Forgot to mention.... There must eb autologon for "Visitor" upon log-off. Visitor should have access th these specific parameters in the controller. Evenif the log-off event is not recorded, the "Visitor" login event will be surely recorded in the module.
Regards,
Amod.
Hi Sabrina,
Toolbar that I mentioned is not the one that you get in configuration mode, but the .grf file that opens as toolbar for interface in run mode.
Generally, "Toolbar, main picture & alarm banner" are the foreground objects in the operate interface when you go to Run mode. "Usersettings, custom schedules, & Global files" are run in the background. The error must be within the code in one of these files used.
The Steps I mention are more like guidelines to debug the VBA script. If you are not familier with the VBA code, then do not venture into debugging the code yourself. Find somebody (Like Emerson support center, or local Emerson FSO) to do this for you. You may need to provide the actual files to perform the checks. It will be quick fix if the system access is provided.
With this forum & short descriptions possible in questions, it will be very difficult & lengthy to provide exact solution.... Sorry for that!
Best Regards,
Amod.
Over the next few weeks leading up to Emerson Exchange, we’ll be sharing a series of Q &A’s with our refining consultants on their areas of expertise. The first in our series is a discussion with Gary Hawkins and me on the topic of tight oil.
1. What are the major trends impacting tight oil refining today?
Tight oil production has been increasing significantly in the United States over the last few years, with additional production expected in the near future. As of today, crude oil cannot be exported from the U.S. due to laws; this means U.S. refiners will need to process a higher percentage of tight oil over the next few years.
2. What are the major challenges to refining tight oil?
Some of the major challenges are related to tight crude oil being composed primarily of lighter hydrocarbons (a higher API gravity) than conventional crudes requiring blending with other crude oils to get the right properties for the design conditions of the refinery processes. Tight oil tends to have compatibility issues when blended with other crude oils resulting in accelerated fouling in crude unit heat exchangers from asphaltene precipitation. Asphaltenes do not dissolve in crude oil but exist as a colloidal suspension. The percentage of tight oil blended with other crude oils can make a difference whether the resultant blend is a stable crude oil or an instable blend that is prone to increased rates of asphaltene precipitation. Refiners need to learn what crudes can be successfully blended with tight oil, and in what proportions to mitigate accelerated fouling conditions within crude unit heat exchangers.
In addition, these tight oils have paraffin waxes and high filterable solids that can foul heat exchangers prior to desalting, and these heat exchangers are typically not monitored online. Finally, tight oil has affected yields and quality of products initially, but catalyst manufacturers are quickly making adjustments to realign catalyst formulae for improved performance for tight oil.
3. What are the largest opportunities involving tight oil today?
The relatively low price makes it attractive to process for higher profit margins, once the challenges with instability, filterable solids, and processing a blended feed that is consistent with the capabilities of the refinery are sorted out.
4. How can refiners get ahead of the challenges and take advantage of these opportunities?
Refiners need to change their method of monitoring fouling in the crude unit heat exchangers. In the past, fouling was relatively predictable and an offline spreadsheet was adequate. With tight oils that have higher probability of crude incompatibilities, a refiner needs to have online monitoring and analysis capability for crude unit heat exchangers. When the rate of fouling increases, the crude unit process engineer and operations manager can be alerted to change operating conditions (blend percentage) to mitigate the accelerated fouling.
Be sure to attend my presentation, Automation Solutions for Processing Light Tight Oil (Session 3-2053), at the upcoming Emerson Exchange in Orlando on Tues., Oct. 7, at 9:00 am and 2:00 pm.
Gary will be presenting the following sessions:
Also don’t miss this year’s Refining and Petrochemical Industry Forum on Monday, October 6th at 2:30 pm, and the Refining Industry Mixer Monday evening from 8-10pm.
There are various built-in ways for the DeltaV PID block to mitigate integral wind-up, so I question whether you need to develop a strategy to "activate" it dynamically at run-time. The PID algorithm can detect and properly handle the situation if set up properly.
The following BOL article describes how proper initialization setup can ensure integral wind-up is nullified (PID function block advanced topics):
www3.emersonprocess.com/.../c_pid_function_block_advanced_topics.html
Look into use of the ARW_HI_LIM and ARW_LO_LIM parameters which cut reset when output becomes limited (PID function block parameters) :
www3.emersonprocess.com/.../r_pid_function_block_parameters.html
Then look into the FRSI add-on option for Dynamic Reset Limit (FRSI add-on options):
I recall this issue being described in the following KBA (AP-0400-0013):
www3.emersonprocess.com/.../carticle.asp
You essentially need to setup a Reverse lookup zone in DNS configuration for the DeltaV domain. The article is specifically regarding a PI or Legacy historian, but may be a good starting point even if you are using Emerson Continuous Historian.
Hi Youssef,
The firmware is 6.3.2.3361, so it is below the mentioned firmware. Does this mean I need to apply this fix or is this something that only applies to controllers with firmware revision above 6.3.4?
I am still waiting on getting telnet logs the issue I have now is that I am no longer onsite so am having to relay the information on and await their response.
Adrian,
The IO integrity was shown Good in DV Diagnostics when I checked this last week and there are four carriers attached to this controller. The 2-wide was replaced last week with the controller.
Thanks for your help.
By Mary Krauss, Marketing Manager, Appleton Group
Appleton Electric Company was established in Chicago in 1903, manufacturing products to serve the needs of the city’s rapidly growing electrification infrastructure. Steiner Electric was founded in 1916, also in Chicago, to distribute electrical and lighting supplies. It was only natural that the two companies would form a close alliance from the beginning. In fact, Appleton Group’s current ERP system shows a starting date of 1922 for the Steiner Electric account.
That means we’ve been in a mutually beneficial business relationship for almost a century – a record of success that calls for celebration. For the past eight years, we’ve honored Steiner’s loyalty to Appleton through many generations with an annual awards ceremony recognizing the top Steiner salespeople for the Appleton, O-Z/Gedney and SolaHD brands.
This year’s celebration was held August 22, 2014 at a special lunch hosted by Steiner Electric for the Appleton Group team at our headquarters in Rosemont, Illinois. The main course of barbecued pork and brisket was catered by Smoque, a world renowned Chicago barbeque restaurant, while Appleton Group provided beverages and dessert.
Steiner Electric hosted the award ceremony luncheon with barbecued pork, brisket and all the trimmings catered by Smoque.
As the highight of the program, we presented three awards in honor of the top performing salespeople over the previous year:
Although we wanted to highlight the achievements of these three standout employees, everyone in attendance has contributed to the ongoing success of our relationship with Steiner.
Of particular note, Henry Friedman has been the face of Appleton Group at Steiner Electric for about 20 years. All of us at Appleton Group recognize Henry’s daily, tireless efforts to support the Steiner Electric sales team, and we’re confident everyone he works with at Steiner is proud to have Henry as a dedicated advocate and sales champion.
Pictured L-R: Maria Garcia (Appleton Group), Henry Friedman (Appleton Group), Kevin Feeney (Steiner), Shirley Montalvo (Appleton Group)
All of us at Appleton Group would also like to thank President and COO, Rick Kerman and the entire Steiner organization for a great lunch and a great networking opportunity for the Appleton Group team and our Steiner Electric partners. In their speeches, both Rick and Andy Schwegel, Vice President and General Manager of SolaHD and Heating Cable Systems, recognized the generations of people in both organizations who have worked together over the years.
Pictured L-R: John Anderson (Steiner), Tom Ryan (Steiner), Henry Friedman (Appleton Group), Rick Kerman (Owner of Steiner), Kevin Feeney (Steiner), Mark Schardt (Steiner), Andy Schwegel (Appleton Group), Kris Cervantes (Steiner), Tom Pankratz (Appleton Group), Kerry Nedic (Appleton Group), Joe Wilson (Appleton Group)
Now, as we approach the beginning of our second century working together, we hope to sustain our close relationship – providing continued opportunities for future generations of Appleton Group and Steiner Electric employees while delivering the safest, most dependable electrical products available.
I received an email with this question about which I'm hoping y'all can share some wisdom:
I am trying to start a fan when a compressor is started, but leave it in the operators control. I used an input parameter to trigger a positive edge trigger to a Calc block. My expression is as follows:
IF IN1 = I THEN;
'^/DC1/MODE.TARGET' := AUTO;
'^/DC1/SP_D.CV' := START;
ENDIF
All it does is turn my motor off if it is running, does not start it if it not running. I know this will work, but is there a better approach? And want is the proper SP parameter to manipulate from an expression to start the motor?
Effectively controlling the drum level in an industrial boiler helps to maximize overall energy efficiency. When the drum level varies it can not only impact boiler efficiency, but overall reliability due to unplanned shutdowns.
Mark Coughran
Process Control Consultant
The drum level on this boiler has alarms at +4 and -4 inches of water. It will shut off the fuel on -6 inches of water. The preferred setpoint (SP) for efficiency is 0 inches of water.
However, due to a large cycle on the drum level process variable (PV), the operators preferred to raise the setpoint and live with frequent high PV alarms.
Mark used the EnTech Toolkit, which showed that the boiler level process had an unusually sluggish response to changes in feedwater flow. The sluggish process response is not amenable to auto-tuning algorithms, trial-and-error, or shortcut tuning methods.
He noted that it is also difficult to control with a conventional proportional+integral (PI) controller; however, using derivative action (PID) can be tricky and is avoided by most people.
For these types of control issues, Mark and the Control Performance consultants recommend Lambda tuning. This tuning method provides a direct and systematic way to solve this type of problem.
Installing the Lambda tuning PID parameters immediately stopped the cycle. The operators were very pleased and have already begun experimenting with lower setpoints. The as-left data includes some firing rate changes, which are load disturbances to the drum level.
If you’re unfamiliar with Lambda tuning, see a paper Mark wrote, Lambda Tuning — the Universal Method for PID Controllers in Process Control.
You can also connect and interact with other variability and control performance experts in the DeltaV and Ovation tracks of the Emerson Exchange 365 community.
Dear All,
There is a requirement of one of our customers where there is a temperature controller (TC1) whose PV will never cross 305 degrees but the remote SP it gets is 307 degrees.
This is because there is another upstream temperature controller (TC2) which makes sure that the PV dosent cross 305 degrees for the downstram controller TC1.
Now, my issue is that i need to take care of Anti reset Windup in my TC1. There fore i have asked my customer to provide me with the actual process conditions C1 when i can "ACTIVATE" the Anti Reset Windup and not calculate the error in my PID any more.
I want to ask you guys for help in how i can achieve this "ACTIVATION" of Anti Reset Windup in our DeltaV PID?
**** My solution to the above problem was that during the process condition C1 where we need to "ACTIVATE" the anti reset windup i will "BYPASS" the PID through logic and the turn off the BYPASS when the condition C1 becomes false. This was the PID will not calculate anymore during C1 = TRUE. ****
But my customer dosent like this solution. Please Advice.
Thanks in advance guys,
Chitti
Thank you to everyone who has weighed in on this! I look forward to seeing you if you'll be joining us at the Emerson Exchange conference in Orlando in a few weeks.
I've shared the thread with the requester and suggested he join the community and this track so he can respond with what's worked best for him.
Thanks all for the comments!
Chemical Processing reports in an recent article about a new tool from the Center for Operator Performance and University of Texas at Austin. The tool works like an early warning system for process upsets.
In field testing, it recognized a multistage compressor surge event hours before the event occurred. "The tool now is being tested on distillation tower flooding, fired heater (furnace) operation and flaring. These tests should be completed before the COP’s November meeting."
"The tool beat by more than 90% the average detection time in the Tennessee Eastman Challenge Process, which is a realistic simulation of a chemical process."
“Being able to detect and visualize faults before they occur is very important. The methods being worked on by the COP are very promising. We look forward to testing these techniques on a wide range of applications,” comments Mark Nixon of Emerson.
Emerson Process Management is a control system vendor member in the Center for Operator Performance. COP is a diverse group of industry, vendor, and academia representatives addressing human capabilities and limitations with research, collaboration, and human factors engineering.
As the DeltaV Product Marketing Manager for Operations, I'm proud to report Emerson makes the process industry safer and better for the environment through it's participation in COP. For more information visit www.operatorperformance.org.
Topic: Trellis Error: Unexpected error during login. Authentication Unsuccessful.
TrellisPlatform: Linux/ Windows R3.2
ProblemDescription: Any attempt to login to Trellis UI gets an error. All users - internal or external accounts - are unable to login.
Possiblecauses:
C:\u01\fm\11.1.1.7\asinst_1\bin>opmnctl.bat status
Processes in Instance: asinst_1
---------------------------------+--------------------+---------+---------
ias-component | process-type | pid | status
---------------------------------+--------------------+---------+---------
ovd1 | OVD | 5896 | Init
oid1 | oidldapd | N/A | Down
oid1 | oidldapd | N/A | Down
oid1 | oidmon | 4884 | Init
EMAGENT | EMAGENT | 6156 | Alive
C:\u01\fm\11.1.1.7\asinst_1\bin>opmnctl.bat status
Processes in Instance: asinst_1
---------------------------------+--------------------+---------+---------
ias-component | process-type | pid | status
---------------------------------+--------------------+---------+---------
ohs1 | OHS | N/A | Down
ovd1 | OVD | N/A | Down
oid1 | oidldapd | N/A | Down
oid1 | oidldapd | N/A | Down
oid1 | oidmon | N/A | Down
EMAGENT | EMAGENT | N/A | Down
Resolution/ Workaround:
C:\u01\fm\11.1.1.7\asinst_1\bin>opmnctl.bat stopall
C:\u01\fm\11.1.1.7\asinst_1\bin>opmnctl.bat startall
C:\u01\fm\11.1.1.7\asinst_1\bin>opmnctl.bat status
Processes in Instance: asinst_1
---------------------------------+--------------------+---------+---------
ias-component | process-type | pid | status
---------------------------------+--------------------+---------+---------
ohs1 | OHS | 6828 | Alive
ovd1 | OVD | 7084 | Alive
oid1 | oidldapd | 2568 | Alive
oid1 | oidldapd | 3548 | Alive
oid1 | oidmon | 4652 | Alive
EMAGENT | EMAGENT | 3000 | Alive
[oracle@sun-redback /home/oracle]
$ /u02/domains/IDMDomain/idm.stopall.sh
$ /u02/domains/IDMDomain/idm.startall.sh
$ /u02/domains/IDMDomain/idm.status.sh
Processes in Instance: asinst_1
---------------------+-----------------+--------+--------+------------------------------
ias-component | process-type | pid | status | ports
---------------------+-----------------+--------+--------+------------------------------
ohs1 | OHS | 15775 | Alive | https:6015,https:6017,
http:6016
ovd1 | OVD | 15774 | Alive | ldaps:7023,https:7022,
ldap:7024
oid1 | oidldapd | 15846 | Alive | N/A
oid1 | oidldapd | 15830 | Alive | N/A
oid1 | oidmon | 15773 | Alive | LDAPS:7027,LDAP:7026
EMAGENT | EMAGENT | 15772 | Alive | N/A
Remarks:
Charkkrit Wattananusit
AT&T and eft received 350 surveys from supply chain and transportation companies and found that "Organizations are becoming more sophisticated in their visibility requirements, looking beyond location checks for near real-time information on temperature, security, vibration and other environmental conditions that are critical to maintaining the quality of goods from departure to destination." Does anyone have an example of using the "Internet of Things" at their facility? Either in process control or with an MES? What challenges were encountered during implementation? What were the business results?
Hi,
Quick update on this matter... I have managed to get the telnet event logs from the Controller and they aren't giving too much away. They just seem to show the controller being recovered following the reset.
The following messages are displayed when the fault occurs:
"Controller Bootup Starting"
"Comission Data: V=0x434f4d35 PE=1 PA=10.4.0.10 SUB=255.254.0.0"
"Processing DEVICE DownloadRequest Success"
"Processing END DEVICE Download Request"
"END DEVICE - processing complete"
"INFO: Requesting a Cold Restart Memory Update"
"INFO: Successfully Completed a Cold Restart Memory Update"
Then the messages are again repeated a few hours/days later when the fault re-occurs.
Thanks,
Sean
What benefit is there of having a master and a back-up? At this moment we have only the master, and it is the Application station.
Hi there,
May you please contact Technical Support Hotline 888-793-8763 so we can open a support request for this?
Thanks,
Kaye Mucio
What benefit is there of having a master and a back-up? At this moment we have only the master, and it is the Application station.
Trellis Platform: R3 Linux/ Windows
Topic: Trellis Authentication - Error retrieving external groups
Problem Description: TrellisAdministrator added Active Directory and then fully restarted the Trellis Platform (Frontend/ Backend). One the system fully started, any attempt to map an External User Groups get the Error - retrieving external groups.
In adf_server.out on the Frontend server, here are the entries:
<Warning> <oracle.adf.controller.faces.lifecycle.Utils> <BEA-000000> <ADF: Adding the following JSF error message: Error retrieving external groups
com.avocent.trellis.safetynet.TrellisException: Error retrieving external groups
at com.sun.proxy.$Proxy538.getAllExternalUserGroupsByProvider(Unknown Source)
at com.avocent.commonplatform.cps.authorization.ejbservice.group.facade.GroupManagementEJBFacade_djlc56_GroupManagementEJBLocalFacadeImpl.getAllExternalUserGroupsByProvider(Unknown Source)
For this example, the Authentication parameters was incorrectly provided in Trellis UI.
Notice that the Group DN and User DN was dc=ts,dc=emr,dc=local, which was incorrect. The Base DN and Root is in fact dc=ts-emr,dc=local. As a result, the getAllExternalUserGroupsByProvider was unable to retrieve any information and threw an Unknown error. The bottom line the parameters were incorrect.
Resolution and Best Practice:
Charkkrit Wattananusit
