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D12 Expert Series - TEACH-Mode Fiber Optic Sensors

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One-button programmable sensors for use with glass or plastic fibers

• Fiber optic sensors for DIN rail mounting; 10 to 30V dc operation

• Visible red (680 nm) light source; models for use with either glass or plastic fibers

• High optical sensing power when needed, also excels at low-contrast sensing

• Easy TEACH-mode programming automatically adjusts sensitivity to optimal setting*

• D12E sensors are designed for low-contrast sensing applications (switching threshold set to just
above the “dark” condition)

• D12E2 sensors set their switching threshold midway between the “dark” and “light” conditions to ig­nore subtle changes, such as web flutter

• Output may be programmed for either light or dark operate

• Fast 200 microsecond sensing response; programmable 40 millisecond pulse stretcher

• Secure one-button programming is easy to use; one button sets both TEACH and sensor configura­tion settings

• 7-segment LED bar graph indicates relative received signal strength and sensing contrast, program­ming status, and diagnostic trouble warnings

• Marginal sensing alarm

• Separate input allows remote programming by an external device, such as a switch or a process con­troller

* U.S. Patent(s) issued or pending

D12 Expert Series Glass Fiber Optic Models

Models Switching Threshold Setting Output Type Maximum Range

D12EN6FV

D12EP6FV PNP (sourcing)

D12E2N6FV

D12E2P6FV PNP (sourcing)

Models Switching Threshold Setting Output Type Maximum Range

D12EN6FP

D12EP6FP PNP (sourcing)

D12E2N6FP

D12E2P6FP PNP (sourcing)

Standard 2 m (6.5 ft) cable models are listed. To order the 9 m (30 ft) cable model, add suffix "W/30" to the cabled model number
(D12EN6FV W/30).

WARNING: Not To Be Used for Personnel Protection
Never use this device as a sensing device for personnel protection. Doing so could lead to serious
injury or death. This device does not include the self-checking redundant circuitry necessary to allow its

use in personnel safety applications. A sensor failure or malfunction can cause either an energized or de­energized sensor output condition.

Just above the “dark” condition

Midway between “dark” and “light”
conditions

D12 Expert Series Plastic Fiber Optic Models

Just above the “dark” condition

Midway between “dark” and “light”
conditions

NPN (sinking)

NPN (sinking)

NPN (sinking)

NPN (sinking)

Range varies by sensing mode and fiber
optics used; see Glass Fiber - Opposed

Mode on page 9.

Range varies by sensing mode and fiber
optics used; see Plastic Fiber - Opposed

Mode on page 11.

Overview

D12 Expert self-contained sensors offer one-button programming that provides security for your settings, yet is simple to set. D12 Expert
sensors offer two programming modes: TEACH mode and SENSOR OUTPUT CONFIGURATION mode. The D12 Expert also features

P/N 041974 Rev. D 5/2/2013

ON

7

6

5

4

3

2

1

ALM

LO

DO

40 ms

0 ms

7-Segment bar graph indicates:

• Signal strength

• Sensing contrast

• Programming status

• Diagnostic display

Output indicator

Power ON indicator

Programming push button

Max. Light Signal

D12E2 Threshold
(Excess gain = 1x)

Light Sensing

Condition

D12E Threshold
(Excess gain = 1x)

Min. Light Signal

Dark Sensing

Condition

D12 Expert Series - TEACH-Mode Fiber Optic Sensors

an advanced and comprehensive LED status display, plus sensor self-diagnostics and an alarm output to signal marginal sensing condi­tions.

Unlike competitive sensors, D12 Expert models have no exposed switches or ad­justments. All programming is accomplished using a single, sealed push button,
using quick commands. Your settings remain secure, and the sensor is sealed
against the elements of the sensing environment. Also, a separate input is provi­ded for remote programming (see Remote Programming on page 7).

Models are available for either glass or plastic fiber optics. Fiber optics are pur­chased separately to fit your exact sensing application. A few representative fiber
optic styles are listed, see Accessories on page 9 . See Banner's product cat­alog for the full selection of fiber optic assemblies.

Programming Modes

TEACH Mode

All photoelectric sensing applications (excluding analog response applications) involve differentiating between two received light levels.
The condition with the higher received light level is known as the light condition, and the condition with the lower received light level is
known as the dark condition. The difference between the two conditions is the sensing contrast.

The D12 Expert TEACH mode evaluates the light and dark sensing conditions and automatically adjusts the sensitivity to the optimal
level. Programming is fast, easy, and accurate.

D12 Expert sensors offer high excess gain needed for demanding sensing environments and/or for long-range sensing. However, unlike
standard D12 sensors, D12 Expert sensors also excel in low contrast sensing applications. When a D12 Expert sensor recognizes a low­contrast application during the TEACH mode process, the sensor’s on-board microprocessor expands the bottom end of the sensitivity
range to establish an accurate setting that allows the sensor to respond to the slight difference in received light levels.

D12E and D12E2 models set their sensing threshold points differently during the
TEACH mode process. D12E sensors automatically place the switching threshold just
above the dark condition taught to the sensor. This scheme works exceptionally well
for sensing a very small sensing contrast, where the light level represented by the
dark condition remains constant. However, in some applications, a subtle rise in the
amount of light received in the dark condition may prevent the D12E from responding
to the intended sensing event.

D12E2 models automatically set the switching threshold at the mid-point between the
light and dark sensing conditions taught to the sensor. This mid-point switching thresh­old allows D12E2 model sensors to ignore subtle changes in both the light and dark
sensing conditions. D12E2 models were first developed to ignore a small amount of
web flutter in high-speed registration color-mark-sensing applications.

At the end of the TEACH mode process, the D12 Expert bar graph indicator flashes
one to seven segments to indicate the relative sensing contrast (see TEACH-Mode

Programming on page 6), so you know how forgiving your application will be to

changing sensing conditions.

Sensor Output Configuration Mode

The Output Configuration Program mode allows you to set the sensor’s output for either no delay or for a fixed 40 millisecond pulse
stretcher (OFF-delay) for use with loads (or circuit inputs) that are too slow to react to a quick event. With no OFF delay, sensing re­sponse is a fast 200 microseconds (.0002 seconds) both ON and OFF.

The output can also be configured for either light operate (LO) or dark operate (DO). Light operate energizes the sensor’s load output
when the light condition is sensed, and dark operate energizes the load output for the dark condition.

The output configuration can be checked at any time by holding down the push button for 2 seconds. The sensor’s 7-segment LED
display indicates the current setting for 10 seconds (see #unique_12/IMAGE_57D2F1371D264F82A6C66190AD29F294 on page 6),
while the sensor continues normal operation. Factory settings for the output configuration are no delay (0 ms) and light operate (LO).

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10–30V dc

bn

bu

gy

−

+

bk

wh

Alarm

Load

Remote programming switch
(normally open)

(normally open)

10–30V dc

bu

bn

gy

−

+

bk

wh

Alarm

Load

Remote programming switch
(normally open)

(normally open)

D12 Expert Series - TEACH-Mode Fiber Optic Sensors

Specifications

Supply Voltage and Current

10 to 30V dc at 45 mA max. (exclusive of load); 10%
maximum ripple

Supply Protection Circuitry

Protected against reverse polarity and transient voltag­es

Adjustments

Push button TEACH mode sensitivity setting; remote
teaching input is provided

Indicators

Green LED lights for DC power ON and flashes when
ready for TEACH mode; 1 Hz when ready to learn first
condition; 2 Hz for second condition

Yellow LED lights for load output ON (conducting)
7-segment Moving Dot Red LED Display indicates rela-

tive received light signal strength, output program set­tings, relative contrast level and alarm

Construction

Black ABS housing with acrylic cover, stainless steel
M3 x 0.5 hardware for use with PBT polyester mount­ing bracket (supplied); the plastic fiber clamping ele­ment is acetal

Environmental Rating

Rated NEMA 2; IEC IP11

Connections

PVC-jacketed 2 m (6.5 ft) or 9 m (30 ft) cables

Operating Conditions

Temperature: -20 to +70 °C (-5 to +158 °F)
Maximum relative humidity: 90% at 50 °C (non-con-

densing)

Certifications

Output Configuration

NPN open collector (both outputs) or PNP open collec­tor (both outputs), depending on model

Load output: N.O. and programmable light- or dark-op­erate

Alarm output: N.O.

Output Rating

150 mA maximum each output; the total load may not
exceed 150 mA

Off-state leakage current: less than 10 microamps at
30V dc

On-state saturation voltage: less than 1 volt at 10 mA
dc and less than 1.5 volts at 150 mA dc

Output Protection Circuitry

Protected against false pulse on power-up and over­load of outputs (trips at 175 mA)

Output Response Time

200 microseconds ON and OFF (40 milliseconds OFF
when OFF-delay selected)

NOTE: False pulse protection circuit causes a 0.1 sec­ond delay on power-up

Output Operation Mode

Light operate or dark operate; selected by push button

Output Timing Functions

ON/OFF (no delay) or fixed 40 millisecond OFF-delay;
selected by push button

Repeatability

66 microseconds

Wiring Diagrams

NPN (Sinking) Outputs PNP (Sourcing) Outputs

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20.2 mm
(0.79")

35.5 mm
(1.40")

Fiber-retaining Clip
(Supplied with Sensor)

7-Segment Display

Output Indicator

Power Indicator

Push Button

Pull to Relase
Bracket

5.0 mm
(0.20")

Glass Fiber Receiver Port

Glass Fiber Emitter Port

Mounting Bracket

(Included)

12.0 mm
(0.47")

30.0 mm

(1.18")

64.4 mm
(2.52")

20.2 mm
(0.79")

35.5 mm
(1.40")

Fiber Gripper –
Slide up to install or
release fibers

7-Segment display

Output indicator

Power indicator

Push button

Pull to release
bracket

5.0 mm
(0.20")

Plastic fiber receiver port

Plastic fiber emitter port

Mounting bracket

(included)

Small fiber adapter

12.0 mm
(0.47")

30.0 mm

(1.18")

64.4 mm
(2.52")

D12 Expert Series - TEACH-Mode Fiber Optic Sensors

Dimensions

Glass Fiber Optic Models

Glass Fiber Installation.

1. Slide the sensor ends of the fiber(s) into the D12 Expert fiber ports as far as they will go.

2. Push firmly on the fiber ends to compress the o-rings (supplied with the fibers) and to align the grooves in the fiber ends with the
slot above the emitter port. Slide the retaining clip into the slot and press the clip until it snaps into the grooves.

Plastic Fiber Optic Models

Plastic Fiber Installation.

1. Cut fiber ends per instructions included with the fibers. Slide the fiber gripper up (open). (For 0.010 inch or 0.020 inch diameter

2. Insert the prepared plastic fiber sensor ends gently into the ports as far as they will go.

3. Slide the fiber gripper back down to lock.

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fibers, insert the small fiber adaptor into the ports as far as it will go.)