E2A Cylindrical Proximity Sensor 1
Cylindrical Proximity Sensor
E2A
Safe Mounting with Greater
Sensing Distance
• Ensures a sensing distance approximately 1.5 to 2
times larger than that of any conventional OMRON
Sensor.
• Problems such as the collision of workpieces are
eliminated.
• Full range of standard sizes (M8, M12, M18 and
M30; both long and short barrels)
• Modular construction simplifies customization.
<READ AND UNDERSTAND THIS CATALOG>
Please read and understand this catalog before purchasing
the products. Please consult your OMRON representative if
you have any questions or comments.
Ordering Information
Size Sensing
distance
Connection Body
material
Thread length
(overall length)
Output
configuration
Operation mode NO Operation mode NC
M8 Shielded 2.0 mm Pre-wired Stainless
steel
27 (40) PNP E2A-S08KS02-WP-B1 2M E2A-S08KS02-WP-B2 2M
NPN E2A-S08KS02-WP-C1 2M E2A-S08KS02-WP-C2 2M
49 (62) PNP E2A-S08LS02-WP-B1 2M E2A-S08LS02-WP-B2 2M
NPN E2A-S08LS02-WP-C1 2M E2A-S08LS02-WP-C2 2M
M12 connector Stainless
steel
27 (43) PNP E2A-S08KS02-M1-B1 E2A-S08KS02-M1-B2
NPN E2A-S08KS02-M1-C1 E2A-S08KS02-M1-C2
49 (65) PNP E2A-S08LS02-M1-B1 E2A-S08LS02-M1-B2
NPN E2A-S08LS02-M1-C1 E2A-S08LS02-M1-C2
Brass 27 (43) PNP E2A-M08KS02-M1-B1 E2A-M08KS02-M1-B2
NPN E2A-M08KS02-M1-C1 E2A-M08KS02-M1-C2
49 (65) PNP E2A-M08LS02-M1-B1 E2A-M08LS02-M1-B2
NPN E2A-M08LS02-M1-C1 E2A-M08LS02-M1-C2
M8 connector (3-
pin)
Stainless
steel
27 (39) PNP E2A-S08KS02-M5-B1 E2A-S08KS02-M5-B2
NPN E2A-S08KS02-M5-C1 E2A-S08KS02-M5-C2
49 (61) PNP E2A-S08LS02-M5-B1 E2A-S08LS02-M5-B2
NPN E2A-S08LS02-M5-C1 E2A-S08LS02-M5-C2
Non-shielded 4.0 mm Pre-wired Stainless
steel
27 (40) PNP E2A-S08KN04-WP-B1 2M E2A-S08KN04-WP-B2 2M
NPN E2A-S08KN04-WP-C1 2M E2A-S08KN04-WP-C2 2M
49 (62) PNP E2A-S08LN04-WP-B1 2M E2A-S08LN04-WP-B2 2M
NPN E2A-S08LN04-WP-C1 2M E2A-S08LN04-WP-C2 2M
M12 connector Stainless
steel
27 (43) PNP E2A-S08KN04-M1-B1 E2A-S08KN04-M1-B2
NPN E2A-S08KN04-M1-C1 E2A-S08KN04-M1-C2
49 (65) PNP E2A-S08LN04-M1-B1 E2A-S08LN04-M1-B2
NPN E2A-S08LN04-M1-C1 E2A-S08LN04-M1-C2
Brass 27 (43) PNP E2A-M08KN04-M1-B1 E2A-M08KN04-M1-B2
NPN E2A-M08KN04-M1-C1 E2A-M08KN04-M1-C2
49 (65) PNP E2A-M08LN04-M1-B1 E2A-M08LN04-M1-B2
NPN E2A-M08LN04-M1-C1 E2A-M08LN04-M1-C2
M8 connector (3-
pin)
Stainless
steel
27 (39) PNP E2A-S08KN04-M5-B1 E2A-S08KN04-M5-B2
NPN E2A-S08KN04-M5-C1 E2A-S08KN04-M5-C2
49 (61) PNP E2A-S08LN04-M5-B1 E2A-S08LN04-M5-B2
NPN E2A-S08LN04-M5-C1 E2A-S08LN04-M5-C2
2E2A Cylindrical Proximity Sensor
Note: M30 non-shielded Models with double sensing distance and short barrels cannot be mounted due to the necessary separation distance from
the surrounding metal. Standard sensing models are thus available.
M12 Shielded 4.0 mm Pre-wired Brass 34 (50) PNP E2A-M12KS04-WP-B1 2M E2A-M12KS04-WP-B2 2M
NPN E2A-M12KS04-WP-C1 2M E2A-M12KS04-WP-C2 2M
56 (72) PNP E2A-M12LS04-WP-B1 2M E2A-M12LS04-WP-B2 2M
NPN E2A-M12LS04-WP-C1 2M E2A-M12LS04-WP-C2 2M
M12 connector Brass 34 (48) PNP E2A-M12KS04-M1-B1 E2A-M12KS04-M1-B2
NPN E2A-M12KS04-M1-C1 E2A-M12KS04-M1-C2
56 (70) PNP E2A-M12LS04-M1-B1 E2A-M12LS04-M1-B2
NPN E2A-M12LS04-M1-C1 E2A-M12LS04-M1-C2
Non-shielded 8.0 mm Pre-wired Brass 34 (50) PNP E2A-M12KN08-WP-B1 2M E2A-M12KN08-WP-B2 2M
NPN E2A-M12KN08-WP-C1 2M E2A-M12KN08-WP-C2 2M
56 (72) PNP E2A-M12LN08-WP-B1 2M E2A-M12LN08-WP-B2 2M
NPN E2A-M12LN08-WP-C1 2M E2A-M12LN08-WP-C2 2M
M12 connector Brass 34 (48) PNP E2A-M12KN08-M1-B1 E2A-M12KN08-M1-B2
NPN E2A-M12KN08-M1-C1 E2A-M12KN08-M1-C2
56 (70) PNP E2A-M12LN08-M1-B1 E2A-M12LN08-M1-B2
NPN E2A-M12LN08-M1-C1 E2A-M12LN08-M1-C2
M18 Shielded 8.0 mm Pre-wired Brass 39 (59) PNP E2A-M18KS08-WP-B1 2M E2A-M18KS08-WP-B2 2M
NPN E2A-M18KS08-WP-C1 2M E2A-M18KS08-WP-C2 2M
61 (81) PNP E2A-M18LS08-WP-B1 2M E2A-M18LS08-WP-B2 2M
NPN E2A-M18LS08-WP-C1 2M E2A-M18LS08-WP-C2 2M
M12 connector Brass 39 (53) PNP E2A-M18KS08-M1-B1 E2A-M18KS08-M1-B2
NPN E2A-M18KS08-M1-C1 E2A-M18KS08-M1-C2
61 (75) PNP E2A-M18LS08-M1-B1 E2A-M18LS08-M1-B2
NPN E2A-M18LS08-M1-C1 E2A-M18LS08-M1-C2
Non-shielded 16.0 mm Pre-wired Brass 39 (59) PNP E2A-M18KN16-WP-B1 2M E2A-M18KN16-WP-B2 2M
NPN E2A-M18KN16-WP-C1 2M E2A-M18KN16-WP-C2 2M
61 (81) PNP E2A-M18LN16-WP-B1 2M E2A-M18LN16-WP-B2 2M
NPN E2A-M18LN16-WP-C1 2M E2A-M18LN16-WP-C2 2M
M12 connector Brass 39 (53) PNP E2A-M18KN16-M1-B1 E2A-M18KN16-M1-B2
NPN E2A-M18KN16-M1-C1 E2A-M18KN16-M1-C2
61 (75) PNP E2A-M18LN16-M1-B1 E2A-M18LN16-M1-B2
NPN E2A-M18LN16-M1-C1 E2A-M18LN16-M1-C2
M30 Shielded 15.0 mm Pre-wired Brass 44 (64) PNP E2A-M30KS15-WP-B1 2M E2A-M30KS15-WP-B2 2M
NPN E2A-M30KS15-WP-C1 2M E2A-M30KS15-WP-C2 2M
66 (86) PNP E2A-M30LS15-WP-B1 2M E2A-M30LS15-WP-B2 2M
NPN E2A-M30LS15-WP-C1 2M E2A-M30LS15-WP-C2 2M
M12 connector Brass 44 (58) PNP E2A-M30KS15-M1-B1 E2A-M30KS15-M1-B2
NPN E2A-M30KS15-M1-C1 E2A-M30KS15-M1-C2
66 (80) PNP E2A-M30LS15-M1-B1 E2A-M30LS15-M1-B2
NPN E2A-M30LS15-M1-C1 E2A-M30LS15-M1-C2
Non-shielded 20.0 mm Pre-wired Brass 44 (64)
(See note.)
PNP E2A-M30KN20-WP-B1 2M E2A-M30KN20-WP-B2 2M
NPN E2A-M30KN20-WP-C1 2M E2A-M30KN20-WP-C2 2M
30.0 mm 66 (86) PNP E2A-M30LN30-WP-B1 2M E2A-M30LN30-WP-B2 2M
NPN E2A-M30LN30-WP-C1 2M E2A-M30LN30-WP-C2 2M
20.0 mm M12 connector Brass 44 (58)
(See note.)
PNP E2A-M30KN20-M1-B1 E2A-M30KN20-M1-B2
NPN E2A-M30KN20-M1-C1 E2A-M30KN20-M1-C2
30.0 mm 66 (80) PNP E2A-M30LN30-M1-B1 E2A-M30LN30-M1-B2
NPN E2A-M30LN30-M1-C1 E2A-M30LN30-M1-C2
Size Sensing
distance
Connection Body
material
Thread length
(overall length)
Output
configuration
Operation mode NO Operation mode NC
E2A Cylindrical Proximity Sensor 3
â– Model Number Legend
Example: E2A-M12LS04-M1-B1 Standard, M12, long barrel, shielded, Sn=4 mm, M12 connector, PNP-NO
E2A-M08KN04-WP-B1 5M Standard, M8, short barrel, non-shielded, Sn=4 mm, pre-wired PVC cable, PNP-NO, cable length=5 m
1. Basic name
E2A
2. Sensing technology
Blank: Standard double distance
3. Housing shape and material
M: Cylindrical, metric threaded, brass
S: Cylindrical, metric threaded, stainless steel
4. Housing size
08: 8 mm
12: 12 mm
18: 18 mm
30: 30 mm
5. Barrel length
K: Standard length
L: Long body
6. Shield
S: Shielded
N: Non-shielded
7. Sensing distance
Numeral: Sensing distance: e.g. 02=2 mm, 16=16 mm
8. Kind of connection
WP: Pre-wired, PVC
M1: M12 connector (4-pole)
M3: M8 connector (4-pole)
M5: M8 connector (3-pole)
9. Power source and output
B: DC, 3-wire, PNP open collector
C: DC, 3-wire, NPN open collector
D: DC, 2-wire
E: DC, 3-wire, NPN voltage output
F: DC, 3-wire, PNP voltage output
10.Operation mode
1: Normally open (NO)
2: Normally closed (NC)
11.Specials (e.g., cable material, oscillating frequency)
12.Cable length
Blank: Connector type
Numeral: Cable type
2 3 4 5 6 7 8 9 10 111 12
E2A@-@@@@@-@-@@-@@
4E2A Cylindrical Proximity Sensor
Specifications
â– DC 3-wire Models
Note 1. The response frequency is an average value. Measurement conditions are as follows: standard target, a distance of twice the standard
target distance between targets, and a setting distance of half the sensing distance.
2. When using any model at an ambient temperature between −40°C and −25°C and a power voltage between 30 and 32 VDC, use a load
current of 100 mA max.,
3. For USA and CANADA : use class 2 circuit only.
Size M8 M12
Type Shielded Non-shielded Shielded Non-shielded
Item
E2A-M08@S02-M1-B1
E2A-M08@S02-M1-B2
E2A-M08@S02-M1-C1
E2A-M08@S02-M1-C2
E2A-S08@S02-@@-B1
E2A-S08@S02-@@-B2
E2A-S08@S02-@@-C1
E2A-S08@S02-@@-C2
E2A-M08@N04-M1-B1
E2A-M08@N04-M1-B2
E2A-M08@N04-M1-C1
E2A-M08@N04-M1-C2
E2A-S08@N04-@@-B1
E2A-S08@N04-@@-B2
E2A-S08@N04-@@-C1
E2A-S08@N04-@@-C2
E2A-M12@S04-@@-B1
E2A-M12@S04-@@-B2
E2A-M12@S04-@@-C1
E2A-M12@S04-@@-C2
E2A-M12@N08-@@-B1
E2A-M12@N08-@@-B2
E2A-M12@N08-@@-C1
E2A-M12@N08-@@-C2
Sensing distance 2 mm ± 10% 4 mm ± 10% 4 mm ± 10% 8 mm ± 10%
Setting distance 0 to 1.6 mm 0 to 3.2 mm 0 to 3.2 mm 0 to 6.4 mm
Differential travel 10% max. of sensing distance
Target Ferrous metal (The sensing distance decreases with non-ferrous metal.)
Standard target (mild steel ST37) 8×8×1 mm 12×12×1 mm 12×12×1 mm 24×24×1 mm
Response frequency (See note 1.) 1,500 Hz 1,000 Hz 1,000 Hz 800 Hz
Power supply voltage
(operating voltage range)
12 to 24 VDC. Ripple (p-p): 10% max.
(10 to 32 VDC)
Current consumption (DC 3-wire) 10 mA max.
Output type -B models: PNP open collector
-C models: NPN open collector
Control
output
Load current
(See note 2.)
200 mA max. (32 VDC max.)
Residual voltage 2 V max. (under load current of 200 mA with cable length of 2 m)
Indicator Operation indicator (Yellow LED)
Operation mode
(with sensing object approaching)
-B1/-C1 models: NO
-B2/-C2 models: NC
For details, refer to the timing charts.
Protection circuit Power source circuit reverse polarity protection,
Surge suppressor, Short-circuit protection
Output reverse polarity protection, Power source
circuit reverse polarity protection, Surge suppres-
sor, Short-circuit protection
Ambient air temperature Operating: −40°C to 70°C, Storage: −40°C to 85°C (with no icing or condensation)
Temperature influence (See note 2.) ±10% max. of sensing distance at 23°C within temperature range of −25°C to 70°C
±15% max. of sensing distance at 23°C within temperature range of −40°C to 70°C
Ambient humidity Operating: 35% to 95%, Storage: 35% to 95%
Voltage influence ±1% max. of sensing distance in rated voltage range ±15%
Insulation resistance 50 MΩ min. (at 500 VDC) between current carry parts and case
Dielectric strength 1,000 VAC at 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 directions
Shock resistance 500 m/s2, 10 times each in X, Y and Z directions 1,000 m/s2, 10 times each in X, Y and Z directions
Standard and listings (See note 3.) IEC60529: IP67, Degree of protection
EN60947-5-2: EMC
Connection method -WP models: Pre-wired models (Standard length: 2 m)
-M1 models: M12 4-pin connector models
-M5 models: M8 3-pin connector models
Weight
(packaged)
Pre-wired model Approx. 65 g Approx. 85 g
M12 connector model M12 connector models: Approx. 20 g
M8 connector models: Approx. 15 g
Approx. 35 g
Material Case Stainless steel or brass-nickel plated Brass-nickel plated
Sensing surface PBT
Cable PVC
Clamping nut Brass-nickel plated
E2A Cylindrical Proximity Sensor 5
â– DC 3-wire Models
Note 1. The response frequency is an average value. Measurement conditions are as follows: standard target, a distance of twice the standard
target distance between targets, and a setting distance of half the sensing distance.
2. When using any model at an ambient temperature between -40°C and -25°C and a power voltage between 30 and 32 VDC, use a load
current of 100 mA max.
3. For USA and CANADA : use class 2 circuit only.
Size M18 M30
Type Shielded Non-shielded Shielded Non-shielded Non-shielded
Item
E2A-M18@S08-@@-B1
E2A-M18@S08-@@-B2
E2A-M18@S08-@@-C1
E2A-M18@S08-@@-C2
E2A-M18@N16-@@-B1
E2A-M18@N16-@@-B2
E2A-M18@N16-@@-C1
E2A-M18@N16-@@-C2
E2A-M30@S15-@@-B1
E2A-M30@S15-@@-B2
E2A-M30@S15-@@-C1
E2A-M30@S15-@@-C2
E2A-M30KN20-@@-B1
E2A-M30KN20-@@-B2
E2A-M30KN20-@@-C1
E2A-M30KN20-@@-C2
E2A-M30LN30-@@-B1
E2A-M30LN30-@@-B2
E2A-M30LN30-@@-C1
E2A-M30LN30-@@-C2
Sensing distance 8 mm±10% 16 mm±10% 15 mm±10% 20 mm±10% 30 mm±10%
Setting distance 0 to 6.4 mm 0 to 12.8 mm 0 to 12 mm 0 to 16 mm 0 to 24 mm
Differential travel 10% max. of sensing distance
Target Ferrous metal (The sensing distance decreases with non-ferrous metal.)
Standard target
(mild steel ST37)
24×24×1 mm 48×48×1 mm 45×45×1 mm 60×60×1 mm 90×90×1 mm
Response frequency
(See note 1.)
500 Hz 400 Hz 250 Hz 100 Hz 100 Hz
Power supply voltage
(operating voltage range)
12 to 24 VDC. Ripple (p-p): 10% max.
(10 to 32 VDC)
Current consumption (DC
3-wire)
10 mA max.
Output type -B models: PNP open collector
-C models: NPN open collector
Control
output
Load current (See
note 2.)
200 mA max. (32 VDC max.)
Residual voltage 2 V max. (under load current of 200 mA with cable length of 2 m)
Indicator Operation indicator (Yellow LED)
Operation mode
(with sensing object ap-
proaching)
-B1/-C1 models: NO
-B2/-C2 models: NC
For details, refer to the timing charts.
Protection circuit Output reverse polarity protection, Power source circuit reverse polarity protection, Surge suppressor, Short-circuit
protection
Ambient air temperature Operating: −40°C to 70°C, Storage: −40°C to 85°C (with no icing or condensation)
Temperature influence (See
note 2.)
±10% max. of sensing distance at 23°C within temperature range of −25°C to 70°C
±15% max. of sensing distance at 23°C within temperature range of −40°C to 70°C
Ambient humidity Operating: 35% to 95%, Storage: 35% to 95%
Voltage influence ±1% max. of sensing distance in rated voltage range ±15%
Insulation resistance 50 MΩ min. (at 500 VDC) between current carry parts and case
Dielectric strength 1,000 VAC at 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 directions
Shock resistance 1,000 m/s2, 10 times each in X, Y and Z directions
Standard and listings
(See note 3.)
IEC60529: IP67, Degree of protection
EN60947-5-2: EMC
Connection method -WP models: Pre-wired models (Standard length: 2 m)
-M1 models: M12 4-pin connector models
-M5 models: M8 3-pin connector models
Weight
(pack-
aged)
Pre-wired model Approx. 160 g Approx. 280 g Approx. 280 g Approx. 370 g
M12 connector
model
Approx. 70 g Approx. 200 g Approx. 200 g Approx. 260 g
Material Case Brass-nickel plated
Sensing surface PBT
Cable PVC
Clamping nut Brass-nickel plated
6E2A Cylindrical Proximity Sensor
Engineering Data
Operating Range (Typical)
Influence of Sensing Object Size and Materials
Shielded Models
Distance Y (mm)
X
Y
18
16
14
12
10
8
6
4
2
0
−30 −20 −10 0 10 20 30
E2A-M30@S15
Sensing distance X (mm)
E2A-M18@S08
E2A-M12@S04
E2A-S08@S02/
E2A-M08@S02
Shielded Models
X
Y
35
30
25
20
15
10
5
0
−50 −40 −30 −20 −10 0 10 20 30 40 50
Non-shielded Models
Distance Y (mm)
Sensing distance X (mm)
E2A-M30LN30
E2A-M18@N16
E2A-M12@N08
E2A-S08
@
N04/
E2A-M08
@
N04
E2A-M30KN20
0 5 10 15 20 25
Side length of sensing object d (mm)
Iron
@d
t = 1 mm
X
0.5
1.0
1.5
2.0
2.5 5.0
4.0
3.0
2.0
1.0
0
@d
t = 1 mm
X
5101520253035 0
1.0
2.0
3.0
4.0
5.0
7.0
8.0
6.0
10 20 30 40 50 60
@d
t = 1 mm
X
0
4
8
12
16
20
10 20 30 40 50 60 70 80
@d
t = 1 mm
X
Sensing distance X (mm)
Stainless steel (SUS303)
Aluminum
Side length of sensing object d (mm)
Brass
Iron
Sensing distance X (mm)
Stainless steel
(SUS303)
Aluminum
Copper
Side length of sensing object d (mm)
Brass
Iron
Sensing distance X (mm)
Copper
Stainless steel (SUS303)
Aluminum
E2A-S08@S02/M08@S02 E2A-M12@S04 E2A-M18@S08
E2A-M30@S15
Side length of sensing object d (mm)
Sensing distance X (mm)
Iron
Stainless steel (SUS303)
Brass
Copper
Brass
Copper
Aluminum
E2A Cylindrical Proximity Sensor 7
Non-shielded Models
5.0
4.0
3.0
2.0
1.0
0 10 20 30 40 50
@d
t = 1 mm
X
10
8
6
4
2
0
@d
t = 1 mm
X
10 20 30 40 50
20
16
12
8
4
0
@d
t = 1 mm
X
20 40 60 80
0
5
10
15
20
25
35
30
20 40 60 80 100
@d
t = 1 mm
X
E2A-S08@N04/M08@N04
Side length of sensing object d (mm)
Sensing distance X (mm)
Iron
Brass
Copper
Stainless steel (SUS303)
E2A-M12@N08
Side length of sensing object d (mm)
Sensing distance X (mm)
Iron
Brass
Aluminum
Stainless steel (SUS303)
Copper
E2A-M18@N16
Side length of sensing object d (mm)
Sensing distance X (mm)
Iron
Copper
Brass
Aluminum
E2A-M30LN30
Side length of sensing object d (mm)
Sensing distance X (mm)
Iron
Copper
Brass
Aluminum
Stainless steel (SUS303)
Stainless steel (SUS303)
Aluminum
Side length of sensing object d (mm)
Sensing distance X (mm)
25
20
15
10
5
0 20 40 60 80 100
t = 1 mm
@d
X
Copper
Brass
Iron
Aluminum
Stainless steel (SUS303)
E2A-M30KN20
8E2A Cylindrical Proximity Sensor
Operation
â– PNP Output
Operation mode Model Timing chart Output circuit
NO E2A-@-@-B1
NC E2A-@-@-B2
Sensing
object
(%) 100 0
Rated
sensing
distance
Sensing zoneNon-sensing zone
Proximity
Sensor
ON
OFF
ON
OFF
Yellow indicator
Control output
3
1
243
1
4
Load
Brown
Black
(See note 1.)
Blue
+V
0 V
Note 1: With M8 connector models, there is no output
reverse polarity protection diode.
M12 Connector
Pin Arrangement
(See note 2.)
M8 Connector
Pin Arrangement
Note 2: Terminal 2 of the M12 connector is not used.
Proximity
Sensor
main
circuits
(%) 100 0
Sensing
object
Rated
sensing
distance
Sensing zoneNon-sensing zone
Proximity
Sensor
ON
OFF
ON
OFF
Yellow indicator
Control output
3
1
243
1
4
Load
Brown
Black
(See note 1.)
Blue
+V
0 V
Note 1: With M8 connector models, there is no output
reverse polarity protection diode.
M12 Connector
Pin Arrangement
(See note 2.)
M8 Connector
Pin Arrangement
Note 2: Terminal 4 of the M12 connector is not used.
Proximity
Sensor
main
circuits
(M8 connector: )
E2A Cylindrical Proximity Sensor 9
â– NPN Output
Operation mode Model Timing chart Output circuit
NO E2A-@-@-C1
NC E2A-@-@-C2
Sensing
object
(%) 100 0
Rated
sensing
distance
Sensing zoneNon-sensing zone
Proximity
Sensor
ON
OFF
ON
OFF
Yellow indicator
Control output
Load
Brown
Black
(See note 1.)
Blue
+V
0 V
Note 1: With M8 connector models, there is no output
reverse polarity protection diode.
M12 Connector
Pin Arrangement
(See note 2.)
3
1
24
M8 Connector
Pin Arrangement
3
1
4
Note 2: Terminal 2 of the M12 connector is not used.
Proximity
Sensor
main
circuits
(%) 100 0
Sensing
object
Rated
sensing
distance
Sensing zoneNon-sensing zone
Proximity
Sensor
ON
OFF
ON
OFF
Yellow indicator
Control output
3
1
243
1
4
Load
Brown
Black
(See note 1.)
Blue
+V
0 V
Note 1: With M8 connector models, there is no output
reverse polarity protection diode.
M12 Connector
Pin Arrangement
(See note 2.)
M8 Connector
Pin Arrangement
Note 2: Terminal 4 of the M12 connector is not used.
Proximity
Sensor
main
circuits
(M8 connector: )
10 E2A Cylindrical Proximity Sensor
Dimensions
Note:All units are in millimeters unless otherwise indicated.
Pre-wired Models (Shielded) Pre-wired Models (Non-shielded)
3 5
27
40
13
M8×1
(See note 1.)
E2A-S08KS02-WP-@@
3
40
5
27
13 6
M8×1
6 dia.
E2A-S08KN04-WP-@@
4
50.3
7
34
17
M12×1
Two, clamping nuts
E2A-M12KS04-WP-@@ E2A-M12KN08-WP-@@
47
34
50.3
17 7
9.4 dia.
M12×1
M18×1
410
39
59.5
24
E2A-M18KS08-WP-@@ E2A-M18KN16-WP-@@
10
39
59.5
24 10 4
15.3 dia.
M18×1
E2A-M30KS15-WP-@@
510
64.5
44
36
M30×1.5
Note 1. 4-dia. vinyl-insulated round cable with 3 conductors (conductor cross section:
0.3 mm2; insulator diameter: 1.3 mm); standard length: 2 m
2. Operation indicator (yellow)
Indicator (See note 2.)
(See note 1.)
(See note 1.)
(See note 1.)
(See note 1.)
(See note 1.)
(See note 1.)
Two, clamping nuts
Indicator (See note 2.)
Note 1. 4-dia. vinyl-insulated round cable with 3 conductors (conductor cross section:
0.3 mm2; insulator diameter: 1.3 mm); standard length: 2 m
2. Operation indicator (yellow)
Two, clamping nuts
Indicator (See note 2.)
Note 1. 4-dia. vinyl-insulated round cable with 3 conductors (conductor cross section:
0.3 mm2; insulator diameter: 1.3 mm); standard length: 2 m
2. Operation indicator (yellow)
Two, clamping nuts
Indicator (See note 2.)
Note 1. 4-dia. vinyl-insulated round cable with 3 conductors (conductor cross section:
0.3 mm2; insulator diameter: 1.3 mm); standard length: 2 m
2. Operation indicator (yellow)
Two, clamping nuts
Indicator (See note 2.)
Note 1. 4-dia. vinyl-insulated round cable with 3 conductors (conductor cross section:
0.3 mm2; insulator diameter: 1.3 mm); standard length: 2 m
2. Operation indicator (yellow)
Two, clamping nuts
Note 1. 4-dia. vinyl-insulated round cable with 3 conductors (conductor cross section:
0.3 mm2; insulator diameter: 1.3 mm); standard length: 2 m
2. Operation indicator (yellow)
Indicator (See note 2.)
Two, clamping nuts
Note 1. 4-dia. vinyl-insulated round cable with 3 conductors (conductor cross section:
0.3 mm2; insulator diameter: 1.3 mm); standard length: 2 m
2. Operation indicator (yellow)
Indicator (See note 2.)
M30×1.5
(See note 1.)
Two, clamping nuts
Note 1. 4-dia. vinyl-insulated round cable with 3 conductors (conductor cross section:
0.3 mm2; insulator diameter: 1.3 mm); standard length: 2 m
2. Operation indicator (yellow)
Indicator (See note 2.)
26.6 dia.
36 5
44
15 10
64.5
E2A-M30KN20-WP-@@
E2A Cylindrical Proximity Sensor 11
M12×1
17
72.3
56
7
4
M12×1
17
72.3
56
747
9.4 dia.
M18×1
24
81.5
61 10
4
10
61
81.5
24 10 4
15.3 dia.
M18×1
510
86.5
66
36
M30×1.5
M30×1.5
26.6 dia.
10
5
66
86.5
15
36
(See note 1.) (See note 1.)
(See note 1.)
(See note 1.)
(See note 1.)
(See note 1.)
E2A-M12LS04-WP-@@
E2A-M18LS08-WP-@@
E2A-M12LN08-WP-@@
E2A-M18LN16-WP-@@
E2A-M30LN30-WP-@@
E2A-M30LS15-WP-@@
Two, clamping nuts
Indicator (See note 2.)
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)
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)
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)
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)
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)
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)
Two, clamping nuts
Indicator (See note 2.)
Two, clamping nuts
Indicator (See note 2.)
Two, clamping nuts
Indicator (See note 2.)
Two, clamping nuts
Indicator (See note 2.)
Two, clamping nuts
Indicator (See note 2.)
Mounting Hole Cutout Dimensions
F
External diameter
of Proximity Sensor Dimension F (mm)
M18
M30
M8
M12
8.5 dia.+0.5
0
12.5 dia.+0.5
0
18.5 dia.+0.5
0
30.5 dia.+0.5
0
3 5
49
62
13
M8×1
(See note 1.)
E2A-S08LS02-WP-@@
3
62
5
49
13 6
M8×1
6 dia.
E2A-S08LN04-WP-@@
(See note 1.)
Two, clamping nuts
Indicator (See note 2.)
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)
Two, clamping nuts
Indicator (See note 2.)
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)
12 E2A Cylindrical Proximity Sensor
M12 Connector Models (Shielded) M12 Connector Models (Non-shielded)
E2A-S08KS02-M1-@@
E2A-M08KS02-M1-@@
E2A-M12KS04-M1-@@ E2A-M12KN08-M1-@@
27
43
35
13
M8×1
M12×1
Note: Operation indicator (yellow LED, 4×90°)
E2A-S08KN04-M1-@@
E2A-M08KN04-M1-@@
6 dia.
35
27
43
6
13
M8×1
M12×1
E2A-M18KS08-M1-@@ E2A-M18KN16-M1-@@
7
4
34
48
17
M12×1
M12×1
9.4 dia.
4
34
48
77
17
M12×1
M12×1
10
24 4
39
53
M18×1
M12×1
24 10
4
39
53
10
15.3 dia.
M18×1
M12×1
E2A-M30KS15-M1-@@
44
5
58
36 10
M30×1.5
M12×1
Note: Operation indicator (yellow LED, 4×90°)
Note: Operation indicator (yellow LED, 4×90°)
Note: Operation indicator (yellow LED, 4×90°)
Note: Operation indicator (yellow LED, 4×90°)
Note: Operation indicator (yellow LED, 4×90°)
Note: Operation indicator (yellow LED, 4×90°)
Two, clamping nuts
Indicator (See note.)
Two, clamping nuts
Indicator (See note.)
Two, clamping nuts
Indicator (See note.)
Two, clamping nuts
Indicator (See note.)
Two, clamping nuts
Indicator (See note.)
Two, clamping nuts
Indicator (See note.)
Two, clamping nuts
Indicator (See note.)
26.6 dia.
M12×1
Note: Operation indicator (yellow LED, 4×90°)
515
36
44
10
58
M30×1.5
Indicator (See note.)
Two, clamping nuts
E2A-M30KN20-M1-@@
E2A Cylindrical Proximity Sensor 13
M8 Connector Models (Shielded) M8 Connector Models (Non-shielded)
7
4
56
70
17
M12×1
M12×1
9.4 dia.
4
56
70
7
7
17
M12×1
M12×1
10
24 4
61
75
M18×1
M12×1
24 10
4
61
75
10
15.3 dia.
M18×1
M12×1
66
5
80
36 10
M30×1.5
M12×1
10
5
15
66
80
36
26.6 dia.
M30×1.5
Note: Operation indicator (yellow LED, 4×90°)
Note: Operation indicator (yellow LED, 4×90°)
Note: Operation indicator (yellow LED, 4×90°)
Note: Operation indicator (yellow LED, 4×90°)
Note: Operation indicator (yellow LED, 4×90°)
Note: Operation indicator (yellow LED, 4×90°)
E2A-M12LS04-M1-@@
E2A-M18LS08-M1-@@
E2A-M30LS15-M1-@@
E2A-M12LN08-M1-@@
E2A-M18LN16-M1-@@
E2A-M30LN30-M1-@@
Two, clamping nuts
Indicator (See note.)
Two, clamping nuts
Indicator (See note.)
Two, clamping nuts
Indicator (See note.)
Two, clamping nuts
Indicator (See note.)
Two, clamping nuts
Indicator (See note.)
Two, clamping nuts
Indicator (See note.)
E2A-S08LS02-M1-@@
E2A-M08LS02-M1-@@
49
65
35
13
M8×1
M12×1
Note: Operation indicator (yellow LED, 4×90°)
E2A-S08LN04-M1-@@
E2A-M08LN04-M1-@@
6 dia.
35
49
65
6
13
M8×1
M12×1
Note: Operation indicator (yellow LED, 4×90°)
Two, clamping nuts
Indicator (See note.) Indicator (See note.)
M8×1
M8×1
E2A-S08KS02-M5-@@ E2A-S08KN04-M5-@@
6 dia.
3
6
13 5
27
39
M8×1
M8×1
Note: Operation indicator (yellow LED, 4×90°)Note: Operation indicator (yellow LED, 4×90°)
3
13
27
5
39
Two, clamping nuts Two, clamping nuts
M8×1
M8×1
E2A-S08LS02-M5-@@ E2A-S08LN04-M5-@@
6 dia.
3
6
13 5
49
61
M8×1
M8×1
Note: Operation indicator (yellow LED, 4×90°)Note: Operation indicator (yellow LED, 4×90°)
3
13
49
5
61
14 E2A Cylindrical Proximity Sensor
Precautions
â– Safety Precautions
Power Supply
Do not impose an excessive voltage on the E2A, 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 E2A may be damaged.
The E2A’s short-circuit protection function will be valid if the polarity
of the supply voltage imposed is correct and within the rated voltage
range.
Wiring
Be sure to wire the E2A and load correctly, otherwise it may be dam-
aged.
Connection with No Load
Be sure to insert loads when wiring. Make sure to connect a proper
load to the E2A in operation, otherwise it may damage internal ele-
ments.
Do not expose the product to flammable or explo-
sive gases.
Do not disassemble, repair, or modify the product.
â– Correct Use
Designing
Power Reset Time
The Proximity Sensor is ready to operate within 100 ms after power
is supplied. If power supplies are connected to the Proximity Sensor
and load respectively, be sure to supply power to the Proximity Sen-
sor before supplying power to the load.
Effects of Surrounding Metal
When mounting the E2A within a metal panel, ensure that the clear-
ances given in the following table are maintained.
(Unit: mm)
Note 1. In the case of using the supplied nuts.
If true flash mounting is necessary, apply a free zone of
1.5 mm.
2. In the case of using the supplied nuts.
If true flush mounting is necessary, apply a free zone of
4 mm.
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 sup-
ply 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.
(Unit: mm)
Type Dimension M8 M12 M18 M30
Short
barrel
Long
barrel
Shielded l000
(See note
1.)
0
(See note 2.)
m 4.5 12 24 45
d --- --- 27 45
D 001.5 4
n 121827 45
Non-
shielded
l12 15 22 30 40
m 8 20 48 70 90
d 244070 90 120
D 121522 30 40
n 244070 90 120
l
m
n
m
D
d dia.
l
Type Dimension M8 M12 M18 M30
Short
barrel
Long
barrel
Shielded A 20 30 60 110
B 15203570
Non-
shielded
A 80 120 200 300 300
B 60 100 120 200 300
E2A Cylindrical Proximity Sensor 15
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 pre-
vent against Proximity Sensor damage or malfunctioning.
Cable Extension
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-resistivity.
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 environ-
mental conditions.
5. Check for proper lighting of indicators (for models with a set indi-
cator.)
Never disassemble or repair the Sensor.
Environment
Water Resistivity
Do not use the Proximity Sensor underwater, outdoors, or in the rain.
Operating Environment
Be sure to use the Proximity Sensor within its operating ambient
temperature range and do not use the Proximity Sensor outdoors so
that its reliability and life expectancy can be maintained. Although
the Proximity Sensor is water resistive, a cover to protect the Prox-
imity Sensor from water or water-soluble machining oil is recom-
mended so that its reliability and life expectancy can be maintained.
Do not use the Proximity Sensor in an environment with chemical
gas (e.g., strong alkaline or acid gasses including nitric, chromic,
and concentrated sulfuric acid gases).
Inrush Current
A load that has a large inrush current (e.g., a lamp or motor) will
damage the Proximity Sensor, in which case connect the load to the
Proximity Sensor through a relay.
Type Torque
M8 Stainless steel type 9 N·m
Brass type 4 N·m
M12 30 N·m
M18 70 N·m
M30 180 N·m
16
Warranties, Limitations of Liability
â– WARRANTY
OMRON’s exclusive warranty is that the products are free
from defects in materials and workmanship for a period of
one year (or other period if specified) from date of sale by
OMRON.
OMRON MAKES NO WARRANTY OR REPRESENTATION,
EXPRESS OR IMPLIED, REGARDING NON-
INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR
PARTICULAR PURPOSE OF THE PRODUCTS. ANY
BUYER OR USER ACKNOWLEDGES THAT THE BUYER
OR USER ALONE HAS DETERMINED THAT THE
PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS
OF THEIR INTENDED USE. OMRON DISCLAIMS ALL
OTHER WARRANTIES, EXPRESS OR IMPLIED.
â– LIMITATIONS OF LIABILITY
OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL,
INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS OF
PROFITS OR COMMERCIAL LOSS IN ANY WAY
CONNECTED WITH THE PRODUCTS, WHETHER SUCH
CLAIM IS BASED ON CONTRACT, WARRANTY,
NEGLIGENCE, OR STRICT LIABILITY.
In no event shall responsibility of OMRON for any act exceed
the individual price of the product on which liability is
asserted.
IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR
WARRANTY, REPAIR, OR OTHER CLAIMS REGARDING
THE PRODUCTS UNLESS OMRON’S ANALYSIS
CONFIRMS THAT THE PRODUCTS WERE PROPERLY
HANDLED, STORED, INSTALLED, AND MAINTAINED AND
NOT SUBJECT TO CONTAMINATION, ABUSE, MISUSE,
OR INAPPROPRIATE MODIFICATION OR REPAIR.
Application Considerations
â– SUITABILITY FOR USE
OMRON shall not be responsible for conformity with any
standards, codes, or regulations that apply to the
combination of 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.
Know and observe all prohibitions of use applicable to this
product.
NEVER USE THE PRODUCTS FOR AN APPLICATION
INVOLVING SERIOUS RISK TO LIFE OR PROPERTY
WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE
HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND
THAT THE OMRON PRODUCT IS PROPERLY RATED AND
INSTALLED FOR THE INTENDED USE WITHIN THE
OVERALL EQUIPMENT OR SYSTEM.
Disclaimers
â– 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.
â– DIMENSIONS AND WEIGHTS
Dimensions and weights are nominal and are not to be used
for manufacturing purposes, even when tolerances are
shown.
In the interest of product improvement, specifications are subject to change without notice.
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. D100-E1-01B
OMRON Corporation
Industrial Automation Company
Sensing Devices Division H.Q.
Industrial Sensors Division
Shiokoji Horikawa, Shimogyo-ku,
Kyoto, 600-8530 Japan
Tel: (81)75-344-7022/Fax: (81)75-344-7107
2008.7
OMRON Corporation
Industrial Automation Company
http://www.ia.omron.com/ (c)Copyright OMRON Corporation 2008 All Rights Reserved.
In the interest of product improvement, specifications are subject to change without notice.
Cat. No. D100-E1-01B
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Omron:
E2A-S08KN04-M5-B1 E2A-S08LN04-M5-B1 E2A-M12KN08-WP-B1-2M E2A-M12LN08-WP-B1-2M E2A-M30LN30-
M1-B1 E2A-M12KN08-M1-B1 E2A-M12LN08-M1-B1 E2A-M18LN16-WP-B1-2M E2A-M18KN16-WP-B1-2M E2A-
M18KS08-WP-B1-2M E2A-M18LS08-WP-B1-2M E2A-S08KS02-WP-B1-2M E2A-S08LS02-WP-B1-2M E2A-
S08KS02-WP-C1-2M E2A-S08LS02-WP-C1-2M E2A-S08KS02-M1-B1 E2A-S08LS02-M5-B1 E2A-S08KS02-M5-B1
E2A-M18KN16-M1-B1 E2A-M18LN16-M1-B1 E2A-M30LS15-WP-B1-2M E2A-M30KS15-WP-B1-2M E2A-M12LS04-
WP-B1-2M E2A-M12KS04-WP-B1-2M E2A-M12KS04-M1-B1 E2A-M12LS04-M1-B1 E2A-M08LS02-M1-B1 E2A-
M08KS02-M1-B1 E2A-M30LS15-M1-B1 E2A-M30KS15-M1-B1 E2A-S08LN04-WP-B1-2M E2A-S08KN04-WP-B1-2M
E2A-M08KN04-M1-B1 E2A-M08LN04-M1-B1 E2A-M30LN30-WP-B1-2M E2A-M18KS08-M1-B1 E2A-M18LS08-M1-
B1 E2A-M18KS08-M1-C2 E2A-M18KS08-M1-C1 E2A-S08LN04-M1-B1 E2A-S08KS01-M3-B1 E2A-M08KN04-M1-B2
E2A-M08KN04-M1-C1 E2A-M08KS02-M1-B2 E2A-M08KS02-M1-C1 E2A-M08KS02-M1-C2 E2A-M08LN04-M1-C1
E2A-M12KN08-M1-B2 E2A-M12KN08-M1-C1 E2A-M12KN08-M1-C2 E2A-M12KN08-WP-B2 2M E2A-M12KN08-WP-
C2 2M E2A-M12KS04-M1-B2 E2A-M12KS04-M1-C1 E2A-M12KS04-M1-C2 E2A-M12KS04-WP-B2 2M E2A-
M12KS04-WP-C1 2M E2A-M12KS04-WP-C2 2M E2A-M12LN08-M1-B2 E2A-M12LN08-M1-C1 E2A-M12LN08-WP-B2
2M E2A-M12LN08-WP-C1 2M E2A-M12LS04-M1-B2 E2A-M12LS04-M1-C1 E2A-M12LS04-WP-C1 2M E2A-
M18KN16-M1-B2 E2A-M18KN16-M1-C1 E2A-M18KN16-WP-B2 2M E2A-M18KN16-WP-C1 2M E2A-M18KN16-WP-
C2 2M E2A-M18KS08-M1-B2 E2A-M18KS08-WP-B2 2M E2A-M18KS08-WP-C1 2M E2A-M18KS08-WP-C2 2M E2A-
M18LN16-M1-C1 E2A-M18LN16-WP-C1 2M E2A-M18LS08-M1-B2 E2A-M18LS08-M1-C1 E2A-M18LS08-WP-C1 2M
E2A-M30KN20-M1-B1 E2A-M30KN20-M1-B2 E2A-M30KN20-M1-C1 E2A-M30KN20-WP-B1 2M E2A-M30KN20-
WP-B2 2M E2A-M30KN20-WP-C1 2M E2A-M30KS15-M1-B2 E2A-M30KS15-M1-C1 E2A-M30KS15-M1-C2 E2A-
M30KS15-WP-B2 2M E2A-M30KS15-WP-C1 2M E2A-M30KS15-WP-C2 2M E2A-M30LN30-M1-B2 E2A-M30LN30-
M1-C1 E2A-M30LN30-WP-C1 2M E2A-M30LS15-M1-B2 E2A-M30LS15-M1-C1 E2A-M30LS15-WP-C1 2M E2A-
S08KN04-M1-B1 E2A-S08KN04-M1-C1 E2A-S08KN04-M5-C1
