Proximity Sensors Technical Guide
Note: When AND/OR connections are used with Proximity Sensors, the effects of erroneous pulses or leakage current may prevent use. Verify that there are no
problems before use.
Extending Cable Length
The cable of a Built-in Amplifier Sensor can be extended to a
maximum length of 200 m with each of the standard cables
(excluding some models).
For Separate Amplifier Sensors (E2C-EDA, E2C, E2J, E2CY), refer
to the specific precautions for individual products.
Bending the Cable
If you need to bend the cable, we recommend a bend radius that is at
least 3 times the outer diameter of the cable (with the exception of
coaxial and shielded cables).
Cable Tensile Strength
In general, do not subject the cable to a tension greater than that
indicated in the following table.
Note: Do not subject a shielded cable or coaxial cable to tension.
Separating High-voltage Lines
Using Metal Conduits
If a power line is to be located near the Proximity Sensor cable, use a
separate metal conduit to prevent malfunction or damage. (Same for
DC models.)
Example of Connection with S3D2 Sensor Controller
Using the S3D2 Sensor Controller
Connecting to a Relay Load
Note: DC 2-Wire Sensors have a residual voltage of 3 V. Check the operating
voltage of the relay before use.
The residual voltage of the E2E-XD-M1J-T is 5 V.
Model
Type of
connection
Connection
Description
DC 3-wire
AND (series
connection)
Keep the number of connected Sensors (N) within the range of the following
equation.
iL + (N - 1)
×
i
≤
Upper limit of Proximity Sensor control output
V
S
- N
×
V
R
≥
Operating load voltage
Note: When an AND circuit is connected, the operation of Proximity Sensor B
causes power to be supplied to Proximity Sensor A, and thus erroneous
pulses (approximately 1 ms) may be generated in A when the power is
turned ON. For this reason, take care when the load has a high
response speed because malfunction may result.
OR (parallel
connection)
For Sensors with a current output, a minimum of three OR connections is pos-
sible. Whether or not four or more connections is possible depends on the
model.
(B)
(A)
Vs
i
+
+
OUT
OUT
-
-
iL
i
Load
Example: A maximum of two
Sensors can be used when an
MY (24-VDC) Relay is used for
the load.
N : Number of Sensors that can be con-
nected
V
R
: Residual output voltage of Sensor
V
S
: Power supply voltage
i : Current consumption of Sensor
iL: Load current
-
OUT
OUT
-
+
+
Vs
Load
Cable diameter
Tensile strength
Less than 4 mm
30 N max.
4 mm min.
50 N max.
DC 2-Wire Sensors
DC 3-Wire Sensors
5
2
4
1
6
3
11
8
10
7
12
9
Brown OUT
Blue 0 V
S3D2
Operation can be reversed with the signal input
switch on the S3D2.
Blue
Brown
24 VDC
X
5
2
4
1
6
3
11
8
10
7
12
9
Black OUT
Blue 0 V
Brown +12 V
S3D2
Operation can be reversed with the signal input
switch on the S3D2.
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