A-129
E3G
E3G
• Changing to Side-pullout Cable from Vertical-pullout Cable
Design
Load Relay Contact
If a load is used that will spark when it is turned OFF (e.g. a
contactor or valve), the usually closed side may be turned ON
before the usually open side is turned OFF or vice versa. If
both usually open output and usually closed output are used
simultaneously, apply an surge suppressor to the load. (Refer
to OMRON's "Switch/Relay/Connector (PCB Product) Cata-
log" for typical examples of surge suppressors.
Wiring Considerations
Connection/Wiring
The E3G has load short-circuit protection. If load short-circuit
or like has occurred, the output turns OFF. Therefore, recheck
the wiring and switch power on again. This resets the short-
circuit protection circuit. Load short-circuit protection is acti-
vated when a current of 2 times or more of the rated load cur-
rent flows. When using an L load, use the one the inrush
current of which is less than 1.2 times of the rated load cur-
rent.
Mounting
• If Sensors are mounted face-to-face, ensure 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 in-
tensive light, such as sunlight, fluorescent light, or incan-
descent 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 for Sensor installation.
• For case installation, tighten it to the torque of 1.2 Nm max.
Water Resistance
Tighten the operation cover screws and terminal block cover
screws to a torque of 0.3 to 0.5 Nm in order to ensure water
resistivity.
Pro-
ce-
dure
Operation
A
Remove the present cover.
B
Attach the E39-L129-G Terminal Protection Cover for
side-pullout cable.
C
Remove the clamping nut, washer, and rubber bushing
of the E3G. These are used for the side-pullout cable.
D
Attach the rubber bushing and cap provided with the
E39-L129-G to the E3G as replacements.
33mm
63mm
Output
(2) Ta
(3) Tb
(1) Tc
Power supply
(4)
(5)
Rubber bushing
Terminal
protection cover
Washer
Clamping nut
(Recommended example)
Rubber bushing
E39-L129-G Terminal
Protection Cover
Washer
Rubber bushing *
Cap *
Clamping nut
Note: * Provided with the E39-L129-G
(4)
(1)
(2)
(2)
(3)
All E3G Models
F502-EN2-04.book Seite 129 Dienstag, 26. Juli 2005 5:48 17