Inductive Proximity Sensor E2CA
g
Linear Output Proximity Sensor with
High-accuracy Resolution
Resolution is 0.05% of the maximum sensing
distance. The model with a sensing distance of
1.2 mm ensures a resolution of 0.6 om.
Models with response frequencies ranging from 10
to 3 kHz are available.
The M30-size model ensures a sensing distance of
10 mm.
Satisfies IEC IP67 requirements, thus detecting the
displacement of metal objects without being
influenced by water and oil spray.
The E2CA has a standard linear output of 4 to
20 mA and connects to the Linear Discrimination
Unit, Digital Panel Meter, and I/O Unit of the
Programmable Controller.
The E2CA’s compact amplifier can be plugged into
surface mounting sockets thus greatly reducing
wiring effort and ensuring easy mounting.
Ordering Information
Shield
Shielded
Size Sensing
distance (Sn)
M8 0.3to1.5mm 10 kHz 1kHz E2CA-XIR5A E2CA-AL4C E2CA-AN4C
M12 0.4to2mm 10 kHz 800 Hz E2CA-X2A E2CA-AL4D E2CA-AN4D
M18 1to5mm 5kHz 350 Hz E2CA-X5A E2CA-AL4E E2CA-AN4E
M30 2to10mm 3kHz 100 Hz E2CA-X10A E2CA-AL4F E2CA-AN4F
Response frequency
Linear output Switching
output
Sensor Unit
Amplifier Unit
DC AC
1
E2CA
Application Examples
E2CA
Detection of Metals on Other Metals
Counts the number of gear teeth.
Detects mounting screws, rivets, and soldering condition
E2CA
Amplifier
Unit
K3TS
Output Output
Measurement of Sheet Angles
Measures leaned press molds and elevated boards
E2CA E2CA
Metal plate
K3TS
Output
E2CA Amplifier Unit
E2CA Amplifier Unit
Detection of Loosened Screws
E2CA Amplifier Unit
E2CA E2CA
Improper screwing
K3TS
Loosened
Measurement of Sheet Thickness
K3TS
Sensing
Head
E2CA
Output
E2CA
Amplifier
Unit
Discrimination of Materials
E2CA Amplifier
Unit
Iron
Copper
K3TS
Output
Brass
Measurement of External Dimensions
E2CA Amplifier
Unit
K3TS
Alarm output
E2CA
Metal object
Discrimination of Shapes
Detects top and bottom sides of metal caps
and surface and back sides of nuts
E2CA
E2CA
Amplifier
Unit
K3TS
Output
Measurement of Object Deformations
E2CA Amplifier
Unit
K3TS
Output
E2CA
2
E2CA
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Specifications
E2CA
Sensor model
Item Amplifier model E2CA-AN4C E2CA-AL4C E2CA-AN4D E2CA-AL4D
Supply voltage (operating voltage range) 100 to 240 VAC
Current consumption
Sensing object Ferrous metal
Sensing range
(with standard sensing object)
Linear output
characteristics
Switching output
characteristics
Sensitivity
adjustment
function
Output
Switching output mode Normally open or normally closed (selectable with selector on front panel)
Cord length compensation 3 or 5 m (selectable with selector on front panel)
Indicators POWER, SPAN (linear range), and OPER (switching output) indicators
Ambient temperature Operating: --25flCto70flC (Sensor) and --10flCto55flC (Amplifier) with no icing
Ambient humidity Operating: 35% to 95% (Sensor) and 35% to 85% (Amplifier)
Temperature influence ‒10% FS max. of linear output current at 23flC in the rated ambient operating
Voltage influence DC power supply model: ‒0.5% FS max. of linear output current at a voltage between
Insulation resistance
Dielectric strength DC power supply model: 1,000 VAC (50/60 Hz) for 1 min between current carry parts
Vibration resistance Sensor (destruction): 10 to 55 Hz, 1.5-mm double amplitude for 2 hours each in X, Y, and
Shock resistance Sensor (destruction): 500 m/s2(approx. 50G) 3 times each in X, Y, and Z directions
Degree of protection Sensor: IEC60529 IP67 (JEM IP67g waterproof and oil-proof)
Cord length
Weight
(see note 4)
Material
Resolution 0.05% FS
Linearity ‒2% FS ‒1.5% FS
Response frequency
(see note 1)
Differential travel 2% to 5% of rated sensing distance
Response frequency
(see note 2)
Sensitivity adjustment
(switching output)
Linear output
current
adjustment
Linear output
(see note 3)
Switching output 100 mA max. transistor photocoupler output at 40 VDC with max. residual voltage of 2 V
Sensor Approx. 40 g
Amplifier Approx. 250 g Approx. 140 g Approx. 250 g Approx. 140 g
Case
Sensing surface
Cord Polyethylene
4mA 4-mA adjustment at 20% of rated sensing distance
20 mA 20-mA adjustment at rated sensing distance
50/60 Hz
(90to264VAC)
60 mA max. 70 mA max. 60 mA max. 70 mA max.
0.3 to 1.5 mm (8 x 8 x 1 mm iron) 0.4to2mm(12x12x1mmiron)
10 kHz (--1 dB) 10 kHz (--1 dB)
1kHz 800 Hz
Adjustments of switching output within sensing range
4 to 20 mA (with permissible load resistance of 0 to 300 Y)
temperature range of the Sensor and Amplifier Units
80% and 120% of the rated power supply voltage
AC power supply model: ‒0.5% FS max. of linear output current at a voltage between
90% and 110% of the rated power supply voltage
50 MY min. (at 500 VDC) between the case and current carry parts
and case
AC power supply model: 1,500 VAC (50/60 Hz) for 1 min between current carry parts
and case
Z directions
Amplifier (destruction): 10 to 25 Hz, 2-mm double amplitude for 2 hours each in X, Y, and
Z directions
Amplifier (destruction): 100 m/s2(approx. 10G) 3 times each in X, Y, and Z directions
Sensor: 2-conductor, 3-m-long (standard length) or 5-m-long shielded cord
Brass
ABS resin
E2CA-X1R5A E2CA-X2A
12 to 24 VDC
(10to30VDC),
ripple (p-p): 10%
max.
100 to 240 VAC
50/60 Hz
(90to264VAC)
12 to 24 VDC
(10to30VDC),
ripple (p-p): 10%
max.
3
E2CA
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E2CA
Sensor model
Item Amplifier model E2CA-AN4E E2CA-AL4E E2CA-AN4F E2CA-AL4F
Supply voltage (operating voltage range) 100 to 240 VAC
Current consumption 60 mA max. 70 mA max. 60 mA max. 70 mA max.
Sensing object Ferrous metal
Sensing range (with standard sensing
object)
Linear output
characteristics
Switching output
characteristics
Sensitivity
adjustment
function
Output
Switching output mode
Cord length compensation 3 or 5 m (selectable with selector on front panel)
Indicators POWER, SPAN (linear range), and OPER (switching output) indicators
Ambient temperature
Ambient humidity Operating: 35% to 95% (Sensor) and 35% to 85% (Amplifier)
Temperature influence ‒10% FS max. of sensing distance at 23flC in the rated ambient operating temperature
Voltage influence DC power supply model: ‒0.5% FS max. of linear output current at a voltage between
Insulation resistance 50 MY min. (at 500 VDC) between the case and current carry parts
Dielectric strength DC power supply model: 1,000 VAC (50/60 Hz) for 1 min between current carry parts
Vibration resistance Sensor (destruction): 10 to 55 Hz, 1.5-mm double amplitude for 2 hours each in X, Y, and
Shock resistance Sensor (destruction): 500 m/s2(approx. 50G) 3 times each in X, Y, and Z directions
Degree of Protection
Cord length Sensor: 2-conductor, 3-m-long (standard length) or 5-m-long shielded cord
Weight
(see note 4)
Material
Resolution 0.05% FS
Linearity ‒1.5% FS ‒2% FS
Response frequency
(see note 1)
Differential travel 2% to 5% of rated sensing distance
Response frequency
(see note 2)
Sensitivity adjustment
(switching output)
Linear output
current
adjustment
Linear output
(see note 3)
Switching output
Sensor Approx. 60 g Approx. 160 g
Amplifier Approx. 250 g Approx. 140 g Approx. 250 g Approx. 140 g
Case Brass
Sensing surface ABS resin
Cord Polyethylene
4mA
20 mA 20-mA adjustment at rated sensing distance
50/60 Hz
(90to264VAC)
1to5mm(18x18x1mmiron) 2to10mm(30x30x1mmiron)
5 kHz (--1 dB) 3 kHz (--1 dB)
350 Hz 100 Hz
Adjustments of switching output within sensing range
4-mA adjustment at 20% of rated sensing distance
4 to 20 mA (with permissible load resistance of 0 to 300 Y)
100 mA max. transistor photocoupler output at 40 VDC with max. residual voltage of 2 V
Normally open or normally closed (selectable with selector on front panel)
Operating: --25flCto70flC (Sensor) and --10flCto55flC (Amplifier) with no icing
range of --10flC and 40flC
80% and 120% of the rated power supply voltage
AC power supply model: ‒0.5% FS max. of linear output current at a voltage between
90% and 110% of the rated power supply voltage
and case
AC power supply model: 1,500 VAC (50/60 Hz) for 1 min between current carry parts
and case
Z directions
Amplifier (destruction): 10 to 25 Hz, 2-mm double amplitude for 2 hours each in X, Y, and
Z directions
Amplifier (destruction): 100 m/s2(approx. 10G) 3 times each in X, Y, and Z directions
Sensor: IEC60529 IP67 (JEM IP67g waterproof and oil-proof)
E2CA-X5A E2CA-X10A
12 to 24 VDC
(10to30VDC),
ripple (p-p): 10%
max.
100 to 240 VAC
50/60 Hz
(90to264VAC)
12 to 24 VDC
(10to30VDC),
ripple (p-p): 10%
max.
Note: 1. This is a frequency decreasing the level of linear output current by 1 dB.
2. This is a response frequency measured in accordance with CENELEC standards.
3. The maximum load impedance of the E2CA-AL4 is 150 Y at a supply voltage of 12 V.
4. The weight includes the 3-m-long cord. The weights of the Amplifiers do not include connecting sockets.
4
E2CA
Engineering Data
Sensing Distance vs. Output Current (Typical)
E2CA-X1R5A
E2CA-X2A E2CA-X5A E2CA-X10A
E2CA
Output current (mA)
Sensing distance (mm)
Output current (mA)
Sensing distance (mm)
Sensing Object Size vs. Linearity (Typical)
E2CA-X1R5A
Sensing object material: Iron t= 1
Linearity (% of full scale)
Sensing distance X (mm)
E2CA-X2A E2CA-X5A E2CA-X10A
Material: Iron t=1
Linearity (% of full scale)
Sensing distance X (mm)
Column Diameter vs. Linearity (Typical)
E2CA-X1R5A
Sensing object material:
Iron
Linearity (% of full scale)
f
8dia.
10 dia.
Flat plate
E2CA-X2A E2CA-X5A E2CA-X10A
f
Material: Iron
Linearity (% of full scale)
10 dia.
30 dia.
6dia.
20 dia.
40 dia.
Flat plate
Output current (mA)
Sensing distance (mm)
Material: Iron t=1
Linearity (% of full scale)
Sensing distance X (mm)
Material: Iron
30 dia.
60 dia.
Linearity (% of full scale)
10 dia.
40 dia.
100 dia.
Flat plate
20 dia.
Output current (mA)
Sensing distance (mm)
Sensing object material: Iron t= 1
Linearity (% of full scale)
Sensing distance X (mm)
Sensing object material:
Iron
f
140 dia.
Linearity (% of full scale)
Flat plate
220 dia.
Sensing distance X (mm)
Sensing distance X (mm)
Sensing distance X (mm)
Sensing distance X (mm)
5
E2CA
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Nomenclature
Selector and Adjuster Settings
(1) Operation Mode Selector
OUTPUT
NO
OUTPUT
NO
The switching output transistor turns ON
NC
when there is sensing object detection.
The switching output transistor turns ON
NC
when there is no sensing object detection.
(1) Operation mode selector
(2) Cord length compensation selector
POWER indicator (red LED)
ON when power is supplied to the E2CA.
OPER indicator
ON when the switching output of the POWER
indicator is detected.
(ON when detected, OFF when not detected)
SPAN indicator
Indicates the linear range of green
LED output current.
Linear output current adjuster (20 mA)
E2CA
SENSITIVITY adjuster
Used to adjust the sensing distance of
switching output.
(2) Cord Length Compensation Selector
Settheselectorto3mor5maccordingtothe
length of the Sensor cord in use.
Linear Output Adjustment (LINEARITY Adjuster)
Step
Positioning ---
LINEARITY
---
adjuster
Adjustment
procedure
Connect an ammeter across terminals 1
and 2.
Note: This illustration shows the Sensor
Shielded cord
E2CA-Aj4j
Amplifier Unit
P2CF-11
Front-connecting Socket
Unit connected to the Amplifier Unit
with the P2CF-11Front-connecting
Socket mounted.
1 2 3 Remarks
Switching
output
(photocoupler
P2CF-11
output)
CABLE
3m
3m
20% of rated
sensing distance
5m
CABLE
5m
Standard object
4mA
Place the standard
object at 20% of the
rated sensing distance
away from the Sensor
Unit.Turnthe4mA
LINEARITY adjuster
slowly clockwise (the
output current is
increased) or
counterclockwise (the
output current is
decreased) to set the
output current to 4 mA.
(SPAN indicator is ON.)
Linear output current adjuster (4 mA)
A cord length of 3 m is selected.
A cord length of 5 m is selected.
---
Rated sensing distance
Standar
object
---
20 mA
Fasten the standard
object at the rated
sensing distance. Turn
the 20-mA LINEARITY
adjuster slowly
clockwise (the output
current is increased) or
counterclockwise (the
output current is
decreased) to set the
output current to 20 mA.
(SPAN indicator is ON.)
To further
improve the
adjustment
accuracy, set
again the
position of the
standard object
in the order of
steps 2 and 3.
Perform minute
adjustment of
the output
current.
6
E2CA
E2CA
Sensitivity (Distance) Adjustment
Detecting
condition
SENSITIVITY
adjuster
Standard target (See Note at below right.)
Low High
Standard object
Compensation of Cord Length Difference
Set the CABLE selector to the required position according to the
length of the cord being used (3 m or 5 m).
CABLE
3m 5m
CABLE
3m 5m
SENSITIVITY
Adjustment
procedure
Place the standard object at the specified
position. Slowly turn the SENSITIVITY
adjuster clockwise (toward “High”) and stop
it when the OPER. indicator illuminates.
Move the object to confirm that the OPER.
indicator is ON when the object is at the
specified position and that it is OFF when
the object is moved away from that
position.
Operation
Output Circuit Timing Chart
(Rated distance)
Distance
of object
SPAN indicator
Linear output
(Set distance)
Main
circuit
Comparator
100 mA max.
2.2 Y
47 V
Linear output:
4to20mA
Switching output (+)
3-m cord
5-m cord
100 %
20 %
ON
OFF
20 mA
4mA
Switching output (--)
0V
*SENSITIVITY adjuster
Connections
Connections between Sensor Units and Amplifier Units
E2CA-AL4j+Sensor Unit
Sensor Unit
E2CA-AL4j Amplifier unit
P2CF-11 Front-connecting Socket
Shielded cord
White Blue
0V 12to
24 VDC
0V (+)
Linear output
E2CA-AN4j+Sensor Unit
Sensor Unit
Switching output
(Transistorized
photocoupler output)
E2CA/AN4j Amplifier unit
P2CF-11 Front-connecting Socket
Mode selector
Transistor output
(switching output)
OPER. indicator
NO
NC
ON
OFF
ON
OFF
Shielded cord
White Blue
0V
Linear output100 to 240 VAC
Switching output
(Transistorized
photocoupler
output)
(+)
Note: The above illustrations show the terminal arrangement viewed from the rear of the socket, which is coupled to the Amplifier Unit.
7
E2CA
E2CA
Connection of Resistive Load:
E2CA-AN4j+Sensor Unit
Shielded cord
Blue
White
E2CA-AN4j Amplifier
P2CF-11 Front-connecting
Socket
100 to 200 VAC
0V
(+)
Linear output
Comparator,
microproces-
sor, etc.
R
(see note)
Connection to Z4W-DD1C
Sensor Unit (E2CA)
White
E2CA-AN4j Amplifier
Note: Resistance R when E2CA-AL4 is used: 300 Y max. at 24 V/150 Y max. at 12 V
Resistance R when E2CA-AN4 is used: 300 Y max.
Connection to K3TS-SD12
Sensor Unit
White
Shielded cord
Blue
Connection to K3TX-AD22
Sensor Unit
Shielded cord
Blue
Shielded cord
White
Blue
4to20mA
0V
Synchronous sensor
4to20mA 0V
+12 V 0 V
Z4W-DD1C
100 to 240 VAc,
50/60 Hz
Blue
Output
Black
+12 V
Brown
100 mA,
30 VDC max.
E2CA-AL4j Amplifier
P2CF-11 Front-connecting Socket
12 to 24 VDC
CQM1 Linear Sensor Interface Unit
Connection to CQM1-LSE
E2CA-AL4j Amplifier
P2CF-11 Front-connecting Socket
Sensor
Shielded cord
White Blue
4to20mA
K3TS
E2CA-AL4j Amplifier
P2CF-11 Front-connecting Socket
K3TX
12 to 24 VDC
CQM1-LSE01
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E2CA
Dimensions
Note: All units are in millimeters unless otherwise indicated.
Sensor Units
E2CA-X1R5A E2CA-X2A
E2CA
2.8 dia.
Shielded cord
Standard length: 3 m
E2CA-X5A E2CA-X10A
4.1 dia.
Shielded cord
Standard length: 3 m
Amplifier Units
E2CA-AjC/F
E2CA-AjD/E
48 x 48
2.8 dia.
Shielded cord
Standard length: 3 m
5.5 dia.
Shielded cord
Standard length: 3 m
Mounting Hole Dimensions
Model F (mm)
E2CA-X1R5A
E2CA-X2A
E2CA-X5A
E2CA-X10A
+0.5
0
8.5 dia.
+0.5
0
12.5 dia.
+0.5
0
18.5 dia.
+0.5
0
30.5 dia.
44.8x44.8
9
E2CA
Accessories (Order Separately)
Mounting Fixture (Y92E-B Series)
Four types of exclusive resin mounting fixtures are optionally available.
Select the type suited to the dimensions of the Sensor.
Y92F-30 Adapter for Flush Mounting Y92A-48B Protective Cover
Mounting panel
Y92F-30 Adapter for
flush mounting
P3GA-11 Back-connecting Socket
The protective hard plastic cover shields the front
panel, particularly the setting section, from dust,
dirt, and water drip.
E2CA
Y92A-48B
Connecting Sockets for E2CA-Aj4j
P2CF-11 Front-connecting Socket
(Track Mounted)
Eleven, M3.5 & 7.5
sems screws
70 max.
Two, 4.5-dia. hole
50 max.
P3GA-11 Back-connecting Socket
27 dia.
31.2 max.
Terminal Arrangement
(Top View)
Mounting Holes
Two, 4.5-dia. holes
Note: The Socket can be
mounted to a track.
Terminal Arrangement
(Bottom View)
10
45
45
4.5 16.3
25.6
6.2
E2CA
E2CA
PL11 Back-connecting Socket
(Solder Terminal)
51 max.
35 max.
30 dia.
Two, 2 di a.
Approx. 20.5
Terminal Arrangement
(Bottom View)
Precautions
Correct Use
Mounting
Do not tighten the nut of the Sensor with excessive force. Be sure to
use the washer with the nut when tightening.
Mounting Holes
Two, 3.5 dia. or M3
socket mounting holes
Two, 3.5 dia. or M3
socket mounting holes
31-dia.
hole
Mutual Interference
If the Sensors are mounted in parallel or face-to-face, be sure to
keep the clearance between the Sensors as specified in the table.
Model Tightening torque
E2CA-X1R5A
E2CA-X2A
E2CA-X5A
E2CA-X10A
1.96 N S m(20kgfS cm)
5.9 N S m(60kgfS cm)
14.7 N S m (150 kgf S cm)
39.2 N S m (400 kgf S cm)
Note: The above tightening torque applies when a toothed wash-
er is used.
Effects of Surrounding Metal
Be sure to separate the Sensor from surrounding metal objects as
shown in the following illustration if the Sensor is embedded.
ddia.
Model/Distance
d D m
E2CA-X1R5A 0 (8) 0 4.5
E2CA-X2A 0 (12) 0 6
E2CA-X5A 0 (18) 0 15
E2CA-X10A 0 (30) 0 30
Note:
The values for “d” indicate distances for the outer diameter
of the shielded models.
Model/Distance A B
E2CA-X1R5A 30 20
E2CA-X2A 30 20
E2CA-X5A 50 35
E2CA-X10A 100 75
Sensor Cord
The Sensor cord must be either 3 or 5 m. Do not cut or extend the
Sensor cord, otherwise the E2CA may not provide the specified output.
Mounting the Amplifier Unit
When mounting more than one amplifier vertically, it is recommended that a margin of approximately 20 mm above and below the
Socket be provided in consideration of the space required by the
hook of the Socket.
Hook
Duct
P2CF-11
Panel
11
E2CA
E2CA
Enclosed Mounting
If the Y92F-30 Adapter is used, insert the E2CA into the square hole
from the front side of the panel and slide the Y92F-30 onto the E2CA
from the rear side of the E2CA. Then press the Y92F-30 so that the
space between the Y92F-30 and the panel is reduced as much as
possible. Finally, secure the Y92F-30 with screws.
Panel
Y92F-30 Adapter
P3G-11 Back-mounting Socket
Removing the Amplifier Unit
If the Y92F-30 is used, loosen the screws of the Y92F-30, spread
out the hooks, and remove the Y92F-30.
Others
The accuracy of the E2CA will vary with the on-site environment.
The resolution, temperature characteristics, and voltage characteristic linearity are especially affected. Therefore, keep the on-site environment as suitable for the E2CA as possible.
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. D77-E1-1 In the interest of product improvement, specifications are subject to change without notice.
OMRON Corporation
Industrial Sensors Division
Sensing Devices and Components Division H.Q.
28th Fl., Crystal Tower Bldg.
1-2-27, Shiromi, Chuo-ku,
Osaka 540-6028 Japan
Phone: (81)6-949-6012 Fax: (81)6-949-6021
12
Printed in Japan
0398-0.5M (0398) a
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