Ultrasonic Proximity Sensor E4C Compact, Cylindrical Ultrasonic Proximity Sensor with Separate Amplifier Unit ■ Stable operation for a variety of objects regardless of color, transparency, or material (metallic or non- metallic). ■ Compact M18-sized cylindrical head. ■ Prevent mutual interference using a synchroniza- tion selector. ■ With reflective models, setting sensing zones ensures detection without influence by the back- ground. Ordering Information Sensors (Refer to Dimensions on page 7.) Amplifier Units (Refer to Dimensions on page 7.) Sensing method Sensing distance Model Supply voltage Model Through-beam E4C-TS50 12 to 24 VDC E4C-WH4T 50 cm Reflective E4C-LS35 12 to 24 VDC E4C-WH4L 10 to 35 cm (convergent reflective) Application Examples Detection of transparent bottles and containers Detection of milk packages 1 E4C E4C Specifications ■ Ratings/Characteristics Sensors Model E4C-TS50 E4C-LS35 Item Sensing method Through-beam Reflective Sensing distance 50 cm 10 to 35 cm (possible to limit the sensing zone within a range between 2 and 25 cm) Standard sensing object 10 x 10 cm flat plate 4 x 4 cm flat plate Ultrasonic oscillation frequency Approx. 270 kHz Response frequency 50 Hz 20 Hz Directional angle (see note 1) ±8° max. Indicator SENSING indicator (red LED) Ambient temperature Operating: –10°C to 55°C (with no icing) Ambient humidity Operating: 35 to 95% Vibration resistance Destruction: 10 to 55 Hz, 1.5-mm double amplitude for 2 hours each in X, Y, and Z directions 2 Shock resistance (approx. 50G) 3 times each in X, Y, and Z directions Destruction: 500 m/s Degree of protection (see note 2) IEC IP66 Cord length 2 m Weight Approx. 300 g (with Emitter and Receiver) Approx. 150 g Material Case Heat-resistant ABS resin Oscillator Ceramic Nut Polyacetal resin Note: 1. This is the half-value angle obtainable with a signal of -6 dB. 2. The enclosure rating indicates the degree of protection of the case, which will depend on the operating condition. Amplifier Units Model E4C-WH4T E4C-WH4L Item Sensing method Through-beam Reflective Sensing distance 50 cm 10 to 35 cm Supply voltage 12 to 24 VDC ±10% with a max. ripple ±10% (p-p) (operating voltage range) Current consumption 100 mA max. at 12 VDC Differential travel --- 20% max. of rated sensing distance Response frequency (see note) 50 Hz 20 Hz Control output Terminal output: 100 mA max. (NPN or PNP open collector output at 40 VDC with a residual voltage (residual voltage) of 2 V) Connector output: 50 mA max. (photocoupler output) Operation mode Normally open or normally closed (selectable with a slide switch) Ultrasonic compensation Yes Indicator SENSING indicator (red LED) and STABILITY indicator (green LED) Ambient temperature Operating: –10°C to 55°C (with no icing) Ambient humidity Operating: 35 to 95% Temperature influence ±30% max. of sensing distance at 20°C in the ±10% max. of sensing distance at 20°C in the temperature range of –10°C and 55°C temperature range of –10°C and 55°C Voltage influence ±10% 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 VAC (50/60 Hz) for 1 min between current carry parts and case Vibration resistance Destruction: 10 to 55 Hz, 1.5-mm double amplitude for 2 hours each in X, Y, and Z directions 2 Shock resistance Destruction: 500 m/s (approx. 50G) 3 times each in X, Y, and Z directions Degree of protection IEC IP40 Weight Approx. 110 g Materials Case: ABS Note: The response frequencies are values obtained with the E4C used for detecting the rotating propeller-shaped disc as shown on the right. 2 E4C E4C Space:blade = 1:1 Engineering Data Sensing Range (Typical) Parallel Movement Operating Distance vs. Characteristics (Typical) Sensing Object Size (Typical) E4C-LS35 E4C-TS50 E4C-LS35 Standard sensing object (4 x 4 cm flat plate) Power supply voltage: 12 VDC Sensing adjuster: 10 Sensitivity Adjuster: Max. Zone adjuster: 25 Operating range Operating range Operating range Sensing object: Column Obtain the point that turns Y and Y ON 1 2 Dia.: d (cm) while changing the sensing distance (X). Sensing distance X (cm) Setting distance X (cm) Setting distance X (cm) Ambient Temperature vs. Operating Distance vs. Variation Rate of Sensing Sensing Object Angle (Typical) Distance (Typical) E4C-TS50 E4C-LS35 E4C-TS50+ E4C-WH4T Sensor and Amplifier: Same temperature Distance adjuster: 10 variation Zone adjuster: 25 Sensitivity adjuster: Max. θ° Operating range Operating range Sensitivity adjuster: Max. Receiver Emitter Sensing object (dia. d mm) Operating distance X (cm) Ambient temperature (°C) Object passing position X (cm) E4C-TS50+E4C-WH4T E4C-TS50+E4C-WH4T E4C-LS35+E4C-WH4L Sensor: Constant room temperature Sensor and Amplifier: Same temperature Sensor: Temperature varied variation Amplifier: Temperature varied Amplifier: Constant room temperature Sensitivity adjuster: Max. Distance adjuster: 10 Sensitivity adjuster: Max. Zone adjuster: 25 Ambient temperature (°C) Ambient temperature (°C) Ambient temperature (°C) 3 Variation rate of sensing distance (%) Sensing range Y (cm) Sensing object dia. d (cm) Variation rate of sensing distance (%) Angle (°) Operating distance Y (cm) Variation rate of sensing distance (%) Variation rate of sensing distance (%) Sensing object dia. d (cm) E4C E4C Sensitivity Adjuster Position vs. Parallel Movement Characteristics E4C-LS35+E4C-WH4L E4C-LS35+E4C-WH4L E4C-TS50+E4C-WH-4T Obtain the point that turns Y and Y ON 1 2 Sensor: Temperature varied Sensor: Constant room temperature while changing the sensing distance (X). Amplifier: Constant room temperature Amplifier: Temperature varied Distance adjuster: 10 Distance adjuster: 10 Zone adjuster: 25 Zone adjuster: 25 Sensitivity adjuster: Center Sensitivity adjuster: Max. Setting distance X (cm) Ambient temperature (°C) Ambient temperature (°C) ■ Amplifier Units Indicators Asynchronous/Synchronous (MON/SYN) Switch STABILITY Indicator (Green)If more than one Sensor is us ed in one place, the Sensors need to be in synchronous operation for the prevention of mutual inter- When this indicator is lit, the ultrasonic input into the Receiver is ference. A maximum of four Sensors can be in synchronous op- sufficient, or its interruption small enough, to ensure the smooth eration. operation of the E4C. Do not operate the E4C when this indicator is not lit.Connect the DC power supply and Sensor to each Amplifier as usual. SENSING Indicator (Red) Use the E99-C (order separatel y) connector to connect the Sen- When this indicator is lit, the Receiver has ultrasonic input. sor to the Amplifier. Operation Selector (H1/H2)If the case of the connections shown in the following illustration, set the selector of only one Amplifier (No. 1 in the following case) Incident-ON (H1) to MON. Set the selector of any other Amplifier to SYN. Light incident E99-C Connector Light interrupted (order separately) (see note) (see note) (see note) ON SENSING indicator (red) OFF Output transistor ON (Both PNP and NPN outputs) OFF Operate Load (e.g., relay) Release Incident-OFF (H2) Light incident Light interrupted Sensors ON Amplifiers SENSING indicator (red) OFF Output transistor Note: The E99-C Connector will be most effective if the E4C is ON (Both PNP and NPN outputs) a reflective model although the E99-C Connector is re- OFF quired by both the reflective and through-beam models. Operate When using through-beam models, however, be sure to Load (e.g., relay) Release maintain enough between adjacent Sensors to suppress mutual interference. Refer to Sensitivity Adjuster Position vs. Parallel Movement Characteristics in Engineering Da- Note: The load in operation is connected to the output circuit of ta. the E4C. 4 Variation rate of sensing distance (%) Variation rate of sensing distance (%) Operating distance Y (cm) E4C E4C ■ Sensitivity/Zone Adjustments Pass the sensing object through the sensing range and adjust the E4C-TS50 and E4C-WH4T Through-beam Models sensitivity so that the SENSING indicator turns ON and OFF Set the SENSITIVITY adjuster of the Receiver to maximum. according the presence or absence of the sensing object while Move the Emitter and Receiver vertically and horizontally until the the STABILITY indicator is lit continuously. SENSING indicator of the Receiver is lit and secure the Emitter If the STABILITY indicator is not lit while the Sensor is in opera- and Receiver at the midpoint of the range within which the STA- tion, this may indicate a possible operational error. Check or read- BILITY indicator is lit. just the sensitivity. If the Emitter and Receiver are set at a distance shorter than the Range in which the STABILITY indicator (green) lit 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. Optimum line Range in which the SENSING indicator (red) lit E4C-LS35 and E4C-WH4L Convergent Reflective Model Locate the Sensor so that both the STABILITY and SENSING indicators will be lit when the sensing object is placed at the sensing posi- tion, and the STABILITY indicator will be lit and the SENSING indicator will turn OFF when the sensing object is removed. Step 1 2 3 4 Sensing 35 cm Distance adjuster --- --- Zone adjuster Adjustment Place the sensing object at Move the Emitter and Re- Remove the sensing object The sensing zone can be procedure the sensing position and ceiver vertically and hori- and check that the SENS- set within a range of 2 to 25 turn the distance adjuster zontally and secure the ING indicator is OFF and cm with the zone adjuster. clockwise gradually until Emitter and Receiver at the the STABILITY indicator is both the SENSING and midpoint of the range within continuously lit. STABILITY indicators are which the STABILITY indi- lit. (See note 2) cator is lit. 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. The sensing distance is adjustable within a range of 10 to 35 cm with the distance adjuster. 3. Adjust the sensing zone within the sensing distance adjustable range (i.e., 10 to 35 cm). 5 Sensing object Background Sensing object Background Sensing object Background Sensing object Background E4C E4C Sensing Zone Setting Example Relationship between Incident-ON and Incident- OFF Sensing zone Example: Sensing distance set to 15 cm and zone set to 10 cm Sensing distance Sensing zone adjustment adjustment Incident-ON Sensing distance Sensing zone adjustment adjustment Incident-OFF Note: Make the settings as shown above to set a sensing zone of 10 cm with a sensing distance adjustment of 15 cm. Stable sensing zone Unstable Non-sensing (adjustable) sensing zone zone (Outside the ratings) (Outside the ratings) Note: Set the zone within a distance of 10 to 35 cm from the Sensor. Therefore, if the distance adjuster is set to 30 cm and zone adjuster is set to 20 cm, the sensing zone will be 5 cm from a point 30 cm away from the Sensor. Step 1 2 Distance adjuster and zone adjuster Adjustment Set the distance ad- Set the zone adjuster procedure juster to 15 cm to 10 cm. Nomenclature E4C-WH4T E4C-WH4L Asynchronous/Syn- Asynchronous/Syn- chronous (MON/SYN) chronous (MON/SYN) operation selector operation selector Operation (H1/H2) selector Operation (H1/H2) selector Zone adjuster SENSING indicator SENSING indicator Sensitivity adjuster Distance (sensing STABILITY indicator STABILITY indicator distance) adjuster Operation ■ Output Circuit 12 to 24 V Load PNP output E4C 100 mA max. main Load circuit NPN output 100 mA max. 0 V 6 Background object E4C E4C Dimensions Note: All units are in millimeters unless otherwise indicated. Sensors E4C-TS50 E4C-LS35 Mounting Holes SENSITIVITY indicator 18.5 dia. 11 dia. 8 dia. 9 dia. (See note) Note: E4C-TS50R or E4C-LS35: 3-conductor, shielded cord (6 dia., UL2791) with 7/0.25 dia. (standard length: 2 m) E4C-TS50S: 2-conductor, shielded cord (6 dia., UL20276) with 7/0.25 dia. (standard length: 2 m) Amplifier Units E4C-WH4T Eight, M3.5 terminal screws Two, M4 screw mounting holes Mounting Holes Two, 4.5 dia. (See note) Note: DIN track mounting side Eight, M3.5 terminal screws E4C-WH4L Two, M4 screw mounting holes Mounting Holes Two, 4.5 dia. (See note) Note: DIN track mounting side 7 E4C E4C Installation ■ Connections E4C-WH4T E4C-WH4L 12 to 24 VDC 12 to 24 VDC Output 2 (PNP) Output 1 (NPN) Output 1 (NPN) Output 2 (PNP) 100 mA max., 100 mA max., 100 mA max., 100 mA max., 40 VDC max. 40 VDC max. 40 VDC max. 40 VDC max. Black Red Black Red White White Shield Shield E4C-LS35 E4C-TS50 Precautions ■ Correct Use Sensor Mounting Angle Environmental Conditions If the E4C is in level control or distance control of sensing objects, Do not use the E4C at a temperature exceeding the rated range the stability of signal detection will depend on the sensing surface or outdoors, otherwise the reliability and life of the E4C will condition of the objects. Considering the repose angle of the decrease. objects, mount the E4C so that the ultrasonic beam and the sens- The Ultrasonic Reflective Sensor utilizes the air as a beam trans- ing surface of each object meet at right angles to each other. mission media. Do not use the E4C in places with radical convec- tion or extreme local temperature changes. For example, if there Surrounding Objects is a hot air curtain that causes turbulence within the sensing area, Make sure that the Sensor is free from surrounding objects that the E4C may malfunction. 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. Turbulence Air curtain Mounting Securely mount the E4C by using the nuts provided with the E4C or the mounting holes of the E4C. Refer to Dimensions for details. Emitter Do not strike the Sensor with any hammer or other object, other- wise the E4C will no longer be water-resistant. If the E4C is not mounted securely, the E4C may be damaged by vibration or may not detect sensing objects accurately due to a possible change in the mounting position. Receiver The jetting sound of air nozzles includes noise of a wide fre- quency range, which will affect the operation of the E4C. Do not use an air nozzle near the E4C. The sensing distance of the E4C will decrease if there is any water drops on the surface of the emitter or receiver. The reflective model may not detect any objects if there is any object absorbing sound, such as powder and cotton, on the sur- face of the emitter or receiver. 8 E4C E4C Mutual Interference If more than one Unit is closely mounted together or used in a narrow space, the mutual interference of the Sensors will result. To prevent this, set the MON/SYN selector to SYN and check that no mutual interference results. Connections The cord length between the Sensor and Amplifier can be a max- imum of 20 m provided that the cord is a three-conductor, shielded cord (6 dia., UL2791) with 7/0.25 dia. If the Emitter is the E4C-TS50S, however, use a two-conductor, non-shielded cord (6 dia. UL20276) with 7/0.25 dia. Do not wire the lines of the E4C along with high-tension or power lines in the same conduit or close together, otherwise the E4C may malfunction due to inductive noise. The power supply lines of the Amplifier can be extended up to 100 m provided that the size of the cord is 0.3 dia. or more. Others Be sure not to turn the sensitivity adjuster excessively. If the sen- sitivity adjuster is turned exceeding the permissible range, no sensitivity adjustment will be possible again. Take the measures shown in the following illustrations if multiple reflection results. 5-dia. slit Wall Wall Urethane rubber or sponge The sensing distance will be, however, reduced to half (i.e., 10 to 17 cm) if the slit is used. If the sensing zone is set to a small value (i.e., a few centimeters) on the E4C reflective model, the E4C may require a warming-up time of 3 minutes or more after the E4C is turned ON. 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. 9 Terms and Conditions of Sale 1. Offer; Acceptance. 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