96M0746 ???

3. Mounting Unit
G DIN Track Mounting 1) As shown in the illustration, engage the claw on the lower side of the unit and the DIN rail, press the unit in the direction shown by arrow , and move down the unit in the direction shown by arrow. 2) When dismounting the unit, press the unit in the direction shown by arrow and move up the unit in the direction shown by arrow. G Using Mounting Bracket (accessory) Attach the unit to the mounting bracket, mount them together, and secure them with two M3 screws as shown in the illustration.
DUAL DIGITAL FIBER SENSOR

FS-V21/21G/21R(P)/21X

Instruction Manual
4. Connecting Fiber Unit 1. Safety Precautions

WARNING

This product is used to detect targets. Do not apply the product to safety circuits for human protection. This product is not of explosion-proof construction. Do not use the products in places with flammable gas, liquid, or dust. This product is a sensor of DC power supply type. Do not apply AC power. The product may explode or burn if 100 VAC or a higher voltage is applied.

Fiber insertion sign

1) Open the dust cover in the direction shown by arrow. 2) Move down the fiber lock lever in the direction shown by arrow. 3) Insert a fiber unit into the fiber insertion holes to a length of the fiber insertion sign (i.e., approximately 14 mm). 4) Move up and return the fiber lock lever in the direction shown by the arrow.
Check that all the accessories are ready before use. Accessories Instruction manual (x 1) Mounting bracket (x 1)
Note:If a thin fiber unit is used, an adapter provided with the thin fiber unit will be required. Unless the right adapter is connected, the thin fiber unit will not detect targets correctly.

Cable outer dia. 1.3 1.0

Adapter Adapter A Adapter B

Appearance

2. Part Names

Fiber lock lever

To connect the coaxial reflective type fiber unit to the amplifier, connect the single-core fiber to the transmitter side, and connect the multiplecore fiber to the receiver side.

Transmitter

Operation indicator* Set button Digital monitor Preset value (PV) green indicator Current value (CV) red indicator Manual button
Single-core fiber Multi-core fiber Receiver

5. I/O Cricuit

Mode button Expansion protective cover Expansion connector Output selector Cable Refer to the following I/O circuit diagram when connecting the unit to peripheral devices. G FS-V21/21G/21R/21X G FS-V21RP
Photoelectric sensor main circuit Overcurrent protection circuit Overcurrent protection circuit

Dust cover

Max. 100mA Load Black Control output

5 to 40 VDC

Photoelectric sensor main circuit

12 to 24 VDC

Brown Black Max. 100mA Load
Control output Blue 0 VDC
* The operation indicator of the FS-V21X (infrared model) will not be lit.
6. Making Sensitivity Settings
G Full Auto Calibration In this mode, the PV will be set to the mean value of the maximum and minimum incident values obtained within a certain period. Use this mode to detect moving workpieces. 1) Press the set button for a minimum of three seconds while the target workpiece is passing the sensing area of the fiber unit. While the set button is pressed, the sensitivity of the sensor will be set according to the incident values. G Manual Calibration In this mode, make manual PV settings.

PV The PV value decreases by pressing this side of the manual button.
The PV value increases by pressing this side of the manual button.
When the setting is finished, the digital monitor will display the PV in green.

PV (green)

G Two-point Calibration In this mode, the PV used will be the mean value of two sensing values obtained with and without a workpiece. 1) Press the set button for a moment without the workpiece in the sensing area (i.e., in front of the fiber unit).

Workpiece

The display will be lit when the workpiece is detected.
2) Locate the workpiece in the sensing area (i.e., in front of the fiber unit). Then press the set button for a moment.
* If there is extremely little difference in sensitivity between the sensing values, the display will flash on completion of tuning. G Maximum Sensitivity Setting If the sensing performance of the sensor drops due to dust or dirt, set the sensitivity of the sensor to maximum. 1) Press the set button without a workpiece if the fiber unit is a reflective model. Press the set button with a workpiece if the fiber unit is a through-beam model. In both cases, press the set button for a minimum of three seconds.
Reflective model Through-beam model 3 s min. The display will flash for a moment when the setting is finished. Then the PV will be displayed.
* If the sensing distance is insufficient, make sensitivity settings in the sensor in two-point tuning mode.
The display will 3 s min. flash when the settings are completed.
G Positioning Calibration In this mode, a workpiece will be detected when the front edge of the workpiece has reached a preset position. 1) Press the set button for a moment without the workpiece in the sensing area (i.e., in front of the fiber unit).

CV (red)

2) Locate the front edge of the workpiece in the sensing area. Then press the set button for a minimum of three seconds.
Front edge 3 s min. The display will flash for a moment when the setting is finished. Then the PV will be displayed.

7. Selecting Output

Either light-ON mode or dark-ON mode is selectable. Press the output selector.
The PV will appear when the settings are completed.
The display indicates that the sensor is in dark-ON mode. The CV will be displayed if no buttons are operated for approximately five seconds.
Press the manual button within five seconds after pressing the output selector.
Take the same steps to set the sensor to light-ON mode again.
8. User-friendly Functions
G Access Mode Selection Two modes are available to the display of values and menu items. EASY FULL Only basic functions are displayed. All available functions are displayed.
Press 3 s min. Select Completion of selection Press 3 s min. EASY FULL
The mode is set to EASY before shipping.
q Display Selection (Access Mode: EASY)
q Menu Selection (Access Mode: FULL)

Press Press Press

Access mode selection
Press the mode button 3 s min
Normal operation use Power mode selection Press FINE Used if the sensing distance is insufficient TURBO while the sensor is in fine mode. Used if the sensing environment is SUPER TURBO bad due to dust or other obstacles. Used if the incident is insufficient while ULTRA TURBO the sensor is in SUPER TURBO mode. Used to detect sensing objects HIGH SPEED moving at high speed. Used to detect delicate differences HIGH RESO- within a short sensing distance. LUTION Timer OFF (for normal operation use) OFF-delay timer ON-delay timer One-shot timer

Excess gain

Output Power status mode status The current value will be displayed if no keys are operated for approximately 30 s. If the timer function is set, the output status with power mode and the timer mode with set time will be displayed alternately.
The CV is displayed in percent based on the PV.

Select Press

q Display Selection (Access Mode: FULL)
Timer function setting Select Press

Other than

Output status CV

Power mode status Press

Power mode , S-APC mode setting
Press Other than Power mode ,
Timer adjustments Timer adjustment range 1~30ms 1-ms increments 30~50ms 2-ms increments 50~200ms 10-ms increments 200~500ms 50-ms increments * A maximum error of 10% of the PV. OFF (for normal operation use) Used to detect sensing objects highly precisely under clean environments.
Press Peak excess gain Bottom excess gain Press Press Peak value Bottom value
Select Press Edge detection mode selection Select

LED bar indicator

q Menu Selection (Access Mode: EASY)
Power save function setting
Press the mode button 3 s min Access mode selection Press Power mode selection Press manual button to select Press Timer function setting Press manual button to select Press Normal F I N E operation use Used if the sensing TURBO distance is insufficient while the sensor is in fine mode. Used if the sensing SUPER environment is bad TURBO due to dust or other obstacles. Timer OFF (for normal operation use) OFF-delay timer ON-delay timer One-shot timer

OFF (for normal operation use) Rising edge Falling edge OFF (for normal operation use) ECO half ECO all
Select Power mode Press Other than Power mode

Shift function setting

OFF (for normal operation use) Shift ON
Shift value adjustment Press Shift value CV
Other than Press to manual button to make timer adjustments * For timer values, refer to the corresponding table under FULL mode.
Note: Press the mode button (
Sensitivity Settings in Edge Detection Mode The sensitivity of the sensor will be set to maximum by pressing the while the sensor is in edge detection mode. Make fine sensitivity adjustments by pressing the.
) for a minimum of three seconds to return to the display of the CV from any menu selection stage. To return to the
) of the manual button ( ). previous display, press the mode button ( ) first, and press the left side ( When the power mode is set to HIGH RESOLUTION, the S-APC mode will be always turned ON. When the power mode is set to HIGH SPEED, the S-APC mode will be always turned ON in the case of the R model, or otherwise the S-APC mode will be always turned OFF.

9. Key Lock

The key lock function disables the operation of all keys.
13. List of Digital Display Items
Preset value/Current value display Timer function setting (OFF-delay timer)
Press the manual button for three seconds while pressing the mode button. Indicates that the keys are locked. Take the same step to unlock the keys.
Output selection (Dark ON)
Timer function setting (ON-delay timer)
Output selection (Light-ON)
Timer function setting (One-shot timer)
Access mode selection (EASY)
S-APC mode setting (S-APC OFF)
Access mode selection (FULL)
S-APC mode setting (S-APC ON)
10. Mode Settings before Shipping (Initialization)
The following factory settings are made before shipping.
Access mode Power mode Timer function Output selection EASY FINE OFF Light-ON

Excess gain display

Edge detection mode (OFF)

LED bar display

Edge detection mode (Rising edge)

Hold display

Edge detection mode (Falling edge)
Power mode selection (FINE)
ECO mode setting (ECO mode OFF)
Power mode selection (TURBO)
ECO mode setting (ECO half)
* Returning to factory settings: Press the five seconds while pressing the button.

button for a minimum of

Power mode selection (SUPER TURBO) ECO mode setting (ECO all)

11. Hints On Correct Use

To extend the cable length, use a cable with at least a 0.3 mm2 crosssection area. Limit the length of cable extension to no more than 100 m. (To connect several units, contact Keyence for further information.) Do not wire the amplifier line along with power lines or high-tension lines, or otherwise the sensor may malfunction or receive damage due to noise. When using a commercially available switching regulator, ground the frame ground terminal and ground terminal. Do not use the FS series outdoors, or in a place where extraneous light can enter the light receiving surface directly. Due to the individual dispersion of characteristics and the difference in fiber unit model, the maximum sensing distance or displayed value of all the units are not the same. If the sensor is used in S-APC mode for a long time, the LED indicators will be imposed with a heavy load. In that case, the sensor will be automatically set to ACC mode where the current consumption of the sensor for light emission will be constant, and END APC will be displayed. The sensor can be continuously used in this case. Replace the sensor, however, if highly precise detection is required.

Power mode selection (ULTRA TURBO)
Shift function setting (Shift OFF)
Power mode selection (HIGH SPEED)
Shift function setting (Shift ON)
Power mode selection (HIGH RESOLUTION)

Key lock setting

Timer function setting (Timer OFF)

Key unlock

Forecast maintenance warning (END APC)

12. Specifications

Model Light source Response time Display shift function Timer function Control output Supply voltage Current consumption

Rating

WARRANTIES (MUST ACCOMPANY THE PRODUCTS): KEYENCE, at its sole option, will refund, repair or replace at no charge any defective Products within 1year from the date of shipment. Unless stated otherwise herein, the Products should not be used internally in humans, for human transportation, as safety devices or fail-safe systems. EXCEPT FOR THE FOREGOING, ALL EXPRESS, IMPLIED, AND STATUTORY WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT OF PROPRIETARY RIGHTS, ARE EXPRESSLY DISCLAIMED. KEYENCE SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL OR OTHER DAMAGES, EVEN IF DAMAGES RESULT FROM THE USE OF THE PRODUCTS IN ACCORDANCE WITH ANY SUGGESTIONS OR INFORMATION PROVIDED BY KEYENCE. In some jurisdictions, some of the foregoing warranty disclaimers or damage limitations may not apply.
FS-V21*1 FS-V21G FS-V21R (P) FS-V21X*1 Red LED Greed LED 4-element red LED Infrared (950 nm) 250s (FINE)/500s (TURBO)/1ms (SUPER TURBO)/ 4ms (ULTRA TURBO)/500s (HIGH RESOLUTION)/ 50s (HIGH SPEED) Max. 1999 (variable) Timer OFF, OFF-delay timer, ON-delay timer, and oneshot timer (1 to 500 ms) NPN open collector with 100 mA max at 40 V with a max*2, Residual voltage of 1 V. DC12-24V 10% with a maximum ripple (peak to peak) of 10%
S-APC S-APC mode turned ON or when mode OFF the HIGH SPEED mode is selected. Other than Normal 580 mW 720 mW R model ECO half 480 mW 600 mW ECO all 430 mW 550 mW R model Normal 650 mW 720 mW ECO half 530 mW 600 mW ECO all 480 mW 550 mW Model Mode
KEYENCE CORPORATION 1-3-14, Higashi-Nakajima, Higashi-Yodogawa-ku, Osaka, 533-8555, Japan PHONE: +81-6-6379-2211 FAX: +81-6-6379-2131 AFFILIATED COMPANIES KEYENCE CORPORATION OF AMERICA KEYENCE (THAILAND) CO., LTD. PHONE: 201-930-0100 PHONE: 02-369-2777 FAX: 02-369-2775 FAX: 201-930-0099 KEYENCE DEUTSCHLAND GmbH PHONE: 06102-36 89-0 FAX: 06102-36 89-100 KEYENCE (UK) LIMITED PHONE: 01908-696900 FAX: 01908-696777 KEYENCE FRANCE S.A. PHONE: 76 FAX: 77 KEYENCE SINGAPORE PTE LTD. PHONE: 6392-1011 FAX: 6392-5055 KEYENCE (MALAYSIA) SDN BHD PHONE: 03-252-2211 FAX: 03-252-KEYENCE TAIWAN CO., LTD. PHONE: 02-2627-3100 FAX: 02-2798-8925 KEYENCE (HONG KONG) CO., LTD. PHONE: 3104-1010 FAX: 3104-1080 KEYENCE INTERNATIONAL TRADING (SHANGHAI) CO., LTD. PHONE: 021-68757500 FAX: 021-68757550 KEYENCE KOREA CORPORATION PHONE: 02-563-1270 FAX: 02-563-1271 Printed in Japan

Environment resistance

Incandescent lamp: 20,000 R max. x Sunlight: 30,000 R max. x Ambient temperature -10C to 55C (No freezing) Relative humidity 35% to 85% RH (No condensation) 10 to 55 Hz, 1.5-mm double amplitude, Vibration each in X, Y, and Z directions for two hours Shock resistance 500 m/s2 Three times each in X, Y, and Z directions Housing material Unit and cover are both polycarbonate made Size W 9 mm x L70 mm x H 30 mm Weight Approximately 80 g (including 2-m cable) Ambient illumination
*1. The model is sold only in Japan. Consult your KEYENCE representative if the model is required outside Japan. *2. The maximum current will be 20 mA in the case of expansion.

Dual Display Digital Fiberoptic Sensor

FS-V20 Series

Dimensions

FS-V21R(P)/FS-V21G

9 0.35'' (Maximum when the cover is opened) 92 3.62'' 4 0.16'' 0.15'' 3.9, 3-core (Brown/Blue/Black) x 0.34 mm2 Cable length: 2 m 6.6'

unit: mm inch

When the mounting bracket (included in the FS-V21R(P)/FS-21G is attached: 29.4

1.16''

3 0.12''

MAX 135o 22.9

0.90''

(16) (0.63'') 3.8

0.15'' (13) (0.51'') 2 x 3.4, 0.13''

(37.4) (1.47'')

29.3 (34) 1.15'' (1.34'')

1.01''

1.00''
spot facing: 6 0.24'', d=2.7 0.11'' 2 x (4.4 0.17'' x 3.4 0.13''), spot facing: 7 0.28'', d=4 0.16''

Rear of mounting bracket

6.7 0.26''

0.81''

35.4 1.39'' 69.8 2.75''
0.1'' 2.6 single-core x 0.34 mm2 Cable length: 2 m 6.6' *

9 0.35''

8 min. 0.31'' 15 0.59''
FS-V22R(P)/FS-22G/FS-V20R
When several units are connected:

End unit

1.22'' End unit 2.
9 0.35'' (Maximum when the cover is opened) 92 3.62''
3 0.12'' 29.3 (34)1.15'' (1.34'')

(13) (0.51'')

4 0.16''
* The FS-V20R does not have connecting cables.

7 min. 0.28''

6 End unit ( included in the FS-V22R(P)/FS-V22G 0.24'' 6

0.24''

0.24'' 1. The FS-V21R(P)/FS-V21G/FS-11V(P)/ T1(P)/M1(P)/V1(P)/PS-T1(P)/LV-21A(P)/ CZ-K1(P) is mounted in. (The PNP models cannot be connected to the NPN models.) 2. When using expansion units, be sure to use the end unit (accessory to the expansion unit).
No.of Units L(mm) 9 0.35'' 0.71'' 1.06'' 1.42'' 1.77'' 2.13'' 2.48'' 2.83'' 3.19'' 3.54'' 3.90'' 4.25'' 4.61'' 4.96'' 5.31'' 5.67'' 16

DIN-rail mounting

(22.6) 20.8 (0.89'') 0.82'' 9.2

0.36''

35.4 1.39'' 53.8

2.12''

Visit our website for other Keyence products at
Specifications are subject to change without notice.
KEYENCE CORPORATION OF AMERICA Corporate Office 50 Tice Blvd., Woodcliff Lake, NJ 07677, U.S.A. Phone: 201-930-0100 Fax: 201-930-0099 E-mail: keyence@keyence.com
Boston Office Phone:781-453-2244 Fax:781-453-2255 New Jersey Office Phone:201-291-4000 Fax:201-291-8860 Pennsylvania Office Phone:610-768-8993 Fax:610-337-1067 Charlotte Office Phone:704-423-0070 Fax:704-423-0066 Atlanta Office Phone:770-951-1222 Tampa Office Phone:813-998-9886 Cleveland Office Phone:216-464-7530 Columbus Office Phone:614-799-3400 Cincinnati Office Phone:513-554-1227 Michigan Office Phone:734-591-9922 Indianapolis Office Phone:317-471-3551 Chicago Office Phone:847-969-0001 Minneapolis Office Phone:952-924-9779 St. Louis Office Phone:314-275-9174 Texas Office Phone:972-733-6790 Denver Office Phone:303-756-5242 Phoenix Office Phone:602-225-2400 Fax:602-225-2425 Portland Office Phone:503-699-0500 Fax:503-699-8400 Northern California Office Phone:925-225-1550 Fax:925-225-1440 Los Angeles Office Phone:310-851-8635 Fax:310-851-8681
Fax:770-951-1958 Fax:813-998-9887 Fax:216-464-7540 Fax:614-799-3401
Fax:513-554-1229 Fax:734-591-1722 Fax:317-471-3550 Fax:847-969-0453
Fax:952-249-9143 Fax:314-275-9175 Fax:972-733-6791 Fax:303-756-8301

V I S U A L2

Dual Display Digital Fiberoptic Sensor FS -V20 Series
KEYENCE CORPORATION, 2002
FS20V-KA-C-1-0202 Printed in Japan

State-of-the-Art

KEYENCEs Digital Fiberoptic Sensors continue to develop in pursuit of State-of-the-Art performance
Dual Display Digital Fiberoptic Sensor FS-V20 Series

Most Powerful Beam

The FS-V20s newly developed processor delivers up to 4 times the power of conventional KEYENCE fiberoptic sensors. This enhanced power ensures stable detection in harsh conditions, such as when the detecting distance is too short due to a dark-colored target or when the sensor needs to be mounted in a dirty or dusty environment. The FSV20s ULTRA High Power overcomes such challenges, eliminating sensing problems that arise from insufficient power.
Up to 1800mm ( Thrubeam )

Page 6

Longer detecting distance in harsh environments

4 times higher

FS-V20 KEYENCEs conventional model

Excess gain 250 s

Dual Digital Display Monitor
Simple and reliable settings
Once again KEYENCE has pulled ahead of everyone else in fiberoptic sensor development. The FS-V20 Digital Fiberoptic Sensor incorporates a Dual Digital Display Monitor, letting you view both the Preset and Current Values. It also offers simpler and more reliable settings than any other fiberoptic sensor. (Patent pending)

Industrys First

Page 4
Highest Speed and Accuracy

Manual button

Response Speed: 50 s

Page 7

Without being influenced by temperature or environmental changes
The FS-V20 is the worlds first through-beam sensor that detects gold wires as thin as 0.005mm in diameter, and the built-in digital amplifier ensures the industrys highest response speed of 50 s. Not only fast, the FS-V20 provides the highest precision as well.

Preset Value

5 times faster
KEYENCEs conventional model

Current Value

Response 250 s time
Examples of how the FS-V20s Dual Digital Displays can be configured.
Preset Value and Current Value Peak Value and Bottom Value Mode Status Display And more
Stable Detection Over a Longer Lifetime
Revolutionary devices for more stable detection
Fiberoptic sensors must maintain even light emissions, since any fluctuation will lead to unstable detection. The FS-V20s 4-element red LED gives it a long lifetime, while the S-APC circuit keeps light emissions even. (Patent pending)

Light emission

Page 8
Stable and Longer Lifetime

FS-V20

Operation 250 s time
Industrys First Dual Digital Display Monitor
Benefits Provided by Dual Digital Display Monitor

EASY ACCESS

Preset Value and Current Value
Preset Value can be changed while monitoring the amount of light received.
Unlike conventional sensors, the FS-V20 does not make you choose between Preset Value and Current Value display. This means that you can make Preset Value changes while monitoring the amount of light received, which facilitates reliable sensor configuration. Preset Value and Excess Gain (%) can also be displayed during operation.

Peak Value and Bottom Value
The Hold function makes it possible to display both peak and bottom values simultaneously.
Unlike single-monitor sensors, the FS-V20 does not make you choose one display at the expense of another. Its Dual Digital Display Monitor is ideal for the detection of high-speed targets or for checking fluctuations in received light intensity.

Peak value

Bottom value
Controlling the subtle tension of transparent film
Counting chip components travelling at a high speed

Set button

Automatic calibration setting
Dual monitor in green (for Preset Value) and red (for Current Value)

Mode button

Monitor and operation mode selection
Bright and clear operation indicator
Lit with output turned ON
Easy-to-use manual button
Manual sensitivity adjustment

Output selection button

Light-ON or Dark-ON output selection

Power mode selection

FINE mode TURBO mode SUPER mode

Timer function setting

Mode Status Display
Easy-to-understand, simple operation. The Dual Digital Display Monitor displays current amplifier mode.
Conventional, single-monitor models do not allow you to check amplifier mode status while making setting changes. The FS-V20s Dual Digital Display Monitor gives you full access to amplifier status for easy setup, even for operators new to the product.

Power Saving Function

Ensures lowest power consumption in its class.
The digital display turns OFF if the sensor is not operated for 30sec. At this time power consumption will not exceed 480mW if a number of sensor are used in combination.
Auto reset when the sensor is operated manually.
Auto Display-OFF Function (480mW Max.)
OFF delay timer On delay timer One shot timer
ECO-HALF mode provides a low energy option with display.
The red indicator is lit at the time of detection.
The green indicator is lit when nothing is detected.
The display will shut OFF after 30sec.
Industrys Most Powerful Beam
Ensures easy optical axis adjustments and stable detection while in operation.
Industrys Highest Speed and Accuracy
Provides a wider range of applications than conventional models with the industrys highest speed and accuracy.
A newly developed processor ensures the high power of the FS-V20 Series. High power is important because it helps ensure stable detection, and this enables the FS-V20 to provide reliable detection in all environments where thin fibers are used, even in poor or deteriorating conditions. 4 times the power of conventional fiberoptic sensors

Reference level of received light
ULTRA SUPER 2X TURBO 2X FINE Ultra High Power LED
The amount of received light is approximately four times as much as conventional models.
In addition to its ULTRA High Power mode, the FS-V20 has 2 other sensing modes that solve problems such as the failure of sensitivity settings due to slow response and received light saturation. These modes expand the FS-V20s sensing capabilities while allowing it to avoid these problems.
Newly developed processor
A sensing distance of 1500mm is achieved by the standard FU-7F Thrubeam Fiber Unit.
Industrys Longest Detecting Distance
Advantages and benefits of ULTRA High-Power
Longer detecting distance
When detecting dark-colored targets with reflective-type sensors, the sensitivity must be set as high as possible to obtain a greater detecting distance. Insufficient sensor power may lead to unstable detection. The FSV20s ULTRA High Power ensures both a longer detecting distance and a wider margin for stable detection.
Ultra High-speed Mode- High Speed
The industry's highest response speed of 50s for digital sensors

Industrys Highest Speed

The industry-best response speed of 50s is achieved without adversely affecting the FS-V20s easy-to-configure sensor. The unit detects up to 10,000 targets per second, while making it possible to monitor the digital value settings for the targets. * Conventional models have a response speed of 250s and perform a maximum of 2,000 counts per second.
Detecting dark colored targets at a long distance
Conventional model A max. of 2,000 counts per second
Use in harsh environments
Long usage gradually affects a sensors sensitivity as dust and dirt accumulate on the sensor head. Without enough power, the sensor may fail in harsh conditions where water, oil, or mist are present. The FS-V20s ULTRA High Power means that stable detection is not at the mercy of harsh environmental conditions.
A max. of 10,000 counts per second

8000 10000

Detecting register marks moving at a high speed
Close-proximity Mode- High Resolution
Detecting labels in a dusty environment

New Theory

With no saturation in close proximity
Saturation makes it difficult to make sensitivity adjustment with conventional high-power digital sensors (i.e., the incident level is set to 4,095) when sensing targets in close proximity. The FS-V20s high-resolution mode expands the maximum incident level to 65,520 from the conventional 4,095 for sensing close targets. (Patent pending.) Sensing at a maximum of 16 times as close as conventional models

15000 65000

With no workpieces

Transparent workpiece

Easy optical axis adjustment
It is difficult to find the optimum optical axis position, especially when using a thin-type fiber unit. The FS-V20s ULTRA High Power ensures both a longer detecting distance and easy optical axis adjustment, even with thin-type fiber units.

Conventional model

Saturated at 4095

With no variation

Detection impossible
Detecting connector pins with thin-sleeve type heads

Detection possible

Stable Detection Over a Long Lifetime
Provided with two new devices for stable, high-precision detection
Simple Control and Display
Surpassing conventional control methods
Dedicated MANUAL set button
It is essential for fiberoptic sensors to be able to maintain stable light emissions for long periods of time. Fluctuations or decreased light emissions over a long period may compromise highprecision detection. The FS-V20s 4-element red LED and S-APC function solve these problems where conventional sensors fail.

LED emitter

Light sensory element to monitor amount of received light
The FS-V20 was designed in pursuit of higher functionality and performance while maintaining simple control and display features. Keyences long history of fiberoptic sensor development enabled us to give the FS-V20 an exquisite balance of easy-to-use controls and features.
Dedicated AUTO set button

Feedback circuit

4-Element Red LED

New Technology

EASY Access

3-Element LED

Amount of light emission Amount of light emission
Conventional 3-element LEDs characteristically lose brightness gradually with extended usage. This means the sensitivity is also decreasing little by little. However, Keyence s 4-element red LED features a longer service life without light emission deterioration.

4-Element red LED

The EASY access setting is ideal for standard applications while the FULL access setting enables all selectable features.
All sensor manufacturers work to incorporate higher functionality and improved performance when developing new models. To these pursuits Keyence adds the quest for uniqueness. The EASY access setting makes it possible to skip a variety of functions and provide a simple display showing the power selection and timer setting modes only. (Patent pending.) Full Access mode
Preset Value/Current Value Excess gain/Current Value Internal setting display

Timer setting

Access

Decreasing Time

Long Lifetime Time
Easy setting Full setting

S-APC Function

Selectable

EASY Access mode

Power selection
Ensures high-precision detection in clean environments.
Changes in temperature or environmental conditions may adversely affect high-precision detection. The S-APC (Selectable Auto-Power Control) feature maintains constant light emission by regulating current input to the light emission element.

Simple Sensitivity Settings
Detection of transparent film seams

S-APC Features

Maintaining constant light emission
Conventional models do not regulate light emission, leading to fluctuations in the amount of received light over a long period of time. The S-APC feature continuously monitors and corrects light emission.

Amount of light emission

Allows direct settings and adjustments with no mode changes. Full Automatic Calibration
When detecting falling or minute targets, it is very difficult to make sensitivity adjustments when the sample targets are fixed. Fully automatic calibration is unique to the digital-type sensor, allowing you to generate a suitable sensitivity setting just by letting the sample target pass through the sensing area.

Conventional model Time

S-APC Time
Detection of dropping parts With background

S-APC may be deactivated

Since the S-APC feature is not required for typical use, the FS-V20 allows you to turn the S-APC function ON and OFF as necessary.
Maximum Sensitivity Settings
The sensitivity of the FS-V20 can be set to the maximum level without background detection. This feature makes it possible to set the sensitivity without detecting targets, while suppressing the influence of dust on sensor operation.
Ease of Forecast Maintenance and Troubleshooting
The END APC indicator for forecast maintenance will start flashing if an excessive load is imposed on the LED.
Background Background is not detected Sensor turns ON when the target enters the sensing area
Highly Reliable Expansion
Keyences established 1-Line system is also featured on the FS-V20 Series
Wide Variety of Photoelectric Sensors
The sensor saves wiring with no accessories or additional man hours required. By supplying power through the connector on the side, each sensor will save two wires that are required when using conventional sensors.
Dedicated Expansion Connector for 1-Line System
Power is supplied through the connector, and expansion units can be connected through a single line.
Sensor Variations for 1-Line Wire-Saving Connection System

Select the type best suited to your application

FIBER UNIT VARIATIONS

ToughFlex

Armored ToughFlex

A flexible stainless steel jacket protects the fiber from daily wear.

Area Detection

10 mm width area detection, thrubeam type 15 mm width area detection, reflective type
Reflective type: Thrubeam type:

FU-67G FU-77G

FU-67/67V
Even if the target vibrates, the 10 mm width detection area allows it to be detected stably. The minimum bend radius is 2 mm thanks to the use of ToughFlex fiber.

15mm 15mm

The wide beam area ensures stable detection of targets that are difficult to detect. Its original optical system has realized a truly compact highperformance sensor. Combined with the FS-V20, the FU-11 eliminates mutual interference. Adjustable focus, side-view lens
Resists entanglement or shock More flexible than conventional spiral tubes Minimum bend radius: 10mm

Super ToughFlex

Multi-core Unit
Flexible wiring without any bending restrictions or optical attenuation.

Small Beam Spot

Adjustable small beam spot type

613cores

FU-67V FU-77V

FU-67G

10mm to 30mm
0.9 to 3.5mm The beam spot diameter is freely adjustable between 0.9 and 3.5 mm. Designed for easy installation and adjustment.

F -5HA

8mm to 30mm

0.5 to 3.0mm

Space-saving, side-view lens Produces a small beam spot at a long distance. The beam spot diameter is adjustable between 0.5 and 3.0 mm.

Thin Sleeve

The 613-core fiber (42 m dia.) is nearly impervious to excessive bending. Super ToughFlex will not break even when sharply bent.

High-Flex

Thin-sleeve, Thrubeam type High-flex, reflective type

FU-77/77V

Easy to handle with a minimum bending radius of 2 mm and minimal optical attenuation.

FU-75F

FU-69X
Provides higher flexibility than an electric wire. R4 models are resistant to repeated bends.

217cores

FU-67 FU-77

FU-77G

Thin sleeve with a diameter of 0.82 mm Long detecting distance: 300mm

Narrow Beam

Long-distance, Side-view type

Heat Resistant Type

Heat resistant fiber type
The 217-core fiber (66 m dia.) is hardly affected by excessive bending.
ToughFlex will not break even when sharply bent.

3200mm 3200mm

FU-81C
Resists temperatures up to 350C (+662F) Moreover, the fiber unit is protected with a spiral tube.
ToughFlex and Super ToughFlex fiber cores are used for many Keyence's fiber units.

High-power unit with a side-view lens built in. Flexible fiber that can be laid out with ease.
ULTRA Long Distance Detection
For Semiconductor/Liquid Crystal Detection

FU-61 FU-71

Long detecting distance, definite-reflective type
Super narrow-beam, Side-view type

1800mm

ULTRA High-Power , resistant to dirty and dusty environment ULTRA Long detecting distance up to 900mm(FU-61), 1800mm(FU-71) Durable M6 stainless steel housing

F U- 38R

Even a circuit board with deflection can be detected easily at a distance of 0 to 17 mm.
Suitable for wafer mapping Super narrow-beam: aperture angle of 2.

Liquid Level

Long detecting distance, high-power type

30mm to 1000mm

FU- 40

Aperture angle: 8

Long detecting distance, entirely Teflon-sheathed type
High-power reflective type resistant to dust Narrow-beam type for precise aiming at the target Armored ToughFlex fiber unit is available (model: FU-40G)

F U- 92

Usable in most environment due to its Teflon-sheathed body. Resists oil and chemicals.
ToughFlex tube-mountable liquid level detection type
ToughFlex immersion type liquid level detection type

F U- 95Z

Mountable to various tubes ranging from small to large diameters. Uses a ToughFlex fiber

FU- 93Z

Teflon-sheathed immersion type Uses a ToughFlex fiber.

A Variety of Fiber Units

Thrubeam

Type Shape

ULTRA TURBO

SUPER TURBO

HIGH RESOLUTION

HIGH SPEED )

Reflective

Detecting distance

ULTRA TURBO, UPER TURBO, TURBO, FINE
HIGH RESOLUTION, HIGH SPEED
Smallest detectable Minimum bend object [mm]*2 radius [mm]

Features

2m Free cut
ULTRA TURBO, SUPER TURBO, TURBO, FINE
Smallest detectable Minimum bend object [mm]*3 radius [mm]

Standard

320(250) 15 M6

760(640) 640(500)

1500(1000)

(130) (95)

Long detecting distance

100(80)

200(160)

300(240)

500(400)

(40) (40)

Long detecting distance 0.005 (gold wire)

(60) (60)

Lens F-1, F-2, F-4, F-5

(180) (160) (64) (60)

16 M150(120)
450(360) 370(300) 300(240)

1100(880) 900(720)

1800(1500)
Ultra Long detecting distance
A minimum bend radius of 4 mm
17 MM100(80) 200(160) 300(240) 150(120) 300(240)

450(360)

900(720)
Ultra Long detecting distance Long detecting distance

(280) (230) (64) (60)
Wafer-mapping Heat resistance: 300C(572F), glass fiber Heat resistance: 100C(212F), plastic fiber Heat resistance: 105C(221F), plastic fiber Heat resistance: 180C(356F), plastic fiber Teflon-sheathed
15 M150(120) 370(300) 300(240)

600(480)

FU-84C

Lens F-1, F-2

1000(800)

(96) (90)

Heat resistant

250(200)

700(560) 500(400)

FU-86Z

Lens F-1, F-2, F-5

320(250)

640(500)

760(600)

1200(1000)

800(640)

(80) (80)
200(160) 5 (22) 5 (23) 350(280) 500(400) 400(320)
Oil-proof, chemical proof
2500(2000) 2200(1700) 1100(880) 870(700) 700(560)

3600(2900)

(440) (300)

1800(1400)

(150) (100)
Teflon-sheathed, side-view
*1. Each detecting distance in parentheses shows the data when the S-APC function is ON. S-APC will be always turned ON when the high-resolution or high-speed mode is selected. *2. The smallest detectable object was determined at the optical detecting distance and sensitivity setting. *3. Lenses can be attached only to screw-mount type heads. *4. Detecting range varies depending on detecting distance and target diameter. *5. 3600 is assumed as maximum because the fiber cable has the length of 2m.
Detecting distance *1 *2 [mm]
ULTRA TURBO,SUPER TURBO,TURBO,FINE HIGH RESOLUTION, HIGH SPEED
Coaxial, 0.4 mm spot using F-2HA

FU-35FZ

ULTRA TURBO, SUPER TURBO, TURBO, FINE HIGH RESOLUTION, HIGH SPEED

FU-95Z

(8) (8)

0.4 mm spot

using F-2HA Armored

Liquid-level

65(52) 45(36) 25(20)

130(100)

(10) (10)

Coaxial with

FU-2303
Transparent tube of 4 to 26 mm dia.

For mounting to a tube

45(36) 35(28) 20(16)

90(70)

Thin sleeve ToughFlex

FU-63Z

Liquid (except for milky white liquids)

55(44) 40(32) 25(20)

110(90)
Liquid level detection by sensor head immersion. Teflonsheathed
Liquid level detection by sensor head immersion. Teflon covered for high durability against chemicals. FU-94Co heat resistant up to 200 C (392oF)

FU-93Z

15 M25(20) 20(16) 15(12)

50(40)

(4) (4)

FU-49X

FU-94C
Min. bend radius of sleeve: 10 mm Min. bend radius of sleeve: 10 mm
MM15 60(50) 180(140) 120(100)

(24) (20)

12(10) 10(8) 8(6)

36(30)

Narrow-beam, smallbeam spot

FU-22X

SPECIFICATIONS

Lens for Thrubeam type

Type Configuration

FU-7F,86

TURBO *1

Specifications
Type Model Light source Response time Output selection NPN PNP Main unit 1-line expansion unit 0-line expansion unit FS-V21R FS-V21G FS-V22R FS-V22G FS-V20R FS-V21RP FS-V22RP Red LED Green LED Red LED Green LED Red LED 250s (FINE)/500s (TURBO)/1ms (SUPER TURBO)/4ms (ULTRA TURBO)/500s (HIGH RESOLUTION)/50s (HIGH SPEED) Light-ON/Dark-ON selectable
Operation indicator: Red LED Dual digital monitor: Dual 7-segment display Preset Value (4-digit green LED indicator) and Current Value (4-digit red LED indicator) illuminated together. Current Value range: 0 to 65520; Excess gain: 0P to 999P Hold function: Possible to display both peak and bottom hold values. Excess gain displayed (85% to 115% in 7 steps) Bar LED monitor: Possible to display together with Current Value

Applicable fiber units

ULTRA TURBO, SUPER TURBO,T URBO, FINE
1000(800) 800(640) 400(320) 750(600) 600(480) 300(240) 670(530) 540(430) 260(200) 550(440) 440(360) 220(180)

1600(1300)

(160) (130)

(120) (110)

1040(830)
Space-saving, side-view type

(100) (90)

Heat resistance: 70C (158F)

FU-77,77V FU-78 FU-84C

Display indicator Detection mode Display shift function Mode

880(700)

(85) (80)

3600(3400) 3600(2800)

3600(3600)

(720) (650)

3600(3000) 3200(2600)

(640) (550)

FU-77,77V FU-84C FU-78

1200(950) 1500(1200)

3600(2800) 3000(2400)

(600) (500)

Greatly increases the detecting distance. Aperture angle: 15

Timer function

Heat resistance: 300C (572F)

Variable range Accuracy

1 to 500ms
Light intensity/rising edge/falling edge Max. 1999 (variable) Timer OFF/OFF-delay timer/ON-delay timer/One-shot timer, selectable 1 to 30ms ( in 1ms increments ), 30 to 50ms ( in 2ms increments ), 50 to 200ms ( in 10ms increments ), 200 to 500ms ( in 50ms increments ) 10% of the Preset Value
Control output Power supply Normal Current ECO half consumption*1 ECO all Ambient illumination Ambient temperature*2 Relative humidity Vibration Shock resistance Housing Weight (including 2-m cable)
Ultra-long detecting distance
3600(3600) 3600(3600) 3000(2400) *3 3600(3600) 3600(3600) 2500(2000) *3 3600(3600) 3600(3200)

(1200) (1000)

FU-77,77V

(1000) (800)

(800) (650)
Greatly increases F-4 the detecting Heat distance. resistance: Aperture 70C angle: 8 (158F)
*1. S-APC will be always turned ON when the high-resolution or high-speed mode is selected. S-APC is by default set to OFF in any other mode. *2. If more than one unit is used together, the ambient temperature varies with the conditions below. Mount the units on the DIN rail with mounting brackets and check that the output current is 20 mA or less. 3 to 10 Units: 10C to 50C ( 14 to 122F ) 11 to 16 Units: 10C to 45C ( 14 to 113F )
*1. Each detecting distance in parentheses shows the data when the S-APC function is ON. S-APC will be always turned ON when the high-resolution or high-speed mode is selected. *2. When using the F-1 at a temperature of 70C(158F) or more, specify the "Heat-resistant F-1". *3. "3600" is assumed as maximum because the fiber cable has the length of 2m.
I/O Circuit Lens for Reflective type
Long detecting distance, Long detecting distance, high Focusing lens high focusing lens focusing lens
( ULTRA TURBO SUPER TURBO TURBO FINE HIGH RESOLUTION Beam spot diameter HIGH SPEED )

Environment resistance

3000(2400) 2400(1900)

(480) (400)

NPN or PNP 100 mA max. (40VDC max), Residual voltage : 1Vmax. 12 to 24VDC 10% , ripple: 10% max. S-APC OFF: 650 mW max. ( 27mA max. at 24VDC ), S-APC ON: ( 720mA max. at 24VDC ) S-APC OFF: 530 mW max. ( 22mA max. at 24VDC ), S-APC ON: ( 600mA max. at 24VDC ) S-APC OFF: 480 mW max. ( 20mA max. at 24VDC ), S-APC ON: ( 550mA max. at 24VDC ) Incandescent lamp: 20,000 lux max. , Sunlight: 30,000 lux max. 10C to 55C ( 14 to 131F), No freezing 35 to 85%, No condensation 10 to 55 Hz, 1.5-mm double amplitude, each in X, Y, and Z directions for two hours 500 m/s2 Three times each in X, Y, and Z directions Polycarbonate Approx. 80 g Approx. 45 g Approx. 30 g

FS-V21R/FS-V21G

FS-V22R/FS-V22G
100mA max. Black Load (Control output) Blue
Photoelectric sensor main circuit

12 to 24 VDC 5 to 40 VDC

100mA max. 5 to 40 VDC Load

Configuration

FU-35FA FU-35FZ
72(72) 72(72) 72(72) 72(72) 72(72) 72(72) 152(152) 152(152) 152(152) 152(152) 65(52) 55(44)

F-2HA*3

Overcurrent protection circuit

(Control output)

Front edge 4.3
FU-21X FU-35FA FU-35FZ FU-35FA

(152) (152)

45(36)

35(28) 30(24) 25(20)

0.4mm (within the detecting of 0 to 20mm)

Black Blue

100mA max. Load

Front edge 7.4

FS-V21RP

FS-V22RP

12 to 24 VDC 0V 0V

12 to 24 VDC

100mA max. 0V Load
Adjustable beam spot, side-view

8.Thickness: 5.6 mm

8 to 30(8 to 30) 8 to 30(8 to 30) 8 to 30(8 to 30)

0.5 to 3.0mm

FU-21X FU-35FA FU-35FZ FU-21X
8 to 30(8 to 30) 8 to 30(8 to 30) 8 to 30(8 to 30) 8 to 30(8 to 30) 353(353) 353(353) 353(353) 353(353) (353) (353) 2.0mm(with FU-35FA/35FZ) 1.0mm(with FU-21X)

F-5HA*3

FS-V21G and FS-V22G Detecting Distance

With Lens

ULTRA TURBO SUPER TURBO TURBO FINE HIGH RESOLUTION HIGH SPEED
Long detecting distance, focusing lens

Model F-1 F-2 F-4 F-2HA

Fiber Unit FU-77 (V)

Front edge 10.6

HIGH SPEED
*1. Each detecting distance in parentheses shows the data when the S-APC function is ON. S-APC will be always turned ON when the high-resolution or high-speed mode is selected. *2. Standard target: White mat paper. *3. F-2HA/3HA/5HA cannot be used in ULTRA Turbo mode. ( except F-5HA with FU-21X )
FU-7F FU-77 (V) FU-6F FU-67 (V) FU-35FZ FU-22X FU-10

10 to 30*

FU-35FA (Z),-2303 FU-21X F-3HA FU -35FZ, -2303
* The beam spot diameter is variable between 0.9 and 3.5 mm.