Omron E2A3 - Datasheet
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Long Distance Cylindrical Proximity Sensor
E2A3
Extra long distance for increased protection and sensing performance
• triple distance proximity sensors for flush mounting requirements.
• designed and tested for extra long life.
Ordering Information
DC 3-wire Models
Size Type
Sensing distance
Connection
Body material
Thread length
Output Operation mode: NO Operation mode: NC
M8 Shielded 3.0mm
Pre-wired
M12 connector
M8 connector
(3-pin)
Stainless steel
(See note.)
27 (40) mm
27 (44) mm
27 (40) mm
PNP
NPN
PNP
NPN
PNP
NPN
E2A3-S08KS03-WP-B1 2M E2A3-S08KS03-WP-B2 2M
E2A3-S08KS03-WP-C1 2M E2A3-S08KS03-WP-C2 2M
E2A3-S08KS03-M1-B1 E2A3-S08KS03-M1-B2
E2A3-S08KS03-M1-C1
E2A3-S08KS03-M5-B1
E2A3-S08KS03-M5-C1
E2A3-S08KS03-M1-C2
E2A3-S08KS03-M5-B2
E2A3-S08KS03-M5-C2
M12 Shielded 6.0mm
M18 Shielded 11.0mm
M30 Shielded 20.0mm
Pre-wired
M12 connector
Pre-wired
M12 connector
Pre-wired
M12 connector
Brass
Brass
Brass
34 (50) mm
34 (49) mm
39 (60) mm
39 (54) mm
44 (65) mm
44 (59) mm
PNP
NPN
PNP
NPN
PNP
NPN
PNP
NPN
PNP
NPN
PNP
NPN
E2A3-M12KS06-WP-B1 2M E2A3-M12KS06-WP-B2 2M
E2A3-M12KS06-WP-C1 2M E2A3-M12KS06-WP-C2 2M
E2A3-M12KS06-M1-B1
E2A3-M12KS06-M1-C1
E2A3-M18KS11-WP-B1 2M E2A3-M18KS11-WP-B2 2M
E2A3-M18KS11-WP-C1 2M E2A3-M18KS11-WP-C2 2M
E2A3-M18KS11-M1-B1
E2A3-M18KS11-M1-C1
E2A3-M30KS20-WP-B1 2M E2A3-M30KS20-WP-B2 2M
E2A3-M30KS20-M1-B1
E2A3-M30KS20-M1-C1
Note:Material specifications for stainless steel housing case: 1.4305 (W.-No.), SUS303 (AISI), 2346 (SS).
E2A3-M12KS06-M1-B2
E2A3-M12KS06-M1-C2
E2A3-M18KS11-M1-B2
E2A3-M18KS11-M1-C2
E2A3-M30KS20-WP-C1 2M E2A3-M30KS20-WP-C2 2M
E2A3-M30KS20-M1-B2
E2A3-M30KS20-M1-C2
.
E2A3
D-35
Connectivity
E2A3 Sensors are available with the following connectors and cable materials:
Pre-wired Models
Connector Models
Standard connectors: M12, M8 (3-pin) -M1, -M5
Standard cable lengths are 2 m and 5 m.
For other cable lengths, please contact your OMRON representative.
Standard cable material: PVC (4-mm dia.)
Model Number Legend
-WP
E2A
@-@@@@@-@-@@-@@
1 2 3 4 5 6 7 8 9 10 11 12
Example: E2A3-M12KS06-M1-B1 Triple distance, M12, standard barrel, shielded, Sn = 6 mm, M12 connector, PNP-NO
E2A3-S08KS03-WP-B1 2M Triple distance, M8 stainless steel, standard barrel, shielded, Sn = 3 mm, pre-wired PVC cable,
PNP-NO, cable length = 2 m
1. Basic name 8. Kind of connection
E2A
2. Sensing technology
Blank:
3:
Standard double distance
Triple distance
3. Housing shape and material
M: Cylindrical, metric threaded, brass
S: Cylindrical, metric threaded, stainless steel
4. Housing size
08:
12:
18:
30:
8 mm
12 mm
18 mm
30 mm
5. Barrel length
K: Standard length
L:
6. Shield
Long body
S:
N:
Shielded
Non-shielded
7. Sensing distance
Numeral: Sensing distance: e.g., 03 = 3 mm, 11 = 11 mm
WP:
M1:
Pre-wired, PVC, 4-mm dia.
M12 connector (4-pin) *
M5: M8 connector (3-pin)
9. Power source and output
B:
C:
DC, 3-wire, PNP open collector
DC, 3-wire, NPN open collector
10.Operation mode
1: Normally open (NO)
2: Normally closed (NC)
11.Specials (e.g., cable material, oscillating frequency)
12.Cable length
Blank: Connector Model
Numeral: Cable length
D-36 Inductive Sensors
Specifications
DC 3-wire Models
Size
Type
M8
Shielded
M12
Shielded
M18
Shielded
M30
Shielded
Item
Sensing distance
E2A3-S08KS03-@@-B@
E2A3-S08KS03-@@-C@
3 mm
± 10%
E2A3-M12KS06-@@-B@
E2A3-M12KS06-@@-C@
6 mm
± 10%
Setting distance
Ambient temp. of
−25 to 70°C
Ambient temp. of
−10 to 60°C
Differential travel
0 to 2.1 mm
0 to 2.4 mm
0 to 4.2 mm
0 to 4.8 mm
0 to 7.7 mm
0 to 8.8 mm
Target
20% max. of sensing distance
Ferrous metal (The sensing distance decreases with non-ferrous metal.)
Standard sensing object 9
× 9 × 1 mm
Response frequency (See note 1.) 700 Hz
18
× 18 × 1 mm
350 Hz
33
× 33 × 1 mm
250 Hz
Power supply voltage
(operating voltage range)
Current consumption
12 to 24 VDC. Ripple (p-p): 10% max.
(10 to 32 VDC)
10 mA max.
E2A3-M18KS11-@@-B@
E2A3-M18KS11-@@-C@
11 mm
± 10%
Output type
Control output
Indicator
-B models: PNP open collector
-C models: NPN open collector
Load current 200 mA max. (32 VDC max.)
Residual voltage 2 V max. (under load current of 200 mA with cable length of 2 m)
Operation indicator (Yellow LED)
E2A3-M30KS20-@@-B@
E2A3-M30KS20-@@-C@
20 mm
± 10%
0 to 14 mm
0 to 16 mm
60
× 60 × 1 mm
80 Hz
Operation mode
Protection circuits
Ambient air temperature
Temperature influence
Ambient humidity
Voltage influence
Insulation resistance
Dielectric strength
Vibration resistance
-B1/-C1 models: NO
-B2/-C2 models: NC
For details, refer to the timing charts.
Power source circuit reverse polarity protection,
Surge suppressor, Shortcircuit protection
Output reverse polarity protection, Power source circuit reverse polarity protection, Surge suppressor, Short-circuit protection
Operating:
−25°C to 70°C, Storage: −25°C to 70°C
±20% max. of sensing distance at 23°C within temperature range of −25°C to 70°C
−10% to +20% of sensing distance at 23°C within temperature range of −10°C to 60°C
Operating: 35% to 95%, Storage: 35% to 95%
±1% max. of sensing distance in rated voltage range ±15%
50 M
Ω min. (at 500 VDC) between current-carrying parts and case
1,000 VAC at 50/60 Hz for 1 min between current-carrying parts and case
10 to 55 Hz, 1.5-mm double amplitude for 2 hours each in X, Y, and Z directions
Shock resistance
Standards and listings
(See note 2.)
500 m/s 2 , 10 times each in X, Y, and Z directions
IP67 after IEC 60529
IP69K after DIN 40050
EMC after EN60947-5-2
1,000 m/s 2 , 10 times each in X, Y and Z directions
Connection method
-WP models: Pre-wired Models (4-mm dia. PVC cable with length of 2 m)
-M1 models: M12 4-pin Connector Models
-M5 models: M8 3-pin Connector Models
Pre-wired Models Approx. 65 g Approx. 85 g Approx. 160 g
Weight
(packed state)
Approx. 35 g Approx. 70 g
Approx. 280 g
Approx. 200 g
Material
Case
Sensing surface
Cable
Clamping nut
Stainless steel
PBT
PVC
Stainless steel
Brass-nickel plated
Brass-nickel plated
Note 1. The response frequency is an average value. Measurement conditions are as follows: standard sensing object, a distance of twice the standard sensing object length between sensing objects, and a set distance of half the sensing distance.
2. For USA and Canada: use class 2 circuit only.
E2A3
D-37
Engineering Data
Operating Range (Typical)
12
10
8
6
4
2
0
−
30
22
20
18
16
14
−
20
Y
X
E2A3-M30KS20
E2A3-M18KS11
E2A3-M12KS06
E2A3-S08KS03
−
10 0 10 20 30
Distance Y (mm)
Influence of Sensing Object Size and Materials
E2A3-S08KS03
3.5
@d
X t = 1 mm
3.0
Iron
E2A3-M12KS06
7
@d
X t = 1 mm
6
Iron
2.5
2.0
Stainless steel (SUS303)
1.5
1.0
Brass
Aluminum
Copper
0.5
0.0
Side length of sensing object d (mm)
E2A3-M30KS20
25
@d
X t = 1 mm
20
Iron
Stainless steel (SUS303)
15
3
2
5
4
1
0
Stainless steel (SUS303)
Brass
Aluminum
Copper
Side length of sensing object d (mm)
E2A3-M18KS11
12
@d t = 1 mm
X
10
8
6
4
2
Iron
Stainless steel (SUS303)
Brass
Aluminum
Copper
0
Side length of sensing object d (mm)
10
Brass
Aluminum
Copper
5
0
0 10
Side length of sensing object d (mm)
D-38 Inductive Sensors
Operation
DC 3-wire Models
PNP Output
Operation mode
NO
NC
Model
E2A3-@-@-B1
E2A3-@-@-B2
Non-sensing area
Timing chart
Sensing area
Proximity
Sensor
Sensing object
(%)
100 0
ON
OFF
Yellow indicator
ON
OFF
Control output
Non-sensing area
Sensing object
(%)
100
Sensing area
Proximity
Sensor
0
ON
OFF
Yellow indicator
ON
OFF
Control output
Output circuit
Brown
+V
Proximity
Sensor main circuits
(See note 1.)
Black
Load
Blue
0 V
Note 1: With M8 Size Models, there is no output reverse polarity protection diode.
M12 Connector
Pin Arrangement
(See note 2.)
M8 Connector
(3-pin)
Pin Arrangement
2
1
4
3
1
4
3
Note 2: Terminal 2 of the M12 connector is not used.
Brown
+V
Proximity
Sensor main circuits
(See note 1.)
Black
(M8 connector: )
Load
Blue
0 V
Note 1: With M8 Size Models, there is no output reverse polarity protection diode.
M12 Connector
Pin Arrangement
(See note 2.)
M8 Connector
(3-pin)
Pin Arrangement
4
1
1 3
2 4
3
Note 2: Terminal 4 of the M12 connector is not used.
E2A3
D-39
DC 3-wire Models
NPN Output
Operation mode
NO
NC
Model
E2A3-@-@-C1
E2A3-@-@-C2
Non-sensing area
Timing chart
Sensing area
Proximity
Sensor
Sensing object
(%) 100 0
ON
OFF
Yellow indicator
ON
OFF
Control output
Non-sensing area
Sensing object
(%) 100
Sensing area
Proximity
Sensor
0
ON
OFF
Yellow indicator
ON
OFF
Control output
Output circuit
Brown
+V
Proximity
Sensor main circuits
(See note 1.)
Black
Load
Blue
0 V
Note 1: With M8 Size Models, there is no output reverse polarity protection diode.
M12 Connector
Pin Arrangement
(See note 2.)
M8 Connector
(3-pin)
Pin Arrangement
1
4
3
2 4
1
3
Note 2: Terminal 2 of the M12 connector is not used.
Brown
+V
Proximity
Sensor main circuits
Load
(See note 1.)
Black
(M8 connector: )
Blue
0 V
Note 1: With M8 Size Models, there is no output reverse polarity protection diode.
M12 Connector
Pin Arrangement
(See note 2.)
M8 Connector
(3-pin)
Pin Arrangement
4
1
1 3
2 4
3
Note 2: Terminal 4 of the M12 connector is not used.
D-40 Inductive Sensors
Dimensions
Note:All units are in millimeters unless otherwise indicated.
Pre-wired Models
E2A3-S08KS03-WP-@@
13 4
26.8
40
5
M8
×
1
(See note 1.)
Indicator (See note 2.)
Two, clamping nuts
Note 1. 4-dia. vinyl-insulated round cable with 3 conductors (Conductor cross section: 0.3 mm 2 ; Insulator diameter: 1.3 mm),
Standard length: 2 m
2. Operation indicator (yellow)
E2A3-M12KS06-WP-@@
17
5.5
34
50.4
12
(See note 1.)
Indicator (See note 2.)
M12
×
1
Two, clamping nuts
Note 1. 4-dia. vinyl-insulated round cable with 3 conductors (Conductor cross section: 0.3 mm
2
; Insulator diameter: 1.3 mm),
Standard length: 2 m
2. Operation indicator (yellow)
E2A3-M18KS11-WP-@@
24 6
39
59.6
15
(See note 1.)
Indicator (See note 2.)
M18
×
1
Two, clamping nuts
Note 1. 4-dia. vinyl-insulated round cable with 3 conductors (Conductor cross section: 0.3 mm 2 ; Insulator diameter: 1.3 mm),
Standard length: 2 m
2. Operation indicator (yellow)
E2A3-M30KS20-WP-@@
36
7
44
64.6
15
(See note 1.)
Indicator (See note 2.)
M30
×
1.5
Two, clamping nuts
Note 1. 4-dia. vinyl-insulated round cable with 3 conductors (Conductor cross section: 0.3 mm 2 ; Insulator diameter: 1.3 mm),
Standard length: 2 m
2. Operation indicator (yellow)
M12 Connector Models
E2A3-S08KS03-M1-@@
13
4
26.8
43.9
5
M12
×
1
M8
×
1
Indicator (See note.)
Two, clamping nuts
Note:Operation indicator (yellow LED, 4
×90°)
E2A3-M12KS06-M1-@@
17
5.5
34
49.2
12
M12
×
1
Indicator (See note.)
M12
×
1
Two, clamping nuts
Note:Operation indicator (yellow LED, 4
×90°)
E2A3-M18KS11-M1-@@
24 6
39
54.2
15
M12
×
1
Indicator (See note.)
M18
×
1
Two, clamping nuts
Note:Operation indicator (yellow LED, 4
×90°)
E2A3-M30KS20-M1-@@
36 7
44
59.2
15
M12
×
1
Indicator (See note.)
M30
×
1.5
Two, clamping nuts
Note:Operation indicator (yellow LED, 4
×90°)
E2A3
D-41
M8 Connector Models
E2A3-S08KS03-M5-@@
13 4
26.8
39.8
5
M8
×
1
M8
×
1
Indicator (See note.)
Two, clamping nuts
Note:Operation indicator (yellow LED, 4
×90°)
Mounting Hole Cutout Dimensions
F
External diameter of Proximity Sensor
Dimension F (mm)
M8
8.5 dia.
+0.5
0
M12
M18
12.5 dia.
+0.5
0
18.5 dia.
+0.5
0
M30
30.5 dia.
+0.5
0
D-42 Inductive Sensors
Safety Precautions
Precautions for Safe Use
WARNING
This product is not designed or rated for ensuring safety of persons.
Do not it for such purposes.
Power Supply
Do not impose an excessive voltage on the E2A3, otherwise it may be damaged. Do not impose AC current (100 to 240 VAC) on any DC
Model, otherwise it may be damaged.
Load Short-circuit
Do not short-circuit the load, or the E2A3 may be damaged.
The E2A3’s short-circuit protection function will be valid if the polarity of the supply voltage is correct and within the rated voltage range.
Precautions for Correct Use
Designing
Power Reset Time
The Proximity Sensor is ready to operate within 100 ms after power is supplied. If separate power supplies are connected to the Proximity Sensor and load, be sure to supply power to the Proximity Sensor before supplying power to the load.
Effects of Surrounding Metal
When mounting the E2A3 within a metal panel, ensure that the clearances given in the following tables are maintained.
l d dia.
m n
D
Model
E2A3
Shielded m
D n m d
Dimension
l
Material of surrounding metal
0.5 (*)
9
Ferrous metal
M8
Nonferrous metal
2 (*)
24
0.5
24
2 l
(Unit: mm)
36
2
36
Ferrous metal
2 (*)
18
M12
Non- ferrous metal
1 (*)
1
(Unit: mm)
Model
E2A3
Shielded
D n l m d
Dimension
Material of surrounding metal
Ferrous metal
4 (*)
33
54
4
54
M18
Nonferrous metal
2.5 (*)
2.5
60
90
6
90
Ferrous metal
6 (*)
M30
Nonferrous metal
4 (*)
4
* Using the nuts provided with the E2A3 allows mounting in the way shown below.
Nut provided with E2A3
Wiring
Be sure to wire the E2A3 and load correctly, otherwise it may be damaged.
Connection with No Load
Be sure to insert a load when wiring. Make sure to connect a proper load to the E2A3 during operation, otherwise it may damage internal elements.
Do not expose the product to flammable or explosive gases.
Do not disassemble, repair, or modify the product.
Power OFF
The Proximity Sensor may output a pulse signal when it is turned
OFF. Therefore, it is recommended that the load be turned OFF before turning OFF the Proximity Sensor.
Power Supply Transformer
When using a DC power supply, make sure that the DC power supply has an insulated transformer. Do not use a DC power supply with an auto-transformer.
Mutual Interference
When installing two or more Sensors face-to-face or side-by-side, ensure that the minimum distances given in the following table are maintained.
A
B
A
Type
Shielded
Dimension
A
B
25
20
M8
35
M12
25
70
M18
45
(Unit: mm)
M30
110
70 l
= 0 mm
E2A3
D-43
Wiring
High-tension Lines
Wiring through Metal Conduit:
If there is a power or high-tension line near the cable of the Proximity
Sensor, wire the cable through an independent metal conduit to prevent against Proximity Sensor damage or malfunctioning.
Cable Extension
The standard cable length is less than 200 m.
The tractive force is 50 N.
Mounting
The Proximity Sensor must not be subjected to excessive shock with a hammer when it is installed, otherwise the Proximity Sensor may be damaged or lose its water-resistance.
Do not tighten the nut with excessive force. A washer must be used with the nut.
Maintenance and Inspection
Periodically perform the following checks to ensure stable operation of the Proximity Sensor over a long period of time.
1. Check for mounting position, dislocation, looseness, or distortion of the Proximity Sensor and sensing objects.
2. Check for loose wiring and connections, improper contacts, and line breakage.
3. Check for attachment or accumulation of metal powder or dust.
4. Check for abnormal temperature conditions and other environmental conditions.
5. Check for proper lighting of indicators (for models with a set indicator).
Never attempt to disassemble or repair the Sensor.
Environment
Water Resistivity
The Proximity Sensors are tested intensively on water resistance, but to ensure maximum performance and life expectancy, avoid immersion in water and provide protection from rain or snow.
Operating Environment
Store and operate the Proximity Sensor only within the given specifications.
Inrush Current
A load that has a large inrush current (e.g., a lamp or motor) will damage the Proximity Sensor. Connect the load to the Proximity
Sensor through a relay.
Type Torque
M8 Stainless Steel Model 9 N·m
M12
Brass Model ---
20 N·m
M18
M30
60 N·m
150 N·m
<SUITABILITY FOR USE>
OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the combination of the products in the customer’s application or use of the products.
Take all necessary steps to determine the suitability of the product for the systems, machines, and equipment with which it will be used.
<CHANGE IN SPECIFICATIONS>
Product specifications and accessories may be changed at any time based on improvements and other reasons. Consult with your OMRON representative at any time to confirm actual specifications of purchased product.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
Cat. No. D102-E2-01A-X
In the interest of product improvement, specifications are subject to change without notice.
D-44 Inductive Sensors
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