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Forum Post: Turn off tag validation when configuring objects in Operate?

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I am trying to configure graphics for a rather large system that does not have any tags built for it yet, and every time I place a dynamo with a tag name it takes 20-30 seconds for it to timeout before I can move on to the next tag. In fact this seems to happen unless a tag is running on a controller (or the Pro+/APP).

Is there some way to turn off this tag validation? I seem to recall knowing a way to do it in the past, as do several of my colleagues, but none of us can find it.

Using DeltaV 12.3.1, and the "frsModules_Theme" dynamos pre-packaged with DeltaV. Also note that this is not referring to Run Mode or using the [_NOT_CONFIG_OK_] flag.

Thanks


Blog Post: 8월, 한국 에머슨 퀴즈 이벤트!

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​ 한국 에머슨의 8월 퀴즈 이벤트 정답 힌트는, 여기에서 확인하세요. 1151에서 3051로 Rosemount 압력 트랜스미터 업그레이드

Forum Post: RE: Is it possible to write an expression to read the USERNAME in ACT block

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Hi everybody,

I´ve used this "user lock" in one place.

It was to disable the "disable horn" button, it is quite easy to do it and prevents the operators to turn of the horn and not have to listen to alarm signals.

One thing II noticed it was that when I logged into the system with better rights, you could have that situation that you could "forget" to re-able the horn, when you

switch to operator as user the Horn-button is disabled and also the horn. The operator can´t change the mode because of the user lock..

You have  to log into the system with better rights and reable the button/horn and then switch back to operator Stick out tongue

Forum Post: RE: historical review

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Do you have the Virtual Controller User Manual? If not, the manual can be accessed on the Ovation Users' Group website.

Configuration help might be better attempted via direct communications. Feel free to contact me and the team directly at ovation-wdpf@emersonprocess.com and we will get some experts to go through your difficulties step-by-step.

Forum Post: Trading silicon for carbon: how to reduce energy usage through automation

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The Energy Efficiency Directive (EED – 2012/27/EU) was adopted on 25 October 2012, repealing the Energy Services Directive (ESD – 2006/32/EC) as well as the Cogeneration Directive (2004/8/EC), and is to be transposed by all Member States (MS) by the beginning of June 2014.

 

The new EED Directive establishes a common framework of measures for the promotion of energy efficiency within the Union in order to ensure the achievement of the Union’s 2020 20 % headline target on energy efficiency and to pave the way for further energy efficiency improvements beyond that date.  Rising fuel prices, increasing regulation, and aging equipment have made energy conservation a key area of focus for process industries.  Automation can help significantly lower energy costs for almost any kind of industrial process in two areas: by reducing process energy demand, and reducing supply costs.

 

The Energy Efficiency Directive reminded me of a good article from Doug White, “Trading Silicon for Carbon: how to reduce energy usage through automation”.  Doug indicates the average plant can conservatively achieve 15% energy savings through this technology.

 

“…Advanced control and real-time optimization of process can yield significant savings.  Improving basic control loop performance can have very high payback.  Maximizing heat and steam recovery, minimizing pressure drop, and minimizing waste and recycle are all target areas for automation.  Improved control of the steam boilers, power turbines, and plant steam system are also likely high-priority areas.”

 

Read the full article by Doug White and published in Hydrocarbon Processing magazine here. 

 (Please visit the site to view this file)

How are you reducing energy usage at your plant?

Blog Post: Vortex Flow Measurement for Gas, Liquid and Steam Applications

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When it comes to measuring flow, you have many choices among technologies. For gas, liquid, and steam flow metering applications, vortex technology is an option.

If you’re unfamiliar with how Vortex flow meters work, Wikipedia describes it:

Another method of flow measurement involves placing a bluff body (called a shedder bar) in the path of the fluid. As the fluid passes this bar, disturbances in the flow called vortices are created. The vortices trail behind the cylinder, alternatively from each side of the bluff body. This vortex trail is called the Von Kármán vortex street after von Kármán’s 1912 mathematical description of the phenomenon. The frequency at which these vortices alternate sides is essentially proportional to the flow rate of the fluid. Inside, atop, or downstream of the shedder bar is a sensor for measuring the frequency of the vortex shedding. This sensor is often a piezoelectric crystal, which produces a small, but measurable, voltage pulse every time a vortex is created. Since the frequency of such a voltage pulse is also proportional to the fluid velocity, a volumetric flow rate is calculated using the cross sectional area of the flow meter. The frequency is measured and the flow rate is calculated by the flowmeter electronics using the equation f=SV/L where f is the frequency of the vortices, L the characteristic length of the bluff body, V is the velocity of the flow over the bluff body, and S is the Strouhal number, which is essentially a constant for a given body shape within its operating limits.

Robert Zaun Marketing Director

Robert Zaun
Marketing Director

In this short 2:53 YouTube video, The Rosemount 8600 Utility Vortex, Emerson’s Robert Zaun explains how the Rosemount 8600 Utility Vortex flowmeter is optimized for general purpose gas, liquid, and steam flowmetering applications—where the fluids need to be homogeneous and single-phase.

He opens highlighted some of the strengths in vortex flow measurement technology such as no moving parts, excellent rangeability (“the ratio of the maximum full scale range to the minimum full scale range of the flowmeter”) and a 30-to-1 turndown ratio.

To address noise at low flow rates, Robert describes adaptive digital signal processing (ADSP) to help extend the rangeability of the meters and along with using a mass-balanced sensor, minimize the impact of vibration in the process.

He also highlighted the flow simulation capability which simulates the vortex signal coming from the process to verify correct operation of the transmitter. This provides in-situ verification which means the meter does not have to be removed from the line to verify that the electronics in the transmitter are working properly.

You can connect and interact with other flow measurement peers in the Flow track of the Emerson Exchange 365 community.

Related Posts:

Forum Post: RE: Changing Faceplate SP button range

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This is indeed the code I copied from the existing button and made some changes.

pn_decpt is declared elsewhere in the code

I have tried long, single, double, integer, variant as the object types for the Range variable and still get error 13, type mismatch. Float is not an option.

Forum Post: Closing "Stale" OPC Client Connections

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Anyone,

We're making connections to the OPC server from a third-party client.  After the connection is no longer needed, the client disconnects.  However, when we check diagnostics/OPC subsystem, we're seeing a connection still showing up.  Additionally, when the software creates another connection, both show up.  This appears to continue ad infinitum.  Can anyone tell me how to trigger DeltaV to close the connection on it's end to kill the stale client connections?

Thank you in advance,

James


Forum Post: Reliable or not?

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Reliable or not?

Hi,

this maybe slightly off topic but it would be nice to have a conversation about the issue.

It´s really good that you can buy equipment that will function 10 years with minimum maintenance.

But the reality might be some different.

In the current/past economical pressure days, the only thing that matters is the price.

(Personally I have been earlier sitting 15 years on the other side of the table)

Can you get an e.g. transmitter for half the price that is probably what the buyer will buy.

 It doesn´t make any difference if the transmitter will break after 1 year, the books are already closed

for the past year.

 

I will give you a real life example.

I just to work for a company that makes machinery for the cable industry.

We were the number one in the world.

I worked for the reel handling department (pay-off, take-up:s and similar equipment)

We manufactured these "superior" quality machines compared to the Chinese copies.

If you compare the price it was e.g. ours 100k€ the Chinese 60k€ (or cheaper).

Our machines were optimized to function with our line control systems and function 24/7 without any problems.

Still the customer (mostly in the far/near east) insisted the buy these cheap copies..?

I had some conversation with the customers  maintenance people and our service/sales people from those countries to determine why they would want these machines.

 

The answer was, if the equipment is too reliable then the service department will get fired because they have nothing to do...

They bought cheap machines which gearboxes that lasted for 1/2 year and had to be replaced.

Nobody calculated that if you stop the HV cable machine, you will spend two days starting it up and cleaning the line.

Usually the value of the cable can be in M€ so you would think by "saving" 40k€ you will end up losing money?

Heard a funny story from my colleague that occurred in the Middle East.

He was  starting up a big chemical plant, everything was working fine except for sometimes.

When he stared to investigate the problem he came up that every time the factory management visited the

control room the operators switched all controls to manual. This was to give the impression that the operators have to work really hard to get the plant running (nobody gets fired).

After the management left they switched everything back to auto and no problems or alarms..

 Yes

 

 

 

 

 

Forum Post: RE: Closing "Stale" OPC Client Connections

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I've had this before and unfortunately it is not something deltav can do from its end.  The OPC client has to be better written to terminate the call to the OPC server, otherwise you need to use a persistent link from the client.

Sent from my Windows Phone

[collapse] From: James Henry
Sent: ‎19/‎08/‎2014 18:18
To: DeltaV@community.emerson.com
Subject: [EE365 DeltaV Track] Closing "Stale" OPC Client Connections

Anyone,

We're making connections to the OPC server from a third-party client.  After the connection is no longer needed, the client disconnects.  However, when we check diagnostics/OPC subsystem, we're seeing a connection still showing up.  Additionally, when the software creates another connection, both show up.  This appears to continue ad infinitum.  Can anyone tell me how to trigger DeltaV to close the connection on it's end to kill the stale client connections?

Thank you in advance,

James

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Forum Post: RE: PID Faceplate doesn't show floating point numbers

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A reinstall of Windows and DeltaV solved my problem. I selected Unites States where Windows asked for format. Problem solved, thanks all.

Forum Post: FF AO in Out of Service and PID in IMAN

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Dear forum members,

Please share if you had a similar experience with an FFAO block not accepting CAS mode.

We had an issue with one of the Flow loops where the PID drives the FF AO block (a fieldbus actuator from Rexa, XPAC Actuator). The FF AO block at the output of PID should be in CAS mode to work properly, however it is not accepting CAS mode and shows up OUT OF SERVICE MODE. This issue has begun after the potentiometer on this actuator has been replaced with a similar POT due to maintenance. This valve has a local control where we are able to stroke it properly from Rexa control unit. Also, we are able to stroke it with a hand help communicator locally. However, we are not able to control it from the DV. What could be the probable cause for this behaviour?

Any suggestions and discussion is greatly appreciated!

Thanks,

Forum Post: Content Based Analysis during PAS modernization

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Are there any examples of where analytics were applied to a legacy PAS configuration prior to modernization?  Specifically, was the legacy configuration migrated via bruteforce or was an effort made to understand the content of the configuration?  Were similar loops identified? Were custom loops identified?  I am seeking input as to what analysis steps are taken to translate a legacy configuration to DeltaV.

Forum Post: Featured chemical workshops at 2014 Emerson Exchange

Forum Post: Content Based Analysis during PAS modernization

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Are there any examples of where analytics were applied to a legacy PAS configuration prior to modernization?  Specifically, was the legacy configuration migrated via bruteforce or was an effort made to understand the content of the configuration?  Were similar loops identified? Were custom loops identified?  I am seeking input as to what analysis steps are taken to translate a legacy configuration to DeltaV.


Forum Post: Content Based Analysis during PAS modernization

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Are there any examples of where analytics were applied to a legacy PAS configuration prior to modernization?  Specifically, was the legacy configuration migrated via bruteforce or was an effort made to understand the content of the configuration?  Were similar loops identified? Were custom loops identified?  I am seeking input as to what analysis steps are taken to translate a legacy configuration to DeltaV.

Forum Post: Content Based Analysis during PAS modernization

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Are there any examples of where analytics were applied to a legacy PAS configuration prior to modernization?  Specifically, was the legacy configuration migrated via bruteforce or was an effort made to understand the content of the configuration?  Were similar loops identified? Were custom loops identified?  I am seeking input as to what analysis steps are taken to translate a legacy configuration to DeltaV.

Forum Post: RE: Opening 7 different Faceplates from 1 Dynamo

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Ashish,

I believe that I having the same issue as you were but am not able to follow your resolution. You were able to download a template from a website and then import it to your system? I am having trouble finding the website. Thanks in advance.

Forum Post: Content Based Analysis during PAS Modernization

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Are there any examples of where analytics were applied to a legacy PAS configuration prior to modernization?  Specifically, was the legacy configuration migrated via bruteforce or was an effort made to understand the content of the configuration?  Were similar loops identified? Were custom loops identified?  I am seeking input as to what analysis steps are taken to translate a legacy configuration to DeltaV.

Forum Post: Content Based Analysis during PAS modernization

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Are there any examples of where analytics were applied to a legacy PAS configuration prior to modernization?  Specifically, was the legacy configuration migrated via bruteforce or was an effort made to understand the content of the configuration?  Were similar loops identified? Were custom loops identified?  I am seeking input as to what analysis steps are taken to translate a legacy configuration to DeltaV.

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