Datasheet

3
E2K-F
I/O Circuit Diagrams
Safety Precautions
Refer to Warranty and Limitations of Liability.
This product is not designed or rated for ensuring
safety of persons either directly or indirectly.
Do not use it for such purposes.
Do not use this product under ambient conditions that exceed the
ratings.
● Design
Sensing Object Material
The E2K-F can detect almost any type of object. The sensing distance
of the E2K-F, however, will vary with the electrical characteristics of
the object, such as the conductance and inductance of the object, and
the water content and capacity of the object. The maximum sensing
distance of the E2K-F will be obtained if the object is made of
grounded metal. There are objects that cannot be detected indirectly.
Therefore, be sure to test the E2K-F in a trial operation with the
objects before using the E2K-F in actual applications.
Influence of Surrounding Metal
Separate the E2K-F from surrounding metal as shown below.
Mutual Interference
When mounting more than one E2K-F face-to-face or side-by-side,
separate them as shown below.
Effects of a High-frequency Electromagnetic Field
The E2K-F may malfunction if there is an ultrasonic washer, high-
frequency generator, transceiver, portable telephone, or inverter
nearby.
For major measures, refer to Noise of Warranty and Limitations of
Liability for Photoelectric Sensors.
● Wiring
The characteristics of the E2K-F will not change if the cable is
extended. Extending the cable, however, will result in a voltage drop,
so do not extend the length past 200 m.
● Mounting
Sensitivity Adjustment
For information on the sensitivity adjustment, refer to Technical Guide
for Operation for information for Proximity Sensor.
Timing
chart
Output
circuit
WARNING
Present
Not present
ON
OFF
ON
OFF
Detection
indicator (red)
Sensing
object
Output transistor
(load)
NO Models NC Models
+V
0 V
100 Ω
*
Brown
Black
Output
Blue
Load
Proximity
Sensor
main
circuit
* Load current: 100 mA max.
Precautions for Correct Use
30 mm
45 mm60 mm
Metal
object
Metal
object
Metal
object
50 mm
50 mm
40 mm
Close mounting possible Face-to-face mounting