Omron E2AX - User manual

D-9E2AX
E2AX
Cylindrical Inductive Sensor for Explosive Environments
E2AX
• ATEX certification Group II category 3D
(94/9/EG Appendix VIII)
• Typically for explosive areas zone 22 with
non leading dust construction based on EN50014
and EN50281-1-1/2
Ordering Information
DC 3-wire models (NO + NC: DC 4-wire) *1
*1. Please contact your OMRON representative for DC 2-wire models.
*2. Stainless steel models are also available. Please contact your OMRON representative.
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.
Size Sensing
distance
Connec-
tion
Body
material
Thread
length
(overall
length)
Output
confi-
guration
Operation mode NO Operation mode NC Operation mode NO + NC
M12
Shiel-
ded 4.0 mm M12 connector Brass*2
34 (48) PNP
E2AX-M12KS04-M1-B1 E2AX-M12KS04-M1-B2 E2AX-M12KS04-M1-B3
NPN E2AX-M12KS04-M1-C1 E2AX-M12KS04-M1-C2 E2AX-M12KS04-M1-C3
56 (70) PNP
E2AX-M12LS04-M1-B1 E2AX-M12LS04-M1-B2 E2AX-M12LS04-M1-B3
NPN E2AX-M12LS04-M1-C1 E2AX-M12LS04-M1-C2 E2AX-M12LS04-M1-C3
Non-
shiel-
ded
8.0 mm M12
connector Brass*2
34 (48) PNP
E2AX-M12KN08-M1-B1 E2AX-M12KN08-M1-B2 E2AX-M12KN08-M1-B3
NPN E2AX-M12KN08-M1-C1 E2AX-M12KN08-M1-C2 E2AX-M12KN08-M1-C3
56 (70) PNP
E2AX-M12LN08-M1-B1 E2AX-M12LN08-M1-B2 E2AX-M12LN08-M1-B3
NPN E2AX-M12LN08-M1-C1 E2AX-M12LN08-M1-C2 E2AX-M12LN08-M1-C3
M18
Shiel-
ded 8.0 mm M12 connector Brass*2
39 (53) PNP
E2AX-M18KS08-M1-B1 E2AX-M18KS08-M1-B2 E2AX-M18KS08-M1-B3
NPN E2AX-M18KS08-M1-C1 E2AX-M18KS08-M1-C2 E2AX-M18KS08-M1-C3
61 (75) PNP
E2AX-M18LS08-M1-B1 E2AX-M18LS08-M1-B2 E2AX-M18LS08-M1-B3
NPN E2AX-M18LS08-M1-C1 E2AX-M18LS08-M1-C2 E2AX-M18LS08-M1-C3
Non-
shiel-
ded
16.0 mm M12
connector Brass*2
39 (53) PNP
E2AX-M18KN16-M1-B1 E2AX-M18KN16-M1-B2 E2AX-M18KN16-M1-B3
NPN E2AX-M18KN16-M1-C1 E2AX-M18KN16-M1-C2 E2AX-M18KN16-M1-C3
61 (75) PNP
E2AX-M18LN16-M1-B1 E2AX-M18LN16-M1-B2 E2AX-M18LN16-M1-B3
NPN E2AX-M18LN16-M1-C1 E2AX-M18LN16-M1-C2 E2AX-M18LN16-M1-C3
M30
Shiel-
ded 15.0 mm M12 connector Brass*2
44 (58) PNP E2AX-M30KS15-M1-B1 E2AX-M30KS15-M1-B2
E2AX-M30KS15-M1-B3
NPN E2AX-M30KS15-M1-C1 E2AX-M30KS15-M1-C2 E2AX-M30KS15-M1-C3
66 (80) PNP E2AX-M30LS15-M1-B1 E2AX-M30LS15-M1-B2
E2AX-M30LS15-M1-B3
NPN E2AX-M30LS15-M1-C1 E2AX-M30LS15-M1-C2 E2AX-M30LS15-M1-C3
Non-
shiel-
ded
20.0 mm
M12
connector Brass*2
44 (58)
(See
note.)
PNP E2AX-M30KN20-M1-B1 E2AX-M30KN20-M1-B2 E2AX-M30KN20-M1-B3
NPN E2AX-M30KN20-M1-C1 E2AX-M30KN20-M1-C2 E2AX-M30KN20-M1-C3
30.0 mm 66 (80) PNP E2AX-M30LN30-M1-B1 E2AX-M30LN30-M1-B2
E2AX-M30LN30-M1-B3
NPN E2AX-M30LN30-M1-C1 E2AX-M30LN30-M1-C2 E2AX-M30LN30-M1-C3

D-10 Inductive Sensors
Connectivity
The E2A sensors are available with the following connectors:
Connector models
Standard connectors: M12 -M1
Model Number Legend
Example: E2A-M12LS04-M1-B1 Standard, M12, long barrel, shielded, Sn=4 mm, M12 connector, PNP-NO
E2A-S08KN04-WP-B1 5M Standard, M8 stainless steel, 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: Triple distance
U: Mobile usage
X: Explosion hazarduous environments
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
M1: M12 connector (4 pin) *
M3: M8 connector (4 pin)
M5: M8 connector (3 pin)
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)
3: Antivalent (NO+NC)
11.Specials (e.g., cable material, oscillating frequency)
12.Cable length
Blank: Connector type
Numeral: Cable length
Note: *In case of DC 2-wire models the M12 connector identifier is '-M1G'
2 3 4 5 6 7 8 9 10 111 12
E2A@-@@@@@-@-@@-@@

D-11E2AX
E2AX
Specifications
DC 3-wire Models / DC 4-wire (NO+NC)
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 M12
Type Shielded Non-shielded
Item
E2AX-M12 @ S04- @@ -B @
E2AX-M12 @ S04- @@ -C @
E2AX-S12 @ S04- @@ -B @
E2AX-S12 @ S04- @@ -C @
E2AX-M12 @ N08- @@ -B @
E2AX-M12 @ N08- @@ -C @
E2AX-S12 @ N08- @@ -B @
E2AX-S12 @ N08- @@ -C @
Sensing distance 4 mm ± 10% 8 mm ± 10%
Setting distance 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) 12×12×1 mm 24×24×1 mm
Response frequency (See note 1.) 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
-B3/ -C3 models: NO+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 MΩmin. (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.)
IP65
EMC after EN60947-5-2
ATEX after EN50014
EN50281-1-1/2
Connection method Please see chapter ’Connectivity’ for details on M12 connectors.
Weight
(packaged) Connector model Approx. 35 g
Material
Case Brass-nickel plated or stainless steel
Sensing surface PBT
Clamping nut Brass-nickel plated for brass models stainless steel for steel models

D-12 Inductive Sensors
DC 3-wire Models / DC 4-wire (NO+NC)
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
E2AX-M18@S08-M1-B@
E2AX-M18@S08-M1-C@
E2AX-S18@S08-M1-B@
E2AX-S18@S08-M1-C@
E2AX-M18@N16-M1-B@
E2AX-M18@N16-M1-C@
E2AX-S18@N16-M1-B@
E2AX-S18@N16-M1-C@
E2AX-M30@S15-M1-B@
E2AX-M30@S15-M1-C@
E2AX-S30@S15-M1-B@
E2AX-S30@S15-M1-C@
E2AX-M30KN20-M1-B@
E2AX-M30KN20-M1-C@
E2AX-S30KN20-M1-B@
E2AX-S30KN20-M1-C@
E2AX-M30LN30-M1-B@
E2AX-M30LN30-M1-C@
E2AX-S30LN30-M1-B@
E2AX-S30LN30-M1-C@
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
approaching)
-B1/-C1 models: NO
-B2/-C2 models: NC
-B3/ -C3 models: NO+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 MΩmin. (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.)
IP65
EMC after EN60947-5-2
ATEX after EN50014
EN50281-1-1/2
Connection method Please see chapter 'Connectivity' for details on M12 connectors.
Weight
(pak-
kaged)
Connector model Approx. 70 g Approx. 200 g Approx. 200 g Approx. 260 g
Material
Case Brass-nickel plated or stainless steel
Sensing surface PBT
Clamping nut brass-nickel plated for brass models stainless steel for steel models

D-13E2AX
E2AX
DC 2-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 50 mA max.
3. For USA and Canada: Use class 2 circuit only.
Size M12
Type Shielded Non-shielded
Item
E2AX-M12 @ S04-D @
E2AX-S12 @ S04-D @
E2AX-M12 @ N08-D @
E2AX-S12 @ N08-D @
Sensing distance 4 mm ± 10% 8 mm ± 10%
Setting distance 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 12×12×1 mm 24×24×1 mm
Response frequency (See note 1.) 1,000 Hz 800 Hz
Power supply voltage
(operating voltage range)
12 to 24 VDC. Ripple (p-p): 10% max.
(10 to 32 VDC)
Leakage current 0.8 mA max.
Output type DC 2 wire type
Control
output
Load current
(See note 2.) 3 to 100 mA
Residual voltage 3 V max. (under load current of 100 mA with cable length of 2 m)
Indicator (see timing chart) NO type: Operation indicator (Yellow), Setting indicator (Red)
NC type: Operation indicator (Yellow)
Operation mode -D1 models: NO
-D2 models: NC
Protection circuit Surget suppressor, Short circuit protection
Ambient temperature Operating: −40°C to 70°C, Storage: −40°C to 85°C (with no icing or condensation)
Temperature influence ±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 MΩmin. (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.)
IP65
EMC after EN60947-5-2
ATEX after EN50014
EN50281-1-1/2
Connection method Please see chapter 'Connectivity' for details on different cable materials and lenghts and M8 or M12
connectors.
Weight
(packaged)
Pre-wired model Approx. 85 g
Connector model Approx. 35 g
Material
Case Brass-nickel plated or stainless steel
Sensing surface PBT
Clamping nut Brass-nickel plated for brass models stainless steel for steel models

D-14 Inductive Sensors
DC 2-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 50 mA max.
3. For USA and Canada: Use class 2 circuit only.
Size M18 M30
Type Shielded Non-shielded Shielded Non-shielded
Item
E2AX-M18@S08-D@
E2AX-S18@S08-D@
E2AX-M18@N16-D@
E2AX-S18@N16-D@
E2AX-M30 @ S15-D @
E2AX-S30 @ S15-D @
E2AX-M30 @ N30-D @
E2AX-M30 @ N20-D @
E2AX-S30 @ N30-D @
E2AX-S30 @ N20-D @
Sensing distance 8 mm ±10% 16 mm ± 10% 15 mm ± 10% Short body: 20 m ± 10%
Long body: 30 m± 10%
Setting distance 0 to 6.4 mm 0 to 12.8 mm 0 to 12 mm Short body: 0 to 16 mm
Long body: 0 to 24 mm
Differential travel 10% max. of sensing distance
Target Ferrous metal (The sensing distance decreases with non-ferrous metal.)
Standard target 24x24x1 mm 48x48x1 mm 45x45x1 mm
Short body: 60x60x1 mm
Long body: 90x90x1mm
Response frequency (See note 1.) 500 Hz 400 Hz 250 Hz 100 Hz
Power supply voltage
(operating voltage range)
12 to 24 VDC. Ripple (p-p): 10% max.
(10 to 32 VDC)
Leakage current 0.8 mA max.
Output type DC 2 wire type
Control
output
Load current
(See note 2.) 3 to 100 mA
Residual voltage 3 V max. (under load current of 100 mA with cable length of 2 m)
Indicator (see timing chart) NO type: Operation indicator (Yellow), Setting indicator (Red)
NC type: Operation indicator (Yellow)
Operation mode -D1 models: NO
-D2 models: NC
Protection circuit Surget suppressor, Short circuit protection
Ambient temperature Operating: −40°C to 70°C, Storage: −40°C to 85°C (with no icing or condensation)
Temperature influence ±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 MΩmin. (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
Standard and listings (See note 3.)
IP65
EMC after EN60947-5-2
ATEX after EN50014
EN50281-1-1/2
Connection method Please see chapter 'Connectivity' for details on M12 connectors.
Weight
(packaged) Connector model Approx. 70 g Approx. 200 g short body: 200 g
long body: 260 g
Material
Case Brass-nickel plated or stainless steel
Sensing surface PBT
Clamping nut brass-nickel plated for brass models stainless steel for steel models

D-15E2AX
E2AX
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
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-M30KN20
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
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
E2AX-M12@S04/ E2A-S12@S04 E2AX-M18@S08/E2A-S18@S08 E2AX-M30@S15/ E2A-S30@S15
Side length of sensing object d (mm)
Sensing distance X (mm)
Iron
Stainless steel (SUS303)
Brass
Copper
Aluminum

D-16 Inductive Sensors
Non-shielded Models
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
E2AX-M12@N08/E2A-S12@N08
Side length of sensing object d (mm)
Sensing distance X (mm)
Iron
Brass
Aluminum
Stainless steel (SUS303)
Copper
E2AX-M18@N16/E2A-S18@N16
Side length of sensing object d (mm)
Sensing distance X (mm)
Iron
Copper
Brass
Aluminum
E2AX-M30LN30/E2A-S30LN30
Side length of sensing object d (mm)
Sensing distance X (mm)
Iron
Copper
Brass
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)
E2AX-M30KN20/E2A-S30KN20

D-17E2AX
E2AX
Operation
DC 3-wire models
PNP Output
Operation mode Model Timing chart Output circuit
NO E2AX-@-@-B1
NC E2AX-@-@-B2
NO + NC E2AX-@-@-B3
Sensing
object
(%) 100 0
Rated sensing distance
Sensing zoneNon-sensing zone
Proximity
Sensor
ON
OFF
ON
OFF
Yellow indicator
Control output
3
1
24
Load
(See note 1.)
+V
0 V
M12 Connector
Pin Arrangement
(See note)
Note: Pin 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
24
Load
(See note 1.)
+V
0 V
M12 Connector
Pin Arrangement
(See note)
Note: Pin 4 of the M12
connector is not used.
Proximity
Sensor
main
circuits
Sensing
object
(%) 100 0
Rated sensing distance
Sensing zoneNon-sensing zone
Proximity
Sensor
ON
OFF
ON
OFF
Yellow indicator
NO output
NC output
ON
OFF
+V
3
1
24
M12 Connector
Pin Arrangement
NO output
Load
Proximity
Sensor
main
circuits
2
3
Load
NC output
4
1
0 V

D-18 Inductive Sensors
DC 3-wire models
NPN Output
Operation mode Model Timing chart Output circuit
NO E2AX-@-@-C1
NC E2AX-@-@-C2
NO + NC E2AX-@-@-C3
Sensing
object
(%) 100 0
Rated sensing distance
Sensing zoneNon-sensing zone
Proximity
Sensor
ON
OFF
ON
OFF
Yellow indicator
Control output
Load
(See note 1.)
+V
0 V
Note: Pin 2 of the M12
connector is not used.
Proximity
Sensor
main
circuits
3
1
24
M12 Connector
Pin Arrangement
(See note)
(%) 100 0
Sensing
object
Rated sensing distance
Sensing zoneNon-sensing zone
Proximity
Sensor
ON
OFF
ON
OFF
Yellow indicator
Control output
Load
(See note 1.)
+V
0 V
Note: Pin 4 of the M12
connector is not used.
Proximity
Sensor
main
circuits
3
1
24
M12 Connector
Pin Arrangement
(See note)
Sensing
object
(%) 100 0
Rated sensing distance
Sensing zoneNon-sensing zone
Proximity
Sensor
ON
OFF
ON
OFF
Yellow indicator
NO output
NC output
ON
OFF
+V
3
1
24
M12 Connector
Pin Arrangement
Proximity
Sensor
main
circuits
2
3
Load
NC output
4
1
0 V
Load
NO output

D-19E2AX
E2AX
DC 2-wire models
Output Circuit Diagrams (Operation)
Operation mode Model Timing chart Output circuit
NO E2AX-@-D1
NC E2AX-@-D2
Sensing
object
(%) 100 80 0
Rated sensing distance
Sensing zoneNon-sensing zone
Proximity
Sensor
ON
OFF
ON
OFF
ON
OFF
Yellow indicator
Red indicator
Control output
Load Brown
Blue
+V
0 V
Load can be connected to +V or 0V side.
3
1
24
M12 Connector
Pin Arrangement
(%) 100 0
Sensing
object
Rated sensing distance
Sensing zoneNon-sensing zone
Proximity
Sensor
ON
OFF
ON
OFF
Yellow indicator
Control output
Load Brown
Blue
+V
0 V
Load can be connected to +V or 0V side.
3
1
24
M12 Connector
Pin Arrangement

D-20 Inductive Sensors
Dimensions
Note:All units are in millimeters unless otherwise indicated.
M12 Connector Models (Shielded) M12 Connector Models (Non-shielded)
E2AX-M12KS04-M1-@@/E2A-S12KS04-M1-@ E2AX-M12KN08-M1-@@/E2A-S12KN08-M1-@
E2AX-M18KS08-M1-@@/E2A-S18KS08-M1-@ E2AX-M18KN16-M1-@@/E2A-S18KN16-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
E2AX-M30KS15-M1-@@/E2A-S30KS15-M1-@
44
5
58
36 10
M30×1.5
M12×1
Note 1: Operation indicator (yellow LED, 4×90°)
Note 2: for NO+NC (-B3 / -C3) models the total
length is 4 mm longer
Note 1: Operation indicator (yellow LED, 4×90°)
Note 2: for NO+NC (-B3 / -C3) models the total
length is 4 mm longer
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.)
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
E2AX-M30KN20-M1-@@/E2A-S30KN20-M1-@

D-21E2AX
E2AX
Note: Please contact your OMRON sales representative for dimension drawings not listed here.
Precautions
Safety Precautions
Power Supply
Do not impose an excessive voltage on the E2AX, 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 E2AX may be damaged.
The E2AX’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 E2AX 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 E2AX 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.
Correct Use
Designing
Power Reset Time
The Proximity Sensor is ready to operate within 100 ms (160ms for
NO+NC -B3 / -C3 types) 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 E2AX within a metal panel, ensure that the
clearances 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.
7
4
56
70
17
M12×1
M12×1
9.2 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
15.1 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°)
E2AX-M12LS04-M1-@@
E2AX-S12LS04-M1-@
E2AX-M18LS08-M1-@@
E2AX-S18LS08-M1-@
E2AX-M30LS15-M1-@@
E2AX-S30LS15-M1-@
E2AX-M12LN08-M1-@@
E2AX-S12LN08-M1-@
E2AX-M18LN16-M1-@@
E2AX-S18LN16-M1-@
E2AX-M30LN30-M1-@@
E2AX-S30LN30-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.)
l
m
n
m
D
d dia.
l
Type Dimension M12 M18
M30
Short
barrel
Long
barrel
Shielded
l0
0
(See note 1.)
0
(See note 2.)
m1224 45
d --- 27 45
D01.5 4
n1827 45
Non-
shielded
l15223040
m2048 7090
d4070 90120
D1522 3040
n4070 90120

D-22 Inductive Sensors
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.
(Unit: mm)
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.
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
The Proximity Sensors are tested intensively on water resistance, but
in order to ensure maximum performance and life expectancy avoid
immersion in water and provide protection from rain or snow.
Operating Environment
Ensure storage and operation of the Proximity Sensor 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, in which case connect the load to the
Proximity Sensor through a relay.
<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.
Type Dimension M12 M18
M30
Short
barrel
Long
barrel
Shielded A 3060110
B 203570
Non-shiel-
ded
A 120 200 300 300
B 100 120 200 300
Type Torque
M12 30 Nm
M18 70 Nm
M30 180 Nm
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. E37E-EN-01B