Keyence FS-V21RP, FS-V21, FS-V21R, FS-V21X, FS-V21G User Manual
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Fiber insertion sign
Max. 100mA
0 VDC
12 to 24 VDC
Control output
Brown
Blue
Black
Load
5 to 40 VDC
Photoelectric
sensor main circuit
Overcurrent
protection circuit
96M0746
3. Mounting Unit
DUAL DIGITAL FIBER
SENSOR
FS-V21/21G/21R(P)/21X
Instruction Manual
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.
● 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 ➀,
and move down the unit in the direction shown by arrow ➁.
2) When dismounting the unit, press
the unit in the direction shown by
arrow ➀ and move up the unit in
the direction shown by arrow ➂.
● 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.
4. Connecting Fiber Unit
1) Open the dust cover in the direction shown by arrow ➀.
2) Move down the fiber lock lever
in the direction shown by arrow
➁.
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 ➃.
Check that all the accessories are ready before use.
• Accessories
Instruction manual (x 1) Mounting bracket (x 1)
2. Part Names
Operation indicator*
Digital monitor
Preset value (PV)
green indicator
Current value (CV)
red indicator
Dust cover
Fiber lock lever
Set button
Manual button
Mode button
Expansion
protective cover
Expansion
connector
Output selector
Cable
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. Adapter Appearance
ø1.3 Adapter A
ø1.0 Adapter B
• 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
Single-core fiber
Multi-core fiber
Receiver
5. I/O Cricuit
Refer to the following I/O circuit diagram when connecting the unit to peripheral devices.
● FS-V21/21G/21R/21X ● FS-V21RP
Brown
Max. 100mA
Black
Load
Overcurrent
protection circuit
Photoelectric
sensor main circuit
Control output
Blue
12 to 24 VDC
0 VDC
* The operation indicator of the FS-V21X (infrared model) will not be lit.
1
6. Making Sensitivity Settings
● 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.
Workpiece
3 s min.
The display will
flash when the
settings are
completed.
• When the setting is finished, the digital monitor will display the PV
in green.
PV (green)
CV (red)
● 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
● 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.
● 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).
Workpiece
The display will be lit
when the workpiece
is detected.
2) Locate the front edge of the workpiece in the sensing area. Then
press the set button for a minimum of three seconds.
Workpiece
Front edge
3 s min.
The display will flash
for a moment when
the setting is
finished. Then the
PV will be displayed.
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.
Workpiece
The PV will appear when
the settings are completed.
* If there is extremely little difference in sensitivity between the sens-
ing values, the display will flash on completion of tuning.
● 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 reflec-
tive 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.
7. Selecting Output
Either light-ON mode or dark-ON mode is selectable.
Press the output selector.
The display indicates that
the sensor is in dark-ON
mode. The CV will be
displayed if no buttons are
Press the manual button
within five seconds after
pressing the output
selector ➀.
operated for approximately
five seconds.
• Take the same steps to set the sensor to light-ON mode again.
8. User-friendly Functions
● Access Mode Selection
Two modes are available to the display of values and menu items.
EASY Only basic functions are displayed.
FULL All available functions are displayed.
Press 3 s min.
Completion
of selection
Press 3 s min.
• The mode is set to EASY before shipping.
Select
➁
EASY
FULL
2
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