Datasheet

5
EE-SX3173/4173-P Series
Mounting
1. This product is intended to be built into devices so no special
measures have been taken against external light interference.
When using a DC light sensor in an area exposed to an
incandescent lamp or other external light interference, it should be
mounted so that the effects of external light interference can be
avoided.
2. Mount the sensor securely on a flat surface.
3. Use M3 screws to secure the Photomicro Sensor (use together
with spring washers and 6-mm-diameter flat washers to prevent
screws from loosening). Use a tightening torque of 0.54 N·m max.
4. Take care that nothing comes into contact with the sensing
element of the sensor. Damage to the sensing element will result
in poor performance.
5. Before using the sensor, check to make sure that it has not
become loose due to vibration or shock.
Wiring
Surge Prevention
1. If there is a surge in the power supply, try connecting a Zener
diode (ZD with a voltage of 30 to 35 V) or a capacitor (with a
capacitance of 0.1 to 1 µF), depending on the operating
environment. Use the sensor only after confirming that the surge
has been removed.
2. Do not use a small inductive load, such as a relay.
3. If photomicrosensor wires are placed in the same tubes or ducts
as high-voltage lines or power lines, induction may cause
malfunction or damage. Either wire the photomicrosensor
separately or place the wires in separate tubes.
4. Make sure that connectors (commercially available) are securely
locked.
Voltage Output
A sensor with an open collector output can be connected to a counter
with a voltage input by connecting a resistor between the power
supply and output. Select a resistor with reference to the following
example. The resistance of the resistor is normally 4.7 kΩ. The
wattage of the resistor is 0.5 W at a power supply voltage of 24 V.
1. A sensor with an open collector output can be connected to a
counter with a voltage input by connecting a resistor between the
power supply and output. Select a resistor with reference to the
following example. The resistance of the resistor is normally 4.7
kΩ. The wattage of the resistor is 0.5 W at a power supply voltage
of 24 V.
Example: EE-SX4173-P3-Z
When inserting a load resistor (R = 5.6 kΩ) in the following device
Counter Specifications
The high and low levels are found using the following formulas. The
input device specifications must satisfy both formulas.
High level:
Low level:
Input voltage V
L ≤ 0.3 V
(Low-level output voltage V
OL at an output current (Iout) of 16 mA)
Note: Refer to the ratings of the sensor for the residual voltage of the
load current.
Precautions for Correct Use
Vcc
Z
D
Z D : Zener diode
0.1 to 1 µF
OUT
GND
Vcc
D
Relay
OUT
GND
+
-
Input impedance 5.6 kΩ
Voltage judged as high level (input ON) 4.5 to 30 VDC
Voltage judged as low level (input OFF) 0 to 2 VDC
Vcc
Sensor
Load R
Insert resistor
OUT
GND
GND
+24 V
Power supply
Input terminal (CP)
Counter (Voltage input type)
Z
(Input
impedance)
Approx. 5.6 kΩ
13 V 24 V
5.6 k4.7 k
5.6 k
Vcc
ZR
Z
V
H
= ×
+
=
+
= Input voltage
≤ Output current mA 5.1 mA
4.7 k
24 V
R
Vcc
Iout===16