Correct Use - Omron E3M-V Datasheet

Precautions
Observe the following precautions to ensure safety.
• Do not use the Sensor in locations subject to flammable or explo-
sive gases.
• Do not use the Sensor in water or conductive solution.
• Do not disassemble, repair, or modify the Sensor.
• Use the Sensor under proper power supply specifications such as
the use of AC or DC power supply.
• Do not apply any voltage or current exceeding the rated level.
• Be careful with the power supply polarities and wire correctly.
• Connect the loads correctly.
• Do not short-circuit both ends of loads.

Correct Use

Installation
Power Reset Time
Since the E3M-V is ready to detect objects from 100 ms max. after
the E3M-V is turned ON, operate the remaining devices 100 ms after
the Sensor is turned ON. If power is supplied to the E3M-V and the
load independently, be sure to turn on the E3M-V first.
Power OFF
The E3M-V may output a single pulse when the control power supply
is turned OFF. If the E3M-V is connected to a timer or counter to
which power is supplied from an independent power supply, the E3M-
V will be more likely to output a single pulse when the control power
supply is turned OFF. Therefore, supply power to the timer or counter
from the same power supply for the E3M-V.
Power Supply Type
No full-wave or half-wave rectified power supplies can be connected
to the E3M-V.
Power Supply Connection
Be sure to ground the FG (frame ground) and G (ground) terminals if
a switching regulator is connected to the E3M-V, otherwise the E3M-
V may malfunction due to the switching noise of the switching regula-
tor.
Wiring
Cable
The cable can be extended up to 100 m provided that the thickness
of the cable is 0.3 mm2 minimum.
Repeated Cable Bending
The cable must not be bent repeatedly.
High-tension Lines
The power supply lines of the Sensor must not be wired alongside
power lines or high-tension lines in the same conduit, otherwise the
Sensor may become damaged or malfunction due to induction noise
that may be generated from the power lines or high-tension lines.
Route the lines separately or in a single conduit.
Cable Pulling Force
Do not pull cables with pulling forces exceeding 50N.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
Cat. No. E280-E2-01A-X
A-144
In the interest of product improvement, specifications are subject to change without notice.
Mounting
Screw Tightening
Make sure that the casing is tightened to a maximum torque of 1.2 N
o m.
Mounting Direction
When Sensors are mounted to face each other, make sure to adjust
the optical axes so that the Sensors will not be mutually interfered.
Others
EEPROM Write Error
An EEPROM error may result if power supply to the Sensor fails or
the Sensor is influenced by static noise, in which case the threshold
level indicators will flash. Perform the teaching and threshold level
setting of the E3M-V again.
M12 Metal Connector
Make sure to connect or disconnect the metal connector after turning
off the E3M-V.
Make sure to hold the connector cover when connecting or discon-
necting the metal connector.
Tighten the metal connector securely by hand. Do not use any tool,
such as pliers, otherwise the metal connector may be damaged.
If the metal connector is not tightened securely, the metal connector
may be disconnected by vibration and the proper degree of protection
of the E3M-V may not be maintained.
Standard Photoelectric Sensors