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E4B
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Ultrasonic Proximity Sensor Capable of Setting the Sensing Range Using an Ultrasonic Beam Ensures the stable detection of a variety of objects regardless of the color, transparency, or material (metallic or non-metallic) of the objects. Limits the ultrasonic beam width to 8°, thus detecting minute objects as small as 2 x 2 cm. Detects objects smoothly while largely suppressing interference from background objects. Sealed to resist dust and dirt and emits ultrasonic waves at a frequency of approximately 200 kHz, thus providing high immunity from impact and environmental noise. Ordering Information Output configuration DC switching NPN (normally open or closed selectable) Sensing method Sensing distance Convergent reflective (Distance adjustable) Convergent reflective (Zone setting) Sensing zone

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E4B Sensing Method Detects the attenuation or interrupted condition of the ultrasonic beam caused by the object E4B-TjS Emitter passing between the Emitter and Receiver. Convergent reflective distance Detects only the beam reflected from the object existing within the sensing distance range set with the distance adjuster. Sensing object E4B-TjR Receiver Unstable range Convergent reflective zone Sensing object passing zone Detects the object with the interruption of the normal beam reflected from the reflector. Sensing object passing zone Sensing distance adjustable range Sensing object...

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Specifications Ratings/Characteristics Model Sensing method Sensing distance Convergent reflective zone 20 to 60 cm (20 to 70 cm) (see note 1) (in 10-cm divisions) Item 12 to 24 VDC ± 10% (10.8 to 26.4 VDC) with a max. ripple ±10% (p-p) Supply voltage Current consumption Convergent reflective distance Standard sensing object Differential travel Directional angle (see note 2) Ultrasonic oscillation frequency Response frequency (see note 4) Operating mode Incident or interrupted (selectable) Control output NPN, 100 mA at 30 VDC (with a residual voltage of 1.5 V max.) and an output resistance...

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Engineering Data E4B-TS50E4: Sensitivity adjuster set to Max. Sensitivity adjuster: Adjust with stable incident. Sensitivity adjuster: Adjust with stable incident. Sensing position X (cm) (from Receiver) Note: Sample: Round pipe that is 10 cm long min. The curve with the sensitivity adjuster Note: set to maximum indicates the size of the sensing object. Standard sensing object (40 x 40 flat plate) E4B-LS70E4, E4B-RS70E4 Sample: Round pipe that is 10 cm long min. The sensing method will change when the sensing distance exceeds 10 cm. As a result, the detectable diameters will change greatly....

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1. STABILITY Indicator (Green) When this indicator is lit, the ultrasonic input into the Receiver is sufficient, or its interruption is small enough, to ensure the smooth operation of the E4B. Do not operate the E4B when this indicator is not lit. 2. SENSING Indicator (Red) When this indicator is lit, the Receiver has ultrasonic input. Indicator of Through-beam Emitter 1. Incident Indicator Lit when there is ultrasonic input. To use this indicator of the Emitter as an SENSING indicator like the indicator on the Receiver, connect the black lead wires of the Emitter and Receiver together....

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E4B Beam Axis, Sensitivity, and Distance Adjustments 1. E4B-T1 and E4B-TS50 Through-beam Models Set the SENSITIVITY adjuster of the Receiver to maximum. Move the Emitter and Receiver vertically and horizontally until the SENSING indicator of the Receiver is lit and secure the Emitter and Receiver at the midpoint of the range within which the STABILITY indicator is lit. Range in which the STABILITY indicator (green) is lit Optimum line Range in which the SENSING indicator (red) is lit Pass the sensing object through the sensing range and adjust the sensitivity so that the SENSING indicator...

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E4B 3. E4B-RS70 Convergent Reflective Zone General Use Locate the Sensor so that both the STABILITY and SENSING indicators will be lit when the sensing object is placed at the sensing position and the STABILITY indicator will be lit and the SENSING indicator will be off when the sensing object is removed. Step Distance selector Adjustment procedure Sensing object Sensing object Sensing object Move the Emitter and Receiver vertically and horizontally and secure the Emitter and Receiver at the midpoint of the range within which the STABILITY indicator is lit. Place the sensing object at the...

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1. If the STABILITY indicator is not lit while the Sensor is in operation, this indicates a possible operational error. Check or readjust the sensitivity. 2. If the sensing object is in position A parallel to the Reflector as shown above, the SENSING indicator may be lit and the STABILITY indicator may not be lit depending on the position of the sensing object. In such a case, give priority to the adjustment of the STABILITY indicator when the beam is incident by means of the reflector. Operation Output Circuits NPN Models Switching DC Incident (Power supply polarity: Brown: +; Blue: 0 V)...

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Precautions Correct Use Sensor Mounting Angle If the E4B 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 E4B so that the ultrasonic beam and the sensing surface of each object meet at right angles to each other. Surrounding Objects Make sure that the Sensor is free from surrounding objects that reflect the ultrasonic beam diffusion, otherwise the Sensor may malfunction. In particular, pay the utmost attention so that no side lobe...

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ALL DIMENSIONS SHOWN ARE IN MILLIMETERS. To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527. In the interest of product improvement, specifications are subject to change without notice. OMRON Corporation Industrial Sensors Division Sensing Devices and Components Division H.Q. 28th Fl., Crystal Tower Bldg. 1-2-27, Shiromi, Chuo-ku, Osaka 540-6028 Japan Phone: (81)6-949-6012 Fax: (81)6-949-6021

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