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

Detecon Response me

High speed 50μs

Standard 500μs

Light Operate/
Dark Operate

Normal Operaon

Dark Operate

Light Operate

Detecon speed

50us: High speed

OFF delay

ON delay

ON/OFF delay

One-shot

500us:

Standard

4ms: Long

Press the UPan d

DOWN buons

Four mer sengs

can be selected.
Use the buon to specify between 1 and 9999 ms in increment s of1ms.
The inial seng is 1 ms.

source level adjustment

The light

source

intensity

can be adjusted bothautomacally and manually.

NOTE: The automac adjustment sets an opmum light source intensityat teaching.

Responseme can be selected.

Displays the set mer mode.

32ms: Super Long

Hysteresis adjustment

Select PNP or NPN.
IO-Link connecon 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 seng is for Pin 4 output. Pin 2 is set
as a complementary output.

Pin 4 Output Type Selecon.

Timer Off

Light source level adjustment.

OFF delay

PHOTOSWITCH DIN Rail Fiber Optic Amplifier

Rockwell Automation Publication 46DFA-IN001A-EN-P - January 2019 3