Inductive Proximity Sensor
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
µm.
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.
E2CA
Ordering Information
Shield
Size
Sensing
g
di t
distance (S )
(Sn)
0.3 to 1.5 mm
0.4 to 2 mm
1 to 5 mm
2 to 10 mm
Response frequency
Linear output
10 kHz
10 kHz
5 kHz
3 kHz
Switching
output
1 kHz
800 Hz
350 Hz
100 Hz
E2CA-XIR5A
E2CA-X2A
E2CA-X5A
E2CA-X10A
Sensor Unit
Amplifier Unit
DC
E2CA-AL4C
E2CA-AL4D
E2CA-AL4E
E2CA-AL4F
AC
E2CA-AN4C
E2CA-AN4D
E2CA-AN4E
E2CA-AN4F
Shielded
M8
M12
M18
M30
1
E2CA
E2CA
Application Examples
Detection of Metals on Other Metals
Counts the number of gear teeth.
Detects mounting screws, riv-
ets, and soldering condition
Detection of Loosened Screws
E2CA Amplifier Unit
E2CA
Improper screwing
Discrimination of Materials
E2CA Amplifier
Unit
E2CA
Brass
E2CA
Amplifier
Unit
K3TS
Output
Iron
K3TS
Loosened
K3TS
Output
Output
Copper
Measurement of Sheet Angles
Measures leaned press molds and elevated boards
Measurement of Sheet Thickness
E2CA
Amplifier
Unit
Measurement of External Dimensions
E2CA Amplifier
Unit
E2CA
Metal object
E2CA E2CA
Metal plate
E2CA Ampli-
fier Unit
K3TS
Output
E2CA Ampli-
fier Unit
K3TS
Sensing
Head
E2CA
Output
K3TS
Alarm output
Discrimination of Shapes
Detects top and bottom sides of metal caps
and surface and back sides of nuts
Measurement of Object Deformations
E2CA Amplifier
Unit
E2CA
E2CA
E2CA
Amplifier
Unit
K3TS
K3TS
Output
Output
2
E2CA
E2CA
Specifications
Sensor model
Item
Amplifier model
Supply voltage (operating voltage range)
E2CA-X1R5A
E2CA-AN4C
100 to 240 VAC
50/60 Hz
(90 to 264 VAC)
60 mA max.
Ferrous metal
0.3 to 1.5 mm (8 x 8 x 1 mm iron)
0.05% FS
±2%
FS
10 kHz (–1 dB)
2% to 5% of rated sensing distance
1 kHz
800 Hz
±1.5%
FS
10 kHz (–1 dB)
0.4 to 2 mm (12 x 12 x 1 mm iron)
E2CA-AL4C
12 to 24 VDC
(10 to 30 VDC),
ripple (p-p): 10%
max.
70 mA max.
100 to 240 VAC
50/60 Hz
(90 to 264 VAC)
60 mA max.
E2CA-X2A
E2CA-AN4D
E2CA-AL4D
12 to 24 VDC
(10 to 30 VDC),
ripple (p-p): 10%
max.
70 mA max.
Current consumption
Sensing object
Sensing range
(with standard sensing object)
Linear output
p
characteristics
h
t i ti
Resolution
Linearity
Response frequency
(see note 1)
Switching output
g
p
characteristics
h
t i ti
Sensitivity
adjustment
j
f
ti
function
Differential travel
Response frequency
(see note 2)
Sensitivity adjustment
(switching output)
Linear output
current
adjustment
Linear output
(see note 3)
Switching output
4 mA
Adjustments of switching output within sensing range
4-mA adjustment at 20% of rated sensing distance
20 mA
20-mA adjustment at rated sensing distance
4 to 20 mA (with permissible load resistance of 0 to 300
Ω)
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)
3 or 5 m (selectable with selector on front panel)
POWER, SPAN (linear range), and OPER (switching output) indicators
Operating: –25°C to 70°C (Sensor) and –10°C to 55°C (Amplifier) with no icing
Operating: 35% to 95% (Sensor) and 35% to 85% (Amplifier)
±10%
FS max. of linear output current at 23°C in the rated ambient operating
temperature range of the Sensor and Amplifier Units
DC power supply model:
±0.5%
FS max. of linear output current at a voltage between
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 MΩ min. (at 500 VDC) between the case and current carry parts
DC power supply model: 1,000 VAC (50/60 Hz) for 1 min between current carry parts
and case
AC power supply model: 1,500 VAC (50/60 Hz) for 1 min between current carry parts
and case
Sensor (destruction): 10 to 55 Hz, 1.5-mm double amplitude for 2 hours each in X, Y, and
Z directions
Amplifier (destruction): 10 to 25 Hz, 2-mm double amplitude for 2 hours each in X, Y, and
Z directions
Sensor (destruction): 500 m/s
2
(approx. 50G) 3 times each in X, Y, and Z directions
Amplifier (destruction): 100 m/s
2
(approx. 10G) 3 times each in X, Y, and Z directions
Sensor: IEC60529 IP67 (JEM IP67g waterproof and oil-proof)
Sensor: 2-conductor, 3-m-long (standard length) or 5-m-long shielded cord
Approx. 40 g
Approx. 250 g
Brass
ABS resin
Polyethylene
Approx. 140 g
Approx. 250 g
Approx. 140 g
Output
Switching output mode
Cord length compensation
Indicators
Ambient temperature
Ambient humidity
Temperature influence
Voltage influence
Insulation resistance
Dielectric strength
Vibration resistance
Shock resistance
Degree of protection
Cord length
Weight
g
(
t
(see note 4)
Material
Sensor
Amplifier
Case
Sensing surface
Cord
3
E2CA
Sensor model
Item
Amplifier model
Supply voltage (operating voltage range)
E2CA-X5A
E2CA-AN4E
100 to 240 VAC
50/60 Hz
(90 to 264 VAC)
60 mA max.
Ferrous metal
1 to 5 mm (18 x 18 x 1 mm iron)
0.05% FS
±1.5%
FS
5 kHz (–1 dB)
2% to 5% of rated sensing distance
350 Hz
100 Hz
±2%
FS
3 kHz (–1 dB)
2 to 10 mm (30 x 30 x 1 mm iron)
E2CA-AL4E
12 to 24 VDC
(10 to 30 VDC),
ripple (p-p): 10%
max.
70 mA max.
100 to 240 VAC
50/60 Hz
(90 to 264 VAC)
60 mA max.
E2CA-X10A
E2CA-AN4F
E2CA
E2CA-AL4F
12 to 24 VDC
(10 to 30 VDC),
ripple (p-p): 10%
max.
70 mA max.
Current consumption
Sensing object
Sensing range (with standard sensing
object)
Linear output
p
h
t i ti
characteristics
Resolution
Linearity
Response frequency
(see note 1)
Switching output
g
p
characteristics
h
t i ti
Sensitivity
adjustment
j
f
ti
function
Differential travel
Response frequency
(see note 2)
Sensitivity adjustment
(switching output)
Linear output
current
adjustment
Linear output
(see note 3)
Switching output
4 mA
Adjustments of switching output within sensing range
4-mA adjustment at 20% of rated sensing distance
20 mA
20-mA adjustment at rated sensing distance
4 to 20 mA (with permissible load resistance of 0 to 300
Ω)
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)
3 or 5 m (selectable with selector on front panel)
POWER, SPAN (linear range), and OPER (switching output) indicators
Operating: –25°C to 70°C (Sensor) and –10°C to 55°C (Amplifier) with no icing
Operating: 35% to 95% (Sensor) and 35% to 85% (Amplifier)
±10%
FS max. of sensing distance at 23°C in the rated ambient operating temperature
range of –10°C and 40°C
DC power supply model:
±0.5%
FS max. of linear output current at a voltage between
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 MΩ min. (at 500 VDC) between the case and current carry parts
DC power supply model: 1,000 VAC (50/60 Hz) for 1 min between current carry parts
and case
AC power supply model: 1,500 VAC (50/60 Hz) for 1 min between current carry parts
and case
Sensor (destruction): 10 to 55 Hz, 1.5-mm double amplitude for 2 hours each in X, Y, and
Z directions
Amplifier (destruction): 10 to 25 Hz, 2-mm double amplitude for 2 hours each in X, Y, and
Z directions
Sensor (destruction): 500 m/s
2
(approx. 50G) 3 times each in X, Y, and Z directions
Amplifier (destruction): 100 m/s
2
(approx. 10G) 3 times each in X, Y, and Z directions
Sensor: IEC60529 IP67 (JEM IP67g waterproof and oil-proof)
Sensor: 2-conductor, 3-m-long (standard length) or 5-m-long shielded cord
Approx. 60 g
Approx. 250 g
Brass
ABS resin
Polyethylene
Approx. 140 g
Approx. 160 g
Approx. 250 g
Approx. 140 g
Output
Switching output mode
Cord length compensation
Indicators
Ambient temperature
Ambient humidity
Temperature influence
Voltage influence
Insulation resistance
Dielectric strength
Vibration resistance
Shock resistance
Degree of Protection
Cord length
Weight
g
(see note 4)
(
t
Material
Sensor
Amplifier
Case
Sensing surface
Cord
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
Ω
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
E2CA
Engineering Data
Sensing Distance vs. Output Current (Typical)
E2CA-X1R5A
Output current (mA)
E2CA-X2A
Output current (mA)
E2CA-X5A
Output current (mA)
E2CA-X10A
Output current (mA)
Sensing distance (mm)
E2CA-X5A
Linearity (% of full scale)
Sensing distance (mm)
E2CA-X10A
Sensing object material: Iron t=1
Material: Iron t=1
Sensing distance (mm)
Sensing distance (mm)
E2CA-X2A
Linearity (% of full scale)
Sensing Object Size vs. Linearity (Typical)
E2CA-X1R5A
Linearity (% of full scale)
Sensing object material: Iron t=1
Material: Iron t=1
Sensing distance X (mm)
Sensing distance X (mm)
Sensing distance X (mm)
Linearity (% of full scale)
Sensing distance X (mm)
E2CA-X10A
Linearity (% of full scale)
Sensing object material:
Iron
10 dia.
Column Diameter vs. Linearity (Typical)
E2CA-X1R5A
Linearity (% of full scale)
Sensing object material:
Iron
8 dia.
E2CA-X2A
Linearity (% of full scale)
f
Material: Iron
6 dia.
E2CA-X5A
Linearity (% of full scale)
f
10 dia.
Material: Iron
20 dia.
f
10 dia.
20 dia.
30 dia.
40 dia.
140 dia.
220 dia.
Flat plate
30 dia.40 dia.
60 dia.
100 dia.
Flat plate
Flat plate
Flat plate
Sensing distance X (mm)
Sensing distance X (mm)
Sensing distance X (mm)
Sensing distance X (mm)
5
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