1. Description
MEA Absolute Magnetic Encoder provides an integrated solution for angular detection.
With ease of use in mind, these magnetic encoders are ideal for angular detection within a complete 360° rotation. Based on magnetic technology, the encoder is non-contact and ensures reliable operations, motion control and sensing activities eliminates mechanical contact
2. Feature
10 or 12 bits resolution (1024 to 4096)
Contactless sensing technology
Absolute angular position detection
SSI output for absolute position data (binary format)
Wide temperature range from -40 to 125°C
Easy assembly and no signal adjustment required
RoHS compliant
Single-Ended or Differential Outputs for ABI Channels
U/V/W Commutation Outputs (Differential or Open-Collector)
Compatible withΦ6mm/Φ8mm/Φ10mm Size Diameters
Allows for ± .005" Axial Shaft Play
3. Applications of Encoder
(1. Drives
(2. Rolling mills
(3. Wind energy
(4. Port machinery
(5. Textile industries
(6. Construction
(7. Robotics
(8. Farm machinery
(9. Solar energy
(10. Industrial doors
4. Protocol SSI Description
SSI is synchronous series signal. One pair is clock trigger and the other is data transmission for the actual two pairs RS422
The absolute position of the encoder is triggered by the clock signal of the receiving device from the high bit of binary code (MSB) and output the serial signal is Synchronous with the clock signal. The clock signal starts from the receiving device and outputs certain amounts of interruptive pulses according to the total bits of the encoders. When non-operational, clock and data line levels are high and the current data will be memorized from the first falling edge of the clock signal. Data transmission starts from the rising edge of the clock signal. Clock signals are synchronous to the data. t3 means the recovered signal waiting for the next transmission (The default is data increasing when facing to shaft clockwise).

Description
A non-contact high performance off-axis absolute rotary encoder designed for integration into space-constrained applications. Hollow ring, true absolute functionality, high speed operation and high degree of IP protection make this encoder suitable for many applications.
The magnetic encoder system consists of an axially magnetized ring and a read-head.
The encoders come in CAN, SSI,SPI, I2C, PWM, asynchronous serial RS422/RS485 and analogue current or voltage output variants and offer a range of binary resolutions to 12 bits per revolution or decimal resolutions to 4096 counts per revolution.
The encoder operates from -40°C to +85°C and is resistant to shock and vibrations.
The magnetic encoder system is suitable for usage in industrial and medical applications.
Typical application is a robotic arm joint with a cable feed through the ring or a precision gearbox where the ring is attached onto the main transmission shaft. Custom design service for OEM integration is also available.
Mechanical data
Available ring sizes (outer diameter) : 49 mm
Material type : Ring EN 1.4005 / AISI416 or EN 1.4104 / AISI430F with vulcanised HNBR rubber
Cable : Ø4.2 ± 0.2 mm, PUR high flexible cable, drag-chain compatible, double-shielded
8 × 0.05 mm2; durability : 20 million cycles at 20 mm bend radius
Environmental data :
Temperature : Operating -40 °C to +85 °C
Storage -40 °C to +110 °C
Vibration – read head only (55 Hz to 2000 Hz) : 300 m/s2 (IEC 60068-2-6)
Shock – read head only (11 ms) : 300 m/s2 (IEC 60068-2-27)
Protection : IP65
communication interfaces
CAN bus
Standard: J1939
Update rate: 20 Hz
Resolution: 12 bits
Latency: 250 μs
Asynchronous serial RS422 RS485
Baud rate: 4,800 bps,
Data format: 8 bits, no party, 1 stop bit
Update rate: On demand or continuous
Resolution : 12 bits
Latency : 250 μs
PWM
Base frequency: 180 Hz
Step duration: 0.1110 μs
Update rate: 180 Hz
Output resolution: 12 bits per revolution
Latency: 250 μs
SSI (optional CRC)
Maximum clock frequency: 20 MHz
Update rate: 4 kHz
Resolution: 12 bits
Latency: 250 μs to 500 μs
Timeout (monoflop time): 20 μs
SPI slave (chain possible, master mode optional) (available on request)
Maximum clock frequency: 20 MHz
Update rate: 4 kHz
Resolution: 12 bits
Latency: 250 μs to 500 μs
I2C / TWI slave (available on request)
Maximum clock frequency: 400 kHz
Update rate: 4 kHz
Resolution: 12 bits
Latency: 250 μs to 500 μs
Analogue current (available on request)
Current range: For AZ output 0 mA - 20 mA
For AF output 4 mA - 20 mA
Update rate: 4 kHz
Output resolution: 12-bit DAC
Latency: 300 μs
Analogue voltage (available on request)
Voltage range: For VV output 0 V - 10 V (min. 12 V supply)
For VP output 10 % - 90 % of supply voltage
Update rate: 4 kHz
Output resolution: 12-bit DAC
Latency: 300 μs

Main Features
Compact and heavy-duty industrial design
Interface: CANopen/CAN
Housing: 58mm ￠
Solid/ hollow shaft: 6 or 10 mm￠/15 mm￠
Through hollow shaft: 12mm￠
Max. 65536 steps per revolution (16 Bit)
Max. 16384 revolutions (14 Bit)
Velocity- and Acceleration-output
Mechanical structure
Aluminum flange and housing
Stainless steel shaft
Optional: Stainless steel flange /housing
Precision ball bearings with sealing or cover rings
Code disc made of unbreakable and durable plastic
Software Features
Direction of rotation (complement)
Resolution per revolution
Total resolution
Preset value
Two limit switches and eight cams
Baud rate and CAN-identifier
Transmission mode: polled mode, cyclic mode, sync mode, LSS
Electrical Features
Temperature insensitive IR-opto-receiver-asic with integrated signal conditioning
Connection cap: Status indication with two LEDs
Highly integrated circuit in SMD-technology
Polarity inversion protection
Over-voltage-peak protection
Electrical Data
Interface: Transceiver according ISO 11898,galvanically isolated by opto-couplers
Transmission rate: Max. 1 MBaud
Device addressing: Programmable via SDO telegrams; Encoder with Connection Cap (0CC); Additional adjustable by rotary switches in connection cap
Supply voltage: 10-30 * V DC (absolute limits)
Current consumption: Multiturn: max. 230 mA with 10 V DC, max. 100 mA with 24 V DC
Singleturn: max. 100 mA with 10 V DC, max. 60 mA with 24 V DC
Power consumption: Max. 2.5 Watts
Step frequency LSB: 800 kHz
Accuracy of division: ±1/2 LSB (12 bit), ± 2 LSB (16 bit)
EMC: Emitted interference: EN 61000-6-4; Noise immunity: EN 61000-6-2
Electrical lifetime: >105 h
Mechanical Data
Housing: Aluminum, optional stainless steel
Lifetime: Dependent on shaft version and shaft loading-refer to table
Max. shaft loading: Axial 40 N, radial 110 N
Inertia of rotor: ≤ 30 gcm2
Friction torque: ≤ 3 Ncm (without shaft sealing)
RPM ( continuous operation): Singleturn: max.12,000 RPM; Multiturn: max.6,000 RPM
Shock (EN 60068-2-27): ≤ 100 g (half sine,6 ms)
Permanent shock ( EN 60068-2-29): ≤ 10 g (half sine,16 ms)
Vibration (EN 60068-2-6): ≤ 10 g (10 Hz...2000 Hz); ≤ 10 g (10 Hz...1000 Hz) (with Connection Cap)
Weight ( standard version): Singleturn: ≈ 300g
Multiturn: ≈ 400g
Weight (with connection cap): Singleturn: ≈ 500g
Multiturn: ≈ 700g
Weight (stainless steel version): Singleturn: ≈ 400g
Multiturn: ≈ 500g
Weight (stainless steel version with connection cap): Singleturn: ≈ 1,100g
Multiturn: ≈ 1,200g

Multi-pole magnet target wheel
Bonded multi-pole magnet rotors are used in a wide variety of speed and commutation applications such as to rotary encoders, speedometers and machine controls. Three standard grades of magnetic materials are offered to fulfill a broad spectrum of magnetic field requirements along with a high resistance to demagnetization. Combined with a Nylon polymer binder, they offer excellent dimensional control and tough environmental endurance. Multi-pole rotors can be modified to have other pole patterns, custom compounded binders, or metal inserts for specialized applications.
Features:
Engineering polymer overmolded for high speed operation
Wide range of pole counts
Three grades of magnetic materials
High resistance to demagnetization
Operation from -40 to 125 degrees C
Well suited for general industrial environments
Powdered metal hub
Many additional, non stocked pole counts available

MEI-58 magnetic incremental encoder is by design, a rugged cost-effective industrial grade product that uses magnetic technology to address the weakness of the more frangible optical encoder counterpart.

YUANBEN’s magnetic encoder, just one type of non-contact absolute coders, uses a magneto-resistive effect to sense a change in magnetic field, then amplify the change using an amplifying circuit. A single chip then processes and outputs an analog or digital signal in an absolute position. The magnetic encoder is able to sense, measure and give information on its position within a 360° range without the need for a reference point. It can use an SSI synchronous serial communication interface for signal output or utilize CANopen or Profibus-DP for remote transmission.
Due to the magnetoelectric design, YUANBEN’s magnetic encoder features a shock, corrosion and stain resistance, stable performance and simple structure. Multiple mounting methods are available including clamping flange, synchronous flange, synchro-clamping flange, and through-hole. The outer diameter is optional: Φ28, Φ38, Φ48, Φ60.
Features
The compact structure and magnetoelectric design allow the magnetic encoder to withstand the toughest industrial environments.
High precision, fully digital, no signal interference or zero drift.
3.Baud rate and address code can be set using the dial switch or system software.
Resolution (P/R):4096.
Wide operating voltage range and low power consumption current.
Clamping or synchronous flange conforms to international structure standard.
CANopen communication protocol bus output with up to 110 stations
Applications
Robot industryAutomobile industryPrecision machineryMetallurgy industryIndustrial automationServo motorHeavy duty crane or transport machinery in ports and construction sitesSpeed measurement and power transmission of construction machinery

Descriptions
MEI-58 magnetic incremental encoder is by design, a rugged cost-effective industrial grade product that uses magnetic technology to address the weakness of the more frangible optical encoder counterpart. Intended for low resolution applications, it functions as an incremental angular position encoder when used with a multi-pole permanent magnet target wheel. Direction of rotation can be obtained from the two output channels that are 90° electrically out of phase. The final PPR count can be selected by magnetic pole count of the permanent magnet target. high performance, cost-effective 1Vpp Sine/Cosine output magnetic encoders for harsh or difficult environments.
Features:
1. Magnetic Encoder Pulse Counts up to 3560 Counts per Channel
2. 2 Channel Quadrature Magnetic Encoder Channels
3. Designed to be used with a P44 Magnet Target Wheel ()
4. Low Profile Housing of only 1.9 inches
5. Working Temperature range -40 to 125 °C
6. Rugged Aluminum Housing
7. Through Hole or Blind Hollow Housing Available
8. Non-slotted Bolt Hole Pattern upon request
9. Available with or without internal pull resistors
10. Single-Ended or differential outputs for ABI
11. U/V/W commutation outputs(Open-collector or differential)
12. 8 to 8192 pulses per revolution (PPR)
13. Powered from external +5VDC/24 VDC/12 VDC power supply
14. Current consumption low to 50mA
15. Max speed to 30000 RPM
16. Operating temperature of -40 to +85 °C
17. Allows for a variety of solid shaft, hollow shaft and blind hollow shaft
Industrial Applications
1. Brushless DC motors for electric control or gate valve position control
2. High-power stepper motors, servo motors in mining , metallurgy, molding injection and other
large equipment
3. Spindle position measurement and control of knitting, textile machinery,
4. Servo control position sensing and robot arm control
5. Magnetic encoder for elevator control and speed sensing matched with PMSM
6. Magnetic encoder for inverter, speed sensing and control in subway and high-speed rail field
7. Magnetic encoder for electric vehicle position sensing
8. Magnetic encoder for wind turbine yaw control
9. Servo System for medical equipment
10. High-speed motor spindle control system
11. Angular measurement
12. Industry automation control
13. Robotics
14. Textile industry
15. Precision machine tool
16. Servo Motor
17. Valve control

Description
MDR20-P44B magnetic drum is made of bonded multi-pole magnet; it is used in a wide variety of speed and commutation applications such as to rotary encoders, speedometers and machine controls. Three standard grades of magnetic materials are offered to fulfill a broad spectrum of magnetic field requirements along with a high resistance to demagnetization. Combined with a Nylon polymer binder, they offer excellent dimensional control and tough environmental endurance. Multi-pole rotors can be modified to have other pole patterns, custom compounded binders, or metal inserts for specialized applications.
Features:
Rugged, chip free construction
Wide range of pole counts
Three grades of magnetic materials
High resistance to demagnetization
Operation from -40 to 125 degrees C
Well suited for general industrial environments
Aluminum hub with set screw
Data Sheet of Magnetic Drum
Dimension of magnet (mm): Dia. 32, inner dia. 24, thickness 1.6
Pole number: 44
Br (mT):240
Hcb(kA/m):175
Hcj (kA/m):228
(BH)max (MGOe):1.4
Bs (mT):69
Magnetic pole angle uniform rate:5%
Surface magnetic field uniform rate:Less 25mT
Flexural Strength (MPa):189
Flexural modulus (GPa):15.8
Tensile Strength (MPa):102
Dimension tolerances of the magnetic drum:Less 0.15mm
Shape of the position tolerances:Less 0.1mm
Dimension of Aluminum hub
Mounting Thread (axle hole)
Magnetic pole magnetic field distribution