KEYENCE LB-1000W User Manual

96M11353

Instruction
Manual

Laser Displacement Sensors

LB-1000(W) Series

CONTENTS

SAFETY INFORMATION ON LB-1000 SERIES

Safety Information for LB-1000 Series .................................................... 2

Safety Precautions on Laser Product ..................................................... 3

Precautions on Regulations and Standards ............................................ 6

Part Names ............................................................................................. 7

Connections ............................................................................................ 8

Installation ............................................................................................... 9

Setting ................................................................................................... 10

Auto Zero/Output Adjustment ............................................................... 10

Measuring Range vs. Analog Output .................................................... 11

Setting Dip Switch 1 (FUZZY logic control) ........................................... 12

Setting Dip Switch 2 (Interference suppression function) ..................... 13

Setting Dip Switch 3 (Laser power control) ........................................... 14

Setting Dip Switch 4 (AUTO ZERO) ..................................................... 14

Troubleshooting .................................................................................... 15

Hints on Correct Use ............................................................................. 16

Characteristics ...................................................................................... 17

Specifications ........................................................................................ 19

Dimensions ........................................................................................... 21

Warranty ............................................................................................... 23

This manual describes how to install the LB-1000 Series as well as its
operating procedures and precautions. Read this manual carefully for
your safety.

Symbols

The following symbols alert you to important messages. Be sure to read
these messages carefully.

WARNING

CAUTION

Note

Failure to follow instructions may lead to injury.
(electric shock, burn, etc.)

Failure to follow instructions may lead to product
damage.

Provides additional information on proper operation.

General precautions

• At startup and during operation, be sure to monitor the functions and
performance of the LB-1000 series.

• We recommend that you take substantial safety measures to avoid
any damage in the event a problem occurs.

• Do not open or modify the LB-1000 series or use it in any way other
than described in the specifications.

• When the LB-1000 series is used in combination with other instru­ments, functions and performance may be degraded, depending on
operating conditions and the surrounding environment.

• 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.

2

SAFETY PRECAUTIONS ON LASER PRODUCT

1. Classification

LB-041/ LB-081/ LB-301/

LB-1001(W) LB-1101(W) LB-1201(W)
FDA (CDRH) 21CFR Part 1040.10 Class IIIa IIIb
IEC/EN 60825-1 Class 2M Class 3R Class 3B

2. Labels

FDA (CDRH) Class IIIa FDA (CDRH) Class IIIb
[LB-041/1001(W) [LB-301/1201(W)]
LB-081/1101(W)]

AVOID EXPOSURE

VISIBLE LASER RADIATION IS
EMITTED FROM THIS APERTURE

DANGER

VISIBLE LASER RADIATION AVOID
DIRECT EXPOSURE TO BEAM

SEMICONDUCTOR LASER 670nm
MAXIMUM OUTPUT 3mW
PULSE DURATION 35µSEC
CLASS IIIa LASER PRODUCT

DANGER - Visible laser radiation when open

AVOID DIRECT EXPOSURE TO BEAM

IEC Class 2M [LB-41] IEC Class 3R [LB-81]

IEC Class 3B [LB-301]

AVOID EXPOSURE

INVISIBLE LASER RADIATION IS
EMITTED FROM THIS APERTURE

DANGER

INVISIBLE LASER RADIATION AVOID
DIRECT EXPOSURE TO BEAM

SEMICONDUCTOR LASER 780nm
MAXIMUM OUTPUT 20mW
PULSE DURATION 35µSEC
CLASS IIIb LASER PRODUCT

DANGER - Invisible laser radiation when open

AVOID DIRECT EXPOSURE TO BEAM

3. Labels location

FDA Warning labels are attached to the sensor head as shown below.
When using this product in the countries and/or regions other than
U.S.A., use the IEC warning/explanatory label in the package of this
product. In this case, it can be affixed on the FDA (CDRH) warning label,
which has already been affixed to this product.

FDA (CDRH)

LB-041 LB-081

AVOID EXPOSURE

VISIBLE LASER RADIATION IS

EMITTED FROM THIS APERTURE

DANGER

VISIBLE LASER RADIATION AVOID

DIRECT EXPOSURE TO BEAM

SEMICONDUCTOR LASER 670nm

MAXIMUM OUTPUT 3mW

PULSE DURATION 35µSEC

CLASS IIIa LASER PRODUCT

LB-301

AVOID EXPOSURE

LB-041

DANGER

AVOID EXPOSURE

VISIBLE LASER RADIATION IS
EMITTED FROM THIS APERTURE

DANGER

VISIBLE LASER RADIATION AVOID
DIRECT EXPOSURE TO BEAM

SEMICONDUCTOR LASER 670nm
MAXIMUM OUTPUT 3mW
PULSE DURATION 35µSEC
CLASS IIIa LASER PRODUCT

DANGER - Visible laser radiation when open

AVOID DIRECT EXPOSURE TO BEAM

AVOID EXPOSURE

DANGER

AVOID EXPOSURE

VISIBLE LASER RADIATION IS

EMITTED FROM THIS APERTURE

DANGER

VISIBLE LASER RADIATION AVOID

DIRECT EXPOSURE TO BEAM

SEMICONDUCTOR LASER 670nm

MAXIMUM OUTPUT 3mW

PULSE DURATION 35µSEC

CLASS IIIa LASER PRODUCT

LB-081

AVOID EXPOSURE

VISIBLE LASER RADIATION IS
EMITTED FROM THIS APERTURE

DANGER

VISIBLE LASER RADIATION AVOID
DIRECT EXPOSURE TO BEAM

SEMICONDUCTOR LASER 670nm
MAXIMUM OUTPUT 3mW
PULSE DURATION 35µSEC
CLASS IIIa LASER PRODUCT

DANGER - Visible laser radiation when open

AVOID DIRECT EXPOSURE TO BEAM

3

SAFETY PRECAUTIONS ON LASER PRODUCT

4. Safety consideration

CAUTION

Use of controls or adjustments or the performance of procedures other
than those specified herein may result in hazardous radiation exposure.

1) Class IIIb/3B laser products

WARNING

Follow the instructions mentioned in this manual. Otherwise, injury to the
human body (eyes and skin) may result.

• Do not directly look at or touch the laser beam and its reflection
from a mirror-like surface.

• Do not direct the beam at other people or into areas where other
people unconnected with the laser work might be present.

• Be careful of the path of the laser beam. Make the laser path as
short as possible and be sure to terminate the laser path with a
diffusion reflector or diffusion absorber with proper reflectance
and thermal characteristics so that the laser beam does not
diffuse. (It is recommended that you install a protective enclo­sure.)

• Install the laser product carefully so that the laser beam is not
unintentionally directed at mirror-like surfaces.

• Install the products so that the path of the laser beam is not as
the same height as that of human eye.

• Wear protective eye goggles appropriate for the laser beam
wavelength.

• Do not disassemble this product. Laser emission from this
product is not automatically stopped when it is disassembled.

• Clean the aperture regularly. In addition, stop the emission of the
laser beam when cleaning.

• MPE (Maximum Permissible Exposure): 1.66mW/cm

• NOHD (Nominal Ocular Hazard Distance): 17.2 m (LB-301) from
the aperture.

2

(LB-301)

2) Class IIIa/3R laser products

WARNING

Follow the instructions mentioned in this manual. Otherwise, injury to the
human body (eyes and skin) may result.

• Do not directly look at or touch the laser beam and its reflection
from a mirror-like surface.

• Do not direct the beam at other people or into areas where other
people unconnected with the laser work might be present.

• Be careful of the path of the laser beam. Make the laser path as
short as possible and be sure to terminate the laser path with a
diffusion reflector or diffusion absorber with proper reflectance
and thermal characteristics so that the laser beam does not
diffuse. (It is recommended that you install a protective enclo­sure.)

• Install the laser product carefully so that the laser beam is not
unintentionally directed at mirror-like surfaces.

• Install the products so that the path of the laser beam is not as
the same height as that of human eye.

• Do not disassemble this product. Laser emission from this
product is not automatically stopped when it is disassembled.

4

SAFETY PRECAUTIONS ON LASER PRODUCT

3) Class 2M laser products

WARNING

Viewing the laser output with certain optical instruments designed for
use at a distance (for example, telescopes and binoculars) may pose an
eye hazard.

Follow the instructions mentioned in this manual. Otherwise, injury to the
human body (eyes and skin) may result.

• Do not stare into the beam.

• Do not direct the beam at other people or into areas where other
people unconnected with the laser work might be present.

• Be careful of the path of the laser beam.

If there is a danger that the operator may be exposed to the laser
beam reflected by specular or diffuse reflection, block the beam by
installing an enclosure with the appropriate reflectance.

• Install the products so that the path of the laser beam is not as
the same height as that of human eye.

• Do not disassemble this product. Laser emission from this
product is not automatically stopped when it is disassembled.

5. Safety features provided with the LB-1000
series

The LB-1000 series is provided with the following safety features. Make
sure these features function correctly before operating.

1. Laser radiation emission warning

A visible LED informs you that the laser beam is being emitted, or is
about to be emitted, at least 3 second after power is provided to the
controller and the sensor head.

2. Laser emission delay

Laser emission only starts after the LED has been ON for at least 3
seconds, thus decreasing the possibility of laser exposure.

3. Laser emission stop input terminals

Terminals for controlling laser emission are provided on the controller.
You can remotely control laser emission using these terminals.

4. Key-operated switch

Set to the ON position to supply power. You can lock the power switch
using the supplied key; the key can be removed only when the switch
is set to the OFF position.

5. Beam attenuator

A laser beam shield is supplied. This cover is to be attached to the
laser-beam-emitting portion of the sensor head. If an operator must
work in front of the sensor head and there is risk to the eyes from the
laser beam, be sure to attach this cover.

5

SAFETY PRECAUTIONS ON LASER PRODUCT

For use with shield:

Attach the shield to the front surface of the sensor head.

LB-041/LB-081 LB-301

For use without shield:

Place the shield as shown below, and screw in place.

LB-041/LB-081 LB-301

PRECAUTIONS ON REGULATIONS AND STANDARDS

CE Marking

Applicable Models: LB-041/LB-1001W, LB-081/LB-1101W and

Keyence Corporation has confirmed that these products comply with the
essential requirements of the applicable EC Directives, based on the
following specifications. Be sure to consider the following specifications
when using these products in the Member State of European Union.

■ EMC Directive (2004/108/EC)

• Applicable Standard EMI: EN61326-1, Class A

•

The length of the cable connected to the Sensor head or the Control­ler must be less than or equal to 30 m.

Remarks:

These specifications do not give any guarantee that the end-product with
these products incorporated complies with the essential requirements of
EMC Directive. The manufacturer of the end-product is solely responsible
for the compliance on the end-product itself according to EMC Directive.

LB-301/ LB-1201W

EMS: EN61326-1

6

PART NAMES

Controller

5

4

Beam attenuator

LASER ON alarm LED

Sensor head

1
Key-operated

power switch

2

6
7

3

1 Indicators

TIM: Timing indicator
STB: Stability indicator (3-color indicator)
BRIGHT: Excessive light quantity indicator
DARK: Insufficient light quantity indicator
LASER ON: Laser radiation emission warning

2 RESPONSE speed selector switch

Used to select response speed (0.4 ms, 10 ms, or 40 ms)

3 SENS (sensitivity) selector switch

Used to select WHITE, BLACK, or AUTO mode.

4 DIP switches (see p.11)

Used to switch to FUZZY logic control, alternating oscillation circuit,
etc.

5 Output adjustment trimmers

SPAN: Span adjustment
For adjusting output voltage level relative to target displacement.
SHIFT: Zero point adjustment
For shifting output voltage reading to zero.

6 AUTO ZERO key

For resetting the analog output to 0 V (12 mA for current output).

7 Receptacle for sensor head cable

7

CONNECTIONS

LB-1001/1101/1201

CAUTION

Be sure to confirm
the model number.

* GND terminals

4, 0, and B
are connected
internally.

■ Description of terminals

3 Earth ground terminal

5 Alarm output (NPN open-collector)

Outputs if light quantity is insufficient or excessive, or when no target
is present in the operating range.

6 AUTO ZERO input

Connecting this terminal to a GND terminal (4, 0, or B) resets the
analog voltage output to 0 V (12 mA for current output).

9 Analog current output

Current of 4 to 20 mA relative to full measuring range is output.

CAUTION

LB-1001W/1101W/1201W

CAUTION

8

CAUTION

Be sure to confirm
the model number.

* GND terminals

4, 0, and B
are connected
internally.

A Laser emission stop input

Disconnecting this terminal from a GND terminal (4, 0, or B) stops
laser emission. Use this terminal in an emergency to stop laser
emission. (Output will be retained at 12 V.)

C Synchronous (timing) input

Connecting this terminal to a GND terminal (4, 0, or B) permits
timing input. Laser emission will stop, and the analog output value just
prior to timing input will be retained. (DIP switch 2 of the controller
must be set to MAIN.)

D Synchronous (timing) output

When using 2 sensors (for thickness measurement, etc.), use this
terminal to prevent mutual interference. It allows 2 sensors to
alternately emit a laser beam at oscillation output of 30 Hz. (Set DIP
switch 2 of one controller to MAIN, and the other to SUB.)