KEYENCE LV-SA User Manual
96M11665
Ultra-small Digital Laser Sensor
Accessories
■ Amplifier
Mounting bracket: 1 End unit: 2 Instruction Manual: 1
Supplied with LV-11SA (P) Supplied with LV-12SA (P)
LV-S Series
Instruction Manual
Safety Information for LV-S series
Warning
• This product is just intended to detect the object(s). Do not use this
product for the purpose to protect a human body or a part of human
body.
• This product is not intended for use as explosion-proof product. Do
not use this product in hazardous location and/or potentially explosive
atmosphere.
■
LV-S31 dedicated accessories
Mounting bracket: 1
■
Mounting bracket: 1
Plate nut: 1
M3 x 15 screw: 2
Adjustment screwdriver: 1
■
LV-S61 dedicated accessories
Mounting bracket: 1
Plate nut: 1
M2 x 12 screw: 2
Reflector (R-6): 1
■ LV-S71/S72 dedicated accessories
Mounting bracket: 2 Nut: 4
Facing ring: 2
Washer: 2
Identifying Part Names
LV-S41/S41L dedicated accessories
Beam axis adjustment cap: 1
φ30
Safety precautions on laser products
Warning
* The classification is implemented based on IEC60825-1 following the
requirements of Laser Notice No.50 of FDA (CDRH).
• Use of controls or adjustments or performance of procedures other
than those specified herein may result in hazardous radiation exposure.
• This product employs a semiconductor laser for its light source.
• Follow the instructions mentioned in this manual. Otherwise, injury to
the human body (eyes and skin) may result.
Precautions on class 1 laser products
• Do not disassemble this product. Laser emission from this product
is not automatically stopped when it is disassembled.
• Do not stare into the beam.
Sensor head LV-S31/S41/S41L/S61/S71/S72
Wavelength 655 nm
Output 290 μW
FDA(CDRH) Part 1040.10* Class 1 Laser Product
IEC 60825-1 Class 1 Laser Product
Safety Measures for the Laser
■ Laser emission stop input
The laser emission can be stopped by selecting the “Laser emission stop”
signal (20 ms or more) from the input functions and inputting it externally.
The emission stops while the signal is being input. The laser beam is emitted
in 20 ms after the signal input is canceled. The control output functions
according to the received light intensity even while laser emission stop is
input.
Amplifier
■ LV-12SA (P)
Output indicator lamp
(for control output 2)
SET button
Output indicator lamp
(for control output 1)
Hold lock bar
■ LV-11SA (P)
Sensor head
■ LV- S3 1
Operation indicator (red)
FAR indicator (red)
J
U
S
i
T
n
d
NEAR indicator (red)
■ LV- S4 1
Connector protection
cover
Extension connector
MODE button
Dust cover
Digital monitor
Manual button
Channel selection switch
(display settings)
Transmitting section
F
F
J
N
i
c
a
t
o
r
r
g
(
e
e
n
N
)
Receiving section
Adjustment trimmer
Note
When the power is turned on, even when the laser emission stop signal is
input, the laser is emitted for about 60 ms for self-diagnostic purpose.
E LV-S-IM
Operation indicator (red)
Receiving section Transmitting section
1
■ LV-S41L
■ LV- S 61
Transmitting section,
Receiving section
Receiving section
Transmitting section
Operation indicator (red)
Operation
indicator (red)
Reflector (accessory)
Mounting the Amplifier Unit
■ Mounting on a DIN rail
1)
Align the claw at the bottom of the main body with the
DIN rail. While pushing the main body in the direction
of the arrow 1, slant it in the direction of the arrow 2
2)
To dismount the sensor, raise the main body
in the direction of the arrow 3 while pushing
the main body in the direction of the arrow 1.
■ Installation using the mounting bracket (accessory)
(LV-11SA/11SAP only)
Mount the amplifier unit using the supplied
mounting bracket as shown in the figure.
(3)
.
(2)
(1)
■ LV-S71
Transmitting section
■ LV- S 72
Transmitting section
Operation indicator (red)
Transmitter
Operation indicator (red)
Transmitter
Receiver
Receiving section
Receiver
Receiving section
The operation indicator works in conjunction with the Output selected at the
channel selection switch. (It does with Output1 in area detection mode.)
Input/Output Circuit Schematic
Output circuit
LV-11SA/12SA (NPN output type)
Overcurrent protection circuit
Sensor main circuit
* LV-11SA only
LV-11SAP/12SAP (PNP output type)
Overcurrent protection circuit
Sensor main circuit
* LV-11SAP only
The power of the expansion unit LV-12SA (P) is supplied by the Extension
connector on the side of the main unit LV-11SA (P). The power wires (brown
and blue) of the main unit and those of the expansion unit are unified inside
by the connector.
■ Input circuit
• Not to be used
• Light emission stop input
• External calibration input
• Setting value bank selection input
• Received light intensity shift input
LV-11SA/12SA (NPN output type)
DC3.3V
(Short-circuit current 1 mA max.)
Sensor main circuit
* LV-11SA only
LV-11SAP/12SAP (PNP output type)
Sensor main circuit
* LV-11SAP only
Brown *
Black/white (control output 1/2)
Blue *
Brown *
Black/white (control output 1/2)
Blue *
Pink (input)
Blue *
Brown *
Pink (input)
(Short-circuit
current 2 mA max.)
Load
Load
DC12-24V
DC5-40V
0V
DC12-24V
0V
PLC etc.
0V
DC12-24V
PLC etc.
Select either one.
(switched by the amplifier
function selection)
Mounting bracket
(OP-25431)
M3 screw
■ Connecting several amplifier units
Up to 16 expansion units LV-12SA can be installed to the main unit LV-11SA.
1 Remove the protection cover on the side of the
main unit.
2 Install the amplifier one by one on the DIN rail.
(2)
3 Engage the two claws of the expansion
(1)
unit with the recesses on the main unit
side until you hear a click sound.
4 Install the end units on both ends of
the amplifier unit.
Fasten the screws on the top of the
end units (at two positions on both
end units) with the Philips screwdriver.
Two end units are
supplied with an
expansion unit.
OP-26751
* The stickers on the right are provided. Attach the
sticker on the place near the amplifier unit.
■ Removing the amplifier unit
1 Remove the end units.
2 Slide the expansion unit and remove it one by one.
• When installing additional expansion unit, be sure to use the DIN rail and the end units.
Important
• Turn off the power when installing or removing the unit.
• Do not remove the protective cover of the extension connector on the amplifier
expansion unit that is added at the end.
• Do not remove the amplifier unit with all added units attached, from the DIN rail.
• Verify the operation ambient temperature after additional installation.
(“Specifications” page 9)
2
E LV-S-IM
Connecting the Sensor Head and the Amplifier Unit
■ How to connect the amplifier unit and the connector
1 Open the dust cover, and tilt the
hold-lock lever.
2 Raise the hook, and insert the
connector to the very end.
LV-S41/S41L
Be sure to use the supplied mounting bracket.
1 Press the mounting bracket on the sensor head.
Be sure to hook the A portion of the mounting bracket on the B portion of
the sensor head.
A
B
3 Lower the hook
and hook the part
shown in the
figure, and then
raise the hold-lock
lever.
Note
When shortening the sensor head cable, follow the instructions given in the
“Sensor Head Connector Assembly Manual” included with the sensor head.
Mounting and Adjusting the Sensor Head
LV- S3 1
■ Adjusting the trimmer (detection position)
The detection range can be selected as desired by adjusting the trimmer.
When detecting the target
from a long distance, turn the
trimmer clockwise to adjust.
F
F
J
N
N
■ Adjusting the center of detection
When detecting the target
from a short distance, turn the
trimmer counterclockwise to
F
F
adjust.
J
N
N
1 Place the workpiece at the position you want to set as the
center of detection.
2
Turn the trimmer until JUST indicator (2) illuminates in green.
When (1) illuminates, turn the trimmer
(1)
(2)
(3)
Finer adjustment is possible by looking at the display on the amplifier (page 7).
■ Detecting a height difference
clockwise until (2) illuminates.
F
When (2) illuminates, the adjustment is
F
J
complete.
N
N
When (3) illuminates, turn the trimmer
counterclockwise until (2) illuminates.
A stable detection is made possible by
adjusting the trimmer so that the middle
point of the height comes to the center of
detection.
2 Install the sensor head on the flat surface with the M3 screws as shown in
the following figure. (The M3 screw is not an accessory.)
LV-S71/S72
Mount the sensor head such that the letter “T” (on the transmitter) or “R” (on
the receiver) faces upward. The side where the operation indicator illuminates should face upward.
Fixing nut
Beam axis adjusting
screw
■ Adjusting the beam axis
The angle of the beam axis can be changed upward if the screw indicated by
the arrow is tightened, and downward if loosened.
When you want to lower the beam axis When you want to raise the beam axis
Adjust the spot to be emitted at the center on the receiver.
The adjustment is facilitated by attaching the beam-axis adjustment cap supplied with the sensor head to the tip of the receiver
complete, remove the beam-axis adjustment cap.
Limit the tightening
torque up to 1.2 Nm.
. Once the adjustment is
■ Movement directions of the workpiece
Movement
direction
Detecting
object
Movement
direction
Detecting
object
E LV-S-IM
Detecting
object
Movement
direction
Beam axis adjustment cap
(supplied with the LV-S71)
3
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