OptoNews Tip: PID loop with a long dead loop time

Posted by Jean Femia on Sep 28, 2016 4:24:57 PM

OptoForum member tohox recently posted a question about using PID control loops on a SNAP-PAC-R1 rack-mounted controller.

The issue? A really long dead loop time. 

"The time delta between the moment the strategy opens a given loop's valve [and] starts the pump+furnace and the moment a temperature increase is measured can sometimes be on the order of an hour," tohox notes.

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Topics: Energy management, Tips, optonews, PACs, I/O, Building management, Modbus, PID loop control, OptoNews 2016-09-28

OptoNews: Case study - Keeping supercomputers cool

Posted by Jean Femia on Jul 6, 2016 4:31:58 PM

Getting Useful Data from Big Data

At the San Diego Supercomputer Center (SDSC), researchers analyze mountains of data from widely differing fields, including:

  • Supersonic aircraft
  • The human brain
  • Distant stars

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Topics: Energy management, Case studies, optonews, PACs, Integrators, Building management, Modbus, OptoNews 2016-07-06

OptoNews: Case study: M-Bus building systems data

Posted by Jean Femia on Nov 18, 2015 5:26:07 PM

How do you get a variety of building systems and machinery to communicate with a central system controller, when they use different protocols? 

Swedish system integrator Processcomponent AB had to solve this problem when they installed an energy monitoring system in a large apartment building in Gothenburg. 

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Topics: Energy management, Case studies, Remote monitoring, optonews, Integrators, Building management, Modbus, OptoNews 2015-11-18, M-Bus

OptoNews: New Modbus Integration Kit for Ethernet and serial

Posted by Jean Femia on Oct 7, 2015 2:49:06 PM

Whether your Modbus equipment uses Serial RTU, Serial ASCII, or Modbus/TCP protocol, our latest Modbus Integration Kit has you covered. 

The kit makes it easier to integrate your Modbus equipment with SNAP PAC controllers running PAC Control strategies. 

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Topics: optonews, PACs, New products, Integrators, PAC Project, OptoNews 2015-10-07, Modbus

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