Assun AM-EN2211S113 Series User manual

Assun Motor
Product Manual
For Absolute Encoder
of
AM-EN2211S113 Series
1st edition. October, 2019.
All Rights Reserved
Assun Motor Inc.
Assun Motor Pte Ltd
Shenzhen Zhengyuan Motor Co., Ltd

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Contents
Assun Motor...........................................................................................................................................................1
Product Manual......................................................................................................................................................1
1. About the Manual...........................................................................................................................................3
1.1 Validity of This Document .........................................................................................................3
1.2 Using This Document..................................................................................................................3
1.3 Definition of Terms ......................................................................................................................4
1.4 Definition of Symbols..................................................................................................................4
2. Product Safety..................................................................................................................................................6
2.1 Intended Product Usage...................................................................................................................6
2.2 Product Usage Safety ........................................................................................................................6
2.3 Product Disposal/Recycling .............................................................................................................8
3. Product Series Information..........................................................................................................................9
3.1 Product Series Structure Introduction..........................................................................................9
3.2 Product Model Information.......................................................................................................... 10
3.3 General Technical Information .................................................................................................... 11
4. Product Function and Usage ................................................................................................................... 11
4.1 Installation and Power Connection ............................................................................................ 11
4.2 Resolution Description ................................................................................................................... 12
4.3 Three Phase Output Signal Description ................................................................................... 12
5. Maintenance.................................................................................................................................................. 13
Appendix ............................................................................................................................................................. 13
Appendix 1. Series Product Parameters .......................................................................................... 13
Appendix 2. Specified Product Drawing and Parameters ......................................................... 13
Contact................................................................................................................................................................. 14

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1. About the Manual
1.1 Validity of This Document
The product manual document here is used for AM-EN2211S113 series absolute encoder,
produced by Assun Motor. The manual has made detailed description to the safety and
functional usage of this product series. It helps professional user to install and connect the
encoder, and also guide the user in relevant function usage.
All data in this manual are based on the actual manufacturing and standard testing condition
of AM-EN2211S113 series product. Standard testing condition is environment temperature
at 25℃ and relative humidity at 30%-60%.
For relevant parameter summaries of the product series, please refer to Appendix 1 “Product
Series Parameters”; For specified standard model or customized model, please refer to
Appendix 2 “Detailed Product Drawing and Parameter”.
1.2 Using This Document
Please read this document carefully before install and set-up the product. Please pay extra
attention to the second chapter “Product Safety”, and strictly follow the warnings and
instructions.
Please retain this document throughout the entire working life of the product, and keep the
document accessible to the operating and, if necessary, maintenance personnel at all times.
Pass a copy of this document on to any subsequent owner or user of the product.

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1.3 Definition of Terms
Term
Meaning
PRR
Pulse Per Revolution
CW/CCW
Clockwise/Counter Clockwise
Channel
Signal Output Channels
VIL/VIH
Voltage Input Low / Voltage Input High
Pin
Control Function Connect Pin
Cable
Power Connection Cable
GND
Ground / Negative Pole
Vcc
Direct Current Voltage
RPM
Revolution per Minute
SSI
SSI Protocol
NSL
Enable Signal
SCL
Clock Rate Signal
DO
Data Output Signal
1.4 Definition of Symbols
Caution! Hazard to persons. Disregard may lead to injury.
Warning! Improper operation will cause product damage.

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Caution! Hazardous due to hot surface. Disregard may lead to burns.

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2. Product Safety
2.1 Intended Product Usage
The Assun Motor AM-EN2211S113 series three channel absolute encoder are suitable for
position signal output under rated DC power supply, it suitable for various DC drive and
precision motion control systems. Product has three channel digital signal output; output
signals are differentiated.
The product must be properly installed when in use, and shall be operated in an environment
with good heat dissipation conditions. In normal installation condition, encoders connect to
the end of motor or brake to become the last part of drive system. When motor or brake that
connects to the encoder are in normal temperature, the encoder could work properly.
The product is not suitable for operation in environments with high humid or excessive dust.
During the operation, please follow the parameter limits in the appendices to adjust the power
supply and running state, so as to achieve the optimum signal output and longest product
lifetime.
For usage of product in special environment, please contact our local sales or service staff for
consultancy and get the relevant advice or customized service.
This product is NOT SUITABLE for applications where the failure of the product could result
in the death of an individual or group of individuals.
2.2 Product Usage Safety
The product is a content of high-speed rotating parts. Please make sure the product is
properly mounted before commencement of operation to prevent potential hazards to
people or equipment. Please refer to Chapter 4.1 of this manual for further installation
guidance.

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Product surface could be hot after long term touch of operating motor or brake. Please
exercise caution when touching or handling the product.
Power supply must be filtered DC and the input voltage must be at rated value for normal
operation. Cable and pin connections must be strictly according to manufacturer’s guidance
for products’ normal operation. Wrong connections could damage the product. For detailed
connection guidance, please refer to chapter 4.1.
Please install the encoder in an environment with good heat sinking and/or ventilation.
Inadequate heat dissipation will lead to the product overheat and will cause thermal damage
to the internal electronic parts, resulting in malfunction and/or failure.
Please use the encoder according to the rated parameter in the appendix, otherwise it may
cause the internal electronics damage, which could lead to irreversible damage to the motor.
The motor is not suitable for operating in high humid and dusty environments. High humidity
or excessive dust concentration could lower the encoder accuracy and shorten the encoder
lifetime.

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The product is a high precision encoder with high accuracy assembly requirements. Please do
not personally disassemble the product.
2.3 Product Disposal/Recycling
This series of motor products is manufactured with multiple types of metals, alloy materials,
chemical adhesives and lubricants. Please dispose it properly as recyclable material. For a
detailed product material listing please refer to Chapter 3.1.

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3. Product Series Information
3.1 Product Series Structure Introduction
AM-EN2211S113 series products is a series of high-resolution electromagnetic encoder. Case
diameter is φ22mm, case thickness is 10.7mm, rated voltage is 5V. For detailed series
information and parameters please refer to Appendix 1.
The series product is single turn three channel absolute encoder, using electro-magneto
principle, when the motor rotates, the magneto parts rotates together with the shaft, causing
the magneto strength to change inside the encoder, and the magneto strength change will
be transformed into the current signal change, then transformed into digital signal output.
Due to the special arrangement of magneto field, every position output is unique and special,
thus become absolute signal.
. The product's basic structure is depicted in illustration 1.
Illustration 1. Exploded Product View

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This series of product are manufactured using materials using multi-types of metal, alloy
material and chemical products. Specific material usage as shown in Table 1.
Table 1. Product Material Matrix
Part
Case
Connector
Magneto
resistive
sensor
Disc
Welding
Material
Cable Core
Material
Plastic
Plastic
Magneto
resistive
material
Magneto
material
Tin
Copper
Part
PCB Board
PCB Circuit
Adhesive
Grease
Screw
Cable Insulation
Material
Glass Fiber
Copper
Epoxy
Resin
Fluorine
Grease
Stainless
Steel
Teflon
3.2 Product Model Information
To make it convenient for the customer to choose a specific part number or model and
understand the part number methodology, please refer below in Illustration 2 the explanation
for model number composition principle.
Illustration 2. Part Number Nomenclature
Customers can choose suitable products based on their types and characteristics shown in
the part number methodology. If products with special characteristics are required, please
contact our regional sales person for customized service.

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3.3 General Technical Information
Table 2. Product Series General Technical Information
Power
Signal Output
Ambient
Temperature
Max.
Inertia
Max Clock Rate
5V±5%
Vcc=5.0V,
SSI Protocol
-25℃~125℃
0.015g·cm2
10 MHz
4. Product Function and Usage
The series of product has 10 output cables, in which 8 of them are effective, including the
differential signals of enable, clock frequency and data output, and also the power supply
positive and negative.
4.1 Installation and Power Connection
Encoder must be properly and securely mounted, typically utilizing the treaded holes in the
motor end cover to connect with the motor, in special cases could also use adhesive for
connection. It will be recommended that encoder installed by manufacturer. If customer need
to install by themselves, then please be cautious and better contact manufacturer for
guidance. Meanwhile the encoder shall be installed in the good ventilated environments for
good thermal dissipation.
Connection of encoder to controller shall be strictly according to pin function arrangements.
Wrong connection will lead to malfunction of encoder or even damage the encoder
electronics. When fitting with Assun Motor controllers, the products will be well fitted before
shipping. If customer wants to adopt other controller brands, then please contact Assun sales
engineers for relevant guidance or customizations.

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4.2 Resolution Description
Resolution of the encoder series, also named as bits for absolute encoder, is 16 bits. The
encoder are capable of giving 2^16 position signals, thus the precision gap level in the 360°
rotation is 0.0055°.
The series of product is single-turn absolute encoder, un-capable of turn number recording.
If the number of turns need to be recoded, the relevant functions shall be configured in the
controller.
All output signals of this product are differentiated, and such differentiated signal could bring
better stability to the system.
4.3 Three Phase Output Signal Description
The three channel output signals are SSI protocol signals.
In the output signals, the NSL is enable signal, and only when the NSL signal is in low
voltage level, then the absolute encoder can output position data. The other two channels
are clock frequency signal and relevant data output signal. There are 20 bits in data signal,
among which 16 of them are position data, 3 of them are status data, while the other 1 is
parity data.

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5. Maintenance
The product series is maintenance free, please do not disassemble in person. There are no
repairable components inside the motor. Regarding any quality issue or maintenance needs,
please contact our regional service person for relevant technical support.
Ignoring this warning will void the warranty.
Appendix
Appendix 1. Series Product Parameters
Appendix 2. Specified Product Drawing and Parameters

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Contact
Singapore
Tel: [phone]
Email: [e-mail]
Add: #06-05, 1092 Lower Delta Road. Singapore 169203.
China
Tel: [phone]
Email: [e-mail]
Add: 7th Floor, Blk 6, Yongping Industrial Area, 9 Tongfu Road. Shenzhen, P.R.China.
USA
Tel: [phone]
Email: [e-mail]
Add: Suit F208, 6370 Lusk Boulevard San Diego, CA 92121-2760 USA