E3G-MR19-US Datasheet, PDF (9/12 Pages) Omron Electronics LLC – Long-distance Photoelectric Sensor with Built-in Amplifier

E3G
E3G-M@(T)
● 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.
Recommended Example
Terminal
protection cover
Rubber bushing*
63 mm
4
5
1Tc
2Ta Output
3Tb
Power supply
Washer*
Clamping nut*
33 mm
*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.
• Changing to Side-pullout Cable from Vertical-pullout Cable
1
2
E39-L129 Terminal
Protection Cover
Rubber bushing
Washer
2
Clamping nut
All E3G Models
● 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.
3
4
Rubber bushing*
Cap*
*Provided with the E39-L129.
Proce-
dure
1
2
3
4
Operation
Remove the present cover.
Attach the E39-L129 Terminal Protection Cover for side-
pullout cable.
Remove the clamping nut, washer, and rubber bushing of
the E3G. These are used for the side-pullout cable.
Attach the rubber bushing and cap provided with the
E39-L129 to the E3G as replacements.
9