing: Analog output characteristics: Decrease mode In this mode, the analog output decreases (20 to 4 mA/10 to 0 V) as the E2 sensing object nears the E4PA within the sensing range. A1 A2 The mode changes when the Setting Plug is reinserted at the E2/E3 position.
E3
50 mm (for E4PA-LS50-M1-N)
2
Insert the Setting Plug at the A1 position. (Align the notch on the Sensor with the A1 triangular mark on the Setting Plug.) The power indicator (green) and the A1 RUN indicator (yellow) with flash, showing that the near distance has been correctly set.
A1 RUN indicator (yellow) flashing: Analog output characteristics: Increase mode In this mode, the analog output increases (4 to 20 mA/0 to 10 V) E3 E2 as the sensing object nears the E4PA within the sensing range. A1 A2
A1 position
The mode changes when the Setting Plug is reinserted at the E2/E3 position. A1 and A2 RUN indicators (yellow) flashing at the same time: Analog output characteristics: Output from 0 mm In this mode, the analog output decreases (20 to 4 mA/10 to 0 V) as the sensing object nears the E3 E2 E4PA between the farthest sensing point and 0 mm. A1 A2
E2 A1 A2
E3
3
Remove the Setting Plug. (In this state, the setting is confirmed and recorded.) Place the sensing object at the farthest point within the sensing range.
Sensing object
4
Note: Check the input impedance of connected devices and the analog output in Ratings/Characteristics (see page 2).
2 After the analog output characteristics have been set, remove the Setting Plug.
500 mm (for E4PA-LS50-M1-N)
5
Insert the Setting Plug at the A2 position. (Align the notch on the Sensor with the A2 triangular mark on the Setting Plug.) The power indicator (green) and the A2 RUN indicator (yellow) will flash, showing that the far distance has been correctly set.
A2 position
3
Proceed to Step 4 Setting Temperature Compensation Mode.
E2 A1 A2
E3
4. Setting Temperature Compensation Mode
Step 1 Setting/Operation Insert the Setting Plug at the T position. (Align the notch on the Sensor with the T triangular mark on the Setting Plug.)
6
Remove the Setting Plug. (In this state, the setting is confirmed and recorded.) Proceed to Step 3 Setting Analog Output Characteristics Mode.
7
T position
2
Leave the Setting Plug inserted where it is. (This completes the setup.)
Note: To maintain the temperature compensation, leave the Setting Plug inserted during operation. If it is removed from the E4PA, the temperature compensation will be disabled. Note: If the reflection from the Sensor is extremely weak, or if the sensing object is set outside of the sensing range, the error indicator (red) will flash to show that the sensing range is not accurately set. If the Setting Plug is left removed for five minutes or longer, temperature compensation will be disabled (status before setting).
If it becomes necessary to change the settings for step 2 (Sensing Range) or step 3 (Analog Output Characteristics Mode) after steps 1 through 4 have been completed, the contents of all the previous settings will be remembered, so only the items to be changed need to be reset. Go through the steps in order, from 1 to 4, and reset only the items to be changed.
E4PA-N Ultrasonic Displacement Sensor
5
Safety Precautions
Precautions for Safe Use
Design
Power Supply
If possible, use a power supply without overcurrent detection. This Sensor uses a DC-DC converter in the power supply circuit. If the power supply has overcurrent detection, the protective circuit may be activated by the inrush current. Recommended power supply: OMRON S82-series Power Supply (Capacity: 15 W min.)
Model E4PA-LS50-M1-N E4PA-LS200-M1-N E4PA-LS400-M1-N E4PA-LS600-M1-N 2 m min. 8 m min. 16 m min. 25 m min.
Facing Arrangement
E4PA-N E4PA-N
X
Y
Wiring
Power Supply Voltage
Do not exceed the operating voltage range. Using a higher voltage or using an AC power supply (100 VAC or more) for a DC Sensor can cause explosion or burning.
Sensing Object
* The sensing object may be solid, liquid, or powder, and the detection capability of the Sensor will vary depending on the surface conditions of the object. If the surface irregularities are no more than 0.2 mm, then the specified sensing distance will apply. Materials such as fine powder, felt, cotton, and other materials that absorb sound should be tested before using the Sensor. * If the surface temperature of the sensing object is over 100C, there will be very little ultrasonic reflection. Conduct tests before using the Sensor.
Faulty Wiring
Be careful not to make wiring mistakes such as reversing the power supply polarity. Faulty wiring can cause explosion or burning.
Operating Environment
Do not use the Sensor in an environment where inflammable or explosive gas is present.
Influence of Sensing Angle
Ultrasonic Displacement Sensors can detect solid, liquid, or powder sensing objects, but the surface of the sensing object will affect the measurement. Dented surfaces or sensing objects with an angled surface require a tilt angle within 3 max. to achieve accurate sensing.
E4PA-N Sensing object
Others
* Do not attempt to disassemble, repair, or modify any Units. Any attempt to do so may result in malfunction, fire, or electric shock. * Dispose of Sensors as industrial waste.
Precautions for Correct Use
Design
Sensor Ambient Temperature and Humidity
The acoustic velocity generally fluctuates approximately 0.17% with each 1C of temperature change. For example, if the ambient temperature increases from 20 to 40C, then the acoustic velocity will increase by 3.5%. Moreover, the acoustic velocity will increase by 2% in dry air compared with air with 100% humidity. Test the environmental conditions where the Sensor will actually be used.
3
3
Installation
Mounting the Sensor
The Sensor must be mounted using the nuts provided, and tightened to a torque of 15 N*m max. If the Sensor malfunctions due to noise, insert insulation between the Sensor and the mounting base (metal).
Mutual Interference
Separate the Sensors as specified in the following table when using two or more Sensors in close proximity to one another. The mutual interference prevention function can be used with up to five Sensors.
Atmosphere
* To ensure reliability and long service life, do not use the Sensor outdoors or in places that exceed the rated temperature. * Ultrasonic sensors use air as the transmission medium, so if there are local temperature differences there may be malfunctioning due to reflection and refraction at the boundaries, and the detection distances change where wind blows. Therefore, the Sensor should not be used near equipment such as forced-air ventilators. * Jets from air nozzles include various frequencies, so they can affect the Sensor and should not be used nearby. * Water drops on the Sensor surface shorten the sensing distance.
Parallel Arrangement
E4PA-N Sensing object
E4PA-N
Y
Sensing object
Wiring Considerations
Note: The values shown in the following table are examples for reference only. The actual values will vary depending on the surface conditions of the sensing object, and on the ultrasonic waves that are reflected. Moreover, if the sensing object is inclined, the Y value in the table will be increased further.
Model E4PA-LS50-M1-N E4PA-LS200-M1-N E4PA-LS400-M1-N E4PA-LS600-M1-N 0.3 m min. 1 m min. 2 m min. 2.5 m min. Y
Cable Length
The cable must be no longer than 10 m.
High-voltage Lines
Do not lay power supply cable for the E4PA-N Ultrasonic Displacement Sensor together with high-voltage lines or power lines. Placing them in the same conduit or duct may result in interference, damage, or malfunction.
6
E4PA-N Ultrasonic Displacement Sensor
Dimensions
Note: All units are in millimeters unless otherwise indicated.
Sensors
E4PA-LS50-M1-N
M30 x 1.5 Two clamping nuts 5 Indicator (See note.) Setting Plug
Note: RUN indicator (yellow) Power indicator (green) Error indicator (red) 36 114 22 (12) (25) 27.5 M12 x 1
E4PA-LS200-M1-N
M30 x 1.5 Two clamping nuts 5 Indicator (See note.) Setting Plug
36 114
22
(12) (25) 27.5
Note: RUN indicator (yellow) Power indicator (green) Error indicator (red) M12 x 1
E4PA-LS400-M1-N
M30 x 1.5 Two clamping nuts 5 Indicator (See note.)
Setting Plug
40 dia.
Note: 1. RUN indicator (yellow) Power indicator (green) Error indicator (red) 22 25 128 (12) (25) 27.5 2. This is the dimension between the flat sides of the nuts. M12 x 1
36 (See note 2.)
E4PA-LS600-M1-N
73 dia. 19 M30 x 1.5 Two clamping nuts (See note 2.) 5 Indicator (See note.)
Setting Plug
(41.6)
22 32.5 132 Note: 1. RUN indicator (yellow) Power indicator (green) Error indicator (red) 2. The distance between the flat sides of the nuts is 36 mm.
(12) (25) 27.5
M12 x 1
E4PA-N Ultrasonic Displacement Sensor
7
Accessories (Order Separately)
Standard (Straight)
XS2F-D521-DG0-A (L=2 m) XS2F-D521-GG0-A (L=5 m)
M12 5 dia. 45 14.9 dia. 18 6 dia.
34 48 L
30 50
5
4-to-5 Conductor Conversion Cable
E4PA-C01
M12 5 dia.
45 1 14.9 dia.
18
6 dia.
M12 4 14.9 dia. 3
1 45 2 5 dia.
4 3 5
2 34 48 300 47.1
Setting Plug
E4PA-P1
25 10 4.2 2.5
6.9 dia.
3.2 dia. 8 dia. 10.1 dia.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
CSM_3_1_0110 D099-E1
In the interest of product improvement, specifications are subject to change without notice.
OMRON Corporation
Industrial Automation Company Sensing Devices Division H.Q. Application Sensors Division Shiokoji Horikawa, Shimogyo-ku, Kyoto, 600-8530 Japan Tel: (81)75-344-7068/Fax: (81)75-344-7107
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.
Warranty and Limitations of Liability
WARRANTY
OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year (or other period if specified) from date of sale by OMRON. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS. ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE. OMRON DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED.
LIMITATIONS OF LIABILITY
OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY. In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which liability is asserted. IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS 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 OR REPAIR.
Application Considerations
SUITABILITY FOR USE
OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the combination of products in the customer's application or use of the products. At the customer's request, OMRON will provide applicable third party certification documents identifying ratings and limitations of use that apply to the products. This information by itself is not sufficient for a complete determination of the suitability of the products in combination with the end product, machine, system, or other application or use. The following are some examples of applications for which particular attention must be given. This is not intended to be an exhaustive list of all possible uses of the products, nor is it intended to imply that the uses listed may be suitable for the products: * Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions or uses not described in this catalog. * Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical equipment, amusement machines, vehicles, safety equipment, and installations subject to separate industry or government regulations. * Systems, machines, and equipment that could present a risk to life or property. Please know and observe all prohibitions of use applicable to the products. NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON PRODUCTS ARE PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.
PROGRAMMABLE PRODUCTS
OMRON shall not be responsible for the user's programming of a programmable product, or any consequence thereof.
Disclaimers
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 model numbers when published ratings or features are changed, or when significant construction changes are made. However, some specifications of the products may be changed without any notice. When in doubt, special model numbers may be assigned to fix or establish key specifications for your application on your request. Please consult with your OMRON representative at any time to confirm actual specifications of purchased products.
DIMENSIONS AND WEIGHTS
Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are shown.
PERFORMANCE DATA
Performance data given in this catalog 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 users must correlate it to actual application requirements. Actual performance is subject to the OMRON Warranty and Limitations of Liability.
ERRORS AND OMISSIONS
The information in this document has been carefully checked and is believed to be accurate; however, no responsibility is assumed for clerical, typographical, or proofreading errors, or omissions.
2010.1 In the interest of product improvement, specifications are subject to change without notice.
Industrial Automation Company
http://www.ia.omron.com/
OMRON Corporation
(c)Copyright OMRON Corporation 2010 All Right Reserved.

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