E49-DD5

E4DA E4DA Ultrasonic Displacement Sensor E4DA Sensor’s Narrow Ultrasonic Beam Accurately Detects Small Objects, Provides Linear Analog Output for Inspection and Measurement ■ Narrow 5 mm ultrasonic beam detects objects as small as 1 mm diameter at 50 mm distance with 0.2 mm resolution ■ Amplifier provides three inspection outputs–high, pass and low ■ Amplifier provides 4 to 20 mA analog output ■ Alarm output helps identify irregular beam reflection ■ Input hold function retains previous input level, up to 40 ms, to stabilize operation ■ External gate input and 40 ms OFF-delay available on amplifier ■ Fast, 2 ms response time Sensing Ultrasonic beam Supply voltage 12 to 24 VDC Output ■ 30 to 70 mm sensing distance 30 to 70 mm 80 mA, 30 VDC 4 to 20 mA Ordering Information ■ SENSOR Sensing distance Part number 30 to 70 mm (1.18 to 2.76 in) E4DA-LS7 ■ AMPLIFIER Description Part number High, pass and low discrimination outputs E4DA-WL1C ■ ACCESSORIES Description Part number Replacement sensor mounting bracket E39-L52 5-meter extension cable between sensor and amplifier E49-DD5 ■ LINEAR OUTPUT VS. SENSING DISTANCE The linear output of the sensor is locked between 21.8 to 28 mA when the target is outside the measurement range. There is no linear output when the target measurement distance is less than 26 mm. Measurement range Linear output (mA) 20 4 26 30 40 50 60 70 Sensing distance (mm) 80 101 E4DA E4DA Specifications ■ SENSOR E4DA-LS7 Method of detection Ultrasonic displacement Sensing distance 30 to 70 mm (1.18 to 2.76 in) with 40 x 40 mm (1.57 x 1.57 in) flat object Minimum detectable object 1 mm (0.04 in) diameter at 50 mm (1.97 in) sensing distance without a background object Resolution 0.2 mm (0.008 in) at 50 mm (1.97 in) Differential travel 1 to 3% of 70 mm (2.76 in) rated sensing distance Directional angle ±3° max. Variation due to temperature changes ±4% full scale max. for output value at 25°C in ambient range of -10° to 55°C (14° to 131°F) Variation due to voltage changes ±2% full scale max. over operating voltage range of 10.8 to 26.4 VDC Indicators SENSING (red LED) Materials Plastic case Mounting Side surface mount with two through holes. E39-L52 bracket and mounting hardware supplied. Connections Cable, 2 m (6.6 ft) length, supplied Weight 130 g (4.6 oz.) Enclosure ratings Approvals UL — NEMA 2 IEC 144 IP66 UL — CSA — Ambient operating temperature -10° to 55°C (14° to 131°F) ■ AMPLIFIER E4DA-WL1C Supply voltage 12 to 24 VDC Operating voltage 10.8 to 26.4 VDC; ripple 10% max. peak-to-peak Current consumption 200 mA Response time 2 ms External gate input Control outputs Analog Type No-voltage contact or NPN solid-state input Signal voltage level ON: 0 to 1 V, 1 mA minimum OFF: 4 to 24 V, 15 mA max. or open between terminals Range 4 to 20 mA, 300 Ω max. load impedance Linearity ±1% full scale max. ON/OFF Number Three (HIGH, PASS, LOW) Type Optoisolated transistor outputs Rating 80 mA, 30 VDC max. Residual voltage 1 V max. Alarm Number One Type Optoisolated transistor output Rating 80 mA, 30 VDC max. Residual voltage 1 V max. Materials Plastic case Mounting Two through holes for surface mounting using M4 screws Connection Screw terminals Weight 230 g (8.1 oz.) Enclosure ratings Approvals UL — NEMA — IEC 144 IP30 UL — CSA Ambient operating temperature 102 — -10° to 55°C (14° to 131°F) E4DA E4DA Nomenclature ■ SENSOR AND AMPLIFIER Shorting wire to disable external gate input To use external gate input, connect a contact or NPN input device with 15 mA, 24 VDC max. switching capacity. E4DA-WL1C Amplifier I/O terminal Distance set point indicators Sensing indicator lights when receiving reflected sonic beam Alarm output indicator E4DA-LS7 Sensor Output indicators HIGH output distance setting (4 rotations) Sensing indicator lights when receiving reflected sonic beam LOW output distance setting (4 rotations) Output mode selector switch enables 40 ms OFF-delay timer Connector for sensor Input hold selector switch determines type of input signal filtering: none (0 ms), 40 ms input hold, and extended input hold to stabilize input and eliminate chattering 103 E4DA E4DA Operation ■ FUNCTIONS — AMPLIFIER Classification An analog 4 to 20 mA signal will be output from amplifier terminals 2 and 8 according to the distance measured to a target within the 30 to 70 mm measurement range. The output will be locked between 21.8 and 28 mA when the target is beyond the maximum measurement distance. Note: A 10-minute warm-up period is required from power-up to allow the linear output to stabilize. O High setpoint U T P U Pass setpoint T S The high setpoint output operates according to the high setpoint distance. Rated 80 mA at 30 VDC maximum, the output with indicator is energized when the target measurement distance is 0.2 mm greater than the high setpoint distance. The low setpoint output operates according to the low setpoint distance. Rated 80 mA at 30 VDC maximum, the output is energized when the target measurement distance is 0.2 mm less than the low setpoint distance. Alarm The alarm output operates according to the 30 mm minimum measurement distance. Rated 80 mA at 30 VDC maximum, the alarm output is energized when the target measurement distance is less than the 30 mm Low range I Gate input N P U T A D J U S T M E N T S The pass setpoint output operates according to the high setpoint distance and the low setpoint distance. Rated 80 mA at 30 VDC, the output with indicator is energized when the target measurement distance is less than the high setpoint distance but greater than the low setpoint distance. Low setpoint Sensitivity (amplifier I N and sensor) D Alarm I C A High range T O R Pass range S 104 Function Linear output The sensitivity indicator illuminates when the sensor's receiver is detecting a reflected sonic beam off the target. The alarm indicator illuminates when the target measurement distance is less than the 30 mm minimum measurement distance but greater than the 26 mm uncertain operation measurement distance. The high range indicator illuminates at the same time the high setpoint output is on. The pass range indicator illuminates at the same time the pass setpoint output is on. The low range indicator illuminates at the same time the low setpoint output is on. The gate input, rated 15 mA at 24 VDC maximum, synchronizes the start of the sonic measurement with the correct position of the target. High range setpoint dial Used to adjust the high setpoint measurement distance and control output. The 4-turn potentiometer allows for fine tuning of the distance setting. The reference scale above the dial is labeled 30 to 70 mm and marked in 5 mm increments. Low range setpoint dial Used to adjust the low setpoint measurement distance and control output. The 4-turn potentiometer allows for fine tuning of the distance setting. The reference scale above the dial is labeled 30 to 70 mm and marked in 5 mm increments. Mode switch In the timer position, a 40 ms OFF-delay is added to the 2 ms response time for the pass setpoint output only. The high and low setpoint outputs are disabled during the 40 ms OFF-delay. Input hold switch The input hold function stabilizes target measurement by adding a time delay until the next stabilized sonic input is received. This minimizes output signal chatter due to unstable input signals from rough surfaces of changes in target position. E4DA E4DA ■ THREE-STAGE CONTROL OUTPUT The two variable distance adjusters on the amplifier front panel are used to establish three control output stages from the 4 to 20 mA input signal. Each four-turn adjuster allows fine tuning of the setting. The reference scale above the adjuster is in 5 mm increments. The linear output current is proportional to the distance to the detected object and is independent of the distance settings. In the example below, the LOW setting is at 40 mm, and the HIGH setting is at 60 mm. The table below summarizes the three output ranges: Target LOW range 30 to 39.8 mm PASS range 40 to 60 mm HIGH range 60.2 to 70 mm The 0.2 mm resolution accounts for the decimal figures. The distance from the sensor face to 25 mm is a multiple reflecting range where output is unstable and should not be used. From 26 mm to 30 mm the object is out of detectable range, so an ALARM output occurs. 26 ■ OUTPUT OFF-DELAY FUNCTION The E4DA amplifier’s response time of 2 ms may provide an output signal too fast for a programmable controller to read. The timer function provides a 40 ms OFF-delay that holds only the PASS output for the full duration. The High and Low outputs are disabled and do not operate during the OFFdelay. Whether the gate input is used, or not used, the OFFdelay timer will operate. The output OFF-delay timer is independent of the input HOLD timing. No timer function. Disables OFF-delay timer. 40 ms OFF-delay enabled. Holds only the PASS output for the full duration. 105 E4DA E4DA ■ INPUT HOLD FUNCTION When the detected object tilts or when it has a rough surface that absorbs the ultrasonic beam, the E4DA sensor may judge that there is no detected object or the signal has not been returned, causing the output to be unstable (chatter). The input hold function, stabilizes detection by adding a time delay until the next stable input is received. The three-position slide switch located on the front panel of the amplifier, has settings for 0 ms, 40 ms (for time delay) and EXT for extended delay. The 0 ms setting disables the input hold function. The 40 ms setting enables an internal timer to hold a stable input value for up to 40 ms until a new stable value is input. The hold function is automatically cancelled when a new stable value is input. The EXT setting provides an extended hold period until a new stable input value is received. 106 E4DA E4DA Dimensions Unit: mm (inch) ■ AMPLIFIER E4DA-WL1C 67.4 (2.65) 82.3 (3.24) 80 (3.15) Mounting holes 74.8 (2.94) 84 ± 2 (3.31 ± 0.08) 21.8 (0.86) 16 (0.63) 17.5 (0.69) 6.2 (.24) 13 (0.51) 57 ± 0.3 (2.24 ± 0.01) 9.6 (0.38) 20 (0.79) 40 (1.57) 46.9 (1.85) 12.7 (0.50) 10.5 (0.41) 11.2 (0.44) 15 (0.59) dia. ■ SENSOR E4DA-LS7 Mounting holes 32 (1.26) 17 (0.67) 9 (0.35) 3.8 (0.15) 16 (0.63) 3.2 (0.13) 40 (1.57) 13 (.51) 16.9 (0.67) 13.2 (0.52) 48 (1.89) 3.2 (0.13) 20 (0.79) 18 3 (0.12) (0.71) 2 (0.08) 40 (1.57) 3.3 (0.13) 16.3 (0.64) 3.5 (0.14) 11.2 (0.44) 33 (1.30) 28.5 (1.12) 26 (1.02) 1.2 (0.05) * 2 m (6.56 ft) oil-resistant, vinyl-insulated, shield wire, 6 mm OD ■ OPTIONAL EXTENSION CABLE E49-DD5 33.8 (1.33) 5m (16.4 ft) 36 (1.42) 15 (0.59) dia. 5 (0.20) dia. * * 5 m (16.4 ft) oil-resistant, vinyl-insulated, round Outside 6 dia. 5 m 107 E4DA E4DA Engineering Data ■ LINEAR OUTPUT VS. SENSING DISTANCE The linear output of the sensor is locked between 21.8 to 28 mA when the target is outside the measurement range. There is no linear output when the target measurement distance is less than 26 mm. Measurement range Linear output (mA) 20 4 26 30 40 50 60 70 Sensing distance (mm) 80 ■ MINIMUM DETECTABLE OBJECT The size of the minimum detected object depends on whether or not a background object is present. To detect a very small object, keep the background at least 40 mm away from the object. With Background Object Without Background Object X = 30 mm X = 70 mm X = 50 mm ■ OPERATING RANGE The operating range depends on the target object's direction of approach. 108 E4DA E4DA ■ DIRECTIONAL ANGLE vs. OPERATING DISTANCE Note : 1. The maximum allowable inclination angle depends on the target object's direction of approach. 2. To reduce the influence of inclination, use the sensor within the detecting distance range of 30 to 50 mm. 3. If surface roughness or unevenness of the detected object affects the operation, use the input hold function described in "Operation" to make the output stable. ■ INFLUENCE OF TEMPERATURE VARIATION The influence of temperature variation depends on the detecting distance. Sensor and Amplifier at the Same Temperature Sensor at Variable Temperature, Amplifier at 25°C ■ DETECTING ROUND OBJECTS Use the layout below to detect round objects when a background object is present. θ > 10 ° 109 E4DA E4DA ■ OUTPUT CIRCUIT DIAGRAM The figures in small circles indicate terminal numbers. Linear output 4 to 20 mA, load impedance 300 Ω max. 12 to 24 VDC External gate input 15 mA max., 12 to 24 VDC Alarm output 80 mA, 30 VDC max. HIGH output 80 mA, 30 VDC max. PASS output 80 mA, 30 VDC max. LOW output 80 mA, 30 VDC max. 0V Connections Terminals 1 and 2 are intentionally shorted. To use an external gate input, connect an external switching device (NPN output sensor or no-voltage contact switch) to terminals 1 and 2. Alarm Low Pass High (0 V) (0 V) (0 V) (0 V) 0V High (+ V) Pass (+V) 12 to 24 VDC Low (+V) Alarm (+V) 4 to 20 mA Precautions ■ INSTALLATION AND MAINTENANCE PRECAUTIONS Avoid mutual interference by placing sensors side by side, more than 5 mm apart. Mutual interference occur when the object is inclined or when sensors are mounted opposite one another. Do not use the sensor in the following environmental conditions that adversely affect the sound wave transmission through the air. 110 • Locations subject to air convection • Locations with temperature differences within the sensing area • Rapid change in air flow within the operating range of the sensor • Use of a transceiver near the sensor Ultrasonic sensors may not be capable of detecting soundabsorbent materials, including: cotton, powders, foam, froth, soft porous materials, and so forth. Condensation or drops of water on the vibrator surface of the ultrasonic sensor may decrease detecting distance. A 10-minute warm-up period is required from power-up to allow the linear output to stabilize. Clean dust off the vibrator surface of the sensor using a blast of air or a cotton swab. Do not apply pressure on the vibrator surface. E4DA E4DA NOTE: DIMENSIONS ARE SHOWN IN MILLIMETERS. To convert millimeters to inches divide by 25.4. OMRON ELECTRONICS LLC. OMRON ON-LINE OMRON CANADA, INC. One East Commerce Drive Schaumburg, IL 60173 Global - http://www.omron.com USA - http://www.omron.com/oei Canada - http://www.omron.com/oci 885 Milner Avenue Scarborough, Ontario M1B 5V8 1-800-55-OMRON Cat. No. GC MSEN4 04/01 Specifications subject to change without notice. 416-286-6465 Printed in the U.S.A. 111 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Omron: E49-DD5