General Precautions; Precautions For Safe Use - Omron TL-N Series Quick Start Manual

General Precautions

WARNING
These products cannot be used in safety devices for
presses or other safety devices used to protect human
life.
These products are designed for use in applications for
sensing workpieces and workers that do not affect safety.

Precautions for Safe Use

To ensure safety, always observe the following precautions.
●Wiring Considerations
Item
Power Supply Voltage
Do not use a voltage that exceeds the operat-
ing voltage range. Applying a voltage that is
higher than the operating voltage range, or us-
ing an AC power supply (100 VAC or higher)
for a Sensor that requires a DC power supply
may cause explosion or burning.
Load short-circuiting
• Do not short-circuit the load. Explosion or
burning may result.
• The load short-circuit protection function op-
erates when the power supply is connected
with the correct polarity and the power is
within the rated voltage range.
Incorrect Wiring
Be sure that the power supply polarity and oth-
er wiring is correct. Incorrect wiring may cause
explosion or burning.
Connection without a Load
If the power supply is connected directly with-
out a load, the internal elements may explode
or burn. Be sure to insert a load when connect-
ing the power supply.
●Operating Environment
Do not use the Sensor in an environment where there are explosive or combustible gases.
http://www.ia.omron.com/
Proximity Sensors Technical Guide
For precautions on individual products, refer to the Safety Precautions in individual product information.
DC 3-Wire NPN Output Sensors
Brown
Sensor
Black
Blue
DC 3-Wire NPN Output Sensors
Brown
Sensor
Black
Blue
DC 3-Wire NPN Output Sensors
Load
Brown
Sensor
Black
Blue
• DC 2-Wire Sensors
• Even with the load short-circuit protection
function, protection will not be provided if
both the power supply polarity is incorrect
and no load is connected.
Brown
Sensor
Blue
Typical examples
DC 2-Wire Sensors
Load
Sensor
• DC 2-Wire Sensors
• Even with the load short-circuit protection
function, protection will not be provided when
a load short circuit occurs if the power supply
polarity is not correct.
Load
+
(Load short
Sensor
−
circuit)
−
Sensor
+
AC 2-Wire Sensors
Sensor
−
+
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Load
Brown
Blue
Load
(Load short circuit)
Brown
−
+
Blue
Brown
Load
+
−
Blue
Black
Brown
Blue
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