Datasheet

246
EQ-30
EQ-34W
SENSING CHARACTERISTICS (TYPICAL)
PRECAUTIONS FOR PROPER USE
Correlation between color (200200 mm 7.8747.874 in non-glossy paper) and sensing range Correlation between material (200200 mm 7.8747.874 in) and sensing range
This product is not a safety sensor. Its use is not
intended or designed to protect life and prevent body
injury or property damage from dangerous parts of
machinery. It is a normal object detection sensor.
Stability indicator
• Since the EQ-30 series uses a 2-segment photodiode as
its receiving element, and sensing is done based on the
difference in the incident beam angle of the reflected
beam from the sensing object, the output and the
operation indicator operate according to the object
distance.
Further, the stability indicator shows the margin of the
incident light intensity and not that of the object distance.
Hence, the distance at which it lights up/off depends on
the object reflectivity and is not at all related to the output
operation. Do not use the sensor when the stability
indicator is off (unstable light received condition), since the
sensing will be unstable.
Others
• Do not use during the initial transient time (50 ms) after
the power supply is switched on.
• When connecting the mating cable to the plug-in
connector type, the tightening torque should be 0.4Nm or
less.
Mounting
• The tightening torque
should be 0.8 Nm or
less.
• Care must be taken regarding the sensor mounting
direction with respect to the object’s direction of movement.
• When detecting a specular object (aluminum or copper
foil) or an object having a glossy surface or coating,
please take care that there are cases when the object may
not be detected due to a small change in angle, wrinkles
on the object surface, etc.
• When a specular body is present below the sensor, use
the sensor by tilting it slightly upwards to avoid wrong
operation.
• If a specular body is present in the background, wrong
operation may be caused due to a small change in the
angle of the background body. In that case, install the
sensor at an inclination and confirm the operation with the
actual sensing object.
• Take care that some objects may produce a dead zone
right in front of the sensor.
Do not make the sensor
detect an object in this
direction because it may
cause unstable operation.
08/2005