E3G

9

● Wiring

• The cable with an external diameter of 6 to 8 mm is recommended.

• Be sure to attach the cover with screws securely in order to

maintain the water- and dust-resistive properties of the product.

The size of the conduit opening is PF1/2 in accordance with JIS

B0202.

• Do not tighten the Terminal Protection Cover with wires pinched

between the Sensor and the cover in order to maintain the water-

and dust-resistive properties of the product.

• Changing to Side-pullout Cable from Vertical-pullout Cable

● Designing

Load Relay Contact

If E3G is connected to a load with contacts that spark when the load

is turned OFF (e.g., a contactor or valve), the normally-closed side

may be turned ON before the normally-open side is turned OFF or

vice-versa. If both normally-open output and normally-closed output

are used simultaneously, apply an surge suppressor to the load.

Refer to OMRON’s PCB Relays Catalog (X33) for typical examples of

surge suppressors.

● Wiring

Connecting and Wiring

The E3G has a built-in function to protect the E3G from load

shortcircuiting. If load shortcircuiting results, the output will be turned

OFF. In that case, check the wiring and turn ON the E3G again so that

the short-circuit protection circuit will be reset. This function will

operate if the output current flow is at least 2.0 times the rated load

current. If a capacitive load is connected to the E3G, make sure that

the inrush current does not exceed 1.2 times the rated load current.

● Mounting

Mounting Conditions

• If Sensors are mounted face-to-face, make sure that no optical

axes cross each other. Otherwise, mutual interference may result.

• Be sure to install the Sensor carefully so that the directional angle

range of the Sensor will not be directly exposed to intensive light,

such as sunlight, fluorescent light, or incandescent light.

• Do not strike the Photoelectric Sensor with a hammer or any other

tool during the installation of the Sensor, or the Sensor will loose its

water-resistive properties.

• Use M4 screws to mount the Sensor.

• When mounting the case, make sure that the tightening torque

applied to each screw does not exceed 1.2 N·m.

● Water Resistance

Tighten the operation cover screws and terminal block cover screws

to a torque of 0.3 to 0.5 N·m in order to ensure water resistivity.

E3G-M

@(T)

Proce-

dure

Operation

1

Remove the present cover.

2

Attach the E39-L129 Terminal Protection Cover for side-

pullout cable.

3

Remove the clamping nut, washer, and rubber bushing of

the E3G. These are used for the side-pullout cable.

4

Attach the rubber bushing and cap provided with the

E39-L129 to the E3G as replacements.

33 mm

63 mm

Output

2Ta

3Tb

1Tc

Power supply

4

5

Rubber bushing*

Terminal

protection cover

Washer*

Clamping nut*

*Not provided with UL-compliant (-US) models.

For UL certified products (-US type), use UL-

Listed plastic cable gland.

The tightening torque is 3 N.m or less.

Recommended Example

4

1

2

2

3

Rubber bushing

E39-L129 Terminal

Protection Cover

Washer

Rubber bushing*

Cap*

Clamping nut

*Provided with the E39-L129.

All E3G Models