Non-magnetic Encoders for High Magnetic Field Environments from NUMERIK JENA

Jena, Germany – NUMERIK JENA, sister company of HEIDENHAIN, now offers a line of linear and rotary encoders that are non-magnetic and that have been tested in environments up to 6 Tesla and have no influence on the machine environment. The encoders also can withstand this high magnetic environment without loss of accuracy or resolution and are mechanically stable. Non-magnetic encoders are commonly found in MRI machines, as well as in the semiconductor and microscopy fields. 

NUMERIK JENA’s non-magnetic LIK linear series has a 20 micron graduation on glass and digital versions can output resolutions to 50 nanometers, where the digitizing electronics reside in the connector. With loose mounting tolerances of the scanning unit in relation to the 20 micron scale, and three configurations of mounting the scanning unit, the LIK series provides excellent motion feedback for high magnetic environments.

The RIK rotary series is a kit-style bearingless rotary encoder including a disk with various diameters and line counts, and non-magnetic scanning units to match those diameters.  The various sized aluminum disks containing a 20 micron graduation are epoxied to the customer’s hub design. NUMERIK JENA can also adhere the disks to custom hub designs at the factory with exact specifications and lowest runout errors.

Both encoder systems use the Epiflex Adjustment Tool to enhance the signal margin during installation on the machine. Long cable extensions are also possible for high magnetic field environments.

For more information, visit www.numerikjena.de.

Baumer HS35 Programmable Encoders deliver 60 Arcsecond accuracy

Baumer has unveiled its latest HS35 family of incremental hollow shaft encoders, which include a fully-programmable version, for speed control applications and heavy-duty positioning. The rugged encoders are specifically designed to withstand high-pressure cleaning, shocks of up to 200 g and ambient temperatures ranging from -40°F to +212°F.

Baumer HS35 encoders feature ultra-precise optical scanning system that provides unrivaled positioning with 60 arcsecond accuracy. They are also available in IP67, square wave and sine wave versions.

Offered for shaft diameters from 0.5 inches to 1.0 inches, the encoders can be customized through shaft insert adapters. The isolation shaft inserts offers electrical isolation from voltages of up to 2.5 kv, effectively preventing wear and corrosion. The ShaftLock system of the encoders features large diameter between ABEC5 bearings, allowing the shaft to endure high mechanical loads at up to 5000 rpm speed and 60 arcsecond accuracy.

The HS35 encoders’ robust design includes wall structures and extra durable castings that can withstand prolonged exposure to harsh environments. Lubricants, dual seals and a heavy duty powder coating on the bearing cover and housing protect the encoders from corrosion, enabling operation in almost all types of environmental conditions. In addition, the IP 67’s high performance impermeability seals protect the encoders from high pressure wash down.

Offering fully-programmable index, resolution and outputs, the HS35P allows customization and minimizes encoder inventories. Using user-friendly software, the encoder can be directly programmed through the supply line.

Baumer HS35 encoders are specifically developed to withstand extreme mechanical strain, making it ideally suited for motor and drive control in various heavy duty applications including wind power, oil and gas processing, metalworking, food and beverage processing, printing, material handling, packaging, wood/lumber processing, textile processing and solar/PV module manufacturing.

Baumer launches compact absolute encoder series MHAD

Baumer (www.baumer.com) has unveiled its small absolute encoder series MHAD, which seamlessly combines the functional capabilities of an absolute encoder with the product benefits of narrow dimensions.

With a very compact design, the encoder measures only 50 mm in diameter and 20 mm deep. This makes the encoder easy to fit into tight areas where installation space is limited. In addition, its large through-hollow shaft eliminates the need for additional space at the shaft end, while enabling installation anywhere on the motor shaft.

The new series completes the company’s HDmag encoder portfolio, which excels through absolute reliability, non-contact magnetic sensing and maximum availability. MHAD absolute encoder unites high-precision incremental and absolute signals in a single device. Its additional incremental signal of up to 8192 steps per turn offers speed feedback while its current position will be output as absolute value with 16-bit resolution. The air gap and the large permissible tolerances on axial and radial tolerances allow for quick and safe installation of the encoder. Its LED serves as an installation aide as well as an activity indicator.

In its standard configurations the encoder offers IP67 protection, enabling it to withstand operating temperatures ranging from -40°C to +85°C. The encoder’s magnetic sensing technique and robust design delivers dependable operation not only in humidity and dust but also during severe vibration and shock.

BEI’s HS52 explosion proof rotary encoder revealed

BEI Sensors (www.beisensors.com) has unveiled a space-saving and ultra rugged industrial encoder that meets the required standards and certifications for use in potentially explosive environments. Model HS52 is the industry’s first ATEX and UL rated explosion proof hollow shaft encoder.

This rotary encoder can be operated directly in Zone 1 and Division 1 work environments where ignitable concentrations of flammable liquids vapors or gases are likely to exist in normal operating conditions.

The reliable and rugged rotary encoder eliminates the need for an accompanying Intrinsic Safety barrier, effectively simplifying installation. This also results to a more streamlined feedback system for the explosion proof environments.

Utilizing the explosion proof construction method, the HS52 rotary encoder is fitted in an enclosure that has the capability to contain and withstand even the most volatile gas-to-air mixture internal explosion.

The rotary encoder is equipped with a flexible shaft bore design, allowing it to be rigidly mounted to prevent stress to encoder bearings. The design also provides a more secure attachment to the hazardous area conduit fittings.

In addition, the encoder’s compact hollow shaft design provides engineers space-saving advantages not otherwise found in traditional shafted encoders. As ideal position sensing solution for oil and gas industries, the HS52 is also suitable for use in spray painting applications, solvent refining operations and other explosive environments where operating conditions are extreme and space is a premium.

Incremental encoders

Incremental encoders, like absolute encoders, are used to track motion as well as to determine speed and position. Incremental encoders generally supply square-wave signals in two channels, A and B, which are offset by 90 degrees, or out-of-phase by 90 degrees. This helps in determining the direction of rotation.

The output signals of an incremental encoder only have information on relative position not absolute position like an absolute encoder. In order for the encoder to provide any useful position information, the position of the encoder has to be referenced in some way, traditionally using an index pulse. So the incremental encoder sends incremental position changes to electronic circuits that perform the counting function.

On start-up, the encoder will home in on a known, fixed position, which serves as a fixed reference point going forward. This fixed position can be either fixed by a magnetic point or strip of mechanically by a limit switch.

One traditional limitation of an incremental encoder is that the number of pulses counted is stored in an external or buffer counter which can be lost if there is an interruption of power. For instance, if a machine with an encoder is turned off, the encoder will not know its position when switched on again. The encoder has to perform a homing routing in order to know its exact position, forcing the motor to move until a home limit switch is activated. Then, a counter or buffer will be zeroed and the system will determine where it is relative to fixed positional points. One way around this issue of loss of power is to use a battery backup system. Such a solution ensures that the memory is backed up and can store the count information and provide an absolute count once power is restored.

Standard Quadrature A and B signals used in incremental encoders are shown in the graph above. Electronic circuitry interprets the raw data to determine position as well as the direction of rotation.

Absolute encoders

Encoders can be either absolute or incremental. Absolute encoders have a unique code for each shaft position. Or in other words, every position of an absolute encoder is distinctive. The absolute encoder interprets a system of coded tracks to create position information where no two positions are identical. Another feature is that absolute encoders do not lose position whenever power is switched off. Since each position is distinctive, the verification of true position is available as soon as power is switched on. It is not important to initialize the system by going back to a home base for a reference.

Absolute encoders can be either single-turn or multi-turn. Single-turn encoders are well suited to short travel motion control applications where position verification is needed within a single turn of the encoder shaft. Multi-turn encoders, on the other hand, are better for applications that involve complex or lengthy positioning requirements.

Absolute encoders have a number of advantages. First is the non-volatility of memory. An absolute encoder works as a non-volatile position verification device. True position is not lost if power is lost or the system moves while power is switched off. A continuous reading of position is not needed. This is specifically useful in those applications, such as satellite-tracking antennas, where position verification is key.

Absolute encoders also provide programming flexibility. By removing the need for system homing, the encoders can be controlled to give positioning programs based on setting up reference from point-to-point, rather than from a home position. Additionally, a microprocessor interface module allows for programming various operating parameters, such as resolution.

Safety is another benefit. In some applications where a loss of position could lead to operator injury or machine damage, an absolute encoder automatically provides position verification when the power is switched on.

Absolute encoders also have good immunity to electrical noise. The device determines position by frequently reading a coded signal. Stray pulses from electrical noise will not build up and accurate position is presented again on the next reading.

Magnetic Tape Encoders for Speed and Position Monitoring

Southington, Conn. – Baumer’s HDMag line of high-precision, bearing-less and contact-free magnetic tape encoders is suited for speed and position monitoring on large diameter shafts. Replacing expensive and complicated specialized solutions that require belts, gears, couplings and linkages, the HDMag series of encoders is easy to install and will direct mount onto almost any large-shaft torque motor or generator.

Using Baumer’s patent-pending HDMag MSGP sensor technology, the series consists of a magnetic encoder attached using flexible magnetic tape. The customized tape can be easily buckled onto the drive or generator shaft, just like a belt. With the help of the welded fastener, the tape is tightened on the shaft and can be quickly exchanged when required. The narrow read-head incorporates an integrated dual sensor head that is mounted to a frame over the flexible tape. This takes up minimal space on the shaft and operates without interruption over the fastening gap in the tape ends, and has no effect on the encoder output signal.

The unit can be installed and removed repeatedly without affecting performance, and offers wear-free speed and position feedback with a nearly unlimited service life.

For uninterrupted sensing across the fastening gap, the flexible magnetic tape encoder features an integrated dual sensor head and a signal processing unit (patent pending). The large permissible tolerances on axial displacement (+/- 5 mm) and air gap (up to 3 mm) ease alignment of the sensor head and also ensure  reliable detection unaffected by mechanical backlash and vibrations. The fully encapsulated electronics integrated in the sensor head are protected against soiling, shocks and vibrations. The integrated FPGA-based signal processing allows for high angular resolutions, better than 0.003°, more than 100,000 ppr, and will remain unaffected by thermal shaft expansion.

For more information on Baumer’s HDMag line, visit www.baumer.com.

CUI Adds Line Driver Output to AMT303 Commutation Encoder Series

CUI Inc announced a new addition to its high resolution, low-cost AMT encoder line with the AMT303LD series. The encoder generates standard U/V/W commutation signals for vectoring current to brushless motors.  Resolution can be set through the AMT303 Demo Kit.  Commutation output can accommodate brushless motors with 2, 4, 6, 8, 10 or 20 pole pairs, and is also selectable via the AMT303LD Demo Board.  The AMT303LD offers complimentary incremental A/A, B/B, and Z/Z channels for various servo positioning and startup sequences.  Additional options include nine mounting patterns and ten bore sizes, creating a flexible platform that is able to accommodate many industry standard motors.

The AMT303LD generates position information using CUI’s patented, capacitive code generation system coupled with a proprietary ASIC.  This technology is immune to environmental particulates and magnetic interference, creating a reliable, economical and stable control and positioning solution.  The encoder consumes a maximum 10 mA at 5 Vdc, making it ideal for any application where power consumption is a concern.

Commutation zero position may be set by the demo board, OTZ module or ground trigger, removing the need for time consuming mechanical alignment in the mounting process. The available AMT303LD Demo Kit includes an AMT303LD encoder, demo board, interface cables, documentation software and power supply.

CUI Inc
http://www.amtencoder.com/Product/AMT303

Baumer’s robust stainless steel encoders ideal in harsh environment

Baumer (www.baumer.com), a leading manufacturer of sensors and system solutions for process and factory automation, offers an extensive array of stainless steel encoder designs that is ideal in harsh environments such as in container ship loading facilities, in chemical industry, offshore industry and in food and beverage industries’ bottling processes.

Sensor products utilized in these industries requires specific sealing and housing techniques to protect them from the prevailing adverse conditions. The encoders employed must withstand aggressive media and lubricants, salty air, oils and cleaning agents.

The company’s all-encompassing encoder portfolio comprises absolute and incremental encoders that feature robust stainless steel housings and are specifically developed for operation under extreme conditions. The compact encoders are offered with common housing, as hollow or solid shaft designs and provide IP69K and IP68 protection. Baumer also offers ATEX-certified variants, which are suitable for applications in potentially explosive environments. The encoders deliver the highest degree of flexibility enabling it to seamlessly integrate into automation systems. Customers can select between fieldbus, SSI and Ethernet interfaces such as DeviceNet, CANopen, EtherNet/IP, EtherCAT, Profibus, SAEJ1939, POWERLINK or PROFINET.

One of the highlights of Baumer’s portfolio of stainless steel encoder is the absolute multiturn encoder series “MAGRES hermetic”, which features hermetically encapsulated sensing and electronics. Aside from providing IP69K and IP68 protection, the encoders are also impermeable to fluids. The absolute encoder GE404 comes with optical sensing fitted in robust V4-A stainless steel design, which is compliant to class 1.4435 or class 1.4404. With Viton seals that are ultra-resistant against high temperature and chemicals, the encoders also feature a high 12-bit multiturn and 14-bit singleturn resolution for ultra-accurate position feedback even at speeds of up to 10,000 rpm.

SICK introduces A3M Absolute Multiturn Encoder

SICK (www.sick.com) has unveiled a robust, absolute multiturn encoder that offers the new A3M encoder – a 14-bit sigleturn and 17-bit multiturn or a total of 31-bit output. Integrated with a Profibus output, the encoder features absolute encoders that are native to it, even without an internal power source.

Featuring internal electronics that are resistant to condensation and contamination, the new A3M is ideal for use in outdoor applications and harsh environment. Based on the design of magnetic technology that utilizes few moving parts, the new encoder’s advance versions can communicate through the DP V2, wherein Profibus can be directly used by motion control applications instead of a secondary motion control bus.

The new encoder’s conformal coating for resistance against a high IP rating and condensation makes it suitable for outdoor applications such as cranes and outdoor warehousing systems. The advanced models of the A3M60, which provides the DP V2 protocol, can be utilized in motion control applications where fast cycle times and speed are very important.

Aside from bag forming, palletizers, labeling, filling, sealing, and folding machines, the A3M60 can also be used in collision avoidance and position control applications. Other typical applications where the new encoder can be used include AGVs, assembly machine, welding and paint spraying robots.

The A3M60 is also suitable for the various needs of general manufacturing applications where a Profibus fieldbus network is utilized.

Avago offers smallest reflective encoder

Avago Technologies (www.avagotech.com) has announced the release of the smallest three-channel reflective encoder in the market, the new AEDR-850x encoders.

Avago’s latest encoder is ideal for various applications, including miniature motors, closed-loop stepper motors, copiers, printers, insulin pumps, card readers, and other kinds of consumer, industrial and medical equipment since it provides a built-in interpolation for high-resolution measurement.

For direct sensing, a typical reflective encoder module offers two digital output channels and requires another module for indexing purposes. It needs an external interpolation device for motion feedback applications that requires high-resolution measurement.

Meanwhile, the AEDR-850x reflective encoder has integrated the three channels, photodetecting and interpolator circuitry and an LED light source in a single compact package with a 3.95 mm x 3.40 mm footprint. The encoder delivers high resolution encoding of 304 lines per inch. Its highly-integrated modules allow a new level of miniaturization for applications where space and size are the primary concerns.

“The integrated third-channel, compact size and high-resolution encoding performance of the Avago AEDR-850x modules is truly revolutionary, enabling smaller motor encoding systems than ever before possible,” said Hassan Hussain, General Manager at Avago’s Motion Control Products Division.

“These innovative modules cut design costs and save PCB board space for our customers, and expand the reach of our reflective encoder offerings into the industrial automation and medical segments.”

Aside from providing interpolation of up to 4x, the AEDR-850x encoders also enable several resolution designs by altering the codewheel size. Unlike some devices with Hall Effect, the optical-based modules of the encoders are less susceptible to EMI. Offering a fixed operating temperature range of -20°C to 85°C, the robust encoders are ideal for industrial and commercial operation environments.

HS35 Programmable Encoders from Baumer Offer 60 Arcsecond Accuracy

Southington, Conn. – Baumer announces its new HS35 family of incremental hollow shaft encoders, including a fully programmable version, for heavy-duty positioning and speed-control applications. Available in an IP67 version, these rugged encoders withstand shocks up to 200g, high-pressure cleaning, and ambient temperatures from -40°F to +212°F. The encoders’ ultra-precise optical scanning system delivers unrivaled positioning with accuracy to 60 arcsececonds.  Rugged, accurate Baumer HS35 encoders are available in programmable square wave, square wave and sine wave versions.

The HS35 encoders are available for shaft diameters from 0.5 to 1.0 in. and can be customized further via shaft insert adapters. These isolation shaft inserts provide electrical isolation against voltages up to 2.5kV, preventing bearing corrosion and wear. The encoder’s ShaftLock system with its large diameter between ABEC5 bearings allows the shaft to reliably endure high mechanical loads even at speeds up to 5,000 rpm and 60 arcseconds or better accuracy.

The heavy-duty design of the HS35 encoders includes extra durable castings and wall structures that withstand long-term exposure to harsh environments. Dual seals, lubricants and a durable powder coating on the bearing housing and cover effectively protect against corrosion and allow operation in nearly all environmental conditions. In IP67 versions, high-performance impermeability seals protect against high-pressure wash down. Tether mounting allows for easy installation.

The HS35P offers fully programmable resolution, index, and outputs, allowing customization and minimizing encoder inventories. The resolution is PC programmable to between 1 and 8,192 ppr in increments of one. Zero pulse position/width, HTL/TTL outputs and rotational direction are also programmable. The encoder can be programmed directly via the supply line using the user-friendly software.

Designed to endure extreme mechanical strain, Baumer HS35 encoders are ideal for motor and drive control in a range of heavy duty applications including oil and gas processing, wind power, food and beverage processing, metalworking, printing, packaging, material handling, solar/PV module manufacturing, textile processing, wood/lumber processing, and heavy equipment such as cranes, hoists, elevators, and service vehicles.

For more information on Baumer’s HS35 hollow shaft incremental encoders, visit www.baumer.com/hs35.

www.baumer.com

New Line of 27-bit Resolution Absolute Optical Encoders from Renishaw

Renishaw’s RESOLUTE optical encoder system is the world’s first true absolute encoder capable of 27-bit resolution at 36,000 rpm. The fine-pitch system offers excellent dirt immunity, while delivering market-leading resolution of just 1nm at up to 100 m/s, for both linear and angle encoding applications.

RESOLUTE’s high performance is the result of a unique method of operation. Think of the readhead as an ultra-fast miniature digital camera, taking photos of a scale that consists of a long, non-repeating bar code. RESOLUTE analyzes these photos to determine position with extremely low noise (jitter) and SDE (Sub-Divisional Error). This increases encoder feedback fidelity and ensures smoother velocity control and positional stability.

Using a unique single-track optical scale, RESOLUTE acquires absolute position immediately upon switch-on, without battery back-up, simplifying machine design by completely eliminating the need for reference returns. The system’s ruggedness, ultra-high speed capability and exceptional resolution make it ideal for high-performance lathes, as well as slower-moving axes requiring the highest levels of precision and motion control integrity.

To learn more, visit:

http://www.renishaw.com/en/resolute-absolute-optical-linear-and-absolute-optical-rotary-angle-encoder-system–10852

www.renishaw.com

New Absolute Encoder from Heidenhain

Schaumburg, Ill. –Heidenhain announces a new absolute, inductive rotary encoder. The ECI 119 features a low profile (height of 19 mm, outside diameter 92 mm) and large through shaft (50, 38, or 30 mm), making it well suited for electric motors in many applications, including general automation, electronics and packaging industry, robotics, plastic injection molding machines, as well as on swivel and tilting axes.

Expanding on the established ExI 13xx and ExI 11xx series, the HEIDENHAIN ECI 119 is a single turn, absolute encoder offering 524288 (19 bit) positions per revolution, and provides ±90” system accuracy.

The ECI 119 is a bearingless design, eliminating problems with bearing wear or loading, and concerns of mechanical self-heating of the encoder and shaft currents. If all the mounting tolerances are met, the encoder requires virtually no maintenance outside of contamination protection.

The ECI 119 uses HEIDENHAIN’s EnDat serial data interface. Two types of output are offered:  purely serial data (EnDat21) or serial data with 1 Vpp incremental signals (EnDat 01). The SSI interface can also be implemented, but requires a minimum value order. Not only does EnDat allow the user to transfer incremental and absolute position data, it also enables online diagnostics.

A new version of the Adjusting and Testing Software is available with the ECI 119. This software allows diagnostic checks of the encoder position signals. And the new ExI Mounting Wizard allows the scanning gap and signal amplitude to be checked in order to assess mounting quality.

www.heidenhain.us

Balluff Introduces new rotary encoder

Balluff’s new S2E Rotary BML rotary encoder provides a new level of positional information for applications such as conveyors, speed control, and angle measurement. Rugged, accurate, and easy to set up, Balluff’s rotary encoder is a lower cost, more effective improvement on standard rotary encoder designs. The basic design of the S2E consists of a magnetically-encoded ring and a non-contact sensor head. This assembly installs easily and provides a quadrature output at up to 46,000 pulses per revolution. An available mounting hub allows its magnet ring to be adapted to a wide range of applications.

Balluff’s S2E

• Provides accurate velocity and position tracking of virtually any rotary movement to monitor continuous and/or oscillating rotary shaft motion.
• Converts rotary motion into linear measurement to provide compact linear positioning information.
• Provides continuous feedback allowing PLC-directed set points and electronic cams to be established to make the operation of the host machine more flexible.

Conveyor Applications
The S2E gives a PLC the position information necessary for virtually all conveyor-based manufacturing operational functions such as multiple station error proofing with single station rejection. It also provides conveyor speed control monitoring. Position information provided by the S2E can also be used by the central PLC to develop software driven programmable cams.

Angle Control and Adjustment
The S2E provides accurate angle measurement for any apparatus that revolves around a shaft. For example, the S2E can be mounted on the spindle of a miter saw. An output signal can be sent to a digital display to give the operator an accurate visual indication of the angular position of the saw blade.

Speed Control and Monitoring
The S2E provides accurate control and monitoring of any rotating shaft such as a motor or any rotating equipment. For example, rotational positions of solar reflectors can easily be monitored by the S2E. An index pulse can be used to set home position (due East, for example). Balluff’s rotary encoder has an IP67 rating, which means it can easily withstand outdoor environments.

Balluff
www.balluff.com

Fast EtherCAT Encoders from Baumer

Southington, Conn. – Offering extremely fast cycle times of just 62 ms, Baumer’s  new high speed Absolute ATD EtherCAT Encoders deliver extremely fast positioning, speed control and motor feedback data to simplify communication between drives and control systems in multi-I/O equipment.  These compact encoders experience very little clock phase jitter and are available with optional Power over EtherCAT (PoE) to minimize cabling requirements and associated malfunctions.

As these compact Absolute ATD EtherCAT Encoders measure just 80 x 58 mm, they are ideal for use in limited space applications including robotic and automated systems.  These single or multi-turn encoders are compatible with the CANopen over EtherCAT (CoE) protocol and offer 14-bit single-turn and 16-bit multi-turn resolutions.

Because Power over EtherCAT delivers power and transmits field bus signals using just one cable, Baumer Absolute ATD PoE EtherCAT Encoders are a cost-effective alternative to expensive and complex multi-cable systems.  These encoders are especially suitable for difficult-to-access applications.

These encoders can be used on robotic arms, robotic pick-and-place systems, automated packaging lines, material handling equipment, laboratory automation equipment, medical imaging systems, printing equipment, textile processes machines, theater sets, and in other applications where cable movement and cable life are a concern.

For more information on the Absolute ATD EtherCAT Encoders, contact Baumer Ltd. at (800) 937-9336.

www.baumerelectric.com/usa

Encoder Options for All Angles of Stepping Motors

Oriental Motor announces that encoder options are now available for their 0.36° and 0.72° stepping motors. With the addition of the encoder option to 0.36º and 0.72º stepping motors, Oriental Motor’s entire range of stepping motors (including 0.9 º and 1.8º stepping motors) now has the option for an encoder. Additionally, the stepping motors are available as a stepping motor only or as a stepping motor and driver package.

The new stepping motor encoder options for 0.36º and 0.72º motors are:

• 500 or 1000 pulses/rev
• 2 or 3 channel
• TTL or Differential (line driver type)

For 0.36° and 0.72° stepping motor and driver packages, Oriental Motor has introduced the CRK stepping motor and driver package. The CRK stepping motor and driver package highlights include:

• Pulse input 24 volt driver
→ 500 or 1000 pulses/rev
→ 2 or 3-channel TTL type encoders

• Built-in controller type
→ 500 or 1000 pulses/rev
→ 3-channel differential line driver type encoders

Oriental Motor
www.orientalmotor.com

MicroMo’s 8mm family of DC motors, encoders, gearheads

MicroMo Electronics, Inc. (www.micromo.com) has unveiled a new family of mini-drives with an outer diameter of only 8mm, providing maximum power. This family of drives is an impressive solution with several possible combinations using DC-Micromotors, with micro-encoders and precision gearheads.

The DC-Micromotors series 0816 is available in 3V, 6V and 8V versions, which have an outstanding power-to-volume ratio. The System FAULHABER, a patented ironless rotor, is truly remarkable with its extremely low inertia and low inductivity. Specifications include a no-load speed of up to 17 1000rpm, output power of 0.18W and stall torque of 0.41mNm.

A two-phase Stepper Motor with permanent magnets, the AM0820 is available in 2V, 3V, 5V and has a holding torque of 0.65mNm and 20 full steps per revolution. NdFeB is used as a magnet material to guarantee an excellent size to power ratio. The AM0820 also features two shaft bearings types: preloaded ball and sintered bronze sleeve bearings.

Also available are three all-metal precision gearheads of 08/1, 08/2 and 08/3. The 08/1 planetary gearhead offers user maximum drive torque of 120mNm in intermittent operations and 60mNm in continuous operation. The two additional 08/2 and 08/3 series spur gearheads are available in two executions, convinced with positioning control applications.

The company redefines miniature magnetic encoders with the HEM3-256, providing new possibilities for applications that require miniature motors with encoders. Also available are four resolutions that provide precise positional accuracy and stability control. The encoder is allowed to work with 3V or 5V power sources for low-voltage battery applications. It is also designed for robust reliability with an operating temperature range of -30°C to +85°C, allowing use in extreme applications.

Mclennan introduces new motion control range

The partnership between Allied Motion Inc. (www.alliedmotion.com) and Mclennan Servo Supplies (www.mclennan.co.uk) has been extended with the Surrey-based mechatronics specialists improving its product line coverage of the prominent European and US control manufacturer’s brushless servo motors, direct-drive torque motors, high-performance servo drives and encoders.

The close relationship between the two companies spans over 30 years with thousands of successful, small and precision, brushed and brushless motor applications for Netherlands’ Premotec B.V., which is now one of the four Allied Motion’s Technology Units. The partnership aims to develop a similar success with Allied Motion Emoteq/COPI Technology Unit and will work across the company’s own products that include X-Drive digital servo amplifiers, housed and frameless torque motors up to 2000Nm, ultra-high resolution incremental encoders and Quantum NEMA frame servo motors.

“We are very excited about working with these new Allied Motion products. We have an excellent reputation with Premotec’s small and precision DC motor range and the Emoteq/COPI products offer similar flexibility with a strong standard range and the ability to custom engineer product – even for small quantities,” said Vic Sayer, managing director of Mclennan.

Highlights of Mclennan’s new products include Megaflux range (large separate and frameless rotor/stator servo motors) up to 790mm in diameter with almost five times the speed ratings of competitive units and two times the power density. The motors are characterized by a high-pole count that maximizes rotational smoothness and torque output. The motors’ housed versions, which come with bearing system, position feedback and commutation device, target direct-drive ultra-high precision motion control in demanding automation applications like robotics, where the large through aperture may be utilized to feed services such as optics, pneumatics or electrics.

Pepperl+Fuchs introduces EVM58 Ethernet IP Encoders

TWINSBURG, OH – Pepperl+Fuchs introduces EVM58 Ethernet IP Encoders. Available in single or multi-turn configurations, these rotary encoders provide highly accurate absolute machine position or velocity feedback to the system controller via an industry-standard Ethernet/IP interface. Ethernet IP Encoders are also compatible with a variety of PLC controllers, including industry-standard PLC products from Rockwell Automation, Allen Bradley and Schneider, making them well suited for material handling, automotive and general factory automation applications.

Ethernet IP Encoders come in standard 58mm diameter housings, with a solid 10mm shaft, and clamping flange design. Diagnostic LEDs provide visual status indication to help users quickly correct problems and keep machines up and running. M12 d-coded connectors simplify operation and are used to power, and facilitate communication to and from, the encoder. Ethernet IP Encoders can be used with cable pull devices to determine linear position feedback and transmit that feedback back to the controller.

In addition to Ethernet/IP, Pepperl+Fuchs offers a complete family of encoders for CANopen-, DeviceNet-, PROFIBUS- and AS-Interface operation.

Pepperl+Fuchs
www.pepperl-fuchs.us

HBA4 Absolute Encoders from US Digital

US Digital announces the release of its latest absolute, blind hollow bore shaft encoder, the HBA4. HBA4 absolute encoders are used as azimuth and elevation position sensors in two axes tracking systems, commonly used in solar applications.

This single turn absolute encoder provides 16-bits of resolution over 360 degrees of shaft rotation. The HBA4 is available with a 12mm or 0.500” diameter bore size with either a ball bearing or sleeve bushing bearing assembly and is sealed to an IP66 rating.

The absolute encoder slips over a shaft and is locked in place with a non-marring clamp mount. A flexible anti-rotation tether provides single point mounting for bolt circles ranging from 2.50” up to 5.00” in diameter and compensates for shaft run out. The HBA4 communicates serially to a host via the industry standard RS485 bus.

US Digital
www.usdigital.com/hba4

Unique Rotary Ring Encoder from RSF

Tarsdorf, Austria – A new modular steel tape rotary encoder from RSF Elektronik is now available for measurement applications with diameters of 6 inches (150 mm) to 6 feet (~2 m). Named the MSR 40, this unique and versatile encoder is available in North America through HEIDENHAIN Corporation. Applications for this economical ring encoder include rotary tables, telescopes and medical instrumentation.

The steel tape of the MSR 40 utilizes the proven Single-Field Scanning principle with 200µm grating pitch – offering ease of mounting with high achievable angular resolution. Accuracy of the system is ±30 µm/m with an operating temperature of 0 C to +50 C. With these specifications, this encoder is distinguished by its successful operation at high speeds, especially noteworthy for large measurement applications.

The novelty of the MSR 40 encoder is that it links the ends of the steel tape together with one of two joining mechanisms, depending upon the application. Measurement through a full 360° is thus possible. The MOR version uses a steel ring tensioning cleat for encoders mounted to a steel surface thus allowing for thermal expansion; the MER version uses a rubber gasket with a low-profile tensioning cleat for other mounting surfaces.

Depending on the shaft diameter, line counts of up to 20,000 are available on the MSR 40. All versions offer quasi – absolute positioning via distance-coded reference marks or homing via a single reference mark. The MSR 40 is easily mountable and is available in both standard and custom sizes. Custom orders are welcomed.

RSF Elektronik
www.rsf.at

New Modular Encoder offers flexibility from CUI

CUI Inc. (www.cui.com) unveiled the latest addition to the company’s high-resolution, low-cost AMT encoder line, the new AMT303 series. This encoder generates U/V/W commutation signals for vectoring current to brushless motors. Through the AMT303′s SPI (“Serial Peripheral Interface”), resolutions can be set. Commutation output can hold brushless motors with two, four, six, eight or 10 pole pairs, and it is also selectable through the SPI. The new AMT303 has supplementary incremental Z, B, and A channels for a variety of servo startup and positioning sequences. More options include ten bore sizes and nine mounting patterns, to create a flexible platform which can be paired with many industry standard motors.

The new AMT303 generates position information through CUI’s patented, capacitive code generation system with a proprietary ASIC. Its technology is immune to magnetic interference and environmental particulates, creating an economical, reliable and stable positioning and control solution. The new encoder consumes 10 mA at 5 V DC, making it convenient for any application.

The AMT303 encoder’s SPI affords simpler hardware and higher throughput interfacing than SMBus or I²C. The onboard PIC 16F690 MCU runs at up to 10 MHz providing for high-speed applications using a TCL code. Zero position may be achieved by ground trigger or SPI command, eliminating the need for long mechanical alignment during the mounting process. Moreover, an EEPROM can accommodate up to 128 bytes of user data. A demo board is also available for standalone demonstration, example TCL code and PC access to SPI interface.

“We believe the AMT303 series represents a breakthrough in commutation encoders,” said James Seiler, Encoder Product Manager of CUI. “Users will really be able to leverage the benefits of our ASIC-based system. When compared to optical encoders typically used in commutation applications, the AMT303 will bring a level of ruggedness and ease of use unrivaled in the industry.”

Kübler by TURCK Expands Encoder Line

Minneapolis, MN— Kübler by TURCK has expanded its encoder line to include the Sendix® 5006 2-inch incremental encoder, featuring a completely stainless steel housing and Viton® seals to resist corrosion and physical abuse in harsh plant environments. The Sendix 5006 incremental encoder can handle large fluctuations in temperature, from -40 to 85°C, and is IP67 rated when sealed.

This encoder is available with ten pulse counts up to 5,000 PPR and with push-pull or RS422 outputs. It incorporates a proprietary Safety-Lock™ bearing assembly that has been tested to provide additional protection against vibration and installation errors.

The Sendix 5006 incremental encoder is ideal for use in a wide variety of industries, including food packaging, pharmaceutical, chemical, oil and gas, as well as other challenging applications within corrosive environments or requiring long-term durability.

TURCK
www.turck.us

High-resolution Magnetic Rotary Encoder

Unterpremstaetten, Austria – austriamicrosystems announces the AS5055 magnetic rotary encoder with automatic power-down and wake-up modes. Targeted for low-power battery operated applications such as robotics, the AS5055 is also well suited for other position sensing applications requiring small size and high resolution. The AS5055 integrates four Hall sensor elements, a 12-bit angle encoder, a smart power management controller and an easy-to-use 3- or 4-wire SPI communications interface.

Housed in a small 4×4 mm QFN package, the low-power encoder is the smallest device in its class. Depending on the readout rate, the current consumption is reduced to µA-levels, e.g. 50µA average at 10 measurements per second – the lowest in the industry.

Only a few passive components and a magnet rotating above the chip are necessary to assemble the encoder systems. The AS5055 performs all angle calculations as well as automatic power-up and power-down on–chip. It only draws current, when a new measurement is requested by the host controller. As soon as the acquisition of a measurement is completed, the AS5055 automatically suspends to power-down.

Josef Janisch, product marketing manager at austriamicrosystems, stated, “This is the industry’s smallest 12-bit magnetic rotary encoder available. It also offers the lowest power consumption due to automatic shutdown and wake-up modes. This is ideal for battery equipment, as it extends battery life. In addition, the industry standard SPI interface offers an easy-to-use connection to common microcontrollers.”

The AS5055 is available in a tiny 4×4 mm 16-pin QFN package, operates from a 3.3 volt power supply, and has an ambient operating temperature range of -20 to +85°C.

austriamicrosystems
www.austriamicrosystems.com

Absolute Multi-turn Encoders with Integrated Servo Motors from JVL

JVL Industri Elektronik’s integrated servo MAC400 and MAC800 can now be delivered with built-in absolute multi-turn encoders, with a multi-turn resolution of +/-2048 whole turns, and a single-turn resolution of either 8000 or 8192 (software-selectable) with option for higher resolutions.

Motors equipped with absolute encoders will remember their positions while powered off, thus typically eliminating a zero search operation on start up. The position is stored mechanically using toothed wheels, so there will not be any of the problems with batteries that run down, or memories that loose information, that many other systems have.

The full absolute encoder position is available at all times for use by a PLC over any of the serial or fieldbus interfaces and can be used freely in a program.

JVL International
www.jvlusa.com

New Extreme Encoder from Leine & Linde

Strängnäs, Sweden – The new Extreme 1000 series from Leine & Linde offers encoders for severe environments. Available in North America through HEIDENHAIN Corporation, the measurement and function range on this Leine & Linde encoder is especially designed to meet the exceptional requirements of the steel, crane and mining machinery industries. In such applications, the encoder is exposed to extreme mechanical stress, vibrations and shock, as well as dusty environments with high temperatures.

With its sturdy bearings and enclosure, the Leine & Linde 1000 series encoder achieves extraordinary durability in all applications with similar demands. The enclosure, rated IP67, easily protects the encoder’s internal components from dust and liquids. Stainless steel housing is available as a special option.

Different incremental and absolute versions of the 1000 series are available, and a combination of the various encoder types can even be integrated in the same 1000 series product. For the first time ever, absolute pulse encoders with the PROFIBUS interface can now be used in extremely tough industrial environments by using this 1000 Series from Leine & Linde. The absolute variants are also available with interfaces such as SSI, EnDat, CANopen, DeviceNet™ or with a parallel output with resolutions up to 25 bit.

Leine & Linde
www.leinelinde.com

CUI Launches Updated Website for AMT Encoder Series

TUALATIN, OR – CUI Inc announced that it has launched a new version of amtencoder.com, a website dedicated to their proprietary AMT modular encoder series. The site now features detailed product pages, a resource area with technical documents, videos, frequently asked questions, a news section, and an inventor’s bio. CUI’s VP of Marketing Jeff Schnabel commented, “Users of the new amtencoder.com can expect to find a wealth of resources on this exciting technology and the products that utilize it.”

The AMT encoder has been designed with proprietary, capacitive, code-generating technology that represents a breakthrough in cost vs. resolution. Capacitive technology holds numerous advantages over the optical technology typically used in today’s modular encoders. The AMT’s design allows users to select from a range of resolutions via an on-board dip switch, creating flexibility for companies utilizing multiple encoders in their applications. Additionally, common problems associated with optical encoders, including fragility of the optical disk, LED burn-out, limited temperature range, and high current consumption are eliminated by capacitive technology.

The AMT is available immediately through Digi-Key starting at $29.95 for 1 piece. Contact CUI directly for OEM quantities.

CUI Inc
www.cui.com

Leine & Linde Offers Robust Encoder with DeviceNet™

Strängnäs, Sweden – Leine & Linde is now introducing the availability of DeviceNet™ in the Leine & Linde 600 series, the highly robust ø 58 mm fieldbus encoder series. This support for fieldbus interfaces extends the range of applications for this already useful absolute rotary encoder.

This Leine & Linde series supports 13-bit singleturn or 25-bit multiturn with screw terminal or miniature M12 connection. Mechanically, various shafted- and hollow-shafted versions are available. The DeviceNet™ encoder supports encoder profile revision 2 and the functionality has been fully tested in compliance with the ODVA conformance test.

Overall, fieldbus technology is rapidly gaining acceptance and integration into automation applications worldwide. Based on network topology, system requirements and performance, various types of fieldbus systems are available, all developed and supported by individual standardization organizations. The key principle of fieldbus technology is to enhance device functionality, achieve communication transparency, simplify and standardize installations, as well as limiting the installation and maintenance costs. Sensors, like encoders, with support for various fieldbus interfaces have been available for several years and are increasingly gaining in acceptance and installed market share.

www.leinelinde.com

AV850 Ultra-Durable Encoder

The AV850 8.5” FC-face modular magnetic encoder from Avtron Industrial Automation is designed to eliminate encoder failure and drive trips.

The self-tuning electronic sensors have full built-in diagnostics, to warn of any problems before they stop your process. The 4X larger rotor-to-sensor gap makes installation simple, and eliminates scraped rotors. The wide rotor permits the AV850 to keep working even with large motor shaft movements, or less-than-perfect installation. There are no wearing parts or bearings. AV850 magnetic sensors are fully sealed against dirt and liquids, protected from wiring errors, and operate from -40ºC to +100ºC. Resolution up to 4096 PPR is available (single or dual independent outputs), offering high precision in tough applications.

www.avtron.com