Mechatronics Canada

September 22, 2022

 

MC POSITAL LINARIX Sensors Rugges Linear Position Sensor with Optimized Accuracy 1 400x275

POSITAL LINARIX linear positions sensors have been updated with extra-heavy-duty draw-wire mechanisms and with a convenient pre-scaling option for devices with analog communications interfaces. LINARIX position sensors are ideal for a wide variety of applications, including medical equipment, packaging and materials handling systems, forklifts, overhead gantries, lifts, and flow control gates in water management systems.

LINARIX sensors combine a multi-turn absolute rotary encoder with a robust draw-wire mechanism. As the wire is drawn off the device’s spool, the encoder measures shaft rotation and reports the result to the control system. These devices are both accurate and durable, with draw-wire mechanisms that are rated for over one million cycles. Furthermore, the rotary encoders are based on non-contacting magnetic measurement technologies that are immune to the wear or corrosion that can degrade the accuracy of potentiometer-based draw-wire devices. Analog, DeviceNet, CANopen and SSI output interfaces are available.

LINARIX sensors with analog output are programmed in the factory so that the output range (e.g., 0 – 10 V, 4 – 20 mA) spans the full measurement range of the draw wire mechanism. Customers also have the option of specifying the measurement range required by their application. In this case, the sensors will be pre-programmed at the factory so that the output range exactly matches the range of distances that the device will encounter when it is in service. This will simplify setup, improve the accuracy of analog control systems, and make it easier to install LINARIX sensors as drop-in replacements for older linear sensors, such as string pots.

Users can also set the measurement range for their analog LINARIX sensors in the field with POSITAL’s convenient UBIFAST programming tool, making it easy to fine-tune the instruments or update them to accommodate modifications to the machines where they are installed.

New ultra-heavy-duty versions are available with environmental protection ratings up to IP69k. These are designed to stand up to high-pressure water jets from pressure washers making them a great choice for concrete-placing boom trucks and other construction equipment. Special models will be available with a built-in tilt sensor (inclinometer) to track both boom angle and extension from a single device.

Finding the right LINARIX sensor for a particular application is straightforward. The web site www.postial.com provides a powerful product finder tool that enables a customer to select the product features required for each application, then zero in on the appropriate product.

 

To learn more about LINARIX sensors, click here 

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Featured Article

MC What to Consider When Choosing a New Motion Control Solution 1 400x275

When it’s time to consider a new motion control solution for your application, rule #1 is “Solve the problem, then worry about the design.”

This is easier said than done, but not if you apply a disciplined, time-tested framework. First, you must clearly understand the problem and the local environment. Failure to do so often results in a suboptimal motion control solution or complete failure.

Secondly, the designer should evaluate the application in light of proven existing motion control solutions. The engineer must also take stock of their skills and the expertise of the team in order to effectively choose the right options and to accurately anticipate development time and resources.

Before choosing any motion control products, the design engineer needs a set of principles to guide his or her selection. Long term experience and common sense has taught us seven important, but often overlooked, principles. 

These key learning have been encapsulated in a simple notion known as the SHAIRED paradigm:

  • •Simplicity of design to reduce problem-causing complexity and cost
  • Homework; calculate the required torque, inertia, duty cycle, etc.
  • Analysis of the application and alternatives must be thorough
  • Integration of the system into existing factory automation
  • Redundancy built in to a system to exceed performance expectations and deal with unexpected changed in load and operating parameters
  • Economical solution for the short and long term.
  • Development time must be accurately estimated

Using the above guidelines during motion control system design, evaluation of alternatives, and final product selection will help increase the odds of application success.

To read more, click here 


 

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