Blog - Post List

  • Safety Instrumented Systems Blog: Q and A on Digital Valve Controllers and Solenoids in Safety Applications

    Jim Cahill
    A reader emailed some great questions to an earlier post, Clarifications on the Use of the DVC6000 SIS in Safety Applications. The post, featuring the thoughts of Emerson’s Riyaz Ali, addressed misconceptions about the use of digital valve controllers...

  • DeltaV Blog: IEC/ISA Meeting During ISA Automation Week

    Terry Blevins
    IEC accepted the U.S. National Committee’s offer to hold IEC/TC 65, SC 65A, SC 65B, SC 65C and SC 65E meetings during the weeks of 17-21 and 24-28 September 2012 at the Orange County Convention Center, Orlando Florida, USA. Subcommittee meetings are schedules the week before the start of ISA Automation Week. The plenary will … Continue reading » Read the full text.

  • DeltaV Blog: What Can You Find in Our August 2012 Issue?

    Gregory K McMillan
    In our August issue , read " Wireless Comes of Age " and find out why wireless is not just for early adopters anymore. Also, learn to " Flow Like an Egyptian " with Walt Boyes, who covers the basics of flow measurement in open channels and explore virtual instrumentation with the folks at Arkansas Electric Corporation . And our columnists weigh in on high-performance HMI , liquefied petroleum gas problems and smart calibration…

  • DeltaV Blog: Tip #29 – Tricks for control panels

    Gregory K McMillan
    Note: The following tip is from the upcoming book by Greg McMillan and Hunter Vegas titled, 101 Tips for a Successful Automation Career, inspired by the ISA Mentor Program. Tip #29 – Tricks for control panels By Hunter Vegas (Project Management/Execution) Project management is really just risk management, and a large source of risk to [...] Read the full text.

  • DeltaV Blog: Checklist for a Virtual Plant

    Gregory K McMillan
    What is the most effective type of simulation? What is the fidelity needed? How can you automatically increase fidelity? How can you help operators deal with abnormal situations? How can you have a laboratory that behaves like the real plant to learn how the process responds, demonstrate creative control solutions, and quantify the benefits? read more

  • Operations Management Blog: Visualizing and Analyzing Real-Time Batch Data

    Jim Cahill
    As organizations have started to come to terms with the big data sets they have been collecting, they have started to look for strategies and tools to help them make decisions about what products to make and how to make them most efficiently. For highly...

  • DeltaV Blog: Emerson Exchange – Meet the Expert Session

    Terry Blevins
    This year Emerson Exchange will be held October 8-12, 2012 – Hilton Anaheim in Anaheim, California.  A number of meet the expert sessions are scheduled for the last day of the conference, Friday, October 12th . Willy Worjsznis and I will host one meet the expert session in which we will give an overview of … Continue reading » Read the full text.

  • DeltaV Blog: Tip #69 – Add Control Loops to Eliminate Manual Actions and Sequences

    Gregory K McMillan
    Note: The following tip is from the upcoming book by Greg McMillan and Hunter Vegas titled, 101 Tips for a Successful Automation Career, inspired by the ISA Mentor Program. Tip #69 – Add Control Loops to Eliminate Manual Actions and Sequences By Greg McMillan (Technical) I taught a course in process control to junior and [...] Read the full text.

  • DeltaV Blog: Deadband and Resolution Limit Cycle Causes and Fixes

    Gregory K McMillan
    Deadband and resolution cause sustained equal amplitude oscillations called limit cycles that cannot be eliminated by controller tuning. A resolution limit causes limit cycles if there is integrating action at just one point in the control loop either in the process (e.g. level), positioner, or the process controller (e.g. PID). Deadband requires integrating action at 2 or more points in the control loop. The best solution…

  • DeltaV Blog: Virtualization is a Reality at Emerson Exchange

    Bruce Greenwald
    Virtualization hits the big time at this year’s Emerson Global User Exchange in Anaheim, CA, October 8 th to the 12 th . First up are the workshops, covering a variety of topics “all things virtual”: 9-1773 – Virtualization Technology and Virus Detection 3-1760 – SLC and CSV Concepts for System Virtualization 5-1160 – Syncade Virtualization 5-1847 – DeltaV Virtualization – Product…

  • SCADA Blog: Remote Automation Solutions Actively Involved In PwoC

    ZhenningChen
    Remote Automation Solutions (RAS), one business unit under Emerson Process Management, has been actively participating in PwoC since the year before last, for the third year. Together with other business units, RAS brought its best class hardware and software product, capabilities and solutions to all interested attendees and initiated instructive and helpful talks with them during the events. As of today, RAS has…

  • DeltaV Blog: Advanced Control Foundation – Coming Soon

    Terry Blevins
    Many of the advanced control products available in the DeltaV control system can be traced to an advanced control research and development program established within Emerson Process Management in the early 1990s. The ISA book Advanced Control Unleashed – Plant Performance Management for Optimum Benefit, published in 2003, included examples based on advanced control software … Continue reading » Read the full text.

  • DeltaV Blog: Tip #24 – When performing a DCS retrofit, take the time to study the I/O cards

    Gregory K McMillan
    Note: The following tip is from the upcoming book by Greg McMillan and Hunter Vegas titled, 101 Tips for a Successful Automation Career, inspired by the ISA Mentor Program. Tip #24 – When performing a DCS retrofit, take the time to study the I/O cards By Hunter Vegas (System Design) This is a tip I [...] Read the full text.

  • DeltaV Blog: Where do process dynamics come from?

    Gregory K McMillan
    Do you lie awake at night wondering what the source of process dynamics is? Do you wonder why temperature and composition controllers tend to oscillate at low production rates and low levels? Are you perplexed why some controllers need a lambda factor of 2 and other need a lambda factor of 0.02? Do wonder why level controllers can have controller gains of 100 without oscillating? read more

  • SCADA Blog: Remote Automation Solutions (RAS) at World Gas Conference 2012

    ZhenningChen
    The 25th World Gas Conference (WGC) was held in Kuala Lumpur, Malaysia from 4th to 8th June 2012, hosted by PETRONAS. This year’s WGC marked the celebration of the silver jubilee of this important industry gathering. With its theme 'Gas: Sustaining Future Global Growth' , the event aims to establish the pathway to a sustainable energy future. Occupying the whole of the Kuala Lumpur Convention Centre (KLCC), the…

  • DeltaV Blog: Boot Camp for New Employees

    Terry Blevins
    Courses required for an engineering degree are designed to provide the student with a sound technical foundation for work in industry. However, in most cases these courses do not address the terminology and common practices that an engineer must know to design, implement, checkout and commission a process control system. Universities can help bridge this … Continue reading » Read the full text.

  • DeltaV Blog: Updated M-series Traditional I/O Product Data Sheet

    Larry Griffin
    The DeltaV M-series Traditional I/O subsystem is easy to install and maintain. (384KB PDF) Read the full text.

  • DeltaV Blog: Tip #70 – Minimize Dead Time

    Gregory K McMillan
    Note: The following tip is from the upcoming book by Greg McMillan and Hunter Vegas titled, 101 Tips for a Successful Automation Career, inspired by the ISA Mentor Program. Tip #70 – Minimize Dead Time By Greg McMillan (Technical) When I was 4 years old and sitting on my Daddy’s knee, he said, “Son, I [...] Read the full text.

  • DeltaV Blog: Checklist for Loop Analysis by Trend Charts

    Gregory K McMillan
    Humans have an incredible capability to see and analyze patterns. The setup of the data historian and trend chart can either hide or recognize essential patterns. The check list can help you identify the root cause of poor loop performance and a potential solution. Also included is a module to compute load and setpoint response metrics online. read more

  • DeltaV Blog: Permitted and Actual Mode

    Terry Blevins
    The input parameters of are function block are used by the algorithm in conjunction with the state of the function block application to determine if the algorithm can achieve the target mode of operation established for it. The target mode attribute as origianlly defined by ISA50 is the part of the mode parameter that indicates … Continue reading » Read the full text.

  • DeltaV Blog: Tip #9 – The O-ring seal in an on/off actuator can be a decent indicator of its reliability

    Gregory K McMillan
    Note: The following tip is from the upcoming book by Greg McMillan and Hunter Vegas titled, 101 Tips for a Successful Automation Career, inspired by the ISA Mentor Program. Tip #9 – The O-ring seal in an on/off actuator can be a decent indicator of its reliability By Hunter Vegas (Technical) Over the course of [...] Read the full text.

  • DeltaV Blog: Deadtime Dominance does not have to be Deadly

    Gregory K McMillan
    Severely deadtime dominant loops are particularly challenging because a control loop cannot see and start to correct for an unmeasured disturbance until after one deadtime. Complete correction takes at least two deadtimes. Also, such loops are more susceptible to noise since there is not a major process time constant acting as a filter. Many tuning methods breakdown and model based methods are prone to failure. Here is…

  • DeltaV Blog: Dead Time Dominance Does Not Have to Be Deadly

    Gregory K McMillan
    Severely dead-time-dominant loops are particularly challenging because a control loop cannot see and start to correct for an unmeasured disturbance until after one dead time. Complete correction takes at least two dead times. Also, such loops are more susceptible to noise, since there is not a major process time constant acting as a filter. Many tuning methods break down and model-based methods are prone to failure. Here…

  • DeltaV Blog: Updated Native vs. Layered Foundation Fieldbus Whitepaper

    Larry Griffin
    The Native vs. the Layered (Mapped) Approach to FOUNDATION Fieldbus. (213KB PDF) Read the full text.

  • DeltaV Blog: Updated EDDL Technology Whitepaper

    Larry Griffin
    Why Electronic Device Description Language (EDDL) Technology is the Right Choice for Smart Plant Installations. (557KB PDF) Read the full text.

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