LG-930
Photoelectric Detector
Instruction Manual
Warning
Before mounting or removing the sensor, be sure to confirm that
the rotor has stopped rotating. Otherwise, your fingers or clothes
might be pinched and taken into the mechanism resulting in seri-
ous injuries.
1. OUTLINE
The LG-930 is a reflection-type photoelectric detector developed for medium dis-
tance detection applications. By simply attaching the reflection mark (supplied
with the equipment) to a rotating object, the LG-930 detector can detect the rota-
tion of the object without actually touching the object. The LG-930 detector has a
hybrid structure with all light- projecting, light-receiving, amplifying, and wave-
form-shaping sections built into the unit to offer a compact design with easy-to-
operate functions. The LG-930 also uses visible rays for easy positional alignment
and incorporates operation indicators to simplify equipment settings. Because the
light source of the LG-930 detector uses a pulse-lighting method, it is practically
unaffected by disturbance light.
2. INSTALLATION
(1) Precautions on installation
1
Metal fitting
Be sure to securely fasten the metal fitting to prevent it from becoming loose due
to vibration.
2
Installation sites
If the LG-930 detector is installed in the following locations, change its fitting
direction or cover it to prevent possible erroneous operation.
• Where exposed to strong disturbance light or where unwanted light directly
enters the lens .
• Where subject to excessive vibration or shock.
• Where subject to excessive dust conditions.
• Where water or oil may splash directly onto the lens
(2) Precautions on handling
Be careful not to damage the lens (located at the tip of the detector) or contami-
nate it with dust. If the lens is soiled, clean it by carefully wiping with a soft
cloth.
(3) Precautions on wiring
1
Connect the LG-930 detector to the power supply and measuring equipment
(counter) according to the wiring diagram shown below. Although the LG-
930 detector uses I 90cm cables (connected directly from the detector), if an
extension is required, use the 50cm extension cables supplied by Ono Sokki
(Type D-5). When connecting these cables, avoid routing along other power
cables to eliminate noise or other adverse effects.
2
Ripple can be minimized by avoiding connection between the signal COM
wire (green) and 0V terminal of the power supply (black). For this reason, do
not externally connect the signal and 0V power supply unless absolutely
necessary. Note that both are connected inside the detector. A shielded wire
is connected to the detector case. Connect this shielded wire to the counter
GND or COM (whichever functions better).
(4) Checking operation
After confirming that all wires are properly connected, turn the power on and
check equipment operation. Bring the reflection mark (supplied with the detec-
tor) to within the detection range to check whether the operation indicator lights.
When the indicator goes on, the output signal should change to high level
(about5V). If the indicator does not go on, check the power supply polarity or
the wiring.
3. SPECIFICATIONS
Detecting method
:Visible ray photoelectric reflection
Detectable distance
: 70mm - 200mm
Detectable object
: Reflection mark
Maximum response speed
: 25 m/s (When using the dedicated 12mm square
reflection mark with the attached interval magnified
3 times the mark width)
Response lag
: 0.5ms or less (When measured between input and
output by directly entering the pulse signal)
Light source
: Light-emitting diode (red visible rays)
Lighting method
: Pulse lighting method
Light-receiving device
: Phototransistor
Disturbance light
: 3,000 lux or less
Power supply
: 12VDC
±
2V
Power consumption
: 85mA or less (at 12V)
Output voltage
: +5V
±
0.5V for Hi; +0.5V or less for Lo (When a
load resistance of 100k
Ω
or more)
Output impedance
: 1k
Ω
or less
Output method
: Floating earth
Protection circuit
: Power supply polarity protected
Ambient temperature range
: -10 ºC to +60 ºC
Storage temperature range
: -20 ºC to +80 ºC
Vibration resistance
(When power on)
: 1.1mm compound amplitude, 30Hz vibration fre-
quency applied for one hour each in X and Y direc-
tions
Impact resistance
(When power off)
: 294 m/s
2
applied three times each in X and Y direc-
tions
I/O connectors
: Directly led out, one-side open cables
Blue .......... Signal output
Green ....... Signal COM
Red ........... Power supply, 12VDC
±
2V
Black ........ Power supply, 0V
White ....... N.C.
Shield ....... Case ground
Cable length
: 4.9 m
Outline dimensions
: See the Outer Dimensions shown below.
Mass
: Approx. 300g
Accessories
(supplied with the detector)
: Metal fitting .........1 pc. (with two 4mm dia. screws)
Reflection marks.... .1 sheet (12mm square x 25 pes.)
Instruction manual..1 copy
4. OUTER DIMENSIONS
5. WARRANTY
1 This product is covered by a warranty for a period of one year from the date of purchase.
2 This warranty covers free-of-charge repair for defects judged to be the responsibility of the manufacturer,
i.e., defects occurred while the product is used under normal operating conditions according to descriptions in
this manual and notices on the unit label.
3 For free-of-charge repair, contact either your sales representative or our sales office nearby.
4 The following failures will be handled on a fee basis even during the warranty period.
(a) Failures occurring through misuse, mis-operation, or modification.
(b) Failures occurring through mishandling (dropping) or transportation.
(c) Failures occurring through natural calamities (tires, earthquakes, flooding, and lightening}, environmental
disruption, or abnormal voltage.
*For repairs after the warranty period expired, contact your sales representative or our sales office nearby.
WORLDWIDE
Ono Sokki Co., Ltd.
1-16-1 Hakusan, Midori-ku,
Yokohama 226-8507, Japan
Phone :045-935-3976
Fax
:045-930-1906
E-mail :[email protected]
ONOSOKKI
*
Outer appearance and specifications are subject to change without prior notice.
HOME PAGE : http://www.onosokki.co.jp/English/english.htm
Counter
SIG IN
COM
GND
+ DC12 V
±
2V
- 0 V
DC power supply
Blue
LG-930
main unit
Green
Shield
Red
Black
(White : N.C.)
ONOSOKKI
22
24
2-R2.1
2-R2.1
49
29
8
6
5.5
8
OPT. SENSOR
ONOSOKKI
76.5
35
28.5
Cable(ø5): 4.9m
2-M4
23
12.5
2
(38)
29
