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

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

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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