The Drives and Motion Division of Yaskawa America has introduced the Junma AC Servo, a device designed to make set-up a simple matter of connect and go.
The background: The Junma AC Servo utilizes servo technology that provides a plug-and-play alternative to traditional stepper technology. It is designed to require no parameter settings or gain adjustments.
What: The goal of the plug-and-play concept is to attain optimum servo performance without time-consuming setup. According to Yaskawa, the Junma accepts a pulse reference input from the host controller or PLC (programmable logic controller). After connection, the user selects the reference pulse switch setting on the amplifier to match the reference output on the controllers. Connect the power and feedback cables, and the motor is ready to run, providing high torque output at speeds up to 4,500RPM.
Yaskawa says advanced control functionality is also available with Junma. Adaptive tuning and vibration suppression functions are designed to simplify machine commissioning while maintaining steady high-precision positioning and optimum efficiency. Other functions include jogging, homing to marker pulse, electronic gearing, and torque limiting.
Junma features four available servo motor and amplifier sets with rated outputs ranging from 100W to 750W capable of both 100V and 200V input voltages. Servo motor feedback is provided with a 16-bit incremental encoder, proving a resolution of 65,536 pulses per revolution. Additionally, Junma conforms to UL and DE industry standards and complies with the RoHS lead-free directive.
Price/availability: The Junma AC Servos are available on a quotation basis through Yaskawa dealers and distributors. Contact Yaskawa for more information.
This is a good question, apparently posed by one who has not participated in such a project previously. The startup and setup of a servo system in a first-off machine, such as assorted industrial machines that are essentially custome built for a specific operation, depends on quite a few variables. The very first element of startup is the verification that all of the connections are correct, and that all of the sensors signals are of the correct polarity for the application. this often is done at the same time as the initial power-up and run, where a servo package is manually controlled to drive to the extreme ands of motion so that these limits may be set. After limts are set so that the servo will only drive where it should, an attempt to run the desired motion profile at a reduced speed is made, with attention being concentrated on accuracy and performance, looking for any instability. During this time the velocity is normally increased and proportional and derivative gain are increased to approach the intended performance, normally measured in terms of cycle time and accuracy. After the goals of required cycle time at specified accuracy are reached, there is usually some experimentation done to see how close to instability the system is, as well as checking to verify actual accuracy and repeatability. Integral gain may be needed in order to assure continued accuracy of position or velocity.
Presuming that the rest of the system, including all of the mechanical portions, do not need modification, the whole procedure may run from a half hour up to several hours, with the length of time depending primarily on the effort needed to verify that the system is accurate and stable.
One of the challenges new with digital servo controls is the different ways that the variables such as dirivative and integral gain terms can be done. Different algorithms can provide functionality that is very different from what traditional analog implementations of classical servo theory would describe. This is an area where manufacturers documentation makes a great deal of difference.
Yep, Beth, installation is an issue. It usually involves service companies and vendors and lots of time. In recent years, automation vendors have worked to make installation easier, less time consuming and ultimately less expensive. Thus the big emphasis on these new devices on how simple they are to deploy.
How taxing and time consuming is the set-up process associated with traditional servo and stepper technology? Is this a common pain point for engineers?
Using almost 200 light-emitting diodes in the front and back of the new 2014 CTS, Cadillac designers are showing how LEDs can change the character of a vehicle.
We looked at a number of sources to determine this year's greenest cars, from KBB to automotive trade magazines to environmental organizations. These 14 cars emerged as being great at either stretching fuel or reducing carbon footprint.
From Dell / Intel® New Paradigms in Design Work Scott Hamilton, vertical market strategist for Dell Precision workstations, 5/2/2013 3
Early in my career, I worked as a draftsman and remember the days of drawing on vellum with numbered pencils and Mylar with plastic lead. This was a fun experience in the sense that I ...
I've been using workstations for more than 10 years and love finding ways to get more performance from my system. With demanding professional applications that require more power each ...
A lasting memory from my first job as an engineer in an auto assembly plant is standing on hard concrete at six in the morning, vending-machine coffee clutched in hand, listening to ...
A quick look into the merger of two powerhouse 3D printing OEMs and the new leader in rapid prototyping solutions, Stratasys. The industrial revolution is now led by 3D printing and engineers are given the opportunity to fully maximize their design capabilities, reduce their time-to-market and functionally test prototypes cheaper, faster and easier. Bruce Bradshaw, Director of Marketing in North America, will explore the large product offering and variety of materials that will help CAD designers articulate their product design with actual, physical prototypes. This broadcast will dive deep into technical information including application specific stories from real world customers and their experiences with 3D printing. 3D Printing is
To save this item to your list of favorite Design News content so you can find it later in your Profile page, click the "Save It" button next to the item.
If you found this interesting or useful, please use the links to the services below to share it with other readers. You will need a free account with each service to share an item via that service.
Tweet This
1 
