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Part: E4A-3KE4A-3K
Category:
Sensors
-> Ultrasonic Sensors
Description: E4A-3K Ultrasonic Long Range Data Sheet
Company: Omron Corporation
Datasheet: Download E4A-3KE4A-3K datasheet File size : 122 kB
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Datasheet text preview:
R
Ultrasonic Long Range
Long Sensing Distance of 0.3 to 3 m H Background suppression for accurate
sensing
E4A-3K
H Fast alignment troubleshooting with
stable operation check function
H Mutual interference protection built in H Self-contained, no external power
supply required
Ordering Information
Supply voltage 12 to 24 VDC 120/240 VAC Sensing type Reflective Sensing distance 0.3 to 3 m Part number E4A -3K DC12/24 E4A -3K AC120/240
Specifications
J RATINGS/CHARACTERISTICS
Part number Sensing method Supply voltage Power consumption Sensing distance Standard sensing object Minimum sensing object Directional angle Ultrasonic oscillation frequency Response time Control output Indicators Ambient operating temperature Relative humidity Operate Release E4A-3K DC12/24 Reflective 12-24 VDC, ¦10% ripple (p-p) ¦10% 150 mA max. 120/240 VAC, 50/60 Hz, ¦10% Approx. 2.5 VA E4A-3K AC120/240
Adjustable between 0.3 and 3 m (selectable ranges of 0.3 to 2 m and 1.3 to 3 m) 100 mm dia., 1.5 m long metal or plastic round pipe 50 x 50 mm flat plate ¦25° Approx. 40 kHz 0.25 s 0.5 s Contact output : SPDT 3 A at 220 VAC/24 VDC (resistive load) Operation, red LED - 20°C to 55°C (- 4°F to 131°F) with no icing 45% to 85%
(This table continues on the next page.)
E4A-3K
Specifications Table -- continued from previous page
Part number Insulation resistance Dielectric strength Vibration resistance Shock resistance Life expectance (output relay) Enclosure rating Approvals Weight UL, cUL Electrical E4A-3K DC12/24 20 M minimum at 500 VDC 1500 VAC, 50/60 Hz for 1 minute 10 to 25 Hz, 1.5-mm double amplitude for 2 hours each in X, Y and Z axes 500 m/s2 (approx. 50 g) 6 times each in X, Y and Z axes Mechanical 20,000,000 operations minimum 100,000 operations minimum IP60 Recognized, File No. E41515 Approx. 600 g with mounting bracket Approx. 500 g without mounting bracket E4A-3K AC120/240
E4A-3K
J OPERATING RANGE AND SENSING ZONE
1. Distance Selector Set to a Range Between 0.3 and 2 m
Sensor
2. Distance Selector Set to a Range Between 1.3 and 3 m
Sensor If the sensing distance (A) is set to 3 m, the sensing zone (B) is 1.5 to 3 m. If the sensing distance (A) is set to 1.3 m, the sensing zone (B) is 0 to 1.3 m.
Reference level
If the sensing distance (A) is set to 2 m, the sensing zone (B) is 1.5 to 2 m. If the sensing distance (A) is set to 0.3 m, the sensing zone (B) is 0 to 0.3 m. Reference level
A: Sensing distance The sensing distance (A) is adjustable with the distance selector to a range between 0.3 and 2 m.
A: Sensing distance The sensing distance (A) is adjustable with the distance selector to a range between 1.3 and 3 m.
Blind zone B: Sensing zone
Sensing zone (B) 0.5m Sensing zone (B) 1.5 m
The distance from the reference level to the operating range (sensing zone). The distance from the reference level to the operating range (sensing zone).
An object may be detected due to multiple reflection if the object is in the blind zone, in which case 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. Note: Multiple reflection is a phenomenon caused by an ultrasonic beam reflected several times repeatedly between the sensing object and the Sensor or nearby objects such as the ceiling.
2
E4A-3K
E4A-3K
Engineering Data
J 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 ultrasonic beam. The operating zone varies with the sensing distance and sensing object.
Distance (cm) Distance (cm) Distance (cm)
Sensing object : 100 dia. x 1,000 (mm)
Sensing object: 2 0 0 x 2 0 0 (mm) flat plate
Sensing object : 2 5 d i a . x 1 0 0 (mm)
Operating zo n e (cm)
Ultrasonic sensor
Operating zo n e (cm)
Operating zo n e (cm)
Ultrasonic sensor
Operating zo n e (cm)
Operating zo n e (cm)
Ultrasonic sensor
Operating zo n e (cm)
·
If more than one Unit is used within a maximum distance of 8m, be sure to wire the sensor for synchronous operation. Refer to External Connections for details.
·
If there is a door between two Units located for different operating zones as shown in the following illustration, be sure to wire the Units for synchronous operation, or interference may occur when the door opens.
Sensor
8 m max.
Door
3
E4A-3K
E4A-3K
Dimensions
Unit: mm (inch)
J E4A-3K
6.6 56 8 17 6.6 dia.
Mounting Holes
Two, 6.5 dia. 22 40
40 (1.57)
32.5 24 dia.
159 (6.26) 150 118 50 (1.97) 3 105 Rubber cap Indicator
4
130 (5.12)
92
104 (4.09)
40
29
23
4
E4A-3K
E4A-3K
Installation
J EXTERNAL CONNECTIONS
Example of Connections of the E4A-3K in Asynchronous Operation Example of Connections of the E4A-3K in Synchronous Operation
ON ON OFF OFF
ON OFF
100/120 VAC 200/240 VAC
100/120 VAC 200/240 VAC
100/120 VAC 200/240 VAC
Tc -+ 12~24 VDC
Ta Tb
Tc Ta Tb -+ 12~24 VDC Contact output
Contact output
-+ 12~24 VDC
Tc Ta Tb Contact output
Note: 1. If the synchronous operation of the E4A-3K is not required, set the reference pulse selector to ON. Keep terminals 7 and 8 open. 2. Use a cable with an external diameter of 10 mm max. for wiring.
Note: 1. If the synchronous operation of the E4A-3K is required, set the reference pulse selector of only one Unit to ON. Then connect terminal 7 of all the Units together and do the same for terminal 8. 2. A maximum of 50 sensors can be connected in synchronous operation. 3. Do not wire the lines for synchronous operation use (i.e., wires connecting to terminals 7 and 8) alongside power lines in the same conduit. 4. Use a shielded cable with an external diameter of 10 mm max. for wiring. 5. Make sure that all the Units in synchronous operation are turned on, otherwise none of the Units will operate.
Adjustments
J REFERENCE PULSE SELECTOR POSITION
If more than one Unit is used at one location, the Units will need to be in synchronous operation to prevent mutual interference. In that case, set the reference pulse selector of only one Unit to ON. Set the reference pulse selector of each Unit to ON if the Units are in asynchronous operation. Refer to External Connections for details.
J SENSING DISTANCE ADJUSTMENTS
Before adjusting the sensing distance, remove the rubber cap 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 according to the desired sensing distance and operating range. 2. To set the sensing distance, first locate a flat plate as a sensing object that is approximately 20-by-20 cm at the desired sensing distance. Then gradually turn the sensing distance adjuster clockwise (i.e., in the direction increasing the sensing distance) until the relay operates. The operation indicator will be lit when the relay operates.
Operation indicator
Sensing distance adjuster Distance selector
Reference pulse selector
5
Others parts begin by e4
E4-1
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