Incremental 25-mm-dia. Rotary Encoder
E6A2-C
CSM_E6A2-C_DS_E_7_1
Compact Encoder with External
Diameter of 25 mm
• Incremental model
• External diameter of 25 mm.
• Resolution of up to 500 ppr.
Be sure to read
Safety Precautions
on
page 3.
For the most recent information on models that have been certified for
safety standards, refer to your OMRON website.
Ordering Information
Encoders
[Refer to
Dimensions
on page 4.]
Power supply voltage Output configuration
Voltage output
5 to 12 VDC
Open-collector output
(NPN output)
Resolution (pulses/rotation)
100, 200, 360
500
100, 200, 360
Phases A, B, and Z
500
100, 200, 360
500
100, 200, 360
500
100, 200, 360
Phases A and B
500
100, 200, 360
500
10, (20)
*,
60, 100, 200, 300,
360
500
10, 20, 60, 100, 200, 300, 360
Phase A
500
10, 20, 60, 100, 200, 300, 360
500
Output phases
Model
E6A2-CWZ3E (resolution) 0.5M
Example: E6A2-CWZ3E 100P/R 0.5M
E6A2-CWZ3C (resolution) 0.5M
Example: E6A2-CWZ3C 100P/R 0.5M
E6A2-CWZ5C (resolution) 0.5M
Example: E6A2-CWZ5C 100P/R 0.5M
E6A2-CW3E (resolution) 0.5M
Example: E6A2-CW3E 100P/R 0.5M
E6A2-CW3C (resolution) 0.5M
Example: E6A2-CW3C 100P/R 0.5M
E6A2-CW5C (resolution) 0.5M
Example: E6A2-CW5C 100P/R 0.5M
E6A2-CS3E (resolution) 0.5M
Example: E6A2-CS3E 10P/R 0.5M
E6A2-CS3C (resolution) 0.5M
Example: E6A2-CS3C 10P/R 0.5M
E6A2-CS5C (resolution) 0.5M
Example: E6A2-CS5C 10P/R 0.5M
12 to 24 VDC
Voltage output
5 to 12 VDC
Open-collector output
(NPN output)
12 to 24 VDC
Voltage output
5 to 12 VDC
Open-collector output
(NPN output)
12 to 24 VDC
* Only a 2-m cable is available for the 20P/R Model.
Accessories (Order Separately)
[Refer to
Dimensions
on
Rotary Encoder Accessories.]
Name
Model
Coupling
E69-C04B
Servo Mounting Bracket
E69-1
Refer to
Accessories
for details.
Remarks
Provided with the product.
Provided with the E6A2-CWZ@.
1
E6A2-C
Ratings and Specifications
Item
Model E6A2-
CWZ3E
E6A2-
CWZ3C
E6A2-
CWZ5C
12 VDC
−10%
to
24 VDC
+15%, ripple
(p-p): 5%
max.
E6A2-CW3E
E6A2-CW3C
E6A2-CW5C
12 VDC
−10%
to
24 VDC
+15%, ripple
(p-p): 5%
max.
E6A2-CS3E
E6A2-CS3C
E6A2-CS5C
12 VDC
−10%
to
24 VDC
+15%, ripple
(p-p): 5%
max.
Power supply
voltage
5 VDC
−5%
to 12 V +10%
ripple (p-p): 5% max.
5 VDC
−5%
to 12 V +10%,
ripple (p-p): 5% max.
5 VDC
−5%
to 12 V +10%,
ripple (p-p): 5% max.
Current
consumption*1
Resolution (pulses/
rotation)
Output phases
Output configuration
50 mA max.
30 mA max.
30 mA max.
20 mA max.
30 mA max.
20 mA max.
100, 200, 360, 500
Phases A, B, and Z
Voltage out-
put
Output resis-
tance: 2 kΩ
Output cur-
rent: 20 mA
max.
Residual volt-
age: 0.4 V
max.
(Output cur-
rent: 20 mA
max.)
30 kHz
Phase difference between phases A and B: 90°±45°
---
1.0
μs
max.
(Cable
length:
500 mm,
Sink current:
10 mA)
1 mN·m max.
1
×
10
−7
kg·m
2
max.
10 N
50 N
5,000 r/min
Operating:
−10
to 55°C (with no icing), Storage:
−25
to 80°C (with no icing)
Operating/storage: 35% to 85% (with no condensation)
20 MΩ min. (at 500 VDC) between current-carrying parts and case
500 VAC, 50/60 Hz for 1 min between current-carrying parts and case
Destruction: 10 to 55 Hz, 1.5-mm double amplitude for 2 hours each in X, Y, and Z directions
Destruction: 500m/s
2
3 times each in X, Y, and Z directions
IEC 60529 IP50
Pre-wired Models (Standard cable length: 500 mm)
1.0
μs
max. (Cable length:
500 mm, Control output volt-
age: 5 V, Load resistance:
1 kΩ)
1.0
μs
max.
(Cable
length:
500 mm,
Sink current:
10 mA)
1.0
μs
max. (Cable length:
500 mm, Control output volt-
age: 5 V, Load resistance:
1 kΩ)
NPN open-collector output
Phases A and B
Voltage out-
put
Output resis-
tance: 2 kΩ
Output cur-
rent: 20 mA
max.
Residual volt-
age: 0.4 V
max.
(Output cur-
rent: 20 mA
max.)
NPN open-collector output
10, 20, 60, 100, 200, 300, 360, 500
Phase A
Voltage out-
put
Output resis-
tance: 2 kΩ
Output cur-
rent: 20 mA
max.
Residual volt-
age: 0.4 V
max.
(Output cur-
rent: 20 mA
max.)
NPN open-collector output
Output capacity
Applied voltage: 30 VDC
max.
Sink current: 30 mA max.
Residual voltage: 0.4 V max.
(at sink current of 30 mA)
Applied voltage: 30 VDC
max.
Sink current: 30 mA max.
Residual voltage: 0.4 V max.
(at sink current of 30 mA)
Applied voltage: 30 VDC
max.
Sink current: 30 mA max.
Residual voltage: 0.4 V max.
(at sink current of 30 mA)
Maximum response
frequency*2
Phase difference
between outputs
Output duty factor
---
50±25%
1.0
μs
max.
(Cable
length:
500 mm,
Sink current:
10 mA)
1.0
μs
max. (Cable length:
500 mm, Control output volt-
age: 5 V, Load resistance:
1 kΩ)
Rise and fall times of
output
Starting torque
Moment of inertia
Shaft
loading
Radial
Thrust
Maximum
permissible speed
Ambient temperature
range
Ambient humidity
range
Insulation resistance
Dielectric strength
Vibration resistance
Shock resistance
Degree of
protection*3
Connection method
Material
Weight
(packed state)
Accessories
Case: Aluminum alloy, Main unit: Aluminum, Shaft: SUS420J2, Mounting Bracket: Galvanized iron
Approx. 35 g
Coupling, Servo Mounting Bracket (provided with the E6A2-CWZ@), Hexagonal wrench, Instruction manual
*1. An inrush current of approximately 9 A will flow for approximately 0.3 ms when the power is turned ON.
*2. The maximum electrical response speed is determined by the resolution and maximum response frequency as follows:
Maximum electrical response speed (rpm) =
Maximum response frequency
×
60
Resolution
This means that the E6A2-C Rotary Encoder will not operate electrically if its speed exceeds the maximum electrical response speed.
*3. No protection is provided against water or oil.
2
E6A2-C
I/O Circuit Diagrams
Model/Output Circuits
Output mode
Connection
E6A2-CS3C
E6A2-CS5C
Output transistor
Brown
Vcc
E6A2-C@@3C: +5 to 12 V
E6A2-C@@5C: +12 to 24V
Black,
white,
orange
Output
(Black: phase A,
30 VDC
White:
phase B,
30 mA max.
Orange: phase Z)
Blue
0V
(
)
T(100%)
ON
OFF
E6A2
main
circuit
1/2T±1/4T (50%±25%)
The ONs in the above timing chart mean that the
output transistor is ON and the OFFs mean that the
output transistor is OFF.
E6A2-CW3C
E6A2-CW5C
E6A2-CWZ3C
E6A2-CWZ5C
Brown
Vcc
E6A2-C@@3C: +5 to 12 V
E6A2-C@@5C: +12 to 24V
Black,
white,
orange
Output
(Black: phase A,
30 VDC
White:
phase B,
30 mA max.
Orange: phase Z)
Blue
0V
Output transistor
Direction of rotation: CW
(as viewed from end of shaft)
T(360˚)
CW
Phase A
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Direction of rotation: CCW
(as viewed from end of shaft)
T(360˚)
CCW
(
)
Phase A
Phase B
Phase Z
E6A2
main
circuit
ON
Phase B
OFF
1/4±1/8T (90˚±45˚)
ON
Phase Z
OFF
1/4±1/8T (90˚±45˚)
Note: Phase A is 1/4 T
±
1/8 T
faster than phase B.
Note: Phase A is 1/4 T
±
1/8 T
slower than phase B.
The ONs in the above timing chart mean that the
output transistor is ON and the OFFs mean that the
output transistor is OFF.
Color
Brown
Black
White
Orange
Blue
Signal
Vcc
Phase A
Phase B
Phase Z
0
V
(common)
E6A2-CW3E
E6A2-CWZ3E
Output transistor
Direction of rotation: CW
(as viewed from end of shaft)
Brown
Vcc (+5 to 12 V)
T(360˚)
H
L
H
Phase B
L
H
Phase Z
L
Phase A
CW
Phase A
Direction of rotation: CCW
(as viewed from end of shaft)
T(360˚)
CCW
2 kΩ
E6A2
main
circuit
20 mA
max.
Black,
white,
orange
Output (Black: phase A,
White:
phase B,
Orange: phase Z)
Blue
0V
H
L
H
Phase B
L
1/4±1/8T(90˚±45˚)
H
Phase Z
L
Note: 1. The white and orange wires
of Single Models (E6A2-
CS@@) do not output
signals (no connection).
2. The white and orange wires
of Single Models (E6A2-
CS@@) do not output
signals (no connection).
3.
Voltage
Output Models are
capable of sinking a
maximum current of 20 mA.
1/4±1/8T(90˚±45˚)
Note: Phase A is 1/4 T
±
1/8 T
faster than phase B.
Note: Phase A is 1/4 T
±
1/8 T
slower than phase B.
“H” and “L” in the diagrams are the output voltage
levels of phases A, B, and Z.
E6A2-CS3E
Brown
2 kΩ
E6A2
main
circuit
20 mA
max.
Black,
white,
orange
Output (Black: phase A,
White:
phase B,
Orange: phase Z)
Blue
0V
Vcc (+5 to 12 V)
Output transistor
T(100%)
H
L
1/2T±1/4T (50%±25%)
“H” and “L” in the diagrams are the output voltage
levels.
Safety Precautions
Refer to
Warranty and Limitations of Liability.
WARNING
This product is not designed or rated for ensuring
safety of persons either directly or indirectly.
Do not use it for such purposes.
Precautions for Correct Use
Do not use the Encoder under ambient conditions that exceed the ratings.
●
Wiring
Spurious pulses may be generated when power is turned ON and
OFF. Wait at least 0.1 s after turning ON the power to the Encoder
before using the connected device, and stop using the connected
device at least 0.1 s before turning OFF the power to the Encoder.
Also, turn ON the power to the load only after turning ON the power
to the Encoder.
3
E6A2-C
(Unit: mm)
Dimensions
Encoder
E6A2-C
Tolerance class IT16 applies to dimensions in this datasheet unless otherwise specified.
Two, M3 holes,
Depth: 4
0
4
-0.012
dia.
8
1.5
1.5
22 dia.
0
12
-0.05
dia.
3.6
6
*
18±
0.2
25 dia.
10
2
29
(46.5)
5.5
* 4-dia. vinyl-insulated round cable with 5 conductors (Conductor cross
section: 0.14 mm
2
, Insulator diameter: 0.9 mm),
Standard length: 500 mm
Accessories (Order Separately)
Coupling
E69-C04B
Servo Mounting Bracket
E69-1
Refer to
Accessories
for details.
4
Terms and Conditions Agreement
Read and understand this catalog.
Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you
have any questions or comments.
Warranties.
(a) Exclusive Warranty.
Omron’s exclusive warranty is that the Products will be free from defects in materials and workmanship
for a period of twelve months from the date of sale by Omron (or such other period expressed in writing by Omron). Omron
disclaims all other warranties, express or implied.
(b) Limitations. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT
NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE PRODUCTS. BUYER
ACKNOWLEDGES THAT IT ALONE HAS DETERMINED THAT THE
PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE.
Omron further disclaims all warranties and responsibility of any type for claims or expenses based on infringement by the
Products or otherwise of any intellectual property right. (c) Buyer Remedy.
Omron’s sole obligation hereunder shall be, at
Omron’s election, to (i) replace (in the form originally shipped with Buyer responsible for labor charges for removal or
replacement thereof) the non-complying Product, (ii) repair the non-complying Product, or (iii) repay or credit Buyer an amount
equal to the purchase price of the non-complying Product; provided that in no event shall Omron be responsible for warranty,
repair, indemnity or any other claims or expenses regarding the Products unless Omron’s
analysis confirms that the Products
were properly handled, stored, installed and maintained and not subject to contamination, abuse, misuse or inappropriate
modification. Return of any Products by Buyer must be approved in writing by Omron before shipment. Omron Companies shall
not be liable for the suitability or unsuitability or the results from the use of Products in combination with any electrical or
electronic components, circuits, system assemblies or any other materials or substances or environments. Any advice,
recommendations or information given orally or in writing, are not to be construed as an amendment or addition to the above
warranty.
See
http://www.omron.com/global/
or contact your Omron representative for published information.
Limitation on Liability; Etc.
OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS,
WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE OR STRICT LIABILITY.
Further, in no event shall liability of Omron Companies exceed the individual price of the Product on which liability is asserted.
Suitability of Use.
Omron Companies shall not be responsible for conformity with any standards, codes or regulations which apply to the
combination of the Product in the Buyer’s application or use of the Product. At Buyer’s request, Omron will provide applicable
third party certification documents identifying ratings and limitations of use which apply to the Product. This information by itself
is not sufficient for a complete determination of the suitability of the Product in combination with the end product, machine,
system, or other application or use. Buyer shall be solely responsible for determining appropriateness of the particular Product
with respect to Buyer’s application, product or system. Buyer shall take application responsibility in all cases.
NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY OR IN LARGE
QUANTITIES WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS,
AND THAT THE OMRON PRODUCT(S) IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE
OVERALL EQUIPMENT OR SYSTEM.
Programmable Products.
Omron Companies shall not be responsible for the user’s programming of a programmable Product, or any consequence
thereof.
Performance Data.
Data presented in Omron Company websites, catalogs and other materials is provided as a guide for the user in determining
suitability and does not constitute a warranty. It may represent the result of Omron’s test conditions, and the user must correlate
it to actual application requirements. Actual performance is subject to the Omron’s
Warranty and Limitations of Liability.
Change in Specifications.
Product specifications and accessories may be changed at any time based on improvements and other reasons. It is our
practice to change part numbers when published ratings or features are changed, or when significant construction changes are
made. However, some specifications of the Product may be changed without any notice. When in doubt, special part numbers
may be assigned to fix or establish key specifications for your application.
Please consult with your Omron’s representative at
any time to confirm actual specifications of purchased Product.
Errors and Omissions.
Information presented by Omron Companies has been checked and is believed to be accurate; however, no responsibility is
assumed for clerical, typographical or proofreading errors or omissions.
2014.1
In the interest of product improvement, specifications are subject to change without notice.
OMRON Corporation
Industrial Automation Company
http://www.ia.omron.com/
(c)Copyright OMRON Corporation 2014 All Right Reserved.
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