Datasheet E3MC Datasheet (OMRON)



typ

e

lif

i

urose

y

(

)

thereco

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tye(SeeNote

2.)fibe

r

RGB Color Sensor E3MC

RGB Color Sensor Detects Subtle
Color Differences—Most Advanced
Color Sensor In the Industry



LED light source insures ease of
operation and long life



No separate light source is required



Remote control of color setting from PC
or PLC



4-color memory



4-output models available



3 models: lensed, precision fiber-optic,
versatile standard fiber-optic



IP66



Rugged die-cast metal housing

Ordering Information

RGB COLOR SENSOR



Type Appearance Sensing distance Spot

Lensed

Precision
fiber-optic

p

General­purpose
fiber-optic

pe

t

The shape of the

p

amp

er sectionis
thesameasforthe
E3MC-(M)A.

E32-CC200

E32-T16

0 50 100

60±10 mm

(See Note.)

0 50 100

20±4mm

(See Note.)

Standard sensing distance

5mm

SeeNote2.

200 mm

diameter
12 mm 1

3mm 1

Varies with
the recom­mended
fiber.

No. of
outputs

4

4

1

-

.

4

Output Part number

NPN E3MC-A11
PNP E3MC-A41
NPN E3MC-MA11
PNP E3MC-MA41
NPN E3MC-X11

PNP E3MC-X41

NPN E3MC-MX11

PNP E3MC-MX41

NPN E3MC-Y11
PNP E3MC-Y41
NPN E3MC-MY11
PNP E3MC-MY41

Note: Refer to the

Specifications

section of this data sheet.

E3MC

y

f

ACCESSORIES (ORDER SEPARATELY)



E3MC

Item Appearance Description
Sensor cable (2-m

Replacement cable

Part number (length)
E39-C1 (2M)

cable is included with
the E3MC)

E39-C1 (5M)
E39-L114

Mounting bracket

5-meter cable

-- -- -- Used for die-cast body mounting
(See Note.)

-- -- -- Used for DIN-rail mounting

E39-L115

Note: Included with sensor.

Specifications

Type

Light source Red (680 nm), green (525 nm), and blue (450 nm) LEDs
Sensing distance 60±10 mm 20±4mm

Spot diameter 12 dia. 3dia.
Supply voltage 12 to 24 VDC±10%, ripple (p-p) 10% max.

Current consumption 100 mA max.
Output Load current: 100 mA max.

Response time 1-output model:

Timer function 40-ms OFF-delay timer (ON/OFF switch selectable)
Color detection Four colors stored in teaching operation with manual threshold level adjustments.
Color detection mode

Mode selection

Lensed Precision fiber-optic type General-purpose fiber-optic type
E3MC-A1, E3MC-MA1 E3MC-X1, E3MC-MX1 E3MC-Y1, E3MC-MY1

Varies with the recommended

iber. Refer to Engineering Data

for details.

NPN open collector output with a maximum residual voltage of 1.2 V for the E3MC-(M)A11, E3MC-(M)X11,
and E3MC-(M)Y11.
PNP open collector output with a maximum residual voltage of 2.0 V for the E3MC-(M)A41, E3MC-(M)X41,
and E3MC-(M)Y41.
L.O./D.O., switch selectable

Standard mode: 3 ms max.
High-speed mode: 1 ms max. (switch selectable)

4-output model:

Standard mode: 6 ms max.
High-speed mode: 2 ms max. (switch selectable)

Mode C: RGB ratio detection; adapts to changes in conditions
Mode I: RGB light intensity detection; highest precision

Switch selectable

E3MC-11/-41
Mode A (Factory-set) Mode B (for remote teaching)

Output (white)
Not used (gray)

Bank selection input1 (yellow)
Bank selection input 2 (green)
External synchronous input(pink)

VCC(brown)
0 V (blue)

E3MC-M11/-M41
Mode A (Factory-set)

Colors in parenthesesare lead wire colors.

Output 1 (white)
Output 2 (gray)

Output 3 (yellow)
Output 4 (green)
External synchronous input(pink)

VCC(brown)
0 V (blue)

Colors in parenthesesare lead wire colors.

(This table continueson the next page.)

Mode B (for remote teaching)

Colors in parenthesesare lead wire colors.

Colors in parenthesesare lead wire colors.

Output (white)
Answer-back output (gray)
Remote control input(yellow)
Not used (green)
External synchronous input(pink)
VCC(brown)

0 V (blue)

Output 1 (white)
Output 2 (gray)

Output 3 (yellow)
Answer-back output (green)
Remote control input(pink)
VCC(brown)
0 V (blue)

3 outputs

E3MC

y

E3MC

Specifications Table

Type

-- continued from previous page
Lensed Precision fiber-optic type General-purpose fiber-optic type

E3MC-A1, E3MC-MA1 E3MC-X1, E3MC-MX1 E3MC-Y1, E3MC-MY1

Remote control input
(See Note 1.)

The following control is performed according to the control signal input.

E3MC-11/-41

Bank selection, remote teaching, or threshold selection

(mode B only)
Answer-back output

E3MC-M11/-M41

Channel selection, remote teaching, or threshold selection

Load current: 100 mA max.

NPN open collector output with a residual voltage of 1.2 V max.

E3MC-(M)A11/-(M)X11/-(M)Y11

PNP open collector output with a residual voltage of 2.0 V max.
(mode B only)
External synchronous

Response time: 1 ms max. (The 4-output model is not available in mode B.)

E3MC-(M)A41/-(M)X41/-(M)Y41

input
Color detection 4 banks selectable (either by bank selection input or by using the SELECT button)

Input response time for bank selection: 50 ms max.

Indicator Operation indicator (orange LED), 4-level bank indicator (green LED, See Note 3.), 7-level threshold

indicator (red LED), 8-level detection indicator (green LED), and four channel indicators (orange LED, See

Note 4.)
Protection Protection from reversed power supply connection and output short-circuit
Ambient light immunity

Incandescent lamp: Illumination on optical spot: 3,000xmax.

Sunlight: Illumination on optical spot: 10,000xmax.
Ambient temperature Operating: --25°Cto55°C(--13°F to 131°F) with no icing
Relative humidity Operating: 35% to 85% (with no condensation)
Permissible fiber

bending radius

--- 10 mm min. Varies with the type of selected
fiber (see specific fiber
specifications)

Insulation resistance 20 MΩmin. (at 500 VDC)
Dielectric strength 1,000 VAC, 50/60 Hz for 1 min
Vibration resistance 10 to 55 Hz, 1.0-mm double amplitude or 150 m/s2(approx. 15G) for 2 hrs each in X, Y, and Z axis.

0.75-mm double amplitude or 100 m/s

Shock resistance 500 m/s2(approx. 50G) for 3 times each in X, Y, and Z axis.

300 m/s

2

(30G) when using a Mounting Bracket.

2

(10G) when using a Mounting Bracket.

Enclosure rating IEC IP66 (with protective cover in place)
Material Case: Zinc die-cast

Cover: PES

Case: Zinc die-cast
Cover: PES

Case: Zinc die-cast
Cover: PES

Fiber head: ABS

Weight (with 2-m cable) Approx. 350 g Approx. 400 g Approx. 350 g

Note: 1. Refer to

Remote Teaching

.

2. Definition of Sensing Distance
Refer to the following table and the diagram to the
right.

Item
Color discrimination

mode
Response time Standard mode
Tolerance (θ) 15
Detectable colors 11 standard colors

3. 1-output models only: E3MC-A/-X/-Y

E3MC-(M)A
Mode C

°



E3MC-(M)X

°

10



4. 4-output models only: E3MC-MA/-MX/-MY





E3MC-(M)A

Sensing target



E3MC-(M)X
Fiber Head

Sensing target



E3MC

Application Examples

DETECTING INTERNAL YELLOW



RESIN PLATES OF A BATTERY

PATTERN POSITIONING



E3MC

DISCRIMINATING FRONT AND BACK



SIDES OF OBJECTS

STANDARD SENSING OBJECTS



Color
(11standard colors)

White N9.5
Red 4R 4.5/12.0
Yellow/red 4YR 6.0/11.5
Yellow 5Y 8.5/11.0
Yellow/green 3GY 6.5/10.0
Green 3G 6.5/9.0
Blue/green 5BG 4.5/10.0
Blue 3PB 5.0/10.0
Blue/purple 9PB 5.0/10.0
Purple 7P 5.0/10.0
Red/purple 6RP 4.5/12.5

Munsell color notation (See Note.)

DETECTING LABELS



Note: Munsell Color Notation: A color classification system that assigns three values to each color: Hue, Value, and Chroma. System

was developed by Albert Munsell and published in 1905.

E3MC

EngineeringData

E3MC

SENSING DISTANCE VS.



COLOR DIFFERENCES
(TYPICAL)



Sensing distance(mm)

Red

White

SENSING DISTANCE VS.



Yellow

Yellow/red

Yellow/green

Green

Blue

Blue/green

COLOR DIFFERENCES
(TYPICAL)

E3MC-(M)X



ANGLE



CHARACTERISTICS
(TYPICAL)

ANGLE



CHARACTERISTICS
(WHEN TEACHING AT
AN INCLINATION OF 15)

E3MC-(M)A(X Direction)E3MC-(M)A

Detection level

Sensing target:
Blue/Green
30 x 27mm

Detection
level

Purple

Red/purple

Blue/purple

ANGLE



Angle (°) Angle (°)

CHARACTERISTICS
(TYPICAL)

E3MC-(M)A(Y Direction)

Detection level



Sensing target:
Blue/Green
30 x 27mm

ANGLE
CHARACTERISTICS

(WHEN TEACHING AT

Detection
level

AN INCLINATION OF 10)

E3MC-(M)X(X Direction) E3MC-(M)X(Y Direction)

Sensing target:

Detection level

Blue/Green

Sensing distance(mm)

Red

White

GENERAL-PURPOSE FIBER-OPTIC TYPE



Yellow

Yellow/red

Yellow/green

Green

Blue

Blue/green

Purple

Red/purple

Blue/purple

30 x 27mm

Recommended Fiber: Diffuse Fiber-Optic

The following optical fibers are recommended for use with the
E3MC-(M)Y.

Part number
E32-DC200 5mm
E32-CC200

(See Note 2.)
E32-D32L

(See Note 3.)
E32-D11L 5mm

Sensing distance (See Note 1.)

5mm

4.5 mm

Sensing target
Blue/Green

Detection level

30 x 27mm

Detection
level

Angle (°) Angle (°)

Detection
level

Note: 1. The E3MC-(M)Ydiscriminates eleven colors at the

above distances. For a typical example, nine colors are
discriminated at a sensing distance of 12 mm.

2. The fiber to be inserted into the emitter is indicated
with white lines. Insert the amplifier fiber into the lower
emitter section.

3. The fiber to be inserted into the emitter is indicated
with dotted yellow lines. Insert the amplifier fiber into
the lower emitter section.

E3MC

g

t

ical

characteristics

t

ical

characteristics

E3MC

Sensing Distance of a Diffuse Fiber

E32-DC200, etc.

Sensing distance

Sensing target

AVAILABLE OPTICAL FIBERS



In addition to the previous recommended optical fibers, the following optical fibers are available for the E3MC-(M)Y. Refer to the

E3X-NH Datasheet (E258-E1)

Part number
E32-TC200A
E32-TC200B
E32-TC200C
E32-TC200D
E32-T12L Not different from

E32-T14
E32-T11
E32-T11R Through-beam

for the following optical fibers in detail. Optical fibers other than the following are not available.

Sensing method Remarks
Through-beam Not different from

(R1 fiber)

the E32-TC200 in

p

op
characteristics.

the E32-T11L in
optical
characteristics.

---

---

.

RECOMMENDED FIBER: THROUGH-



BEAM FIBER

The following optical fibers are recommended for use with the
E3MC-(M)Y.

Part number
E32-TC200 30 mm
E32-T11L 60 mm
E32-T16 200 mm
E32-T17L 1.1 m

Note: The E3MC-(M)Ydiscriminates red, blue, and yellow

films at the above distances.

Part number Sensing method Remarks
E32-DC200B
E32-DC200C
E32-DC200D
E32-D12
E32-D11
E32-D11R Through-beam

E32-G14 Groove ---

Sensing range (See Note.)

Diffuse Not different from

(R1 fiber)

the E32-DC200 in

p

op
characteristics.

---

.

OPERATING RANGE CHARACTERISTICS (TYPICAL)



E32-DC200 E32-CC200

Sensing target: Blue/Green38 x 38 mm

Distance Y (mm)

Distance X (mm) Distance X (mm) Distance X (mm)

Sensing target: Blue/Green
38 x 38mm

Distance Y (mm)

E32-D32L

Sensing target: Blue/Green38 x 38 mm

Distance Y (mm)

E3MC

E3MC

E32-D11L Sensing Target:

Red, Blue, and Yellow Films

Sensing target: Blue/Green38 x 38 mm

Distance Y (mm)

E32

-TC200

E32

-T11L

E32

-T16

E32

-T17L

Distance X (mm)

Sensing target: Filmin Red (rosco/UX, scarlet)
Sensing target: Film in Yellow (rosco/UX, straw)
Sensing target: Film inBlue (rosco/UX, skyblue)

The above colorfilms are made by the r osco company.

CHROMATIC SENSITIVITY (TYPICAL)



Sensing T arget: Bottle
E32-T17L

Distance X (mm)

Green
bottle

Brown
bottle

Dark­brown
bottle

Sensing target: 63-diagreen bottle
Sensing target: 60-diabrown bottle
Sensing target: 63-diadark-brown
bottle

Distance X (mm)

E3MC

Nomenclature

E3MC ALL MODELS



Operation Indicator (Orange)

Illuminated when output is ON.
Under mode B (single-output
models), the indicator will be
illuminated when mode B is
active or when the mode selec­tor is set to TEACH.

Bank Indicator (Green)

1-channel models. Displays
selected bank.

Channel Indicator (Orange)

4-channel models. Displays
selected channels. Illuminated
when the output of each channel
is ON.

TEACH Button

Stores target color. On 4-channel
models, used to check the number
of channels that are indicated by
both the operation indicator and
channel indicator.

E3MC

Detection Level Indicator (Green)

Displays similarity level between
registered and detectable colors.

Tolerance #1

Threshold Indicator (Red)

Displays threshold level.

Tolerance #7

SELECT UP Button, SELECT DOWN Button

Bank selection
Threshold adjustment

Mode Selector

Selects TEACH, ADJ, or RUN mode.

Function Switch (see details below)

Color discrimination mode selection
Response time selection
OFF-delay timer setting
Conformity/Non-conformity output selection
(See glossary—Light/Dark Operate)

Function Switch

The following settings are possible in RUN or ADJ mode. (Each pin of the function switch is factory-set to the upper position.)

(6 ms)

3ms

C

Note: Figures shown in parentheses are for the 4-output models.

1ms

TMR

(2 ms)

Color Discrimination Mode Selection (Mode C is Recommended for Normal Applications)

Mode C: Color discrimination is performed according to R (red), G (green), and B (blue) ratio of the reflection light even

if the sensing objects fluctuate up and down within the rated sensing range.

Mode I: Color discrimination is performed according to RGB light intensity of reflection light. This mode ensures more

delicate color discrimination than mode C.

Response Time Selection

3 ms (6 ms): The E3MC can stably detect minute differences of color. Set the response time to 3 ms for usual
1 ms (2 ms): The E3MC will be in quick-response operation. Set the response time to 1 ms if high-speed response is

OFF-delay Timer Setting

---: No OFF-delay timer is set.
TMR: A 40-ms OFF-delay timer is set for control output.

Conformity/Non-conformity Output (See glossary—Light/Dark Operate)

=: Output is ON when the detected color coincides with the registered color.

: Output is ON when the detected color does not coincide with the registered color.

≠

applications.
required.

E3MC

Operation

OUTPUT CIRCUITS



Connector Pin Arrangement For All Models

Note: Pin 8 is not used.

E3MC-11 with NPN Output (1-output Models)

Brown

Load

White

Control output

E3MC

Gray

Yellow

Green

Pink

Blue

Load

Not used/Answer-back
output

Bank selection input1/
Remote control input

Bank selection input2/
Not used

External synchronous
input

12 to 24 VDC

E3MC-M11 with NPN Output (4-output Models)

Brown

Load

White

Control

Load

output

Gray

Control

Load

output

Yellow

Green

Pink

Blue

Control
output

Control
output

External
synchronous input

Load

12 to 24 VDC

E3MC

E3MC-41 with PNP Output (1-output Models)

Brown

E3MC

Pink

Green

Yellow

Gray

White

Blue

Control
output

Load

External synchronous input

Bank selection input
2/Not used

Bank selection input1/
Remote control input

Note used/Answer
back output

Load

12 to 24 VDC

E3MC-M41 with PNP Output (4-output Models)

Brown

Load

Control
output

External
synchronous input

Control
output

Control
output

Load

Load

Load

12 to 24 VDC

Pink

White

Gray

Yellow

Green

Blue

Control
output

SETTINGS



E3MC-A/E3MC-X



---- Single-Output Models

1. Bank Selection

Set the Mode Selector to the TEACH mode, and then select the BANK using the SELECT button.

To select banks 1 -- 4, first slide 3-position
switch to “TEACH.”

Then press SELECT buttons,
scrolling through banks 1 -- 4.

E3MC

2. Color Registration

Sensor

Registered object

E3MC

OK

Position the registered object at the

No Good
detection point and press the TEACH
button.

3. Threshold Adjustment (If Required)

Sensor

Sensing target

Press the SELECT button in ADJ mode with or without
the object to be detected positioned at the detection
point.

4. Operation

Detection operation is performed in RUN mode.
ON/OFF status of each bank is displayed on the
bank indicators.

All the red threshold indicators
will flash if the E3MC receives
excessive light.



Detection Level and Tolerance

All the detection level
indicators are illuminated.

As the detected color becomes closer to the registered
color, the number of illuminated detection level indicators
increases. When the E3MC is in conforming output mode,
the control output of the E3MC will be ON if the detection
level exceeds the threshold level and OFF if the detection
level does not exceed the threshold level.

Set the threshold to a higher level for highly-precise color
discrimination and to a lower level to ignore minor tint
differences or dirt retention.

Detection level

Tolerance

Operation indicator
illuminated:

Control output ON

Threshold
value

Operation indicator
not illuminated:

Control output OFF

Detection level

Threshold
value

Bank Indicators

E3MC

E3MC

E3MC-MA/E3MC-MX



---- 4-Output Models

1. Channel Selection

Set the Mode Selector to the TEACH mode.
Then select the channel using the SELECT button.

2. Color Registration

Sensor

Registered object

No Good

All the red threshold
indicators will flash if
registration has not been
completed.

Position the registered object at the detection point
and press the TEACH button.

3. Threshold Adjustment (If Required)

Sensor

Sensing object

Press the SELECT button in ADJ mode with or without the object
to be detected positioned at the detection point. The channel
selected in the TEACH mode or RUN mode will become the
channel for the ADJ mode.

OK

All the detection level
indicators are illuminated.



Detection Level and Tolerance

As the detected color becomes closer to the registered color, the
number of illuminated detection level indicators increases. When
the E3MC is in conforming output mode, the control output will be
ON if the detection level exceeds the threshold level and OFF if
the detection level does not exceed the threshold level.

Set the threshold to a higher level for highly-precise color
discrimination and to a lower level to ignore minor tint differences
or dirt accumulation.

Detection level

Operation
indicator:
illuminated
Control output:
ON

Tolerance

Threshold
value

Operation
indicator: Not
illuminated
Control output:
OFF

Detection level

Threshold
value

E3MC

4. Operation

For indicating detection level and threshold value for other channels

Press the SELECT button.

For checking which channel
is indicated with the operation
indicator.

Press the
TEACH button.

The detection operation is performed in RUN
mode. ON/OFF status of each channel is
displayed on the channel indicators. Doubly
displayed channels (operation indicator and
channel indicator) can be checked and
selected by pressing the TEACH button and
selected by pressing the SELECT button.

DETECTION LEVEL AND INDICATOR



Indicator

Displays the channel whose detection
level is currently indicated in the
channel indicator for three seconds.

E3MC

Displays the selected channel for
three seconds and indicates
detection level and threshold value
of the selected channel.

Detection

1 2 3 4 5 6 7 8

level

TECHNICAL GUIDE



If the E3MC does not detect metal or glossy objects accurately, change the mounting angle of the E3MC so that it will not receive regular
reflection light directly reflected from the objects.

The mounting angle of the E3MC-Xcan be adjusted to approximately 10° with the mounting holes.



E3MC-X

Object to bedetected

E3MC-(M)Y
(reflective optical fiber)

Sensing target

0to20



°

On the other hand, sensing targets such as metal or transparent
plastic cases may be detected by allowing regular reflection.

E3MC-A



Detection of White, Gray, or Black Objects

When registering white, gray, or black objects, change the color
discrimination mode to “Mode I” to achieve a more stable color
discrimination.

External Light

The E3MC may malfunction if it directly receives external light
interference. Provide a cover to shut-out such external light
interference.

Object to bedetected

Note: To avoid malfunction, provide a cover to shut out direct

external light interference to the E3MC.

E3MC

E3MC

Adjustment of Sensing Distance of General-purpose
Fiber-optic Type

Unlike the E3MC-A or E3MC-X, the E3MC-Y may require
adjustment of its sensing distance depending on the reflection
rate. This also applies to the through-beam type.

REGISTERED COLOR SELECTION (BANK SELECTION INPUT)



Single-Output Models ONLY (E3MC-A

/E3MC-X

/E3MC-Y

Bring the fiberhead as
close as possibleto the workpiece
and conduct teaching.

)

OK: All Detection Level
Indicators (green) illuminated.

NG: All Threshold
Indicators (red)
flashing.

Feed workpieces and
check if theyare detected.

Excessive light. Move the
head away fromthe work­piece and finda position
where teaching isaccepted.
This position is the optimum
distance.

The E3MC in RUN mode offers bank selection with external inputs by combining bank selection input 1 (yellow) and input 2 (green). The
selected bank is active when the indicator is illuminated.

NPN (E3MC-A11/-X11/-Y11)

Bank

Input 1 Input 2
1 OPEN OPEN
2 GND OPEN
3 OPEN GND
4 GND GND

EXTERNAL SYNCHRONOUS INPUT FUNCTION (See Note.)



PNP (E3MC-A41/-X41/-Y41)

Bank

Input 1 Input 2
1 OPEN OPEN
2 Vcc OPEN
3 OPEN Vcc
4 Vcc Vcc

The measurement results will be directly output to the control output if the input from the external synchronous input terminal (pink) is set
to OFF. The output will hold the previous status if the input of the external synchronous input terminal is set to ON. External synchronous
input is valid in RUN or ADJ mode.

Condition

NPN (E3MC-11) PNP (E3MC-41)
ON (Status on hold) GND Vcc
OFF (Result output) OPEN OPEN

Sensing target

Discrimination result

External synchronous input

Control output

Same color

Output on hold

This status can be on
hold by an external
synchronous input. It
will be released by
setting the external
synchronous input to

Different color

Same color

Same color

Output on hold

This status can be on
hold so that unwanted
color objects can be
ignored while they are
passing the sensing
range.

OFF.

Note: External Synchronous Input: Latches sensor output in existing state when ESI is on. For example, if sensor output is on when ESI

is on, the output(s) will remain on until ESI is turned off, regardless of target presence or absence.
For NPN models, ESI is turned on by connections to 0V.
For PNP models, ESI is turned on by connections to +V.

E3MC

REMOTE TEACHING (REMOTE CONTROL FUNCTION)



Mode Setting

When using the remote control function of the Sensor for remote
teaching, be sure to set the Sensor to mode B.

Setting Method

Apply power to the Sensor while pressing the SELECT DOWN
button and TEACH button together.

Checking Method

Mode A or B of the E3MC will be displayed for 3 s after mode
setting. When the mode selector is set to TEACH, the mode can
be checked from the operation indicator. The indicator will be lit
when the mode is set to B.

Mode A:
Operation indicator
is OFF.

Mode B:
Operation indicator
is ON.

Remote Teaching Method

Function 1: Remote teaching with manual input through an
external connection

Short-circuit the remote control input for 1.5 s or more to either of
the following terminals according to the E3MC model.

NPN type
(E3MC-11)

PNP type
(E3MC-41)

Function 2: Remote control of teaching and bank selection
through the PLC or PC

Input one of the following signals as a remote control input. There
will be an answer-back output for 0.3 s if the signal is correctly
received.

No.

1 Bank 1

2 Bank 2

Short-circuit to GND (blue) terminal.

Short-circuit to Vcc (Brown) terminal.

Control signal

E3MC-

selected.

selected.



E3MC

E3MC-M

Channel 1
selected.

Channel 2
selected.



3 Bank 3

Note: 1. The Sensor is set to mode A before shipping.

4 Bank 4

2. The current mode selected does not change after the
Sensor is turned OFF.

3. The remote control function is available in RUN mode

5 Teaching of

and ADJ mode only.

4. The E3MC-Mhas three outputs in mode B and no
external synchronous input will be accepted.

5. The same switching procedure can be used for chang­ingtomodeA.

The following is an example of a timing chart of teaching after
bank selection.

The following is an example of a timing chart of teaching after bank selection.

An interval of

0.6 s min.

Bank
select­ing.

Input detection.

Teaching specified
Sensing
restarts.

in bank 1.

Answer-back output with
normal signal reception.

Remote control input

Answer-back output

ON

OFF

ON

OFF

Input detection.

Operates in
bank 2.

Bank 1 designated.

00000

00100

END

Teach­ing.

selected.

selected.

Not used.

selected.

Teaching of

Channel 3

selected
bank.

TIM000
#XXXX

TIM000

00100

Sensing
restarts

Answer-back output withteaching OK.
(No output ifteaching fails.)

selected
channel.

TIM000 set value
No.1: 0003
No.2: 0006
No.3: 0009
No.4: 00012
No.5: 00015
Input: 00000
Output: 00100
Others: Work bits

E3MC

E3MC

Function 3: Remote control of threshold adjustments
through the PLC or PC

Input either one of the following signals as remote control input.
There will be an answer-back output for 0.3 s if the signal is
correctly accepted.

No.

Control signal All E3MC models

6 Threshold 1 selected.

7 Threshold 2 selected.

8 Threshold 3 selected.

9 Threshold 4 selected.

10 Threshold 5 selected.

11 Threshold 6 selected.

12 Threshold 7 selected.

The following is an example of ladder programming for setting
control signals. Full control of the E3MC is possible using this
function.

00000

05000

T000

05001

T001

05002

05000

05002

END

TIM000

TIM001

TIM002

05000

TIM000
#XXXX

05001

TIM001
#YYYY

05002

TIM002
#ZZZZ

00100

TIM000, TIM001, TIM002
set values

(XXXX, YYYY, ZZZZ)
No.1: (0000, 0000,0003)
No.2: (0000, 0000,0006)
No.3: (0000, 0000,0009)
No.4: (0000, 0000,00012)
No.5: (0000, 0000,00015)
No.6: (0003, 0003,0003)
No.7: (0003, 0006,0003)
No.8: (0003, 0009,0003)
No.9: (0003, 0003,0006)
No.10: (0003, 0006,0006)
No.11:(0003, 0003, 0009)
No.12: (0006, 0003,0003)

Input: 00000
Output: 00100
Others: Work bits

Threshold and Display

Threshold 1
Threshold 2
Threshold 3
Threshold 4
Threshold 5
Threshold 6
Threshold 7

Note: 1. The permissible error of each signal pulse is ±0.1 s

max.

2. A minimum interval of 0.6 s is required between
signals.

3. Threshold 4 is set after teaching.

E3MC

Dimensions

Unit: mm (inch)

RGB COLOR SENSORS



E3MC-A
E3MC-MA





Receiver

Emitter

30.4

(1.19)

30

(1.18)

60 (2.36)

Optical axis

17.3

(0.68)

15.2 (0.60)

80 (3.14)

39

(1.53)

43

(1.69)

98 (3.85)

(1.10)

28

28

(1.10)

Two, M2.6 x 6

Four, M 5 holes on both
sides (depth: 5.5)

40.2

(1.58)

M12
connector

15.2

(0.59)

Mounting Dimension

Side Mounting

Two, 5.5-dia holes

28

(1.10)

Bottom Mounting

53.2

(2.09)

Four, 5.5-dia holes

28

(1.10)

E3MC

21 (0.82)

E3MC-X
E3MC-MX

30.4

(1.20)

30

(1.18)





Receiver
Emitter

(0.16)

Sensing face
(9.1 x 22.9)

30

(1.18)

4

15.25

(0.60)

Fiber Head
Mounting Dimensions

10.4

(0.41)

8.9

(0.35)

8.5

(0.33)

3.3-dia. mounting holes

Optical axis

20

(0.79)

30

(1.18)

Sensing head
(heat-resistant ABS)

Two, R1.65
mounting holes

11.5(0.45)

Two, M3 holes

11.5

(0.45)

6-dia. optical fiber
(standard length: 1m)

Four,M5 holes (depth: 5.5)

98

(3.86)

80

(3.15)

39

(1.54)28(1.10)

43

(1.69)

28

(1.10)

Four,M5 holes (depth: 5.5)

Mounting Dimensions

For Side Mounting -­Amplifier Unit

Two, M2.6 x 6

Four, M 5 holes on both
sides (depth: 5.5)

53.2

(2.09)

40.2

(1.58)

15.2

(0.59)

M12 connector

Two, 5.5-dia holes

28

(1.10)

Bottom Mounting

Four, 5.5-dia holes

21 (0.82)

28

(1.10)

E3MC

Unit: mm (inch)

E3MC

E3MC-Y
E3MC-MY







ACCESSORIES

Sensor I/O Connector
E39-C1 2M
E39-C1 5M

Receiver section

Emitter section

21 (0.83)

15.2

(0.60)

30.4

(1.20)

30

(1.18)

12.6

(0.50)

6

(0.25)

dia.

7.9

(0.31)

Two, 2.4 dia.

98

(3.86)

80

(3.15)

39

(1.54)28(1.10)

43

(1.69)

(1.10)

Two, M2.6 x 6

Four, M 5 holes on both
sides (depth: 5.5)

28

M12 connector

21 (0.83)

Four,M5 holes (depth: 5.5)

(1.58)

15.2

(0.60)

40.2

Mounting Dimensions
(Amplifier Unit)

Side Mounting

28

(1.10)

Bottom Mounting

53.2

(2.09)

28

(1.10)

Two, 5.5-dia holes

Four, 5.5-dia holes

21 (0.83)

1.5

(0.06)

25.5
(1.0)
27

(1.06)

42

(1.65)

12

(0.47)

8.8

(0.35)

dia.

10.5

(0.41)

dia.

Standard length: 2m
(Optional length: 5m)

20

L

(0.79)

E3MC

E39-L114 DIN Rail Side-Mounting Brackets

5.2

(0.20)

22

(0.87)

10

2-R5

11

(0.43)

6.8

(0.27)

(1.10)

6.8

(0.27)

28

(0.39)

4-R2.6

E3MC

Mounting Holes

E39-L115 DIN Rail Mounting Bracket

DIN-rail

E3MC

E3M

C

M

C

E3M

C-M



M

C-M



Installation

PLUG



Sensor I/O Connector
E39-C1 2M
E39-C1 5M

Internal Wiring

Lead wire color

White
Brown
Green
Yellow

Pink
Blue

Connection

Pin no.

1 White Output Output 1
2 Brown Power supply (+V)
3 Green Bank selection input 2 Output 4
4 Yellow Bank selection input 1 Output 3
5 Gray -- -- -- Output 2
6 Pink External synchronous input
7 Blue Power supply (0V)

Wire color Purpose

-11 orE3

-41

11 orE3

E3MC

41

FIBER UNIT



Tightening Torque

The Fiber Unit must be tightened to a maximum torque of 0.54 Nm (5.4 kgfcm or 4.85 inlbs).

Mounting

When Fiber Units are mounted facing each other, you must adjust the optical axes of the Fiber Units to avoid any mutual interference.

Handling the Fiber Unit

Do not pull or press the Fiber Unit.

•

Do not bend the Fiber Unit beyond the permissible bend-

•

ing radius provided in Ratings/Characteristics.
Do not bend the edge of the Fiber Unit.

•

Correct

Sensor head

Incorrect

Sensor head

20 mm min.

Amplifier Unit

20 mm min.

Amplifier Unit

Do not apply excess force to the Fiber Unit.

•

Correct

Incorrect

The Fiber Head could be broken by excessive vibration.

•

Fiber Unit

Nylon wire holder

To prevent this, use a one-turn loop to absorb vibration,
as shown here:

A one-turn loopcan
absorb vibration.

Tape

E3MC

E3MC

AMPLIFIER UNIT



Tightening Torque

The Amplifier Unit must be tightened to a maximum torque of

2.3 Nm(23kgfcm).

Mounting

When Sensors are mounted facing each other, you must adjust
the optical axes so that the Sensors will not cause mutual
interference.

GENERAL-PURPOSE FIBER-OPTIC



TYPE

Insertion

The inserted Fiber Unit comes in contact with the internal rubber
packing first. Insert the Fiber Unit further until it comes in contact
with the innermost end.

Mounting

Tighten the Fiber Unit with a screwdriver to a torque of 0.2 Nm
(2 kgfcm).

Fibers

Among the recommended fibers, the E32-CC200 and E32-D32L
have white or dotted yellow lines on the fiber to be inserted into
the emitter. When using the E3MC-(M)Y, insert the fiber with
the line into the emitter section at the bottom of the amp.

FIBER UNIT



Tightening Torque

When mounting the Fiber Unit, refer to the following table and
make sure that the tightening torque applied is correct.

Screw-mounting Type

Lock nuts (provided
with the E3MC)

Column Type

Flat or panhead set screw (M3 max.)

Fiber Unit Tightening torque

M3 screw
M4 screw

M6 screw
2-dia column
3-dia column
E32-T16

Make sure that the size of the wrench applied to the nut is correct.

Fiber Cutting

Insert the fiber into one of the insertion holes of the Cutting Toolto
cut the fiber to the desired length.

Press down the blade of the Cutting Tooltocutthe fiber in a single
stroke. Do not stop the Cutting Tool midway.

0.78 Nm{8kgfcm} max.

0.98 Nm{10kgfcm} max.

0.29 Nm{3kgfcm} max.

0.29 Nm{3kgfcm} max.

0.49 Nm{5kgfcm} max.

Mounting bracket

Toothed washer

View hole

Each insertion hole can be used only once. Do not use it again, or
the fibermaynotbecut properly andthesensingdistancemayde­crease.

E3MC

DIN-RAIL MOUNTING/REMOVAL WITH THE E39-L115



Mounting

1. Attach the E39-L115Mounting Bracket to the E3MC with four
M5 screws.

E3MC

E39-L115Mounting Bracket

E3MC

4. Press the E3MC in the direction indicated by arrow (3) and
slide part A in the direction indicated by arrow (4) as shown
in the following illustration until the E39-L115correctly en­gages with the DIN rail.

(3)

M3 screw

M5 screws

2. When mounting the E3MC with the E39-L115, loosen the M3
screw of the E39-L115 and slide part A in the direction indi­cated by arrow (1) as shown in the following illustration.

M3 screw

(1)

3. Mount part (2) to the DIN rail.

(2)

DIN rail

(4)

DIN rail

5. Tighten the M3 screw of the E39-L115 to secure the
E39-L115.

Removal

Loosen the M3 screw of the E39-L115, press the E3MC in the
direction indicated by arrow (5) and slide part A in the direction
indicated by arrow (6). Then lift the E3MC up in the direction
indicated by arrow (7) to remove the E3MC with the E39-L115.

(5)

M3 screw

(7)

(6)

E3MC

Terms

E3MC

Color Registration

•

Detection of a special mark on packaging material referred to
as the Registration Mark. This mark is aligned with the
printed pattern on the wrapping material and allows proper
cut-off of the packaging material so that printed images
appear in the correct location on the package.

Conformity/Non-conformity

•

In the E3MC Color Sensor, term used to indicate when the
target color matches a reference color stored in the memory
bank(s). A match is “conformity,” and a mismatch is
“non-conformity.”

D.O.

•

See Dark Operate.
Dark Operate

•

Operating mode where the output is turned on (transistor
becomes conducting, or relay coil is energized) when light is
NOT received. In the E3MC Color Sensor, this refers to the
mode where the output turns on when the target color does
NOT match (non-conformity) the reference color stored in the
memory bank.

Diffuse Reflective

•

Sensor configuration with the emitter and receiver located in
the same housing. Sensing of target is based on reflection of
light from the target itself (rather than a retroreflector).

Excess Gain

•

See Stability Indicator.
External Synchronous Input

•

In the E3MC Color Sensor, an input that allows “latching” of
the output when the input is taken high, preventing a change
of state until the input is taken low.

IEC

•

International Electrotechnical Commission.
Interference Protection

•

See Mutual Interference Protection.
IP

•

International Protection; an international standard scale for
enclosure ratings (sealing).

IP66

•

Approximately NEMA 4, 4X, “heavy seas” test; the item is
subjected to a stream of water from a
pressure at a distance of 1.5 meter. Water must not enter the
item.

IP67

•

Approximately NEMA 6, “immersion” test; the item is
immersed under 1 meter of water for 30 minutes, with no
water entry.

kgf

•

Kilogram Force.
kgfcm

•

Kilogram-force centimeters, measure of torque;
1kgfcm = 10.4 inlb.

1

/2” nozzle with 14psi

Lensed effect

•

Optical phenomenon where light passing through a
transparent object (bottle, for instance) is focused in the
same manner as a lens. If the lens effect is “converging,” the
light intensity may be increased significantly. When sensing
the presence of an object due to the attenuation of light
passing through that object, the lens effect may cause a
failure to detect the object. The light intensity may not be
reduced due to the “lens” effect of concentrating the light
beam.

L.O.

•

See Light Operate.
Light Operate

•

Operating mode where the output is turned on (transistor
conducts, or relay coil is energized) when light is received. In
the E3MC Color Sensor, refers to the mode where the output
turns on when the target color matches (conforms) to the
reference color stored in the memory bank.

Mutual Inference Protection

•

Circuitry that allows the sensor to detect and compensate for
interfering signals that may be emanating from sources within
its sensing range. Sensor can then operate normally, ignoring
the interfering signal(s).

nm

•

Nanometer; a measure of length, 10
inches.

NEMA

•

National Electrical Manufacturer’s Association; industrial
trade organization that publishes testing standards, including
enclosure ratings.

NPN

•

Transistor output designed to provide a path to ground for
current passing through the load (”sinking”). When the NPN
output is on, current can then pass from Positive, through the
load, and through the NPN transistor to ground, completing
the circuit.

PNP

•

Transistor output that provides a path to “Plus” for current
passing through the load (”sourcing”). When the PNP output
is on, current can then pass from Positive, through the PNP
transistor, through the load, and to ground, completing the
circuit.

Reflective Mode

•

See Diffuse Reflective.
Response time

•

Elapsed time from when a target moves into the sensing
zone of a sensor to when the output turns on. May also refer
to the “turn-off” time. The sum of turn-on and turn-off time is
the total cycle time (reciprocal of switching frequency, Hz).

Reverse Polarity Protection

•

Circuitry that prevents damage to the device if power is
incorrectly connected (polarity reversed, DC). The unit may
not work while polarity is reversed, but is undamaged, and
will work once polarity is corrected.

-- 9

meters, 3.937 x 10

-- 8

E3MC

E3MC

• RGB
Red, green, blue, refers to the triple light source in the E3MC

Color Sensor. By sensing the reflection level of each color,
the sensor can determine the exact color of the target.

• Short Circuit Protection
Circuitry that prevents damage to a device’s output if the

output is short-circuited. Usually current is monitored, and the
output is turned off if current exceeds a predetermined value.

• Stability Indicator
Indicator light that shows when a signal being received (such

as a light beam) is strong enough for stable operation.
Usually this stable operation is expressed as a percentage
above the switching threshold of the device.

Reference Information

WAVELENGTH



Color Wavelength
Ultraviolet below 400 nm
Violet 400--450 nm
Blue 450--500 nm
Green 500--570 nm
Yellow 570--590 nm
Orange 590--610 nm
Red 610--700 nm
Infrared above 700 nm

• Teach Function
Circuitry in a sensor that allows sensor threshold to be set

with the use of a “teach” input. Switching threshold is set
when the teach input is actuated, and it is based on signal
received at the moment of teaching.

• Through-beam
Sensor where the emitter and receiver are in separate

housings, and arranged facing each other. The target would
be detected passing between the emitter and receiver,
interrupting the beam.

CONVERSIONS



Length
1inch=25.4mm 1 mm = 0.3937 inch
Torque
kgfcm = 10.4 inlb 1inlb = 0.096 kgfcm
1Nm = 8.974 inlbs
Mass
1 gram = 2.205 x 10
Force
1 pound (force) = 4.4482219 Newtons
1 Newton = 0.2248 lbforce

-- 3

lbs 1 lb = 453.6 grams

E3MC

Precautions

E3MC

AVOID DAMAGE TO THE E3MC



Voltage must not exceed the rated voltage of the E3MC.

•

When supplying power to the E3MC, make sure that the

•

polarity of the power is correct.
Do not short-circuit the load connected to the E3MC.

•

INSTALLATION



Power Up Ready

The E3MC is ready to sense objects 100 ms after the unit is

•

turned ON.
The 100 ms wait is also required when the E3MC output is

•

controlling other devices.
If power is supplied to the E3MC and the load independently,

•

be sure to turn ON the E3MC
When the E3MC is turned ON or OFF,the operation indicator

•

will be illuminated for an instant, but no control output will be
turned ON.

first

.

Power Off

The E3MC may output a single pulse when the control power

•

supply is turned OFF .If the E3MC is connected to a timer or
counter, you should supply power to the timer or counter from
the same power supply as the E3MC.

Power Supplies

Power supply must be filtered with 10% MAX ripple (see

•

supply voltage specification).
When a switching regulator is required, you must connect the

•

FG (frame ground) and G (ground) terminals together, eliminat­ing the switching noise of the regulator to avoid a malfunction.

WIRING



Cable

The cable can be extended up to 100 m, allowing for a cable

•

thickness of 0.3 mm
The cable must not be repeatedly bent.

•

Do not pull cables with pulling forces exceeding 50 N

•

(11.24 lbforce).

2

maximum.

M12 Metal Connector

When connecting or disconnecting the cable, first remove the

•

power to the E3MC.
To avoid damage, tighten the metal connector securely by

•

hand. Do
To ensure that the enclosure rating is maintained (so that

•

water/vibration ratings are assured), the cable connector
must be

use any tools.

not

securely

hand-tightened.

Avoid Damage or Malfunction Due to Induction Noise

Never run the E3MC Color Sensor cables in the same con-

•

duit with power lines or high tension cables.

FURTHER INFORMATION



Correcting an EEPROM Error

An EEPROM error may result if the power supplied to the

•

Sensor fails, or if the Sensor is influenced by static noise.
When an EEPROM error occurs, the operation and bank
indicators will flash and the buzzer will beep. The remedy is
to reprogram and make threshold level settings again.

E3MC

8

E3MC

NOTE: DIMENSIONS SHOWN ARE IN MILLIMETERS. To convert millimeters to inches divide by 25.4.



OMRON ELECTRONICS, INC.

OneEastCommerceDrive
Schaumburg, IL 60173

1-800-55-OMRON

Cat. No. E256-E3-3 1/99 Specifications subject to change without notice. Printed in U.S.A.

OMRON CANADA, INC.

885 Milner Avenue
Scarborough, Ontario M1B 5V

416-286-6465