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Ultrasonic Reflective Sensor
Sensor with an Adjustable Sensing
Distance of 0.3 to 3 m Under Stable
Operation without Background
Interference
■
Ensures a stable operating range with minimal
side-lobe areas.
■
Built-in unstable operation check function allows
easy adjustment to a proper mounting direction.
■
Mono-block construction with a sensor, power
supply, and terminals ensures easy wiring.
■
Incorporates synchronous selector and reference
pulse I/O terminals ideal for parallel-operation use
without mutual interference.
Ordering Information
Sensing method
Model
for AC
for DC
Application Examples
Detection of cellophane, glass, and
photosensitive paper
Reflective
E4A-3K
E4A-3K DC12-24
Detection of objects on conveyors or
discrimination of object heights
E4A-3K
1
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Summary of Contents for Omron E4A-3K
- Page 1 I/O terminals ideal for parallel-operation use without mutual interference. Ordering Information Sensing method Reflective Model for AC E4A-3K for DC E4A-3K DC12-24 Application Examples Detection of cellophane, glass, and Detection of objects on conveyors or photosensitive paper discrimination of object heights...
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Page 2: Specifications
An object may be detected due to multiple reflection if the object is in the dead range, in which case however, the detection of the object will not be stable. Therefore, do not attempt to use the E4A-3K to detect an object in the dead range by making use of multiple reflection. -
Page 3: Engineering Data
Operating Zone (Typical Examples) ■ The operating zone is the sensing range of the E4A-3K at the sensing distance with the sensing object moved vertically towards the ultra- sonic beam. The operating zone varies with the sensing distance and sensing object. -
Page 4: Installation
Contact output Contact output Contact output Note: 1. If the synchronous operation of the E4A-3K is required, set the reference Note: 1. If the synchronous operation of the E4A-3K is not required, set the pulse selector of only one Unit to ON. Then connect terminal 7 of all the Units together and do the same for terminal 8. - Page 5 Before adjusting the sensing distance, remove the rubber cap tance required for the sensing object to move. from the top of the E4A-3K. Be sure to put on the rubber cap after the sensing distance is adjusted. 1. Apply a flat-blade screwdriver to the groove of the distance selector to set the distance selector to either a range between 0.3 and 2 m or a range between 1.3 and 3 m...
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Page 6: Correct Use
Correct Use ■ Sensor Mounting Angle If the E4A-3K is in level control or distance control of sensing objects, the stability of signal detection will depend on the sensing surface condition of the objects. Considering the repose angle of the objects, mount the E4A-3K so that the ultrasonic beam and the sensing surface of each object meet at right angles to each other. - Page 7 E4A-3K E4A-3K...
- Page 8 E4A-3K E4A-3K 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_4_1_0815 D064-E1 In the interest of product improvement, specifications are subject to change without notice. OMRON Corporation Industrial Automation Company Sensing Devices Division H.Q.
- Page 9 (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.
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