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EQ-500
PRECAUTIONS FOR PROPER USE
Time chart
Timer function (EQ-5ⅪT only)
Operation
Sensing
condition
ON
OFF
ON
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
OFF
ON
OFF
Timer period: T = 0.1 to 5 sec. (variable)
T
T
TT T
T
TT T
TT
T
•
•
•
EQ-5ⅪT incorporates an OFF-delay timer, which is useful when
the response of the connected device is slow, etc., and an
ON-delay timer, which is useful for detecting objects that move
slowly, for example.
The OFF-delay and ON-delay timers can be used simultaneously.
For DC-voltage type, set the DIP switch for the timer mode to
‘Timer ON’ side.
Non-detection
normal operation
Non-detection ON-delay
Non-detection OFF-delay
Detection
normal operation
Detection ON-delay
Detection OFF-delay
Detection ON / OFF-delay
Non-detection
ON / OFF-delay
Sensing object
Output (Operation indicator)
(In case of Detection-ON)
ON (Lights up)
OFF (Lights off)
Stable operating
condition
Stable operating
condition
Lights up
Lights off
Stability indicator
Unstable
operating condition
Setting distance
Stability indicator
•
Since the EQ-500 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 (orange)
operate according to the object distance.
Furthermore, the stability indicator (green) shows the margin of
the setting distance.
Others
•
•
•
•
•
•
•
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Take care that the sensor is not directly exposed to fluorescent
light from a rapid-starter lamp or a high frequency lighting device,
as it may affect the sensing performance.
Do not use during the initial transient time (50 ms) after the
power supply is switched on.
This sensor is suitable for indoor use only.
Its distance adjuster is mechanically operated. Do not drop; avoid
other shocks.
Do not use this sensor in places having excessive vapor, dust,
etc., or where it may come in direct contact with water, or
corrosive gas.
Take care that the sensor does not come in direct contact with
water, oil, grease or organic solvents, such as, thinner, etc.
This sensor cannot be used in an environment containing
inflammable or explosive gases.
Never disassemble or modify the sensor.
Multi-voltage type, DC-voltage type • BGS select
Distance adjustment
Description
Distance
adjuster
Turn the distance adjuster fully counterclockwise
to the minimum sensing range position. (0.2 m
0.656 ft approx.)
Optimum
position
1
Please an object at the required distance from the
sensor, gradually turn the distance adjuster clock-
wise to determine point a, where the sensor
changes to the detecting state.
2
Remove the object. Continue turning the adjuster
clockwise until the sensor enters the detecting
state again. Then turn the distance adjuster back
a little untill the sensor returns to the non-detec-
ting state, called point b .
If the sensor does not go into the detecting state
even if the adjuster is turned fully clockwise, point b
is regarded as the maximum position on the scale.
3
The optimum position to stably detect objects is
the center point between a and b.
4
Turn fully
Step
For DC-voltage type, be sure to set the BGS / FGS function before
distance adjustment. If the setting is done after the distance ad-
justment, the sensing area is changed.
•
DC-voltage type • FGS select
Turn the distance adjuster fully clockwise to the
maximum sensing range position. (2.5 m 8.202 ft
approx., 1.0 m 3.281 ft approx. for EQ-512Ⅺ)
Optimum
position
1
In the state where the sensor detects the back-
ground, gradually turn the distance adjuster coun-
terclockwise, to determine point a where the
sensor changes to the non-detecting state.
2
Place an object at the required distance from the sensor,
turn the adjuster counterclockwise further until the sen-
sor goes into the non-detecting state again. Once enter-
ed, turn the adjuster backward a little until the sensor re-
turns to the detecting state, called point b .
If the sensor does not go into the non-detecting state
even if the adjuster is turned fully counterclockwise, point
b is regarded as the maximum position on the scale.
3
The optimum position to stably detect objects is
the center point between a and b .
4
Turn fully
Description
Distance
adjuster
Step
• Turn the distance adjuster gradually and lightly with the attached
adjusting screwdriver. Turning with excessive strength will cause
damage to the adjuster.
08/2005