R Ultrasonic Sensor With Zone Sensing E4B Through-beam, Reflective and Zone Models H 1 m through-beam for long range applications H Narrow beam angle of 8° detects objects as small as 2 x 2 cm H Zone models detect objects smoothly while suppressing interference from background objects H 200 kHz provides high immunity from environmental noise H User-selectable normally open and normally closed operation Ordering Information Supply voltage Sensing type Sensing distance Cable length Part number 12 to 24 VDC Through-beam Through beam 1m 2m NPN output E4B-T1E4 2M PNP output E4B-T1F4 2M 5m E4B-T1E4 5M E4B-T1F4 5M 2m E4B-TS50E4 2M E4B-TS50F4 2M 5m E4B-TS50E4 5M E4B-TS50F4 5M 2m E4B-RS70E4 2M E4B-RS70F4 2M 5m E4B-RS70E4 5M E4B-RS70F4 5M 2m E4B-LS70E4 2M E4B-LS70F4 2M 5m E4B-LS70E4 5M E4B-LS70F4 5M 2m E4B-LS20E4 2M E4B-LS20F4 2M 5m E4B-LS20E4 5M E4B-LS20F4 5M 50 cm Zone setting Distance setting 20 to 70 cm 20 to 70 cm 5 to 20 cm 2 E4B E4B J SENSING TYPE Through-beam Reflective Detects the attenuation or interrupted condition of the ultrasonic beam caused by the object E4B-TjS Emitter passing between the Emitter and Receiver. Setting 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 Distance adjustment E4B-LSj Unstable range Setting zone Sensing background Detects the object with the interruption of the normal beam reflected from the acoustically reflective surface. Sensing object Sensing distance adjustable range E4B-RS70 Sensing object Sensing target Detects only the beam reflected from the object existing in the sensing range set with the distance selector. Acoustically reflective surface E4B-RS70 Unstable range Sensing object Note: An object may be detected due to multiple reflection if the object is in the unstable range where the distance adjuster is ineffective, in which case however, the detection of the object will not be stable. Therefore, do not attempt to use the E4B to detect an object in the unstable range. 3 E4B E4B Specifications J RATINGS/CHARACTERISTICS Part number E4B-TS50E4 Sensing method Through-beam Supply voltage 12 to 24 VDC ± 10% (10.8 to 26.4 VDC) with a max. ripple ±10% (p-p) Current consumption 12 VDC E4B-T1E4 E4B-LS20E4 E4B-LS70E4 Distance setting Zone setting Emitter: 155 mA max. Receiver: 30 mA max. Emitter: 70 mA max. Receiver: 30 mA max. 100 mA max. Emitter: 80 mA max. Receiver: 30 mA max. Emitter: 50 mA max. Receiver: 30 mA max. 50 mA max. Sensing distance 50 cm (19.69 in) 1 m (3.28 ft) Standard sensing object 10 x 10 cm flat plate 4 x 4 cm flat plate Differential travel — 20% max. of sensing distance Directional angle (See Note 2.) ±8° max. Ultrasonic oscillation frequency 200 kHz Switching frequency (See Note 3.) 50 Hz 10 Hz 50 Hz 20 Hz Response time 10 ms 50 ms 10 ms 25 ms Operating mode N.O. or N.C. selectable 24 VDC Control output NPN 5 to 20 cm (1.97 to 7.87 in) E4B-RS70E4 20 to 60 cm (20 to 70 cm) (See Note 1.) (7.87 in to 23.62 in) 20 to 60 cm (20 to 70 cm) (See Note 1.) (in 10-cm divisions) (7.87 to 23.62 in) 3 cm max. 100 mA at 30 VDC (with a residual voltage of 1.5 V max.) and an output resistance of 4.7 kΩ PNP Residual voltage 1.5 V max. under a load current of 100 mA Indicators SENSING indicator (red LED) and STABILITY indicator (green LED) Ultrasonic speed compensation No Ambient operating temperature -- 10°C to 55°C (14°F to 131°F) Relative humidity 35% to 95% Temperature influence ±10% max. of sensing distance at 20°C (68°F) in the temperature range of -- 10°C and 55°C (14°F to 131°F) Voltage influence ±5% max. of sensing distance at a voltage between 90% and 110% of the rated power supply voltage Insulation resistance 20 MΩ min. at 500 VDC between current carry parts and case Dielectric strength 1,000 V (50/60 Hz) for 1 min between current carry parts and case Vibration resistance 10 to 55 Hz, 1.5-mm double amplitude for 2 hours each in X, Y, and Z axes Shock resistance 500 m/s2 (approx. 50G) 3 times each in X, Y, and Z axes Enclosure rating Approvals Yes IEC IP66 (water resistant) UL, cUL Weight (with 2-m-long cord and Mounting Bracket) Recognized, File No. E41515 when used with a Class 2 power source Approx. 600 g (21 oz) with Emitter and Receiver Approx. 300 g (10.6 oz) Note: 1. These are the available sensing distances at an ambient temperature range between 0°C and 45°C (32°F to 113°F) 2. Signal attenuation of -- 6 dB. 3. The switching frequencies are values obtained with the E4B used for detecting a rotating propeller-shaped disc as shown below. Space:Blade = 1:1 4 E4B E4B Operation J OUTPUT CIRCUITS NPN Output DC Load Main circuit 4.7k W Signal received, output on (Power supply polarity: Brown: +; Blue: 0 V) +V Brown Sound incident Signal received Note 1. Sound interrupted Signal interrupted Black STABILITY indicator (red) Note 2. Output transistor Blue Load (relay) 0V Note: 1. 100 mA max. (load current) 2. Required when the transistor circuit is connected. PNP Output (No Diagram Provided) 5 ON STABILITY indicator (red) OFF ON OFF Output transistor Output voltage (logic) Load (relay) (Brown ↔ Black) H L ON OFF ON OFF Operate Operate Release Signal not received, output on (Power supply polarity: Brown: 0 V: Blue: +) (Blue ↔ Black) Release Output voltage (logic) H L (Blue ↔ Black) (Brown ↔ Black) E4B E4B Engineering Data J OPERATING DISTANCE VS. SENSING OBJECT SIZE (TYPICAL) E4B-T1E4: Sensitivity adjuster set to Max. E4B-TS50E4: Sensitivity adjuster set to Max. Sensitivity adjuster: Adjust with stable incident. E4B-LS70E4, E4B-RS70E4 Sample: Round pipe that is 10 cm long min. Sensitivity adjuster: Adjust with stable incident. Sensing position X (cm) (from Receiver) Sensing distance (cm) J OPERATING RANGE DIAGRAM (TYPICAL) Operating distance (cm) J OPERATING DISTANCE VS. SENSING OBJECT ANGLE (TYPICAL) E4B-LS70E4, E4B-RS70E4 Sensing distance (cm) Sensing distance (cm) Standard sensing object (40 x 40 flat plate) Sensing distance (cm) Sample: Round pipe that is 10 cm long min. E4B-LS70E4, E4B-RS70E4 Standard sensing object (40 x 40 flat plate) 55-dia. rod 30-dia. rod E4B-LS70 E4B-RS70 Angle θ Sensing object Distance X Angle θ ( ) E4B-LS20E4 Dia. (d) of sensing object or length (W) of one side in cm. Sensing position E4B-LS20E4 Dia. (d) of sensing object or length (W) of one side in cm. Minimum Sensing object size (cm) for stable operation E4B-TS50E4, E4B-T1E4 ° Stable operating range Sensing distance (cm) 6 Operating distance X (cm) E4B E4B J AMBIENT TEMPERATURE VS. VARIATION RATE OF SENSING DISTANCE (TYPICAL) J SENSITIVITY ADJUSTER POSITION VS. PARALLEL MOVEMENT CHARACTERISTICS E4B-T1E4 VR: Max. VR: Center VR: Min. Operating distance Y (cm) Variation rate of sensing distance (%) E4B-LS70E4, E4B-RS70E4 Ambient temperature (°C) Setting distance X (cm) Installation J INDICATORS J INDICATOR OF THROUGH-BEAM EMITTER 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) 1. Incident Indicator Lit when ultrasonic signal detected. 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. When this indicator is lit, the Receiver has ultrasonic input. Load 100 mA max. Black Emitter Black Receiver Blue Blue +12 to 24 V 0V Brown Brown +12 to 24 V 0V Note: Be sure not to make mistakes in polarity when connecting the above wires. In other words, both brown lead wires must connect to +VDC or 0 V and both blue lead wires must connect to 0 V or +VDC. Otherwise, the indicator of the Emitter will be lit when the ultrasonic beam is interrupted. Connections of Black (White) Lead Wire of Emitter 2. Power Indicator Lit when the E4B is turned ON. If the above connections are not possible (e.g., the Receiver and Emitter use different power supplies), this indicator will be used as a power indicator. Power connection example Brown: +VDC Blue: 0 V Brown: 0 V Blue: +VDC 0 V blue +VDC blue Note: The indicator will not be lit if the above wires are not connected correctly. 7 E4B E4B Pass the sensing object through the sensing range and adjust the sensitivity so that the SENSING indicator turns ON and OFF according to the presence or absence of the sensing object while the STABILITY indicator is lit continuously. J BEAM AXIS, SENSITIVITY, AND DISTANCE ADJUSTMENTS 1. E4B-T1 and E4B-TS50 Through-beam Models If the STABILITY indicator is not lit while the Sensor is in operation, this may indicate a possible operational error. Check or readjust the sensitivity. 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. If the Emitter and Receiver are set at a distance shorter than the rated sensing distance, reduce the sensitivity to within the range in which the STABILITY indicator is lit. This will increase the immunity of the Sensor against noise. Range in which the STABILITY indicator (green) is lit The parallel movement characteristics (i.e., the mutual interference distance) and sensing object size vary with the sensitivity adjustment. Refer to Engineering Data and make the optimum adjustments. Optimum line Range in which the SENSING indicator (red) is lit 2. E4B-LS20 and E4B-LS70 Distance Setting Models Locate the Sensor so that both the STABILITY and SENSING indicators will be lit when the object is placed at the sensing position, and the STABILITY indicator will be lit and the SENSING indicator will turn OFF when the object is removed. Step 1 2 3 Distance adjuster Adjustment procedure Place the sensing object at the sensing position and turn the distance adjuster clockwise gradually until both the SENSING and STABILITY indicators are lit. Background Sensing object Background Sensing object Background Sensing object Sensing --- --- Rotate the sensor vertically and horizontally and secure the sensor at the midpoint of the range within which the STABILITY indicator is on. Remove the sensing object and check that the SENSING indicator is OFF and the STABILITY indicator is continuously on. Note: If the STABILITY indicator is not lit while the Sensor is in operation, this indicates a possible operational error. Check or readjust the sensitivity. E4B-LS20 The sensing distance is adjustable within a range of 10 to 20 cm with the distance adjuster. Sensing distance Position of distance adjuster 5 to 10 cm Set to the position 5-20. The distance range will be 5 to 23 cm in this case due to the characteristics of the ultrasonic beam. 10 to 20 cm The adjuster can be set freely within a range of 10 to 20 cm. The object can be detected within a range of 5 to 10 cm in this case due to multiple ultrasonic reflection. Setting sensing range (cm) Separate them 30 cm min. Unstable range 8 Background Sensing object E4B-LS20 E4B E4B 3. E4B-RS70 Reflective Zone Target Reflective 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 1 2 3 Distance selector Adjustment procedure Place the sensing object at the sensing position and turn the distance selector clockwise gradually until both the SENSING and STABILITY indicators are lit. Background Sensing object Background Sensing object Background Sensing object Sensing --- --- Rotate the sensor vertically and horizontally and secure the sensor at the midpoint of the range within which the STABILITY indicator is on. Remove the sensing object and check that the SENSING indicator is OFF and the STABILITY indicator is continuously on. Note: 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 background object is within a distance of 1.5 m from the sensing head, the SENSING indicator may be lit and the STABILITY indicator may not be lit in spite of the absence of the sensing object. Sensitivity should be reduced until STABILITY indicator turns on. Re-check operation with object present. If stable operation still does not occur, background may need to be relocated. 9 E4B E4B Background Reflective This method allows the stable detection of objects under irregular and unstable reflection conditions (e.g., if the sensing objects are different in surface or size, if they are passed through diagonally, or if they are sound absorbant). The sensor is adjusted to detect the background, Acoustic Reflector, rather than the target directly. When the target is present, it blocks detection of the Acoustic Reflector. E4B-RS70 The Acoustic Reflector must be at least 4 x 4 cm in size and made of a material that is efficiently reflective (such as a metal plate). Be sure that the target is not set within the sensing range. Set the distance selector to the desired position, fix the reflector around the midpoint of the set sensing range, and check that both the SENSING and STABILITY indicators are lit. Reflector Sensing range (20 to 55 cm) ℓ: Near the midpoint of the sensing range (e.g., 45, 55, or 65 cm) Step Sensing 1 2 3 Set zone Reflector Reflector Distance selector Adjustment procedure Set the distance selector to the desired zone position, mount the Reflector at or near the midpoint of the set zone, and confirm that both the STABILITY and SENSING indicators are on. Sensing object Reflector --- --- Rotate the sensor vertically and horizontally and secure the Emitter and Receiver at the midpoint of the range within which the STABILITY indicator is on. Remove the sensing object and check that the SENSING indicator is OFF and the STABILITY indicator is continuously on. Note: 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 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. 10 E4B E4B Dimensions Unit: mm (inch) J E4B-TS50 E4B-T1 E4B-LS20 E4B-LS70 E4B-RS70 79 (3.11) 35 20 5 R2.5 Two, M4 x 45 8 35 (1.38) 62 49.5 32 10 25 61 (2.40) 4.5 dia. 57 (See Note.) 71.5 38 11.5 Note: Vinyl-insulated round cable with three conductors, 6 dia.; standard length: 2 m 17.5 25 50 (1.97) 66 44.5 8 11.5 Precautions J SENSOR MOUNTING ANGLE J MOUNTING 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. Securely mount the E4B by using the nuts provided with the E4B or the mounting holes of the E4B. Refer to Dimensions for details. J 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 of the ultrasonic beam will be reflected by such objects. 11 Do not strike the Sensor with hammer or other object, otherwise the E4B will no longer be water-resistant. If the E4B is not mounted securely, the E4B may be damaged by vibration or may not detect target objects accurately due to a possible change in the mounting position. E4B E4B J ENVIRONMENTAL CONDITIONS Do not use the E4B at a temperature exceeding the rated range or outdoors, otherwise the reliability and life of the E4B will decrease. The Ultrasonic Reflective Sensor utilizes the air as a beam transmission media. Do not use the E4B in places with radical convection or extreme local temperature changes. For example, if there is a hot air curtain that causes turbulence within the sensing area, the E4B may malfunction. The jetting sound of air nozzles includes noise of a wide frequency range, which will affect the operation of the E4B. Do not use an air nozzle near the E4B. The sensing distance of the E4B will decrease if there is any water drops on the surface of the emitter or receiver. The through-beam model may not detect any objects if there is any object absorbing sound, such as powder and cotton, on the surface of the emitter or receiver. Air curtain Turbulence Emitter Receiver NOTE: DIMENSIONS SHOWN ARE IN MILLIMETERS. To convert millimeters to inches divide by 25.4. R OMRON ELECTRONICS LLC OMRON ON--LINE OMRON CANADA, INC. 1-800-55-OMRON Global -- http://www.omron.com USA -- http://www.omron.com/oei Canada -- http://www.omron.com/oci 416-286-6465 One East Commerce Drive Schaumburg, IL 60173 Cat. No. CEDSAX4 11/01 Specifications subject to change without notice. 885 Milner Avenue Scarborough, Ontario M1B 5V8 Printed in U.S.A.
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