Rockwell Automation Allen-Bradley 46DFA-L2LBT1-A2, Allen-Bradley 46DFA-L2LBT1-Y4, Allen-Bradley 46DFA-L2LBT1-F4 Installation Instructions Manual
Installation Instructions
Press
Press
Original Instructions
PHOTOSWITCH DIN Rail Fiber Optic Amplifier
Catalog Numbers
Topi c Pa ge
Description 1
Features 1
Sensor Installation 1
Fiber-optic Cable Installation 2
Basic Settings and Operation 2
46DFA-L2LBT1-A2, 46DFA-L2LBT1-F4, 46DFA-L2LBT1-Y4
Description
Bulletin 46DFA PHOTOSWITCH® DIN rail fiber-optic amplifier is a
dual display that is designed for the detection of objects with the use of a
standard 2.2 mm (0.09 in.) diameter fiber-optic cable. These sensors are
ideal for assembly and packaging applications where you detect objects
in limited spaces or applications that require high speeds. Additional
sensing flexibility can be achieved when used with the wide variety of
fiber-optic tips.
Bulletin 43G glass fiber-optic cables compatible with this amplifier are
ideal for use in high temperature applications. For continuous
movement and high-flex applications, we recommend the use of the
Bulletin 43P small aperture plastic fiber cables.
Features
• Cross-talk protection enables operation of sensors in close
proximity without an impact on performance.
• Selectable PNP and NPN output using push button simplifies
inventory.
• Embedded IO-Link 1.1 Communication protocol that is offered
in all standard
• IP40 rated enclosure.
modes.
Sensor Installation
Figure 1 - DIN Rail and Dedicated Mounting Bracket
1. DIN rail mount
Hook the front tab on the rail (or
mounting bracket) and then press the
rear sec tion.
Press
3. Side mount
Install the side of the amplifier unit using
an optional mounting bracket.
2. Removal
To remove the front tab, press the unit
forward, and pull the front section up.
• Two high-visibility displays provide configuration and operation
feedback that makes the sensor easy to set up, operate, and
maintain.
• ECO (economy) display mode reduces amplifier power
consumption by 25%.
• Teachable LED intensity provides added flexibility in
applications where there’s a need to detect clear or transparent
objects.
• Fast-response output using pin 2 when connected using
IO-Link enables continuous sensor monitoring without impact
on response time needs.
• Fast response speeds of 50 µs, 500 µs, 4 ms, and 32 ms allows
operators easy adaptation of the sensor response time to their
application needs.
• Built-in totalizer feature allows operator to trigger the sensor
output once a certain count value has been reached.
Figure 2 - Amplifier Case Cover
1. To open the sensor cover
Lift the cover by pulling up the tab.
3. To attach the case cover
Place the removed cover on the amplifier
unit as shown and then press the hinge.
2. To remove the case cover
The cover can be removed by pressing
the edge of the fully opened cover.
PHOTOSWITCH DIN Rail Fiber Optic Amplifier
Multi-core fiber cable
Single-core fiber cable
When using a thin fiber-optic cable unit, use the
adapter that is provided with the fiber-optic cable unit.
L
D
Operating Indicator
(Orang e)
Setting/Teach
Indicator (Orange)
[UP/DOWN] button
• To adjust threshold
• To select settings
L: Light Operate
D: Dark Operate
indicator (Orange)
Received Light
Level (Red)
Thresho ld Level
(Green)
[SETTING/TEACH] button
• To start teaching
•To confirm a selected
setting
Normal
Operation
To cancel the
teach process,
press UP or
DOWN once.
When the teach operation is properly
completed, the set threshold is displayed.
Ready for the
second-point
teach.
Hold down SET
within 3 seconds to
complete the second-
point teach.
Hold down SET for 3
seconds or more and
the position teach
is complete.
When the teach operation is properly
completed, the set threshold is displayed.
UP
DOWN
SET
SET
Hold down SET 8
seconds or more to
enter the full auto
teach.
Hold down SET within 3
seconds to enter the
two-point teach.
Teach for the rst
point is complete.
Hold down SET for 3
seconds or more and
the maximum sensitiv-
ity teach is complete.
Hold down SET for 8
seconds or more to
to enter the teach
window mode.
Object
Present
SET
SET
Object
Present
Release
the button.
Release the button
to complete the
two-point teach.
First step
Second step
In less than 3 seconds Hold and maintain for less than 3 seconds.
In less than
3 seconds
First Step
Second step
Object
Present
Object
Present
Release
the button.
Hold down for
more than 8 seconds.
Release the button
to complete the
window mode teach.
Set two thresholds (high/low) for the 2 teaching points.
Example: →
Received light level for the 1st point: 4000 (high)
the 2nd point: 2000 (low)
→
Received light level for
Thresholds are set to 4000 and 2000.
Fiber-optic Cable Installation
Figure 3 - Installation Into Amplifier Unit
1. Flip down the lock lever.
2. Insert the fiber-optic cable unit until it
stops.
3. After inserting the fiber-optic
cable unit, flip up the lock lever
and secure the cable. Flip the lever up and
Figure 4 - Coaxial-reflection Type Fiber-optic Cable
Attach the multi-core fiber-optic cable to the receiver side and the
single-core fiber cable to the transmitter side.
Figure 5 - Thin Fiber-optic Cable
secure the cable unit.
Figure 7 - Normal Operation/Sensitivity Teach Flow
Figure 8 - Two-point Teach
This procedure sets the threshold as the average of the received light
levels at the two positions for which teaching was performed. For
example, the received light for the first point is 4000 and the received
light for the second point is 2000. The threshold is automatically set to
3000.
Basic Settings and Operation
Figure 6 - Basic Settings
Teach Proce dure
Hold down SET during normal operation, as shown in Figure 7, to start
the teaching operation. Five types of teaching are available by operation
of the SET button.
2 Rockwell Automation Publication 46DFA-IN001A-EN-P - January 2019
Figure 9 - Position/Precision Teach
Object
not Present
Release
SET
Release in less than 3 seconds. Hold and maintain for more
the button.
This procedure sets the threshold for the received light levels at the
position to be detected. For example, the received light level during
position teach is 1000 and the threshold is automatically set to 1000.
Object
Present
Positioning
SET
than 3 seconds.
Release the button
to complete the
positioning teaching.
Figure 10 - Window Teach Mode
Figure 6 - Basic Settings (continued)
D.O.
L.O.
Logic
Pin4
Pin2
L.O.
D.O.
Long 4ms
Super Long 32ms
Detecon Response me
High speed 50μs
Standard 500μs
Light Operate/
Dark Operate
Normal Operaon
Dark Operate
Light Operate
Detecon speed
50us: High speed
OFF delay
ON delay
ON/OFF delay
One-shot
500us:
Standard
4ms: Long
Press the UPan d
DOWN buons
Four mer sengs
can be selected.
Use the buon to specify between 1 and 9999 ms in increment s of1ms.
The inial seng is 1 ms.
source level adjustment
The light
source
intensity
can be adjusted bothautomacally and manually.
NOTE: The automac adjustment sets an opmum light source intensityat teaching.
Responseme can be selected.
Displays the set mer mode.
32ms: Super Long
Hysteresis adjustment
Select PNP or NPN.
IO-Link connecon is disabled when NPN is selected.
Move to next
when select mer off.
Auto
Manual
㛗ᢲࡋ
Hold
down.
Hysteresis can be adjusted between 10 and 2,000.
This seng is for Pin 4 output. Pin 2 is set
as a complementary output.
Pin 4 Output Type Selecon.
Timer Off
Light source level adjustment.
OFF delay
PHOTOSWITCH DIN Rail Fiber Optic Amplifier
Rockwell Automation Publication 46DFA-IN001A-EN-P - January 2019 3
PHOTOSWITCH DIN Rail Fiber Optic Amplifier
standard
indicaon
㸣 indicaon
Zero offset
indicaon
Rotate Display
Received light level
indicaon
Besides t he standard received light level indic aon,
the zero offsetind icaon and the % indicaon are available.
Select the Counter indicaon to enter the Counter mode
when it returns to Normal Operaon.
ECO mode
Used to reduce power consumpon.
Approx.15 seconds aer the seng, the 7-segment indicaon turns OFF.
Pressng any buon turns the display on and turns it off again aer 15 seconds.
Buon Operaon
Lock
Reset to Factory Default
Reset sensor sengs to factory default.
When the buon operaon lock is set, operaon of each buon is enabled aer the UP
buon is held down for approximately six seconds during normal operaon.
When approximately 10 seconds has elapsed without any buon operaon, the buon
operaon lock is set again.
Pin 2 Output Type Selecon.
Select PNP, NPN, or OFF (Output is disabled)
Counter Indicaon
Figure 6 - Basic Settings (continued)
4 Rockwell Automation Publication 46DFA-IN001A-EN-P - January 2019
Figure 11 - Counter Mode
IO-Link Communicaon
Index: 101 “Counter Indicaon”
Counter mode
(Normal Operaon)
Press buons
Target count indicaon
for 5 seconds
Count Val ue
Count Val ue
"Counter Mode"
indicaon for
2 seconds
Standard indicaon appears
while pressing SET.
Press UP or DOWN to change
the Target count.
Press the UP and DOWN to
return to the “Seng mode.”
TO TEACH OR SET THRESHOLD LEVEL
࣭ IO-Link Communicaon
Teaching or threshold seng can be conducted by Service Funcon
Command or Index 60.
࣭Strandard I/O
Return to the Seng mode, go to Received light level indicaon and
select Standard indicaon. Then teaching can be conducted as
described in 5-2 Teaching. Threshold can be adjusted by pressing
UP or DOWN buon.
COUNTER RESET AND OUTPUTS
In the Counter mode, a one-shot output is generated on Pin 4 and
the counter is reset when the count value reaches the target. The
one-shot me (default: 10 ms) can be set in the Timer seng of the
Seng mode. In SIO mode detecon, outputs are issued on Pin 2.
OUTPUT TIMER SETTING (One-shot output for the Counter mode)
The mer seng is reset to OFF when exing the counter mode.
COUNTER RANGE: 1 to 9999
+
Hold down SET and DOWN for 5
seconds to rest the Counter.
Object not
Present
SET
Release the button
to complete the
maximum sensitivity teach.
Hold down for approximately
3 to 8 seconds.
Object
Present
SET
Release the button
to complete the maximum sensitivity teach.
Hold down for approximately 3 to 8 seconds
Object Present
SET
Object not Present
Release the button to complete
the full auto teach.
8 seconds or more
PHOTOSWITCH DIN Rail Fiber Optic Amplifier
Figure 12 - Maximum Sensitivity Teach
The threshold is automatically set to a value larger than the maximum
received light level while the button is pressed. Example: Received light
level: 100 and the threshold is automatically set to 200.
Figure 13 - Maximum Sensitivity with Percent Indication
When selecting the percent indication for through beam types, the
threshold is automatically set to a value smaller than the minimum
received light level while the button is pressed. Example: Received light
level: 2000 and the threshold is automatically set to 1900.
Figure 14 - Full Auto Teach
The threshold is automatically set as the average of the maximum and
minimum received light levels while the button is pressed. For example,
the maximum received light level is 8000 and the minimum received
light level is 1000 during teaching and the threshold are automatically
set to 4500.
See Ta b l e 1
teaching and returns to normal operation when a teaching error occurs.
for teach errors. The sensor holds the threshold before
Rockwell Automation Publication 46DFA-IN001A-EN-P - January 2019 5
Table 1-Teac h Errors
Display Description Solution
Err 1
Err 2
The threshold to be set is too high.
• 50 µs mode: 3500 or more
• 500 µs mode: 9700 or more
• 4 ms mode: 9700 or more
• 32 ms mode: 9700 or more
The threshold to be set is too low.
• 50 µs mode: 100 or less
• 500 µs mode: 180 or less
• 4 ms mode: 50 or less
• 32 ms mode: 22 or less
Reduce the received light intensity.
• Reduce the light power manually.
• Use fiber cables of smaller diameter.
• Detect at longer range.
Increase the received light intensity.
• Increase the light power manually.
• Use fiber cables of larger diameter.
•Detect at shorter range.
Teach Time Out
If the teach process has not been completed within 30 seconds, the teach
process is canceled and the sensor returns to normal operation.
Sensor Functions
Four types of delay timer modes are available, see Figure 15.
Figure 15 - Timers
Target Status
Light ON setting
Dark ON setting
OFF
OFF
ON
ON
Target Status
Light ON setting
Dark ON setting
OFF
OFF
ON
ON
Target Status
Light ON setting
Dark ON setting
Target Present
Light ON setting
Dark ON setting
OFF
OFF
OFF
OFF
ON
ON
ON
ON
Target Present
T
Target Present
T
ON/OFF delay
Target Present
T
T
One-shot resettable
Target Present
T
OFF delay
ON delay
T
T
T
T
T
PHOTOSWITCH DIN Rail Fiber Optic Amplifier
The received light level is displayed as a percentage because the maximum
received light level during teaching is set to 100.
During teaching (the received light level is displayed).
No object is
detected
An object is
detected
Each received light level after teaching
is displayed as below.
Two-point teaching
received light level
for the second point: 1000
Two-point teaching
received light level
for the rst point: 5000
In the percentage indication:
Displays as a percentage.Maximum value during
teaching is set to 100.
Zero oset indication
Dierential value (displayed as the minimum received light level during teaching) is set to zero.
Two-point teaching
received light level
for the second point: 100
Two-point teaching
received light level
for the rst point: 555
Each received light level after teaching
is displayed as below.
Displays zero for the
minimum value
during teaching.
Displays the
dierential
value from zero.
Percentage Indication
60-BDFA-STP
Received Light Level Indication
Three types of indication are available for the received light level and
threshold.
Standard Indication
The direct values of received light level and threshold are displayed
without correction.
Figure 16 - Standard Indication
Percent Indication
The received light level and threshold are displayed in percent as the
maximum received light level during teaching is set to 100. The same
displayed values can be arranged when multiple through-beam type
units are in use.
This display may not be arranged at 100 as the received light intensity
varies depending on environmental factors.
Figure 17 - Percentage Indication
Figure 19 - Percent and Zero Offset Indication Examples
Figure 18 - Zero Offset Indication
Differential value is displayed in the received light level and threshold as
the minimum value of the received light level during teaching is set to
zero. The same displayed values can be arranged when multiple
reflective-type units are in use.
6 Rockwell Automation Publication 46DFA-IN001A-EN-P - January 2019
Crosstalk Avoidance
The sensor offers an optical unit-to-unit crosstalk avoidance feature
when multiple amplifiers are operating in close proximity. To enable this
function, the Bulletin 46DFA amplifier must be installed side-by-side
and as close as possible in the DIN rail. To be sure there’s a reliable
crosstalk avoidance, we recommend that you use the DIN rail stop
catalog number 60-BDFA-STP to firmly secure the units. This feature is
disabled when the sensor is set to operate in 50 µs mode.
Figure 20 - DIN Rail Stop Catalog Number 60-BDFA-STP
PHOTOSWITCH DIN Rail Fiber Optic Amplifier
0 (0.39)
5 (0.2)
11.5
(0.45)
3
(0.12)
3.5 (0.14)
19.5 (0.77)
16
(0.63)
2-Ø 3.2 x 5.2 (0.12 x 0.2) elongate hole
Mounting bracket
(available separately)
2-Ø3.2 (0.12)
Optical transmission window
14.5
(0.57)
10.5
(0.41)
29 (1.14)
32.4
(1.27)
72 (2.83)
77 (3.03)
29 (1.14)
36.5 (1.44)
16
(0.63)
M12 pigtail
Light Source Intensity Adjustment Feature
The light source intensity can be automatically or manually adjusted.
Automatic Adjustment
The light source intensity is automatically adjusted when teaching is
initiated. The light source level is settable to 15 steps for the 500 µs,
4ms, and 32 ms modes and 12 steps for the 50 µs mode. Larger numbers
indicate higher light intensity.
Manual Adjustment
The sensitivity teach procedure does not change the light source
intensity. Adjust the light source level manually when Teach errors occur
(see Teach Errors in Tab le 1 on p ag e 5 ).
IMPORTANT Light source intensity can be low depending on the level set
in which the light spot cannot be seen.
Figure 21 - Cat. No. 46DFA-L2LBT1-X Dimensions [mm (in.)]
Table 2-Specifications
Attribute 46DFA-L2LBT1-A2, 46DFA-L2LBT1-F4, 46DFAL2LBT1-Y4
Operating voltage 12…24V DC, Class 2/Ripple 10% or less
Power co nsumptio n
Output types
Output modes Selectable Light Operate (L.O.) or Dark Operate (D.O.)
Output Timers
Output response time Selectable: 50 µs, 500 µs, 4 ms, and 32 ms. The default setting is 500 µs.
Light source (wavelength) Four-element (AlGaInp) LED (660 nm)
User interfac e
Display
Adjustment options
Sensitivity setting
Sensitivity adjustment func tion Provided
Light source level adjustment Provided (auto/manual)
Mutual interference prevention Up to 8 units (500μs, 4 ms, and 32 ms modes only)
Protection circuit Power reverse connection/output short-circuit protection
Material Polycarbonate
Wiring options
Weight Approximately 75 g (2.64 oz)
Ambient light
Ambient temperature
Ambient humidity 35…85% RH (noncondensing)
MTTF 53 years
Protective structure IP40
Vibrat ion
Shock 500 m/s
Dielectric withstanding 1000V AC for 1 minute
Insulation resistance 500V DC mega, 20 MΩ
Normal mode: 1000 mW or less (40 mA or less at 24V)
ECO mode: 750 mW or less (30 mA or less at 24V)
NPN open collector output/Load current 100 mA (30V DC, Class 2) or less/
Residual voltage: 2V or less
PNP open collector output/Load Current 100 mA(30V DC class 2) or less/
residual voltage: 2V or less
ON delay, Off delay, ON/OFF delay, Resettable One-shot, Timer off
Delay timer: 1...9999 ms (set in millisecond)
Operating indicator, setting/teaching indicator,
L.O./D.O. Indicator: orange LED
Received light level: 4 digits in red LED (50 µs mode [(0…3800), 500μs/
4ms/32 ms mode (0…9999)]
Threshold: 4 digits in green LED (50 µs mode [(0…3500, 500μs/4ms/
32ms mode (0…9700)]
Teach and Set Button (SET)
Threshold and Configuration adjustment (UP/DOWN)
Two-point teach/max sensitivity teach/full auto teach/position teach and
window mode teach
2 m (6.56 ft) attached cable [outer dimension: 4.2 mm (0.16 in.) dia.]
2
(0.007 in.) 4 cores
0.2 mm
Illumination on light receiving surface: 3500 lx or less (incandescent
lamp)
1…5 adjacent units in operation: -25…+55 °C (-13…+131 °F)
6 or more adjacent units in operation: -25…+50 °C (-13…+122 °F)
Storage: -40…+70 °C (-40…+158 °F) (nonfreezing, noncondensing)
10…55 Hz/1.5 mm () double amplitude/2 hours each in X, Y, and Z
directions
2
/3 times each in X, Y, and Z directions
UL: Maximum ambient temperature: 50 °C (122 °F) for single use, 40
°C (104 °F) for an installation with two or more units connected.
Rockwell Automation Publication 46DFA-IN001A-EN-P - January 2019 7
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Table 3- IO-Link Specifications
Brown (1)
White (2)
Black (4)
Blue (3)
+V
–V
Teachable PNP or NPN (IO-Link)
Teachable PNP or NPN Dark Operate
Attribute 46DFA-L2LBT1-xx
Model
IO-Link version V.1.1
Communication mode COM2 (38.4 kbps)
Cycle time 3.6 ms, min
Process data length 4 Byte
Vend or ID 2
Device ID 291
2 m (6.56 ft) cable, 4-pin M12 QD on 150 mm (5.9 in.) pigtail, 4-pin M8QD
on 150 mm (5.9 in.) pigtail
Figure 22 - Micro (M12) Male QD on Pigtail and Pico (M8) Male QD on Pigtail Wiring
2
1
M12 Male
4
3
2
1
M8 Male
4
3
Waste Electrical and Electronic Equipment (WEEE)
At the end of life, this equipment should be collected separately
from any unsorted municipal waste.
Rockwell Automation maintains current product environmental information on its website at
http://www.rockwellautomation.com/rockwellautomation/about-us/sustainability-ethics/p roduct- environmental-compliance.page
Allen-Bradley, PHOTOSWITCH, Rockwell Automation, and Rockwell Software are trademarks of Rockwell Automation, Inc.
Trademarks not belonging to Rockwell Automation are property of their respective companies.
.
Publication 46DFA-IN001A-EN-P - January 2019 10004032814 Ver 00
Supersedes Publication xxxx-INxxxx-EN-P - Month Year Copyright © 2019 Rockwell Automation, Inc. All rights reserved. Printed in the U.S.A.
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