KEYENCE LV-SB User Manual

96M11667

Ultra-small Digital Laser Sensor

LV-S Series (Type B)

Instruction Manual

■ Symbols

The following warning symbols are used to alert you to safety precautions and to prevent human injury and/or damage to property when using this product.

Accessories

■ Amplifier

Mounting bracket: 1 End unit: 2 Instruction Manual: 1 Supplied with LV-11SB (P) Supplied with LV-12SB (P)

■

LV-S31 dedicated accessories

Mounting bracket: 1 Plate nut: 1 M3 x 15 screw: 2 Adjustment screwdriver: 1

■

LV-S62 dedicated accessories

Reflector (R-6L): 1

■

LV-S41/S41L dedicated accessories

Mounting bracket: 1

Warning

Important

Failure to follow instructions may lead to injury.

Indicates warnings and restrictions that must be followed during operations.

Note

Provides additional information on proper operations that can be easily mistaken.

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.

Safety precautions on laser products

Warning

FDA(CDRH) Part 1040.10* Class 1 Laser Product

* The classification is implemented based on IEC60825-1 following the

requirements of Laser Notice No.50 of FDA (CDRH).

• U se 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 LV-S62/S63

Wavelength 655 nm 660 nm

Output 290 μW

IEC 60825-1 Class 1 Laser Product

■

LV-S61 dedicated accessories

Mounting bracket: 1 Plate nut: 1 M2 x 12 screw: 2 Reflector (R-6): 1

■

L-shaped mounting bracket: 1 M4 nut: 3 M4 x 30 screw: 3 Reflector (R-9): 1

■ LV-S71/S72 dedicated accessories

Mounting bracket: 2 Nut: 4

Facing ring: 2 Washer: 2

Identifying Part Names

Amplifier

■ LV-12SB (P) (Expansion unit)

Connector protection

cover

Extension connector

MODE button

Output indicator lamp

(for control output 1)

Hold lock bar

Output indicator lamp

(for control output 2)

SET button

Digital monitor

Manual button

Channel selection switch

(display settings)

LV-S63 dedicated accessories

Beam axis adjustment cap: 1

ø30

Dust cover

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.

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.

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■ LV-11SB (P) (Main unit)

Sensor head

■ LV- S3 1

Operation indicator (red)

FAR indicator (red)

NEAR indicator (red)

Transmitting section

(

)

Receiving section

Adjustment trimmer

■ LV- S 41

Receiving

Transmitting section

section

■ LV- S 61

Transmitting section, Receiving section

■ LV- S 62

■ LV- S 63

Transmitting section, Receiving section

Operation indicator (red)

Transmitting section, Receiving section

Spot selection switch

Operation indicator (red)

■ LV- S4 1 L

Receiving section

Operation indicator (red)

Transmitting section

Operation indicator (red)

Reflector (accessory)

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.

•

Important

Input/Output Circuit Schematic

■ Output circuit

LV-11SB/12SB (NPN output type)

When installing additional expansion unit, be sure to use the DIN rail and the end units.

• 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 addi tional installati on. (“Specifications” page 11)

•

Do not use full calibration functions or stability output when the expansion unit of the LV-S Series is connected to a device with full calibration functions (such as FST or PS-T) via external input. Doing so may lead to product malfunctions.

Brown *

Black/white (control output 1/2)

Load

DC12-24V

DC5-40V

■ LV-S71

Operation indicator (red)

Tra ns mi t te r

Transmitting section

Receiver

Receiving section

■ LV- S7 2

Operation indicator (red)

Tra ns m it te r

Transmitting section

Receive

Receiving section

The operation indicator works in conjunction with the Output selected at the channel selection switch. (It does with Output 1 in area detection mode.)

Mounting the Amplifier Unit

■ Mounting on a DIN rail

(3)

(2)

Mounting bracket (OP-25431)

(1)

M3 screw

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

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-11SB/11SBP only)

Mount the amplifier unit using the supplied mounting bracket as shown in the figure.

■ Connecting several amplifier units

Up to 16 expansion units LV-12SB can be installed to the main unit LV-11SB.

1 Remove the protection cover on the side of the

main unit.

Overcurrent protection circuit

Sensor main circuit

Blue *

* LV-11SB only

LV-11SBP/12SBP (PNP output type)

Overcurrent protection circuit

Sensor main circuit

Brown *

Black/white (control output 1/2)

Blue *

DC12-24V

Load

* LV-11SBP only The power of the expansion unit LV-12SB (P) is supplied by the Extension connector on the side of the main unit LV-11SB (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-11SB/12SB (NPN output type)

DC3.3V

Pink (input)

PLC etc.

(Short-circuit current 1 mA max.)

Sensor main circuit

Blue *

* LV-11SB only

LV-11SBP/12SBP (PNP output type)

DC12-24V

Brown *

PLC etc.

Pink (input)

Sensor main circuit

* LV-11SBP only

(Short-circuit current 2 mA max.)

Select either one. (switched by the amplifier function selection)

2 Install the amplifier one by one on the DIN rail.

3 Engage the two claws of the expansion

unit with the recesses on the main unit side until you hear a click sound.

(2)

(1)

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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.

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.

2 Raise the hook, and insert the

connector to the very end.

Lower the hook and hook the part shown in the figure, and then raise the holdlock lever.

Note

When shortening the sensor head cable, follow the instructions given in the “Sensor Head Connector Assembly Procedures” 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 J

■ Adjusting the center of detection

When detecting the target from a short distance, turn the trimmer counterclockwise to

adjust.

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 clockwise until (2)

(1) (2) (3)

Finer adjustment is possible by looking at the display on the amplifier (page 9).

■ Detecting a height difference

A stable detection is made possible by adjusting the trimmer so that the middle point of the height comes to the center of detection.

Middle point

illuminates.

When (2) illuminates, the

adjustment is complete.

When (3) illuminates, turn the trimmer counterclockwise until (2) illuminates.

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-S62

Mount the sensor head using either L-shaped mounting bracket (OP-84350), rear mounting bracket (OP-84349), side mounting bracket (OP-84351) sold separately.

■ L-shaped mounting bracket (sold separately: OP-84350)

Mounting bracket 1 Plate nut 1 M3 x 7.3 screw 1

1 Insert the plate nut to the head.

2 Insert the protrusion on the amplifier for

securing the bracket into the hole at the upper part of the bracket.

Limit the tightening torque up to 0.5Nm

■ Rear mounting bracket (sold separately: OP-84349)

Mounting bracket 1 M3 x 18 screw 2

Limit the tightening torque up to 0.5Nm

• Adjusting the beam axis

(1) The beam axis angle can be adjusted horizontally by swinging the

bracket to the left and right with screws (a), (b) and (c) loosened. In order to tighten the screws, be sure to tighten screw (b) first.

(a)

(c)

(b)

(a)

(2) The angle of the beam axis can be changed downward if the screw indi-

cated by the arrow is tightened, and upward if loosened.

When you want to lower the beam axis. When you want to raise the beam axis.

(c)

(b)

■ Movement directions of the workpiece

Movement direction

Detecting object

Movement direction

Detecting object

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Movement direction

Be sure to adjust the beam axis in the order of (1) and (2).

Important

If the order is reversed, the screws in (1) may be damaged.

■ Side mounting bracket (sold separately: OP-84351)

Mounting bracket 1 M3 x 18 screw 2

Note

When mounting the sensor head in the opposite direction as described previously, set the spot toggle switch before mounting.

• 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 raise the beam axis. When you want to lower the beam axis.

Spot toggle switch

Limit the tightening torque up to 0.5Nm

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.

• Adjusting the beam axis

The angle of the beam axis can be changed downward if the screw indicated by the arrow is tightened, and upward 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

. Once the adjustment is complete, remove the beam-axis adjustment cap.

Fixing nut

Beam axis adjusting screw

Beam axis adjustment cap

Limit the tightening torque up to 1.2 Nm.

Setting Sensitivity

■ 2-point calibration

1 Press the SET button once without a

workpiece being placed.

2 Place a workpiece at the designated

position, and quickly press the SET button once again.

Received light intensity

If the sensitivity difference does not have enough room, “ the calibration is complete. The setting value is changed at this time, too.

Setting value

The value set at the intermediate point between the received light intensity measured when the SET button is pressed for the first time and that measured when it is pressed for the second time.

Time

++++

” flashes after

■ Maximum sensitivity setting

Set the sensitivity without a workpiece in the case of the reflective type, and with a workpiece in the case of the transmission type.

Reflective type

1 Press the SET button for three

seconds in the state as shown in

With no workpiece

Transmission type

the figure on the left.

The indication flashes when the setting is complete.

With workpiece

2 Release the SET button.

Note

In the transmission type, if the value for the maximum sensitivity setting is the same as DSC, the device will not operate correctly, so do not use the same value.

■ Full-auto calibration (not available for the LV-S31)

Let the workpiece pass while the SET button is being pressed for three seconds. (The sensitivity is set according to the received light intensity while the SET button is pressed.)

The indication flashes when the setting is complete.

3 Release the SET button.

MAX

The value is set at the intermediate point between the MAX value and the MIN value of the received light intensity measured while the SET button is pressed.

Received light intensity

MIN

Setting value

Time

Perform 2-point calibration if the setting cannot be configured as desired.

■ Zero datum calibration (not available for the LV-S31)

1 Press the SET button quickly without a

workpiece being placed.

2 Press the SET button for at least three

seconds. When the indication flashes, release the button.

3 The calibration is complete when

" " is displayed. When " " is displayed, switch the channel toggle switch to "2" and check the contents of the alarm. *The alarm contents are only displayed when "Auto" is selected for "ALrt",

the operation of control output 2 in "4. Detection mode selection". (For information about the display, see "Toggling the display" on page 9.)

Transmission/retro-reflective types

Received light intensity without workpiece

Received light intensity with workpiece (Blocked light)

0 0

Reflective type

Received light intensity with workpiece (Entered light)

Received light intensity without workpiece

0 0

In the transmission or retro-reflective type, when zero datum calibration is performed without a workpiece, the received light intensity without a workpiece is used as zero and the value indicates the amount of blocked light. The setting value is set automatically.

In the reflective type, when zero datum calibration is performed without a workpiece, the received light intensity without a workpiece is used as zero and the value indicates the amount of entered light. The setting value is set automatically.

Blocked light

Setting value

Received light intensity without workpiece

Entered light

Setting value Received light

intensity without workpiece

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