Panasonic EQ-34 Instruction manual - page 2
●
●
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 sens-
ing object.
Some object may produce the dead zone right
in front of the sensor.
●
Since the
EQ-30
series uses a 2-segment pho-
todiode 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 in-
dicator 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.
STABILITY INDICATOR
6
Sensor
Setting distance
Sensing
object
Sensing
object
Sensing
object
Output
(operation indicator)
(In case of Detection-ON)
Stability indicator
(Black non-glossy paper)
Stability indicator
(White non-glossy paper)
Stable light
received condition
Stable dark
condition
Stable light
received condition
Stable dark
condition
Unstable light
received condition
Unstable light
received condition
ON (Lights up)
Lights up
Lights up
OFF (Turns off)
Turns off
Turns off
I/O CIRCUIT DIAGRAMS
5
●
Connector pin position of the connector type
Not connected
2
Output
4
+V
1
0V
3
●
NPN output type / EQ-34
Symbols...D
Z
D
T
r
: Reverse supply polarity protection diode
: Surge absorption zener diode
: NPN output transistor
D
T
r
Z
D
+
-
10 to 30V
DC
Internal circuit
Users' circuit
Load
(Black / 4) Output
(Blue / 3) 0V
(Brown / 1) +V
Color code / Connector pin No.
of the connector type
100mA max.
Main circuit
Symbols...D
Z
D
T
r
: Reverse supply polarity protection diode
: Surge absorption zener diode
: PNP output transistor
●
PNP output type / EQ-34-PN
(Black / 4) Output
(Blue / 3) 0V
(Brown / 1) +V
Color code / Connector pin No.
of the connector type
D
T
r
Z
D
+
-
10 to 30V
DC
Internal circuit
Users' circuit
100mA max.
Main circuit
Load
●
Two outputs type / EQ-34W
Symbols...D: , Reverse supply polarity protection diode
Z
D1
, Z
D2
: Surge absorption zener diode
T
r1
, T
r2
: NPN output transistor
(Blue) 0V
(Brown) +V
D
T
r1
Z
D1
+
-
10 to 30V
DC
Internal circuit
Users' circuit
(Black) Far
(Main) output
100mA max.
T
r2
Z
D2
(White) Near (Sub) output
100mA max.
Color code
Main circuit
Load
Load
DISTANCE ADJUSTMENT
7
EQ-34, EQ-34-PN
●
Adjusting procedure
Note: Use the accessory adjuster screwdriver to turn the distance
adjuster slowly. Turning with excessive force will cause dam-
age the adjuster.
①
②
③
④
Turn the distance adjuster fully counter-
clockwise to the minimum sensing range
position of 0.2m approx.
Place an object at the required distance
from the sensor, turn the distance adjuster
gradually clockwise, and find out point
where the sensor changes to the light re-
ceived condition.
Remove the object, turn the distance ad-
juster further counterclockwise, and find
out point where the sensor changes to
the light received condition again with only
the background.
When the sensor does not go to the light
received condition even if the adjuster is
fully turned clockwise, point is this ex-
treme point in the range.
The optimum position to stably detect ob-
jects is the center point between and .
Step
Distance adjuster
Description
N E A R
F A R
Turn fully
A
N E A R
F A R
A
N E A R
F A R
B
A
N E A R
F A R
B
Optimum
position
●
Top-view
N E A R
F A R
L
D
Operation mode switch
L: Detection-ON
D: Detection-OFF
(Turn the switch fully.)
Adjuster indicator
Shows how much
the distance adjust-
er is rotated.
Distance adjuster
(2-turn)
The sensing range
increases as it is
turned clockwise.
Stability indicator (Green)
Lights up under stable
light received condition
or stable dark condition.
Operation indicator
(Red)
Lights up when the
output is ON.
EQ-34W
●
Top-view
STB
NEAR
FAR
D
L
SUB
MAIN
MODE
SUB
MAIN
Far (Main) output
operation indicator (Red)
Lights up when the Far
(Main) output is ON.
Operation mode switch
L: Detection-ON
D: Detection-OFF
(Turn the switch fully.)
Far (Main) adjuster indicator
Shows how much the dis-
tance adjuster is rotated.
Near (Sub) distance adjuster
The sensing range increas-
es as it is turned clockwise.
Far (Main) distance
adjuster (2-turn)
The sensing range
increases as it is
turned clockwise.
Stability indicator (Green)
Lights up under stable
light received condition
or stable dark condition.
Near (Sub) output
operation indicator (Red)
Lights up when the Near
(Sub) output is ON.
●
・
Adjusting procedure
Far (Main) side
①
Turn the Far (Main) distance adjuster
fully counterclockwise to the minimum
sensing range position of 0.2m approx.
Step
Distance adjuster
Description
NEAR
FAR
MAIN
Turn fully
②
③
④
Place an object at the far place at the re-
quired distance from the sensor, turn the
Far (Main) distance adjuster gradually clock-
wise, and find out point where the sensor
changes to the light received condition.
Remove the object, turn the Far (Main)
distance adjuster further clockwise, and
find out point where the sensor
changes to the light received condition
again with only the background.
When the sensor does not go to the
light received condition even if the ad-
juster is fully turned clockwise, point
is this extreme point in the range.
The optimum position to stably detect
objects for the Far (Main) setting is the
center point between and .
A
B
NEAR
FAR
MAIN
Optimum
position
NEAR
FAR
MAIN
A
A
B
NEAR
FAR
MAIN
・
Near (Sub) side
①
②
③
④
Turn the Near (Sub) distance adjuster
fully counterclockwise to the minimum
sensing range point.
Step
Distance adjuster
Description
SUB
C
Turn fully
SUB
SUB
C
D
SUB
Optimum
position
C
D
Place an object at the near position, at the
required distance from the sensor, turn the
Near (Sub) distance adjuster gradually
clockwise, and find out point where the
sensor changes to the light received condi-
The optimum position to stably detect
objects for the Near (Sub) setting is the
center point between and .
Remove the object from the near posi-
tion, and place the object for Far (Main)
sensing at the sensing position. Turn the
Near (Sub) distance adjuster further
clockwise, and find out point where the
sensor changes to the light received con-
dition again with only the background.
When the sensor does not go to the
light received condition even if the ad-
juster is fully turned clockwise, point
is this extreme point in the range.
Notes: 1)
2)
Use the accessory adjuster screwdriver to turn the distance adjuster
slowly. Turning with excessive force will cause damage the adjuster.
The Far (Main) distance adjustment should be done before the Near
(Sub) distance adjustment. Take care that the Near (Sub) setting
distance changes with change in the Far (Main) setting distance.
Near (Sub)
setting distance
Far (Main)
setting distance
Near object
Far object
ON
OFF
ON
OFF
Near (Sub) distance
adjustable range
EQ-34W
Far (Main) distance adjustable range
(0.2 to 2m)
Near (Sub) dis-
tance adjuster set
at the maximum.
Far (Main) output
In case of
Detection-ON
Near (Sub) output
In case of
Detection-OFF
The following distance adjusting procedure for
EQ-34
,
EQ-34-PN
and the Far (Main) side / Near
(Sub) side of
EQ-34W
is for use when a sensing
object moves horizontally to the sensor. When a
sensing object is approaching / moving away
from the sensor, follow only steps
①
and
②
re-
spectively.
Since the sensing point may change depending
on the sensing object, be sure to check the oper-
ation with the actual sensing object.
© Panasonic Electric Works SUNX Co., Ltd. 2010
PRINTED IN JAPAN
http://panasonic-electric-works.net/sunx
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