Eq-500, Precautions for proper use – Panasonic EQ-500 Series User Manual

Page 9

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202

EQ-500

PRECAUTIONS FOR PROPER USE

Time chart

Timer function (EQ-5

T 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

T

T

T

T

T

T

T

T

T

T


EQ-5

T 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


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-512

Ⅺ)

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

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