Sensor-actuator wireless industrial network technologies

When deciding among wireless industrial networking technologies, remember that there are different kinds of wireless. For industrial applications, there are at least four, and two are compared in the radar graphic shown.

05/22/2012


When deciding among wireless industrial networking technologies, remember that there are different kinds of wireless. For industrial applications, there are at least four, and two are compared in the graphic shown. (The other two are computer standards like Wi-Fi or Bluetooth and long-distance radio as used with RTUs.)

Radar chart estimates differences between wireless sensor and actuator networks for factory automation and process automation plotting suitability across 12 logarithmic axes. Courtesy: PI (Profibus and Profinet International), www.profibus.com

For actuator/sensor level wireless as compared in the graph, there are two unique application spaces: factory automation and process automation.

Compared to factory automation, wireless networks in process environments are characterized by slower update times and higher power requirements (though used intermittently). Wireless process devices are often powered by batteries or scavenged power (power generated by vibration, for example). Process wireless technologies are transitioning from proprietary to WirelessHART and ISA100.

Wireless factory automation sensors and actuators are often called upon to cycle with millisecond update times. These devices can be powered by the radio waves. Factory automation wireless uses proprietary technology today, but PI (Profibus and Profinet International) is developing a standard that uses the IO-Link protocol wirelessly.

Often wireless process and wireless factory devices are installed where Wi-Fi and Bluetooth are in use. Because the wireless spectrum is a limited resource, attention must be paid to avoid interference. A wireless site survey is a good starting point.

- Carl Henning is deputy director, PI North America, Profibus and Profinet, in North America (formerly PTO); Edited by Mark T. Hoske, content manager CFE Media, Control Engineering, Plant Engineering, and Consulting-Specifying Engineer. He can be reached at mhoske(at)cfemedia.com.

www.us.profibus.com 

www.AllThingsProfinet.com 

www.bluetooth.org

www.Wi-Fi.org

www.wirelessHart.org 

www.isa.org/isa100

http://controleng.com/wireless

http://controleng.com/networks



No comments
Consulting-Specifying Engineer's Product of the Year (POY) contest is the premier award for new products in the HVAC, fire, electrical, and...
Consulting-Specifying Engineer magazine is dedicated to encouraging and recognizing the most talented young individuals...
The MEP Giants program lists the top mechanical, electrical, plumbing, and fire protection engineering firms in the United States.
High-performance buildings; Building envelope and integration; Electrical, HVAC system integration; Smoke control systems; Using BAS for M&V
Pressure piping systems: Designing with ASME; Lab ventilation; Lighting controls; Reduce energy use with VFDs
Smoke control: Designing for proper ventilation; Smart Grid Standard 201P; Commissioning HVAC systems; Boilers and boiler systems
Case Study Database

Case Study Database

Get more exposure for your case study by uploading it to the Consulting-Specifying Engineer case study database, where end-users can identify relevant solutions and explore what the experts are doing to effectively implement a variety of technology and productivity related projects.

These case studies provide examples of how knowledgeable solution providers have used technology, processes and people to create effective and successful implementations in real-world situations. Case studies can be completed by filling out a simple online form where you can outline the project title, abstract, and full story in 1500 words or less; upload photos, videos and a logo.

Click here to visit the Case Study Database and upload your case study.

Protecting standby generators for mission critical facilities; Selecting energy-efficient transformers; Integrating power monitoring systems; Mitigating harmonics in electrical systems
Commissioning electrical systems in mission critical facilities; Anticipating the Smart Grid; Mitigating arc flash hazards in medium-voltage switchgear; Comparing generator sizing software
Integrating BAS, electrical systems; Electrical system flexibility; Hospital electrical distribution; Electrical system grounding
Cannon Design’s blog is a place for the many voices of the firm to share thoughts and news related to current projects...
As brand protection manager for Eaton’s Electrical Sector, Tom Grace oversees counterfeit awareness...
Amara Rozgus is chief editor and content manager of Consulting-Specifier Engineer magazine.
IEEE power industry experts bring their combined experience in the electrical power industry...
Michael Heinsdorf, P.E., LEED AP, CDT is an Engineering Specification Writer at ARCOM MasterSpec.