Hollow-shaft Encoder with Diameter of 40 mm
• Incremental model.
• External diameter of 40 mm.
• Resolution of up to 3,600 ppr.
• Slim design at only 26 mm thick.
Be sure to read Safety Precautions on
Encoders [Refer to Dimensions on page 4.]
Power supply voltage Output configuration Resolution (pulses/rotation) Model
300, 360, 500, 600, 720, 800, 1,000, 1,024 E6H-CWZ6C (resolution) 0.5M
5 to 24 VDC Open-collector output 1,200, 1,500, 1,800, 2,000, 2,048 Example: E6H-CWZ6C 300P/R 0.5M
300, 360, 500, 600, 720, 800, 1,000, 1,024 E6H-CWZ3E (resolution) 0.5M
5 to 12 VDC Voltage output 1,200, 1,500, 1,800, 2,000, 2,048 Example: E6H-CWZ3E 300P/R 0.5M
300, 360, 500, 600, 720, 800, 1,000, 1,024 E6H-CWZ3X (resolution) 0.5M
5 to 12 VDC Line-driver output 1,200, 1,500, 1,800, 2,000, 2,048 Example: E6H-CWZ3X 300P/R 0.5M
Ratings and Specifications
Item Model E6H-CWZ6C E6H-CWZ3E E6H-CWZ3X
Power supply voltage 5 VDC −5% to 24 VDC +15%, ripple 5 VDC −5% to 12 VDC +10%, ripple (p-p): 5% max.
(p-p): 5% max.
Current 100 mA max. 150 mA max.
Resolution 300, 360, 500, 600, 720, 800, 1,000, 1,024, 1,200, 1,500, 1,800, 2,000, 2,048, 2,500, 3,600
Output phases Phases A, B, and Z Phases A, A, B, B, Z, and Z
Output configuration Open-collector output Voltage output Line-driver output*4
Applied voltage: 35 VDC max. Output resistance: 1 kΩ Output current: High level: IO =
Sink current: 35 mA max. Sink current: 30 mA max. −10 mA
Output capacity Residual voltage: 0.7 V max. (at sink Residual voltage: 0.7 V max. (at sink Low level: Is = 10 mA
current of 35 mA) current of 30 mA) Output voltage: VO = 2.5 V min.
VS = 0.5 V
Maximum response 100 kHz
Phase difference 90°±45° between A and B (1/4 T ± 1/8 T)
Rise and fall times of 1 μs max. (Control output voltage: 5 V, Load resistance: 1 kΩ, Output cable: 1 μs max. (I0 = −10 mA, IS = 10 mA,
output 500 mm) Output cable: 500 mm)
Starting torque 1.5 mN·m max.
Moment of inertia 2×10−6kg·m2 max.
Shaft Radial 29.4 N
loading Thrust 4.9 N
Maximum 10,000 r/min
Ambient temperature Operating: −10 to 70°C (at 90% humidity max.), Storage: −30 to 85°C (with no icing)
Ambient humidity Operating/Storage: 90% max. (with no condensation)
Insulation resistance Excluded because of capacitor ground.
Dielectric strength Excluded because of capacitor ground.
Vibration resistance Destruction: 10 to 500 Hz, 100 m/s2 or 1.5-mm double amplitude for 2 hours each in X, Y, and Z directions
Shock resistance 300 m/s2 for 11 ms 3 times each in X, Y, and Z directions (excluding shock to the shaft)
Degree of IEC 60529 IP50
Connection method Pre-wired Models (Standard cable length: 0.5 m)
Material Case: Iron, Main unit: Aluminum, Pressboard panel: SUS304
Weight (packed state) Approx. 120 g
Accessories Instruction manual
*1. An inrush current of approximately 6 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
This means that the Rotary Encoder will not operate electrically if its speed exceeds the maximum electrical response speed.
*3. No protection is provided against water or oil.
*4. The line driver output is a data transmission circuit compatible with RS-422A and long-distance transmission is possible with a twisted-pair cable. The quality is
equivalent to AM26LS31.
I/O Circuit Diagrams
Model Output Circuits Output mode Connection
Direction of rotation: CW
(as viewed from end of shaft)
Phase A OFF
5 to 24 VDC Phase B OFF
Black, white, ON 1/4T±1/8T (90˚±45˚)
orange Phase Z OFF
E6H-CWZ6C E6H NPN Output signal ON
main transistor (Black: phase A,
circuit 35 mA White: phase B,
max. Orange: phase Z) Direction of rotation: CCW
35 VDC (as viewed from end of shaft)
Shield Phase A OFF
Phase B OFF Color Terminal
ON 1/4T±1/8T (90˚±45˚)
Phase Z OFF Brown Power supply (+Vcc)
ON Black Output phase A
Voltage output White Output phase B
Direction of rotation: CW Orange Output phase Z
(as viewed from end of shaft) Blue 0 V (common)
Phase A H
5 to 12 VDC H
1 kΩ Black, white, Phase B L
orange H 1/4T±1/8T (90˚±45˚)
E6H Output signal Phase Z L
E6H-CWZ3E main NPN (Black: phase A,
circuit transistor White: phase B,
30 mA Orange: phase Z) Direction of rotation: CCW
max. Blue (as viewed from end of shaft)
Shield GND H
Phase B H
L 1/4T±1/8T (90˚±45˚)
Phase Z H
Direction of rotation: CW
(as viewed from end of shaft)
Phase A H
Phase B H
L 1/4T±1/8T (90˚±45˚) Color Terminal
Phase Z H
L Brown Power supply (+Vcc)
Brown 5 to 12 VDC H
Phase A L Black Output phase A
Black, white, H Black/red Output phase A
orange Non-reversed output Phase B
E6H AM26 L White Output phase B
main (Black: phase A, H
LS31 Black/red, White: phase B, Phase Z
E6H-CWZ3X circuit equivalent white/red, Orange: phase Z) L White/red Output phase B
orange/red Reversed output
(Black/red: phase A, Direction of rotation: CCW Orange Output phase Z
White/red: phase B, (as viewed from end of shaft) Orange/ Output phase Z
Blue Orange/red: phase Z) red
0V T(360˚) CCW
GND H Blue 0 V (common)
Shield Phase A L
H Note: 1. Receiver: AM26LS32 equivalent
Phase B L 2. "Black/red" indicates a red strip.
H 1/4T±1/8T (90˚±45˚)
Phase Z L
Phase A H
Phase B H
Phase Z H
Note: Normally connect GND to 0 V or to an external ground.
Refer to Warranty and Limitations of Liability.
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
• The diameter of the mating shaft must be 8 −0.012 mm and 8 to • When securing the Encoder, use two M3 screws to secure the leaf
−0.004 spring to the mounting surface.
11 mm long from the mounting surface. • Use the Allen set screw provided with the hollow shaft to secure the
• The allowable displacement in the mating shaft must 0.05 mm in shaft. Use a tightening torque of 0.4 N·m and apply screw lock glue
the radial direction and 0.3 mm in the thrust direction. to the screw to prevent it from becoming loose.
• The mounting surface and shaft must be perpendicular to within • If wiring after securing the Encoder, do not pull on the cable. Also,
0.03 mm. do not apply shock to the Encoder or hollow shaft.
• When securing the Encoder, do not allow force to be applied to the • If the Encoder phase Z must be aligned with the origin of the
leaf spring. installation device, mount the Encoder while checking the phase Z
0.03 A output.
Eccentricity will develop in the Spurious pulses may be generated when power is turned ON and
Encoder if the above values are not OFF. Wait at least 0.1 s after turning ON the power to the Encoder
satisfied, and the mounting leaf spring before using the connected device, and stop using the connected
may be destroyed. device at least 0.1 s before turning OFF the power to the Encoder.
A Also, turn ON the power to the load only after turning ON the power
to the Encoder.
Rotary Encoder Recommended Power Supplies: Consult your OMRON representative for details.
Dimensions Tolerance class IT16 applies to dimensions in this datasheet unless otherwise specified.
E6H-C Allen set screws
Two, M3 × 4 Hollow shaft
screws (Hollow shaft interior 7
dia.: 8 mm)
8 +0.015 dia. 40 dia. 54 46
Two, Two, 3.2 +0.1 dia. 10
6.4 dia. 4.2 dia. 20˚
E6H-CWZ6C, E6H-CWZ3E 8 dia.
4.2-dia. shielded cable with 5 conductors 6
(Conductor cross section: 0.1 mm2, 26
Insulator diameter: 0.88 mm), Standard
length: 500 mm
5.5-dia. shielded cable with 8 conductors
(Conductor cross section: 0.1 mm2,
Insulator diameter: 1.0 mm), Standard
length: 500 mm
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
Warranty and Limitations of Liability
OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year (or other period if specified)
from date of sale by OMRON.
OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-INFRINGEMENT, MERCHANTABILITY, OR
FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS. ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS
DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE. OMRON DISCLAIMS ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED.
LIMITATIONS OF LIABILITY
OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR COMMERCIAL LOSS
IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT
In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which liability is asserted.
IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS 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 OR REPAIR.
SUITABILITY FOR USE
OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the combination of products in the customer's
application or use of the products.
At the customer's request, OMRON will provide applicable third party certification documents identifying ratings and limitations of use that apply to the
products. This information by itself is not sufficient for a complete determination of the suitability of the products in combination with the end product,
machine, system, or other application or use.
The following are some examples of applications for which particular attention must be given. This is not intended to be an exhaustive list of all possible
uses of the products, nor is it intended to imply that the uses listed may be suitable for the products:
• Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions or uses not described in this catalog.
• Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical equipment, amusement machines, vehicles,
safety equipment, and installations subject to separate industry or government regulations.
• Systems, machines, and equipment that could present a risk to life or property.
Please know and observe all prohibitions of use applicable to the products.
NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY WITHOUT ENSURING THAT THE
SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON PRODUCTS ARE PROPERLY RATED AND
INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.
OMRON shall not be responsible for the user's programming of a programmable product, or any consequence thereof.
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 model numbers when published ratings or features are changed, or when significant construction changes are made.
However, some specifications of the products may be changed without any notice. When in doubt, special model numbers may be assigned to fix or
establish key specifications for your application on your request. Please consult with your OMRON representative at any time to confirm actual
specifications of purchased products.
DIMENSIONS AND WEIGHTS
Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are shown.
Performance data given in this catalog 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 users must correlate it to actual application requirements. Actual performance is subject to the OMRON
Warranty and Limitations of Liability.
ERRORS AND OMISSIONS
The information in this document has been carefully checked and is believed to be accurate; however, no responsibility is assumed for clerical,
typographical, or proofreading errors, or omissions.
In the interest of product improvement, specifications are subject to change without notice.
Industrial Automation Company
(c)Copyright OMRON Corporation 2010 All Right Reserved.
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