E2KC25MY1 Datasheet, PDF (10/18 Pages) Omron Electronics LLC – Adjustable Long-distance Sensor

Proximity Sensors Technical Guide
General Precautions For precautions on individual products, refer to the Safety Precautions in individual product information.
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
DC 3-Wire NPN Output Sensors
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.
Brown
Load
Sensor
Black
Blue
Typical examples
DC 2-Wire Sensors
Load
Brown
Sensor
Blue
Load short-circuiting
DC 3-Wire NPN Output Sensors
• 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.
Brown
Load
Sensor
Black
(Load short ⁺
circuit)
−
Blue
Incorrect Wiring
DC 3-Wire NPN Output Sensors
Be sure that the power supply polarity and oth-
Load
er wiring is correct. Incorrect wiring may cause
explosion or burning.
Brown
−
Sensor
Black
+
Blue
• 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 circuit)
Brown
−
Sensor
+
Blue
Brown
Load
+
Sensor
Blue
−
Black
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.
• 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.
AC 2-Wire Sensors
Brown
Sensor
Blue
Brown
Sensor
−
Blue
+
●Operating Environment
Do not use the Sensor in an environment where there are explosive or combustible gases.
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