
EE-SX67/47
EE-SX67/47
8
Precautions
Do
 not use the EE-SX at voltage exceeding the rated voltage range,
otherwise
 the EE-SX may be damaged.
Sensor
Load
+
–
Out
Do
 not make
 mistakes in wiring, such as mistakes in polarity
, other
-
wise
 the EE-SX may be damaged.
Sensor
Load
+
–
Out
Do
 not short-circuit the load (i.e., do not connect a power supply di
-
rectly to the Sensor) as shown below
,
 otherwise the EE-SX may be
damaged.
Sensor
Load
Load
short-circuiting
+
–
Out
Caution
Mounting
The EE-SX is a Sensor to be built into equipment. Therefore, no
special
 protective measures
 have been taken to protect the EE-SX
from external light disturbance. Make sure that the EE-SX is not
affected by incandescent lamps or other light sources that may
cause external light disturbance, otherwise the EE-SX may mal-
function.
Be
 sure to mount the Sensor securely
 to flat plates. The characteris
-
tics
 of the Through-beam Sensor change if the slot is deformed.
Use
 M3.0 screws when mounting the EE-SX. Be sure to use spring
washers with the screws so that the screws will not loosen. The
tightening torque applied to each screw must be no more than
0.59 N
 m (6 kgf 
 cm).
Make
 sure that nothing will
 come into contact with the sensing ele
-
ment
 of the Sensor
. If the sensing element has
 scratch damage, the
characteristics
 of the Sensor will decrease.
Make
 sure that the EE-SX is securely mounted and not loosened
 by
vibration or shock.
Wiring
Countermeasures Against Surge
If
 the power supply has surge voltage, connect a Zener diode with
-
standing 30 to 35 V or 0.1 to 1-
μ
F capacitor in parallel to the power
supply
 to absorb the surge voltage.
0.1
 to 1 
μ
F
If
 the load is a relay or other small inductive load, connect the load to
the
 EE-SX as shown below
. Be sure to connect a diode for
 counter-
voltage
 absorption.
Relay
OUT
Do
 not wire power lines or high-tension lines alongside the lines of
the
 EE-SX in the same conduit, otherwise the EE-SX may be dam
-
aged
 or malfunction due to induction. Be sure to wire the lines of the
EE-SX
 separately
 from power lines or high-tension lines or lay them
in
 an exclusive, shielded conduit.
Voltage Output
A Sensor with open collector output can
 be connected to a device
with voltage-input specifications by connecting a resistor between
the
 power supply and output terminals as shown in
 the following cir
-
cuit
 diagram. The resistance of the resistor is normally 4.7 k
 and
must
 withstand a power of 0.5 W at 24 V and 0.25 W at 12 V
.
Sensor
main
circuit
Resistor
Counter (voltage-input model)
+24 V (power supply)
Input terminal (CP)
Input impedance:
approx. 4.7 k
Output
EE-SX67/47 NPN models
EE-SX47/67
 NPN Models with a 4.7-k
 Resistor
High level:
Input voltage (V
H
) =
R+Z
Z
V
CC 
=
4.7
 k + 4.7 k
4.7 k
x 24 V = 12 V
Low level:
Load current (I
C
) =
R
V
CC
=
=
 5.1 mA 
 50 to 100 mA
R
24 V
Input voltage (V
L
) 
 0.4 V
Sensor
main
circuit
Resistor
+24 V (power supply)
Input terminal (CP)
Input impedance:
approx. 4.7 k
Output
EE-SX67/47 PNP models
EE-SX47/67
 PNP Models with a 4.7-k
 Resistor
High level:
Input voltage (V
H
) 
= Vcc–residual voltage
24 V–1.3 V=22.7 V
Low level:
Input voltage (V
L
) 
0 V
Note:
Refer to the ratings of the Sensor for the relationship be-
tween
 the residual voltage and load current.
!