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
M8 Shielded 2.0 mm Pre-wired Stainless
Non-shielded 4.0 mm Pre-wired Stainless
distance
Connection Body
M12 connector Stainless
M8 connector (3pin)
M12 connector Stainless
M8 connector (3pin)
material
steel
steel
Brass 27 (43) PNP E2A-M08KS02-M1-B1 E2A-M08KS02-M1-B2
Stainless
steel
steel
steel
Brass 27 (43) PNP E2A-M08KN04-M1-B1 E2A-M08KN04-M1-B2
Stainless
steel
Thread length
(overall length)
27 (40) PNP E2A-S08KS02-WP-B1 2M E2A-S08KS02-WP-B2 2M
49 (62) PNP E2A-S08LS02-WP-B1 2M E2A-S08LS02-WP-B2 2M
27 (43) PNP E2A-S08KS02-M1-B1 E2A-S08KS02-M1-B2
49 (65) PNP E2A-S08LS02-M1-B1 E2A-S08LS02-M1-B2
49 (65) PNP E2A-M08LS02-M1-B1 E2A-M08LS02-M1-B2
27 (39) PNP E2A-S08KS02-M5-B1 E2A-S08KS02-M5-B2
49 (61) PNP E2A-S08LS02-M5-B1 E2A-S08LS02-M5-B2
27 (40) PNP E2A-S08KN04-WP-B1 2M E2A-S08KN04-WP-B2 2M
49 (62) PNP E2A-S08LN04-WP-B1 2M E2A-S08LN04-WP-B2 2M
27 (43) PNP E2A-S08KN04-M1-B1 E2A-S08KN04-M1-B2
49 (65) PNP E2A-S08LN04-M1-B1 E2A-S08LN04-M1-B2
49 (65) PNP E2A-M08LN04-M1-B1 E2A-M08LN04-M1-B2
27 (39) PNP E2A-S08KN04-M5-B1 E2A-S08KN04-M5-B2
49 (61) PNP E2A-S08LN04-M5-B1 E2A-S08LN04-M5-B2
Output
configuration
NPN E2A-S08KS02-WP-C1 2M E2A-S08KS02-WP-C2 2M
NPN E2A-S08LS02-WP-C1 2M E2A-S08LS02-WP-C2 2M
NPN E2A-S08KS02-M1-C1 E2A-S08KS02-M1-C2
NPN E2A-S08LS02-M1-C1 E2A-S08LS02-M1-C2
NPN E2A-M08KS02-M1-C1 E2A-M08KS02-M1-C2
NPN E2A-M08LS02-M1-C1 E2A-M08LS02-M1-C2
NPN E2A-S08KS02-M5-C1 E2A-S08KS02-M5-C2
NPN E2A-S08LS02-M5-C1 E2A-S08LS02-M5-C2
NPN E2A-S08KN04-WP-C1 2M E2A-S08KN04-WP-C2 2M
NPN E2A-S08LN04-WP-C1 2M E2A-S08LN04-WP-C2 2M
NPN E2A-S08KN04-M1-C1 E2A-S08KN04-M1-C2
NPN E2A-S08LN04-M1-C1 E2A-S08LN04-M1-C2
NPN E2A-M08KN04-M1-C1 E2A-M08KN04-M1-C2
NPN E2A-M08LN04-M1-C1 E2A-M08LN04-M1-C2
NPN E2A-S08KN04-M5-C1 E2A-S08KN04-M5-C2
NPN E2A-S08LN04-M5-C1 E2A-S08LN04-M5-C2
Operation mode NO Operation mode NC
E2A Cylindrical Proximity Sensor 1
Size Sensing
M12 Shielded 4.0 mm Pre-wired Brass 34 (50) PNP E2A-M12KS04-WP-B1 2M E2A-M12KS04-WP-B2 2M
Non-shielded 8.0 mm Pre-wired Brass 34 (50) PNP E2A-M12KN08-WP-B1 2M E2A-M12KN08-WP-B2 2M
M18 Shielded 8.0 mm Pre-wired Brass 39 (59) PNP E2A-M18KS08-WP-B1 2M E2A-M18KS08-WP-B2 2M
Non-shielded 16.0 mm Pre-wired Brass 39 (59) PNP E2A-M18KN16-WP-B1 2M E2A-M18KN16-WP-B2 2M
M30 Shielded 15.0 mm Pre-wired Brass 44 (64) PNP E2A-M30KS15-WP-B1 2M E2A-M30KS15-WP-B2 2M
Non-shielded 20.0 mm Pre-wired Brass 44 (64)
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.
distance
30.0 mm 66 (86) PNP E2A-M30LN30-WP-B1 2M E2A-M30LN30-WP-B2 2M
20.0 mm M12 connector Brass 44 (58)
30.0 mm 66 (80) PNP E2A-M30LN30-M1-B1 E2A-M30LN30-M1-B2
Connection Body
M12 connector Brass 34 (48) PNP E2A-M12KS04-M1-B1 E2A-M12KS04-M1-B2
M12 connector Brass 34 (48) PNP E2A-M12KN08-M1-B1 E2A-M12KN08-M1-B2
M12 connector Brass 39 (53) PNP E2A-M18KS08-M1-B1 E2A-M18KS08-M1-B2
M12 connector Brass 39 (53) PNP E2A-M18KN16-M1-B1 E2A-M18KN16-M1-B2
M12 connector Brass 44 (58) PNP E2A-M30KS15-M1-B1 E2A-M30KS15-M1-B2
material
Thread length
(overall length)
56 (72) PNP E2A-M12LS04-WP-B1 2M E2A-M12LS04-WP-B2 2M
56 (70) PNP E2A-M12LS04-M1-B1 E2A-M12LS04-M1-B2
56 (72) PNP E2A-M12LN08-WP-B1 2M E2A-M12LN08-WP-B2 2M
56 (70) PNP E2A-M12LN08-M1-B1 E2A-M12LN08-M1-B2
61 (81) PNP E2A-M18LS08-WP-B1 2M E2A-M18LS08-WP-B2 2M
61 (75) PNP E2A-M18LS08-M1-B1 E2A-M18LS08-M1-B2
61 (81) PNP E2A-M18LN16-WP-B1 2M E2A-M18LN16-WP-B2 2M
61 (75) PNP E2A-M18LN16-M1-B1 E2A-M18LN16-M1-B2
66 (86) PNP E2A-M30LS15-WP-B1 2M E2A-M30LS15-WP-B2 2M
66 (80) PNP E2A-M30LS15-M1-B1 E2A-M30LS15-M1-B2
(See note.)
(See note.)
Output
configuration
NPN E2A-M12KS04-WP-C1 2M E2A-M12KS04-WP-C2 2M
NPN E2A-M12LS04-WP-C1 2M E2A-M12LS04-WP-C2 2M
NPN E2A-M12KS04-M1-C1 E2A-M12KS04-M1-C2
NPN E2A-M12LS04-M1-C1 E2A-M12LS04-M1-C2
NPN E2A-M12KN08-WP-C1 2M E2A-M12KN08-WP-C2 2M
NPN E2A-M12LN08-WP-C1 2M E2A-M12LN08-WP-C2 2M
NPN E2A-M12KN08-M1-C1 E2A-M12KN08-M1-C2
NPN E2A-M12LN08-M1-C1 E2A-M12LN08-M1-C2
NPN E2A-M18KS08-WP-C1 2M E2A-M18KS08-WP-C2 2M
NPN E2A-M18LS08-WP-C1 2M E2A-M18LS08-WP-C2 2M
NPN E2A-M18KS08-M1-C1 E2A-M18KS08-M1-C2
NPN E2A-M18LS08-M1-C1 E2A-M18LS08-M1-C2
NPN E2A-M18KN16-WP-C1 2M E2A-M18KN16-WP-C2 2M
NPN E2A-M18LN16-WP-C1 2M E2A-M18LN16-WP-C2 2M
NPN E2A-M18KN16-M1-C1 E2A-M18KN16-M1-C2
NPN E2A-M18LN16-M1-C1 E2A-M18LN16-M1-C2
NPN E2A-M30KS15-WP-C1 2M E2A-M30KS15-WP-C2 2M
NPN E2A-M30LS15-WP-C1 2M E2A-M30LS15-WP-C2 2M
NPN E2A-M30KS15-M1-C1 E2A-M30KS15-M1-C2
NPN E2A-M30LS15-M1-C1 E2A-M30LS15-M1-C2
PNP E2A-M30KN20-WP-B1 2M E2A-M30KN20-WP-B2 2M
NPN E2A-M30KN20-WP-C1 2M E2A-M30KN20-WP-C2 2M
NPN E2A-M30LN30-WP-C1 2M E2A-M30LN30-WP-C2 2M
PNP E2A-M30KN20-M1-B1 E2A-M30KN20-M1-B2
NPN E2A-M30KN20-M1-C1 E2A-M30KN20-M1-C2
NPN E2A-M30LN30-M1-C1 E2A-M30LN30-M1-C2
Operation mode NO Operation mode NC
2 E2A Cylindrical Proximity Sensor
■ Model Number Legend
2 3 4 5 6 7 8 9 10 111 12
E2A@-@@@@@-@-@@-@@
Example: E2A-M12LS04-M1-B1 Standard, M12, long barrel, shielded, Sn=4 mm, M12 connector, PNP-NO
1. Basic name
2. Sensing technology
3. Housing shape and material
4. Housing size
5. Barrel length
6. Shield
7. Sensing distance
E2A-M08KN04-WP-B1 5M Standard, M8, short barrel, non-shielded, Sn=4 mm, pre-wired PVC cable, PNP-NO, cable length=5 m
8. Kind of connection
E2A
Blank: Standard double distance
M: Cylindrical, metric threaded, brass
S: Cylindrical, metric threaded, stainless steel
08: 8 mm
12: 12 mm
18: 18 mm
30: 30 mm
K: Standard length
L: Long body
S: Shielded
N: Non-shielded
Numeral: Sensing distance: e.g. 02=2 mm, 16=16 mm
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
E2A Cylindrical Proximity Sensor 3
Specifications
■ DC 3-wire Models
Size M8 M12
Type Shielded Non-shielded Shielded Non-shielded
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
Item
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)
Current consumption (DC 3-wire) 10 mA max.
Output type -B models: PNP open collector
Control
output
Indicator Operation indicator (Yellow LED)
Operation mode
(with sensing object approaching)
Protection circuit Power source circuit reverse polarity protection,
Ambient air temperature Operating: −40°C to 70°C, Storage:
Temperature in
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
Standard and listings (See note 3.) IEC60529: IP67, Degree of protection
Connection method -WP models: Pre-wired models (Standard length: 2 m)
Weight
(packaged)
Material Case Stainless steel or brass-nickel plated Brass-nickel plated
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.
Load current
(See note 2.)
Residual voltage 2 V max. (under load current of 200 mA with cable length of 2 m)
fluence (See note 2.) ±10% max. of sensing distance at 23°C within temperature range of −25°C to 70°C
Pre-wired model Approx. 65 g Approx. 85 g
M12 connector model M12 connector models: Approx. 20 g
Sensing surface PBT
Cable PVC
Clamping nut Brass-nickel plated
E2A-S08@S02-@@-C1
E2A-S08@S02-@@-C2
12 to 24 VDC. Ripple (p-p): 10% max.
(10 to 32 VDC)
-C models: NPN open collector
200 mA max. (32 VDC max.)
-B1/-C1 models: NO
-B2/-C2 models: NC
For details, refer to the timing charts.
Surge suppressor, Short-circuit protection
±15% max. of sensing distance at 23°C within temperature range of −40°C to 70°C
2
500 m/s
EN60947-5-2: EMC
-M1 models: M12 4-pin connector models
-M5 models: M8 3-pin connector models
M8 connector models: Approx. 15 g
, 10 times each in X, Y and Z directions 1,000 m/s2, 10 times each in X, Y and Z directions
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
−40°C to
85°C (with no icing or condensation)
E2A-M12@S04-@@-B1
E2A-M12@S04-@@-B2
E2A-M12@S04-@@-C1
E2A-M12@S04-@@-C
Output reverse polarity protection, Power source
circuit reverse polarity protection, Surge suppressor, Short-circuit protection
Approx. 35 g
E2A-M12@N08-@@-B1
E2A-M12@N08-@@-B2
E2A-
M12@N08-@@-C1
2
E2A-M12@N08-@@-C2
4 E2A Cylindrical Proximity Sensor
■ DC 3-wire Models
Size M18 M30
Type Shielded Non-shielded Shielded Non-shielded Non-shielded
E2A-M18@S08-@@-B1
E2A-M18@S08-@@-B2
Item
E2A-M18@S08-@@-C1
E2A-M18@S08-@@-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)
Response frequency
(See note 1.)
Power supply voltage
(operating voltage range)
Current consumption (DC
3-wire)
Output type -B models: PNP open collector
Control
output
Load current (See
note 2.)
24×24×1 mm 48×48×1 mm 45×45×1 mm 60×60×1 mm 90×90×1 mm
500 Hz 400 Hz 250 Hz 100 Hz 100 Hz
12 to 24 VDC. Ripple (p-p): 10% max.
(10 to 32 VDC)
10 mA max.
-C models: NPN open collector
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 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.)
ient humidity Operating: 35% to 95%, Storage: 35% to 95%
Amb
±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
±
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
Standard and listings
(See note 3.)
1,000 m/s
IEC60529: IP67, Degree of protection
EN60947-5-2: EMC
2
, 10 times each in X, Y and Z directions
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. 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
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.
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
temperature range of −40°C to 70°C
E2A-M30LN30-@@-B1
E2A-M30LN30-@@-B2
E2A-M30LN30-@@-C1
E2A-M30LN30-@@-C2
E2A Cylindrical Proximity Sensor 5
Engineering Data
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
Operating Range (Typical)
Influence of Sensing Object Size and Materials
Shielded Models
6 E2A Cylindrical Proximity Sensor
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
E2A Cylindrical Proximity Sensor 7
Operation
Sensing
object
(%)
100 0
Rated
sensing
distance
Sensing zoneNon-sensing zone
Proximity
Sensor
ON
OFF
ON
OFF
Yellow indicator
Control output
3
1
2
4
3
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
2
4
3
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: )
■ PNP Output
Operation mode Model Timing chart Output circuit
NO E2A-@-@-B1
NC E2A-@-@-B2
8 E2A Cylindrical Proximity Sensor
■ NPN Output
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
2
4
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
2
4
3
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: )
Operation mode Model Timing chart Output circuit
NO E2A-@-@-C1
NC E2A-@-@-C2
E2A Cylindrical Proximity Sensor 9
Dimensions
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-@@
5
10
64.5
44
36
M30×1.5
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)
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 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)
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)
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)
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)
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 mm
2
; 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-@@
Note:All units are in millimeters unless otherwise indicated.
Pre-wired Models (Shielded) Pre-wired Models (Non-shielded)
10 E2A Cylindrical Proximity Sensor
E2A-S08LS02-WP-@@
13
3 5
M8×1
62
49
Two, clamping nuts
(See note 1.)
Indicator (See note 2.)
E2A-S08LN04-WP-@@
M8×1
3
6
13
6 dia.
62
49
Two, clamping nuts
5
(See note 1.)
Indicator (See note 2.)
Note 1. 4-dia. vinyl-insulated round cable with 3 conductors (conductor cross section:
2
0.3 mm
; insulator diameter: 1.3 mm); standard length: 2 m
2.
Operation indicator (yellow)
E2A-M12LS04-WP-@@
72.3
17
M12×1
Note 1. 4-dia. vinyl-insulated round cable with 3 conductors (conductor cross section:
2
0.3 mm
; insulator diameter: 1.3 mm); standard length: 2 m
2.
Operation indicator (yellow)
56
4
Two, clamping nuts
7
(See note 1.)
Indicator (See note 2.)
E2A-M18LS08-WP-@@
81.5
24
M18×1
Note 1. 4-dia. vinyl-insulated round cable with 3 conductors (conductor cross section:
2
0.3 mm
; insulator diameter: 1.3 mm); standard length: 2 m
2.
Operation indicator (yellow)
61
4
Two, clamping nuts
10
Indicator (See note 2.)
(See note 1.)
E2A-M30LS15-WP-@@
86.5
66
36
5
10
Note 1. 4-dia. vinyl-insulated round cable with 3 conductors (conductor cross section:
2
0.3 mm
; insulator diameter: 1.3 mm); standard length: 2 m
2.
Operation indicator (yellow)
E2A-M12LN08-WP-@@
72.3
17
56
747
9.4 dia.
M12×1
Note 1. 4-dia. vinyl-insulated round cable with 3 conductors (conductor cross section:
2
; insulator diameter: 1.3 mm); standard length: 2 m
0.3 mm
2.
Operation indicator (yellow)
Two, clamping nuts
Indicator (See note 2.)
E2A-M18LN16-WP-@@
81.5
61
24
15.3 dia.
Note 1. 4-dia. vinyl-insulated round cable with 3 conductors (conductor cross section:
2
0.3 mm
; insulator diameter: 1.3 mm); standard length: 2 m
2.
Operation indicator (yellow)
10
M18×1
4
Two, clamping nuts
10
Indicator (See note 2.)
(See note 1.)
E2A-M30LN30-WP-@@
86.5
36
15
66
5
10
(See note 1.)
Indicator (See note 2.)
M30×1.5
Note 1. 4-dia. vinyl-insulated round cable with 3 conductors (conductor cross section:
2
; insulator diameter: 1.3 mm); standard length: 2 m
0.3 mm
2.
Operation indicator (yellow)
Two, clamping nuts
(See note 1.)
26.6 dia.
Indicator (See note 2.)
M30×1.5
Note 1. 4-dia. vinyl-insulated round cable with 3 conductors (conductor cross section:
2
; insulator diameter: 1.3 mm); standard length: 2 m
0.3 mm
2.
Operation indicator (yellow)
Two, clamping nuts
Mounting Hole Cutout Dimensions
External diameter
of Proximity Sensor
M8
M12
F
M18
M30
Dimension F (mm)
+0.5
8.5 dia.
0
+0.5
12.5 dia.
0
+0.5
18.5 dia.
0
+0.5
30.5 dia.
0
E2A Cylindrical Proximity Sensor 11
(See note 1.)
M12 Connector Models (Shielded) M12 Connector Models (Non-shielded)
E2A-S08KS02-M1-@@
E2A-M08KS02-M1-@@
E2A-M12KS04-M1-@@
E2A-M12KN08-M1-@@
27
43
3
5
13
M8×1
M12×1
Note: Operation indicator (yellow LED, 4×90°)
E2A-S08KN04-M1-@@
E2A-M08KN04-M1-@@
6 dia.
3
5
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-@@
12 E2A Cylindrical Proximity Sensor
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
3
5
13
M8×1
M12×1
Note: Operation indicator (yellow LED, 4×90°)
E2A-S08LN04-M1-@@
E2A-M08LN04-M1-@@
6 dia.
3
5
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
M8 Connector Models (Shielded) M8 Connector Models (Non-shielded)
E2A Cylindrical Proximity Sensor 13
Precautions
l
m
n
m
D
d dia.
l
■ 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.
■ 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 Sensor before supplying power to the load.
Effects of Surrounding Metal
When mounting the E2A within a metal panel, ensure that the clearances given in the following table are maintained.
Wiring
Be sure to wire the E2A and load correctly, otherwise it may be damaged.
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 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.
Type Dimension M8 M12 M18 M30
Short
barrel
Shielded l 000
m 4.5 12 24 45
d --- --- 27 45
D 001.5 4
n 121827 45
Nonshielded
Note 1. In the case of using the supplied nuts.
14 E2A Cylindrical Proximity Sensor
l 12 15 22 30 40
m 8 20 48 70 90
d 244070 90 120
D 121522 30 40
n 244070 90 120
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.
(See note
1.)
0
(See note 2.)
(Unit: mm)
Long
barrel
Type Dimension M8 M12 M18 M30
Short
barrel
Shielded A 20 30 60 110
B 15203570
Nonshielded
A 80 120 200 300 300
B 60 100 120 200 300
(Unit: mm)
Long
barrel
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
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.
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
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 indicator.)
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 Proximity Sensor from water or water-soluble machining oil is recommended 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.
E2A Cylindrical Proximity Sensor 15
Warranties, Limitations of Liability
■ 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 NONINFRINGEMENT, 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.
Application Considerations
■ 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.
■ 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.
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
■ 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 SHOW
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
Cat. No. D100-E1-01B
In the interest of product improvement, specifications are subject to change without notice.
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
N ARE IN MILLIMETERS.
■ DIMENSIONS AND WEIGHTS
Dimensions and weights are nominal and are not to be used
for manufacturing purposes, even when tolerances are
shown.
16
Cat. No. D100-E1-01B
OMRON Corporation
Industrial Automation Company
http://www.ia.omron.com/
2008.7
In the interest of product improvement, specifications are subject to change without notice.
(c)Copyright OMRON Corporation 2008 All Rights Reserved.
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