From November 27 to November 29 we will be exhibiting at SPS IPC Drives in Nuremberg, the most important exhibition for the professionals in the Automation world.
You can find us in hall 7A booth 146. Make sure to try out our freshly baked waffles with cherries and cream!
THIS YEAR’S HIGHLIGHTS ARE
Kit Encoders for Servo and Stepper Motors
POSITAL’s new family of kit encoders provide the manufacturers of motors and other machinery with rugged, accurate and cost-efficient tools for building rotary position feedback into their products. The new kit encoders are based on POSITAL’s highly successful self-contained magnetic rotary encoders. Now however, the core components of these instruments are available as separate assemblies that can be readily integrated into other products.
POSITAL offfers now also through hollow kit encoders which are designed for installations where there are benefits to having the measurement element fit around a machine’s shaft or axle. The kit portfolio expanded to also include compact incremental optical kit encoders which are optimized for speed control of small drives, low power motors and stepper motors. These devices are simple, robust and easy to install,
Absolute Multiturn Without Battery or Gear
17 Bit Resolution
Multiple Interfaces: BiSS-C, BiSS Line (One Cable Technology), SSI, Incremental
Quick, Simple Assembly and Disassembly
Mounting Compatibility with Common Incremental Kit Encoders
Wiegand sensor products from POSITAL reflect the knowledge from a full decade of experience using Wiegand-effect base revolution counters. The high performace sensors are assembled using SMD mounting technology and can be used for revolution counters in absolute rotary encoders as well as in other applications, e.g. gas or water meters.
Production Since 1974 – Started by John R. Wiegand
Proven In Encoders & Water Meters Since > 10 Years
Inclinometers with Dynamic Acceleration Compensation
POSITAL has introduced new versions of its TILTIX inclinometers that can provide reliable tilt measurement for moving equipment. These new devices use a combination of electro-mechanical accelerometers and gyroscopes to provide accurate measurements, even if the instruments are subject to strong accelerations.
Compensation of External Accelerations
Clean Measurement During Dynamic Movements
Optional Output of Acceleration and Rate of Rotation
Well Protected up to IP69K
Compact and Robust Die-cast Housing with Integrated T-Coupler
CLOSED-LOOP MOTOR FEEDBACK WITH THE
Upgrade Your Existing Motion Control Application
POSITAL has expanded its line of kit-style encoders for feedback for servo and stepper motors with new models that utilize the same mounting form factor as incremental kit encoders from US Digital, Broadcom and other manufacturers.
Mechanical Drop In Replacement for Easy Upgrade to Absolute Position Control
Same Footprints as US Digital’s E5 Models and Broadcom’s (Avago) HEDS-5500 Models
Identical Assembly Procedure – No Training Required
Various Hub Diameters from 4 mm to 10 mm (and 1/4 to 3/8 inch)
Magnetic Technology Which Is Generally More Robust Than Optical
Improved Connectivity via M12 Connector Additionally Available
POSITAL kit encoders provide absolute position feedback so that the control system always has complete information on the physical position of the mechanical components that it is directing. “Absolute position feedback is a natural way of providing accurate position control” comments Jim Stevens, market specialist for robotics at POSITAL. “Almost any position feedback application could be absolute-based. Many current systems were designed around incremental encoders because incremental feedback devices were historically much less expensive than their absolute counterparts.” However, with the introduction of POSITAL’s absolute kit encoders at prices much more in line with incremental devices, system designers no longer have to work around the shortcomings of incremental feedback in an absolute position world.
Incremental encoders are effective for speed control. However, to monitor absolute position, the controller needs to maintain a complete count of the number of pulses received from the encoder. This can lead to problems. If, for example, the pulse count becomes corrupted due to a power outage, or if the control system fails to update the pulse count when the machine moves, positional accuracy is lost. The usual remedy is to “re-home” the machine by returning it to a known reference position and zeroing the pulse counts. By contrast, absolute encoders measure position directly. After a power outage, the controller can re-establish complete knowledge of the position of mechanical components by simply polling the sensors and reading their rotational position.
Multiturn Absolute Kit Encoders Provide Robust Solution
Multiturn Absolute Kit Encoders from POSITAL are based on magnetic sensing technology which provides a very robust encoder solution. The multiturn counting system is powered by Wiegand wire energy harvesting technology, which enables the absolute encoder to maintain true absolute position over power cycles and rotation of the encoder during power off conditions.
With 17 bits (131072 positions) of single turn resolution and 16 bits (65536 turns) of multiturn range, KCD Absolute kit encoders from POSITAL are ideal for position control applications.
NEW CANOPEN MAGNETIC ABSOLUTE ROTARY ENCODER
WITH CONNECTION CAP
Intuitive Configuration of CANopen encoders for factory automation
POSITAL’s IXARC magnetic absolute encoders with CANopen interfaces are now available with an optional “connection cap” that makes device configuration and troubleshooting simpler and more intuitive.
Robust measurement technology
30% more compact than the optical version
Diagnostics via LEDs
On site configuration of the address and baud rate via rotary switches
Hardware setup of the termination resistor
Up to 16 bit Single-Turn, 32 bit for Multi-Turn; battery-free
Flexible installation (cable gland, connector), easy in maintenance
Separation or combination of power and communication cables
High protection degree up to IP 66/67
For previous generation IXARC magnetic encoders with CANopen interfaces, device setup was accomplished by updating software parameters, requiring special tools and expertise. The new connection cap interfaces contain three rotary switches that enable the installer to define the node ID and baud-rate directly with a small screwdriver. There are also diagnostic LEDs on the backside that indicate device and network status. With eight screw terminals inside the cap, the user can easily install cables for power supply and bus-in bus-out. A slide switch can be set to activate a termination resistor when the device is located at the end of the network, reducing installation costs.
Excellent Choice for a Variety of Industries
IXARC magnetic absolute encoders with CANopen interfaces are ideal for a wide range of motion control and factory automation applications. Compared to optical encoders, they are almost 30% more compact, with superior resistance to shock and vibration loads. Available IP 66/67 protection makes these devices suitable for harsh environmental conditions. Single- and multi-turn models are available; for multi-turn versions, the rotation counter is self-powered, with no need for backup batteries and a measurement range of four billion revolutions (32 bits). A variety of connection cap options are available, including cable glands for cables of various lengths and M12 connectors for use with pre-assembled cables. Connection caps with two or three connectors make it possible to connect multiple devices in series (daisy chain), without T-couplers.
FRABA GROUP CELEBRATES 100TH BIRTHDAY WITH STRONG FINANCIAL PERFORMANCE AND MARKET GROWTH
The international FRABA Group, which is about to mark the 100th anniversary of its founding, has enjoyed a year of significant growth in sales and profitability. In fiscal 2017 (ending December 31) turnover increased by 21.5% over the previous year, with total sales revenues of € 31.5 million. Growth has been driven by strong performance of the Group’s two product-oriented business units: POSITAL (industrial position/motion sensors) and VITECTOR(safety/security systems for large motorized doors). FRABA now has 220 employees, located at offices in Europe, Asia and the USA.
“Our success has been the result of hard work and careful planning” comments Christian Leeser, majority shareholder and CEO of the FRABA Group. “Innovative products, such as our high-resolution IXARC magnetic rotary encoders and the motor feedback Kit Encoders have been well received by the market”. Leeser continues: “Our future success will be supported by our Aachen-based R&D center, which is making significant progress in the development of innovative signal processing algorithms for of our magnetic encoder products and improved performance from our Wiegand wire energy harvesting technologies.”
While the VITECTOR business experienced significant growth, especially in North America, the largest area of advance was in the production of compact Wiegand devices for energy harvesting. In 2017, production of these ‘mini-power plants’ (which convert rotary motion into electrical energy through a magnetic process) more than doubled. FRABA, which is the exclusive producer of Wigand wire, makes use of this technology in its self-powered rotation counters for multi-turn encoders. It also supplies Wiegand modules, packaged as surface-mountable devices, to manufacturers of gas and water meters. Here, the energy harvesting capability is used to eliminate the need for external power or batteries. There are now more than 500,000 Wiegand devices in use worldwide.
One-stop Shop for All Your Atex Encoder Accessories
Our product portfolio has expanded now to include explosion proof accessories. These accessories are the perfect pairing for our explosion proof encoders which can operate safely in atmospheres where there are potentially dangerous levels of explosive gases or dust. Additionally, these accessories can be used with encoders rated Zone 1+21 and/or Zone 2+22 .
Rated Zone 1+21 and/or Zone 2+22
M20 & M12 Blind Plugs
M20 & M12 Cable Glands
Jaw Couplings for Solid Shaft Encoders
Draw Wires for Linear Measurement
Adapter flanges Available on Request
Application and Industries
POSITAL offers unique sensors to meet the needs of industries such as:
Measuring Wheels: A Great Solution for Equipment Positioning Tasks
POSITAL has introduced a series of measuring wheel accessories for its IXARC family of rotary encoders. When one of these wheels is mounted on the shaft of an encoder, the result is an accurate and reliable instrument for measuring linear motion and position.With the new measuring wheels, POSITAL provides a very convenient way to make linear displacement measurements while taking advantage of the proven performance of our extensive line of rotary encoders.
A Linear Measurement Range of up to 500 Kilometers!
The new measuring wheels are available in circumferences of 200 mm and 500 mm. When fitted to multiturn IXARC absolute encoders, this would translate into a linear measurement range of up to 500 kilometers!Three rim treatments are available to ensure good traction between the wheel and a variety of surfaces.:
Textured (knobby) Polyurethane
What is a Measuring Wheel? Watch and Learn!
Combination of Measuring Wheels and Programmable Incremental Encoders
POSITAL also offers great benefits from the combination of measuring wheels with our programmable incremental encoders. With this arrangement, a user could define exactly how many pulses the instrument would produce for a defined unit of linear motion. IXARC programmable encoders can be easily calibrated at the job site using POSITAL’s convenient UBIFAST programming tool.
POSITAL has extended its portfolio of rotary encoders with a new family of through hollow incremental encoders. These devices are designed to be installed with the machine shaft passing through the sensor. They can be used to monitor rotary motion in a wide variety of machinery, including servomotors, material handling equipment and printing presses, offering cost-effective, space-saving solutions. They can be easily installed between the body of the motor and other components mounted on the shaft.
Easy to Install, No Shaft Alignment Required
Compact, Adjustable, and Versatile Design
Variety of Shaft Bore Sizes from 10mm to 42mm, Including Imperial Sizes
Install Directly on Shaft, No Need for Extra Coupling
Wide Variety of Applications
Large Variety of Configurations
POSITAL’s through hollow encoders are available for shaft diameters ranging from 3/8 inch (9.5 mm) to 1-3/4 inch (44.5 mm). The smaller units (up to 14 mm shaft opening) have an external diameter of 2-1/4 inch (58 mm), while the larger units (5/8 inch to 1-3/4 inch shaft size) have external diameters of 3 or 4 inches (77 or 100 mm). Available resolutions for these devices extend from 360 PPR to 4096 PPR (pulses per revolution).
All through-hollow encoders have rugged aluminum housings and environmental protection rated at IP65, ensuring longevity and high levels of operational safety. All variants are available with a variety of communications interfaces , including RS422 (TTL) 5V or 11-30V and Push-Pull (HTL, 5-30V). Connection options include built-in cables or MIL-type connectors.
POSITAL’s Wiegand assemblies offer a compact and efficient way of harvesting power for electronic circuits in electromechanical devices, eliminating the need for backup batteries.
The operating principle of POSITAL’s Wiegand modules is simple. A “Wiegand wire” is a short length of specially prepared Vicalloy (vanadium-iron-cobalt) wire. When exposed to a changing external magnetic field (e.g. a nearby permanent magnet mounted on a rotating shaft) the Wiegand wire will initially retain its original magnetic polarity, and then abruptly ‘flip’ its polarity when the change to the external magnetic field reaches a certain threshold. This sudden change in the magnetic state of the core induces a current pulse in a copper coil wound around the Vicalloy core. This current pulse is very short-lived, but the energy harvested from the mechanical movement of the magnet can be captured and used to activate a low-power electronic circuit. An important feature of the Wiegand effect is that the amount of electric power generated with each reversal of the magnetic polarization is constant and completely independent of the rate of change of the external magnetic field, even if this happens very slowly. POSITAL Wiegand modules have been used to reliably power rotation counters in tens of millions of devices, including multi-turn rotary encoders, gas and water meters.
Production Since 1974 – Started by John R. Wiegand
Proven In Encoders & Water Meters Since > 10 Years
Used In Access Cards For > 30 Years
Power Supply For Future IoT Applications
High Energy Output of ~170 nJ
“The process for making Wiegand wire from raw Vicalloy wire was invented by John Wiegand in the 1970’s” comments Christian Fell, Chief of Technology Development for POSITAL-FRABA. “It involves a complex set of steps, including cold-working the wire through a combination of stretching and twisting, then heat-treating the product to lock in the desired characteristics.” POSITAL acquired the original wire-conditioning machinery and intellectual property from the Wiegand estate in 2013. Fell continues: “This acquisition has meant that we have reliable supply of Wiegand wire. It also gave us an opportunity to refine the manufacturing process for improved product quality. Thanks to our research, we can now produce wires that reliably generate 190 nanojoules of energy at 7 volts with each polarity flip”.
Wiegand assemblies are a core component in POSITAL’s IXARC multiturn absolute rotary encoders, providing a maintenance-free method for powering the counter that records the number of complete rotations that the device experiences. POSITAL also offers Wigand assemblies to other manufacturers. These consist of a 15mm length of Wiegand wire surrounded by a copper coil, all contained in an SMD-mountable plastic structure. Wiegand wire production is carried out at locations in the U.S. and Europe, ensuring a stable, reliable supply chain. These assemblies can be used wherever low-cost, zero-maintenance, battery-free energy harvesting systems are needed to energize electronic counters and other low-power electronic devices.
NEW HEAVY DUTY INCREMENTAL AND ABSOLUTE ROTARY ENCODERS
Built to Stand Extreme Environmental Conditions
IXARC heavy-duty incremental and absolute rotary encoders are based on a housing design that has a 25-year record of surviving the toughest conditions. These sensors feature extra rugged impact-resistant Type 316L stainless-steel or aluminum housings and seals rated to IP67. Like other POSITAL products, the heavy-duty encoders are available in a wide variety of configurations.
High Mechanical Shaft Loads (up to 250 N Axial, 350 N Radial)
High Shock and Vibration Impact (200G and 20G Respectively)
Type 316L Stainless-steel or Aluminum Housings
Shaft-lock Mechanism Protects Internal Components
Wide Variety of Configurations
Dual-function Models with Incremental and Absolute Outputs
Incremental and Absolute Versions Available
Like other POSITAL products, the heavy-duty IXARC encoders are available in a wide variety of configurations. Incremental versions have resolutions (pulses per revolution) of up to 2500 PPR (pulses per revolution), while absolute versions are available with 16-bit resolution (.005°). Multi-turn variants of the absolute encoders have measurement ranges as high as 16,384 revolutions (14 bit). Other resolutions are also available for both incremental and absolute encoders. Incremental variants are available with Push-Pull (HTL) or RS422 (TTL) communications interfaces, while absolute models can be provided with either CANopen or SSI interfaces. Dual-function models are available that provide both incremental and absolute outputs.
At POSITAL, we understand that our customers can encounter extreme conditions with special requirements. Our small-batch approach to manufacturing is well suited to producing customized mechanical and electronic solutions in a cost-effective and timely manner.
POSITAL IXARC encoders are available with rapid delivery anywhere in the world. Lead times for most configurations are less than 5 working days.
Applications and Industries
These devices are suitable the toughest applications:
POSITAL is expanding our incremental encoder family to add our line of draw wire sensors. These new programmable linear sensors allow for even more versatility to our ever expanding LINARIX series. A unique Internet-enabled configuration management system for programmability lets our users update and program these sensors on the spot.
Variety of measurement lengths, from 1.25m to 15m
Default resolution 0.1mm, configurable using UBIFAST
Simple and adaptable installation
Cost effective solution for accurate linear positioning
Rugged design for high reliability and low maintenance
Large Variety of Configurations for Any Application
New Incremental LINARIX draw wires are offered with a wide variety of mechanical features, connector types and connection interfaces with economical options. With over a million possible choices, you can find variants that will fit directly into their equipment with minimal modifications. Customize any PPR to your application! Distributors can hold a relatively small stock of our standard models and program the draw wires for as-needed applications.
Great for applications in Material Handling, Medical Equipment, and Mobile Machinery
Finding Easily the Right LINARIX Draw Wire Sensor for Your Application
Use our powerful product finder tool that enables you to specify the product features required for your application and then quickly select the best available products.