How it Works
Keyence
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LV
User Manual
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User Manual
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User Manual
10 pgs1.04 Mb0
Table of contents
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Keyence LV User Manual

1
General Purpose Digital Laser Sensor
LV Series
Instruction Manual
Specifications of the laser diode change depending on the model. Refer to the tables below.

Laser safety precautions

Safety consideration
•
Use of controls or adjustments, or the performance of procedures other than those specified herein, may result in hazardous radiation exposure.
• The LV series product uses a laser diode as a light source.
Follow the safety precautions below to ensure operator safety:
• Operate the LV Series only according to the procedures described in this instruction manual. Otherwise, injury may occur due to exposure to the laser beam.
• Do not disassemble the sensor head. Laser emission from the LV Series is not automatically stopped if the sensor head is disassembled. If you disassemble the sensor head for inspection or repair, you may be exposed to the laser beam. If the LV Series malfunctions, contact KEYENCE immediately.
•Do not look directly at the laser beam. Looking directly at the laser beam may result in serious eye injury.
• Protective enclosure It is recommended that you install a protective enclosure around the sensor head to prevent any person from getting near the sensor head during operation.
• Protective goggles It is recommended that you wear protective goggles when using the LV Series.
•Stop laser emissions before cleaning the laser emission port. Failure to stop the laser emission may expose eyes or skin to the laser beam.
• Check the laser beam path. To prevent exposure to the laser beam due to specular or diffuse reflection, install a screen which offers the appropriate reflectance and temperature characteristics to interrupt the reflected laser beam. Do not install the LV Series in such a way that the laser beam passes at eye height.
Label location
Warning labels are attached to the sensor head, as shown below.
¡LV-H32
¡LV-H42 ¡LV-H52
¡
Laser CLASS II warning labels(FDA CLASS II)
¡Aperture label
¡Protective housing label
LASER RADIATION
­DO NOT STARE INTO BEAM. SEMICONDUCTOR LASER MAXIMUM OUTPUT PULSE DURATION CLASS II LASER PRODUCT
650nm
3mW
3.5 s
CAUTIONTION
THIS PRODUCT COMPLIES WITH 21 CFR 1040.10 AND 1040.11
LASER RADIATION
­DO NOT STARE INTO BEAM. SEMICONDUCTOR LASER MAXIMUM OUTPUT PULSE DURATION CLASS II LASER PRODUCT
650nm
3mW
3.5 s
CAUTIONTION
1-3-14,Higashi-Nakajima,Higashi
-Yodogawa-ku,Osaka,533-8555,JAPAN
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Aperture label
Aperture
AVOID EXPOSURE
LASER RADIATION IS EMITTED
FROM THIS APERTURE.
CAUTION
LASER RADIATION WHEN OPEN.
DO NOT STARE INTO BEAM.
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Aperture
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Aperture label
Protect housing label
Aperture
¡IEC CLASS 2
LASERSTRAHLUNG
NICHT IN DEN STRAHL BLICKEN Wellenlänge
Maximalen Leistung Impulsdauer
650nm
3mW
3.5µs
LASER KLASSE 2
nach Entwurf DIN EN 60825-1 1998-01
VORS I CH T Laserstrahlung wenn Abdeckung geöffnet. Nicht in den Strahl blicken.
RAYONNEMENT LASER
NE PAS REGARDER DANS LE FAISCEAU
Longueur d´onde èmise Puissance maximale Durèe de l´impulsion
650nm
3mW
3.5µs
APPAREIL À LASER DE CLASSE 2
conforme à CEI 60825-1 1998-01
ATTE NTION
Rayonnement laser en cas d´ouverture. Ne pas regarder dans le faisceau.
LASER RADIATION
DO NOT STARE INTO BEAM
Wavelength Maximum output Pulse duration
650nm
3mW
3.5µs
CLASS 2 LASER PRODUCT
in conformity to IEC 60825-1 1998-01
CAUTION Laser radiation when open. Do not stare into beam.
The FDA warning label has already been stuck.
LV-H32 only
LV-H32 only
LV-H32 only
Laser ON alarm indicator
The laser ON alarm indicator will start flashing after power is turned on. The lamp will remain ON for as long as the laser light is emitting. This alarm indicator can be seen even when wearing protective goggles.
Laser emission stop input (LV-21A/21AP/51M/51MP/11A)
Laser emission can be stopped by short-circuiting between the purple and blue (GND) wires when LV-21A, LV-51M or LV-11A used. When LV-21AP or 51MP is used, short-circuit between the purple and brown (12 to 24 V DC) wires to stop laser emission.

Safety features

LASER ON
PH
A B
BH
MODE SET
%
Laser ON alarm indicator
LV-21A/11A/51M
¡LV-H35/H62/H67 ¡LV-H64/H65
¡LV-H100 (Transmitter side)
¡LV-H300 (Transmitter side)
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Aperture
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Aperture label
Aperture
¡LV-H37/H47
96M0994
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Aperture
Aperture label
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Laser CLASS II warning label
Laser CLASS II warning label
Laser CLASS II warning label
Laser CLASS II warning label
Aperture
Aperture label
Aperture
Aperture label
Laser CLASS II warning label
•
This is the product for detecting the target object. Do not use it in the safety circuit such as the human body protection circuit.
•
This product does not have the explosion-proof construction Do not use it in the inflammable atmosphere such as atmosphere gas, liquid or dust.
Warning labels
¡DIN Klasse 2
¡IEC (French) CLASS 2

Safety Precautions

5 V DC
Purple
Main circuit
(Short circuit current 1 mA max.)
Blue
Warning
Warning
Warning
When A, which is closer to the amplifier, is ON, the monitor displays the excess gain of output A. When B is ON, the monitor displays the excess gain of output B.
2

Amplifier

Part Names

LV-H51/H52
LV-H32
Adjust the beam spot size by turning the focus ring. After completing the adjustment, fix by turning the focus lock screw.
LV-H41/H42

Sensor head

Transmitter
Receiver
Transmitter
Receiver
Focus lock
Focus ring

Slit for sensor head (Option for LV-H41/H42/H47/H51/H52)

If detection becomes unstable (light cannot be "steadily received" or "steadily interrupted") due to a change in the surroundings or the target, or for any other reason, readjust the sensitivity.
Bar Graph LED monitor
(Interlocked with amplifier)
Bar LED monitor (sensor head)
The indicator turns on according to the difference between the received light intensity and the setting value. The current level of detection stability can be determined from this difference.
Light is steadily received
Setting value
Light is steadily interrupted
+10%
−
-10%−
LV-H37/H47
LV-H300
LV-H100
LV-H35/H62/H67
LV-H64/H65
Transmitter side (T)
Red
Transmitter
Gray cable
Receiver side (R)
Blue
Receiver
Black cable
Transmitter side (T)
Red
Transmitter
Gray cable
Receiver side (R)
Blue
Receiver
Black cable
PH
A B
BH
MODE SET
%
15%– 10%– 5%–
-5%–
-10%– -15%–
S
M
Bar LED monitor
Displaying excess gain
Calibration indicator
Peak hold display indicator
Output B indicator
Channel indicator
Setting monitor
• Displaying setting values
• Displaying settings
UP/DOWN button
• Changing setting values
• Selecting between various settings
Excess gain indicator
SET button
Set up sensitivity
MODE button
• Switching displays
• Switching channels
• Displaying various settings
Received light intensity monitor
• Displaying received light intensity
• Displaying excess gain
• Displaying the hold value
Setting
value
Bar LED Monitor
Light is steadily
received
Light is
irregularly
received
Light is
irregularly
interrupted
Light is steadily
interrupted
The current value of received light intensity is displayed relative to the setting value, within the range -15% to +15%.
Detection is generally stable when the received light intensity is at least ±10% different to the setting value, which is represented by the center bar of the LED monitor.
NOTENOTE
The illustration shows an example of a received light intensity of +5%.
Bottom hold display indicator
Laser ON alarm indicator
Output button
Output A indicator
Use in accordance with the distance and target.
¡
Attaching the slit
Attach the slit to the transmitter
¡
Removing the slit
Remove the slit by lifting up the pin on the slit with a screwdriver.
¡
LV-H41/H42
¡
LV-H51/H52
¡
LV-H47
Transmitter, Receiver
Transmitter, Receiver
Display excess gain on Bar LED monitor
L
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K
Transmitter
Receiver
Transmitter
Receiver
3

Accessories

Amplifier

Sensor head

LV-H32
LV-H41/H42
LV-H51/H52
Amplifier Mounting bracket
（LV-21A/21AP/51M/51MP/
11A only）
End unit
（LV-22A/22AP/52/52P
only）
Plastic driver
Mounting bracket
Slit (black, gray) Mounting bracket
L
O
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K
Slit
Mounting bracket main body Board nut M3 x 18 screw:2
Mounting bracket main body Board nut M3 x 18 screw:2
LV-H37
Magnifying glass Mounting bracket
Mounting bracket main body Board nut M3 x 18 screw:2
LV-H62
Reflector Mounting bracket
Mounting bracket main body Board nut M3 x 18 screw:2
LV-H67
Reflector Mounting bracket
Mounting bracket main body Board nut M3 x 18 screw:2
LV-H47
Slit (black, gray) Mounting bracket
Mounting bracket main body Board nut M3 x 18 screw:2
LV-H35
LV-H64/H65
Mounting bracket
Mounting bracket main body Board nut M3 x 18 screw:2
Mounting bracketReflector
Mounting bracket main body Board nut M3 x 18 screw:2

Input/Output Circuit Diagram

¡LV-11A/21A/51M
Blue
Purple(Laser radiation interruption input)
Brown
12 to 24 V DC
5 to 40 V DC
5 to 40 V DC
0 V DC
Pink(External tuning input)*
White
(Control output A)
Black
Main circuit
Overcurrent
protection circuit
Load
Load
(Control output B)
¡LV-22A/52
White
(Control output A)
Black
5 to 40 V DC
5 to 40 V DC
Main circuit
Overcurrent
protection circuit
Load
Load
(Control output B)
¡
Laser radiation interruption (Main unit only) External tuning input circuit diagram
¡Analog output circuit
diagram for monitor (LV-51M/51MP)
(Short circuit current 1 mA max.)
Blue
Purple or Pink
5 V DC
Main circuit
¡LV-21AP/51MP
Blue
Purple
Brown
12 to 24 V DC
0 V DC
Pink*
White
(Control output A)
Black
Main circuit
Overcurrent
protection circuit
Load
Load
(Control output B)
(Laser radiation interruption input)
(External tuning input)
¡LV-22AP/52P
White
(Control output A)
Black
12 to 24V DC
Main circuit
Overcurrent
protection circuit
Load
Load
(Control output B)
LV-21AP/51MP
LV-21A/11A/51M
(Short circuit current 2 mA max.)
Brown
Purple or Pink
12 to 24 V DC
Main circuit
0 V
Main circuit
Protection
circuit
Orange
Blue
Output for monitor (1 to 4 V)
LV-H300
LV-H100
Transmitter side (T)
Gray cable
Receiver side (R)
Black cable
Transmitter side (T)
Gray cable
Receiver side (R)
Black cable
* LV-51M (monitor output) only is orange.
* LV-51MP (monitor output) only is orange.
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