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Problem Statement: SQL Express shows message GDOTOnlineHistory database is exceeding licensed limit. Is there a way to to keep the database size below a specified size and delete any older record? | Solution: Configuration parameter MaxDataBaseSize in GDOTOnlineWebHistorianConfig.txt. Sets a maximum database size. When this size is reached the service will start to delete the oldest data in the database. See Post configuration section in the GDOT installation guide.
However, the database Delete privilege in the Mi... |
Problem Statement: Why does Aspen Plus seem to regress parameter elements that are not specified or excluded in the Data Regression (DRS) input? | Solution: When some elements of a property parameter are regressed using DRS (Data Regression System), the elements that are not regressed default to the values in the databank or specified by the user (i.e. NOT zero). All elements that are excluded or not explicitly specified to be regressed will default to the databa... |
Problem Statement: How to configure an Aspen Cim-IO for OPC interface using the Cim-IO Interface Manager. | Solution: On the Aspen Cim-IO interface server Start the Cim-IO Interface Manager with Administrator privileges [RUN AS ADMINISTRATOR]
Click Create a new one or Add Cim-IO Interface to begin the configuration
On the Welcome screen select the Cim-IO interface to be configured Cim-IO for OPC using the pull down menu and... |
Problem Statement: Aspen ADSA system configuration settings could not be changed as it is greyed out.
How to delete ADSA cache if System settings are greyed out after ADSA server migration? | Solution: This article explains detailed procedure to delete the ADSA cache, in case system configuration in ADSA client config tool is greyed out and cannot be changed.
This is theSolution to address problem editing the system configuration on ADSA client config tool.
First, it is necessary to make sure that Aspen Da... |
Problem Statement: How do I get rid of the following error message SOLID VOLUME MODEL VS0POLY HAS MISSING PARAMETERS: VSPOLY/1ST ELEMENT (DATA SET 1) MISSING FOR COMPONENT GUMARAB in Aspen Plus? | Solution: In order to get rid of the error message, Solid Molar Volume parameters must be defined for calculations to complete for this solid component. The help can be used to search for the definition of any parameters that may be unfamiliar.
To enter the parameter values, go to Properties | Methods | Parameters | P... |
Problem Statement: After attempting to perform an action on an Aspen Unified model (GDOT, Petroleum Scheduler or PIMS) an error message shows up and the model closes suddenly after clicking OK on the message window.
The message says: “Agent Disconnected – Model workspace has been disconnected, please re-open model to ... | Solution: The root cause of this issue if the lack of RAM memory of the Aspen Unified host server. It is necessary to increase the number of processors to a minimum of 4 and the RAM memory to 8 GB is recommended for improving the performance of Aspen Unified functionalities and continue working on models.
Keywords: Asp... |
Problem Statement: 32-bit version: (V8, V9, V10)
Gas Properties Version 1.5.2 - (Wobbe Index, Higher and Lower Heating Values, Dewpoints, Water Content, Cp, Cv)
64-bit version: (V11 and newer)
Gas Properties Version 1.6.0 - (Wobbe Index, Higher and Lower Heating Values, Dewpoints, Water Content, Cp, Cv) | Solution: The attached unit operation extension calculates the Wobbe Index, Higher and Lower Heating Values, Dewpoints, Water Content, Cp, Cv for a selected stream.
HYSYS versions 3.1+ have all the Gasprops properties built in, hence the extension is no longer needed. To add these new properties to a stream, go to the ... |
Problem Statement: Is there any documentation available for Spyro and it's use with PIMS? | Solution: Attached is a copy of the Spyro manual.
Keywords:
References: None |
Problem Statement: Some customers using Aspen's Process Explorer Ad-hoc calculation feature have noticed that not all Aspen Calc functions work successfully in the Ad-hoc formulas. This gives rise to the question, Which functions are supported for use in Ad-hoc calculations? | Solution: The supported functions are the Time-Based Functions, Math Functions, Timestamp Functions and Character Functions.
For example, any of the functions listed in the Time-Based Functions area of the Aspen Calc Help file's On-Demand Calculations section may be used. These are:
TimeShift
RateOfChange
RateOfAv... |
Problem Statement: The Aspen Automation Interface Help file does not contain an example of how to use the WriteAttribute method of the Tag Object (ProcessData) to write to a timestamp field. | Solution: Please download the attached zip file containing a code example.
Keywords:
References: None |
Problem Statement: How many options to model salt water in HYSYS? | Solution: There are different options to model the salt water in HYSYS:
a) OLI or Aspen Properties: The OLI is a rigorous electrolyte package developed by OLI Systems (http://www.olisystems.com/) that can be used to rigorously model oil-water-salt systems. HYSYS features an interface to the OLI property package, but yo... |
Problem Statement: What are the steps to configure the Aspen Production Control Web Server (PCWS) to use HTTPS rather than HTTP? | Solution: A Server Certificate is required to publish a website using a Secure Sockets Layer (SSL). You would either have to purchase such a certificate from a trusted 3rd party (such as Verisign) or use a self-signed certificate and install it on your web server. The PCWS has been tested using self-signed certificates... |
Problem Statement: How to configure OptiRouter project with S3D model. | Solution: Create a new Project Folder and provide it with an appropriate name without using any spaces or special character.
Update OptiPlantS3DProject.config file present in the “C:\Program Files (x86)\AspenTech\Aspen OptiPlant V12.1\S3D” with below information, all separated by comma.
SQL Server Name: In below scree... |
Problem Statement: What is the best way to model the CO2 Capture Process by K2CO3 using Aspen Plus? | Solution: In 2006.5, new Amines property packages for MEA and MDEA with H2S and CO2 were developed and delivered as application examples. These models are being improved, updated, and extended to other amines and solvents. They are posted on the support web site as soon as they are reviewed and ready for public use.
Th... |
Problem Statement: How to connect multiple simulations to ASW? | Solution: In some cases it might be necessary to connect more than one simulation ASW, to do so follow the steps below:
Add the simulations needed to the Organizer using the + button located in the Configuration | Simulations form. These must be added one by one repeating this step.
Notice that the Status of the simu... |
Problem Statement: How to activate the Aspen Properties and/or the Aspen Simulation Workbook tabs in Excel? | Solution: Sometimes, the Aspen Properties and/or the Aspen Simulation Workbook tabs are not displayed in the Excel worksheet. To be able to activate these Add-ins follow the steps below:
Open the Excel Add-In Manager (located in the Aspen Engineering Tools folder) and activate the Aspen Excel Add-ins that you want to u... |
Problem Statement: Setting up and sharing the User Database on Remote SQL Server and Local SQL Server | Solution: The procedure for migrating your Custom Reports will vary based on whether you are using a remote SQL Server or a local SQL Server. In the attached PDF file, you will find the step-by-step procedure for:
Setting up User Database (Icarus_User120) on Remote SQL Server
Sharing Icarus_User120 Database Attached to... |
Problem Statement: How to import Custom Reports from Microsoft Access Database to SQL Server Database? | Solution: In the Economics Suite v11, it’s still possible to choose between the New Reporter (SQL Server Database) or the Old Reporter (Microsoft Access Database), but in v12 the New reporter is the only one that can be used. In other words, Access databases don’t work with this version anymore, thus any Custom Reports... |
Problem Statement: When adding a compressor a message for an intercooler appears in the Scan Messages window, why? | Solution: When adding a compressor, a message for an intercooler is displayed in the Scan Messages window such as the one below:
Component Item Description: Feed Compressor Unit
User Tag Number: CP-1003
*Component Ref #: 685
INFO > 'GC - 685' ESTIMATED AREA FOR REQUIRED INTERCOOLER
INTERCOOLER 1: 1413.56 SF
This is a... |
Problem Statement: There is an excessive epoxy grout quantity calculated for the compressors in the project. Why is this happening and how can I fix it? | Solution: Epoxy grout quantity is calculated based on the estimated footprint dimensions for the compressor, using a grout height of 6 inches for small pumps (< 500 HP) and a grout height of 12 inches for large pumps and compressors. The footprint dimensions are used as an approximation for the base plate dimensions si... |
Problem Statement: In furnaces, how should I define my process type if this is a mixture? | Solution: The furnaces process type only allows either GAS or LIQUID as the process type, but in some cases, the process type can be a mixture of both. If your process flow has:
More gas and less liquid, then specify a gas process type.
Less gas and more liquid, then specify a liquid process type.
50% gas and 50% liq... |
Problem Statement: The Cv is reducing as the Valve Opening % increases, why? | Solution: In Aspen HYSYS, the valve flow coefficient reduces as the valve opening percentage increases because the Cv shown is the full Cv, not the effective Cv.
The Cv that appears in Rating | Sizing (whether provided by you or calculated by Aspen HYSYS) is the maximum Cv of the valve, indicating the volumetric flow ... |
Problem Statement: Is it possible to convert an Equation Oriented sub-flowsheet back to a conventional flowsheet? | Solution: If a part of your simulation has been converted to an Equation Oriented sub-flowsheet it is not going to be possible to take out those objects from it. However, the EO sub-flowsheet can run in a Sequential Modular mode as a workaround.
In order to do this, go inside of the EO sub-flowsheet and activate the S... |
Problem Statement: It is possible to cause a Bad Value on a variable using DMC3 Builder calculations, this is a useful strategy for testing the behavior of the controller when corrupted data or communication issues happen between the DCS and the RTE controller. | Solution: To simulate the Bad Value on the desired variable you must follow the next procedure:
On DMC3 Builder in Controllers, go to the Calculations tab on the desired controller.
Create an input Calculation.
For this example, we are going to set the Measurement of the CV AI-2020 to Bad Value. The calculation lines... |
Problem Statement: Aspen HYSYS V12.1 Stream Reporter (HSR 1.7.4) | Solution: HYSYS Stream Reporter (HSR) is an Excel spreadsheet utility that allows to import to a spreadsheet the material stream information such as conditions, properties and compositions, and also compare streams from different cases.
HSR can report properties from the following phases: Overall, Vapour, Light and He... |
Problem Statement: Running the Aspen OnLine V11 and up Service as Local System | Solution: The new V11/V12 versions of the AspenTech Engineering suite products runs now on 64-bit computers. Said change allows our software to take advantage of today’s hardware to solve larger models. Aspen OnLine and all its components are now 64-bit programs. The 64-bit versions of simulators delivered in V11/V12 w... |
Problem Statement: Configuring SQLA tags using an Oracle DB connection isn't documented clearly. | Solution: This Knowledge Base article outlines the important configuration details for connecting to an Oracle DB.
On the IP.21 Server, check the Oracle client connection to the relational database:
Start | Programs | Oracle - OraHome92 | Configuration and Migration Tools | Net Configuration Assistant
On the Net Conf... |
Problem Statement: New features for Aspen production record manager with V10,V11,V12 | Solution: Please find the attached Presentation which explains the new features with APRM & APEM application with V10,V11, V12 .
Also find the V12 release notes PDF attached .
Keywords: None
References: None |
Problem Statement: : SLM services may show issues such as not starting or frequently stopping due to incorrect environmental variable. The below article shows the steps to edit the environmental variable to address issues due to incorrect environmental variable. | Solution: : Incorrect environmental variable can cause different errors in SLM services like, “All licenses are currently in use even though there are unused token available in the pool.
If you have followed all the steps from https://esupport.aspentech.com/S_Article?id=000081282, still getting the error, then you may ... |
Problem Statement: It is possible to connect the Lab Sample parameters of an Aspen Inferential Qualities sensor to an OPC interface in order to enter those using a DCS or another human-machine interface different than the Production Control Web Server, or as in this example, InfoPlus.21. | Solution: The parameters for Lab Samples can be found opening the .iqf file using IQconfig in the left column, specifically in Lab Data Collection (LDC) tree.
There are four main parameters that are taken in account each time an operator enters a Lab Sample through the PCWS interface.
NEWLAB (New lab value): Reads the... |
Problem Statement: After upgrading Aspen Calc, the following error is returned when attempting to edit or execute an existing calculation: Failed to edit calculation. Error Getting Calculation Object
All the calculations display with a red circle/slash
If the external task Tsk_CLC1 within the InfoPlus.21 Manager is u... | Solution: After the upgrade, the environment viable ASPEN_CALC_BASE is missing.
TheSolution is to create a system variable named ASPEN_CALC_BASE and set the value to the installed location of Aspen Calc. The default path is: C:\Program Files\AspenTech\Aspen Calc
Reboot the PC or restart the AspenTech Calculator Engin... |
Problem Statement: A deployed IQ application is not collecting data on Aspen Watch. Data collection cannot be started, and its status is “Not supported” | Solution: This message indicates that the current configuration for the IQ application does not support data collection on Aspen Watch.
To enable data collection for IQ application from Aspen Watch please follow the steps below:
Add the AspenIQ node to the Online Connection settings on Aspen Watch. Default port used fo... |
Problem Statement: MSC installation runs into the following pop up error, NobleNet service fail to start.
Cause:
Some specific version of VC++ runtime was corrupted, which is required to running NobleNet service. | Solution: Go to Control Panel|Program & Features, uninstall the following version of VC++ runtime:
Microsoft Visual C++ 2008 Redistributable – x64 xxxxxxxx
Microsoft Visual C++ 2008 Redistributable – x86 xxxxxxxx
Microsoft Visual C++ 2010 Redistributable – x64 xxxxxxxx
Microsoft Visual C++ 2010 Redistributable – x86 xx... |
Problem Statement: How to include the tag name into the node ID for InfoPlus.21 OPC UA Server? | Solution: The NodeIds of tags in InfoPlus.21 OPC UA Server are opaque type. It is a serialized byte stream that is generated on various properties of the tag.
It cannot be easily constructed by merely using the tag name or hierarchy.
Hence it is recommended to use browsepath instead of NodeIds.
The browsepath is the hi... |
Problem Statement: Enabling an application—after it is deployed to an online applications server—to operate in online simulation mode. | Solution: The online simulation mode remains in effect the entire time the application is online, until the application is either removed from the online applications server or redeployed with the online simulation feature disabled.
Online simulation is available only if the application is completed to the Controller ... |
Problem Statement: If a 'Cim-IO for IP.21' interface is created the Test API can be used to validate the setup by doing a Get to retrieve data from the data source (in this case, another Aspen InfoPlus.21 database). If a message like the one below appears, what can be done to fix the problem?
GET successful... | Solution: When doing a Cim-IO Get via the Test API it asks a series of questions. One of the questions is:
Tagname entry options
Keywords: None
References: None |
Problem Statement: After a new installation of the MES Web Server, the aspenONE Process Explorer home URL displays a blank page on all browsers.
This KB provides steps to resolve this error | Solution: First try to access the IIS homepage on the Web Server with the following URL:
http://localhost/iisstart.htm
If the above URL also returns a blank page, most likely the Static Content feature was not installed on the Web Server while installing IIS.
To enable Static Content,
Open Server Manager -> Add role... |
Problem Statement: Customers may face some product issues after installing Windows Updates without following best practices. | Solution: In order to prevent installation errors that may affect Aspentech Software, the user will need to stop all the Aspentech applications and services, before applying Windows updates
Keywords: Windows updates
Aspentech
Software
Patches
Microsoft
MS
References: None |
Problem Statement: This knowledge base article describes how to obtain the locking information for AspenTech licenses on v8 and above when the SLM License Manager has already been installed. | Solution: 1. First search for AspenONE SLM License manager on the start menu:
2. Then Select the Locking Info Option on the top menu:
3. It should display the Locking information window:
4. Click on the Copy to Clipboard button then copy the content to an email or Microsoft Word document. S... |
Problem Statement: When you load an IQ or DMCplus application in the ACO platform, it creates a set of memory-mapped files that are stored on disk and maintained using a directory system called the MPF directory. In some cases, this directory system can get corrupted and may need to be re-built. Some symptoms of this c... | Solution: Procedure to clean and re-create the MPF shared memory for the APC ACO platform (not applicable to the RTE platform):
1. Stop all DMCplus and IQ applications using APCManage
2. Save the CCF or IQF for each of the loaded DMCplus and IQ applications to get the most up-to-date values in their configuration fil... |
Problem Statement: Are there any physical property parameters available for Therminol components? | Solution: Parameters for the following Therminol components are provided for all the Aspen Plus users by Eastman Chemical. These components and parameters have been added to the PURE38 databank in V12.
In the attached file, the data for the following components has been entered and regressed:
Therminol 55
Therminol 59
... |
Problem Statement: After registering an application on the GDOT web viewers, GDOT-Simulation or GDOT-Online, it is not possible to see the trends for MVs or CVs, however, it is possible to see the application connecting correctly to the web viewer.
The following error message can show up related to the variable which ... | Solution: To solve this issue, it is necessary to perform the next procedure:
Go to the SQL Management Studio and in the left column expand Databases and then expand GDOTSimulationHistory or GDOTOnlineHistory database, expand Tables and locate dbo.GDOThistory table.
Right click on the dbo.GDOThistory table and click on... |
Problem Statement: How is the COSMO-SAC model used in Aspen Plus? | Solution: COSMO-SAC is a solvation model that describes the electric fields on the molecular surface of species that are polarizable. It requires a fairly complicated quantum mechanical calculation, but this calculation needs to be done only once for a particular molecule and then the results can be stored. In its fina... |
Problem Statement: This | Solution: provides a sample VBScript calculation that uses information as an array and sends the array to an Aspen Calc formula.
Solution
First create the formula using VBScript, named VbAryInForm. Add an input parameter named arrayParamIn. Use the following sample script:
arrayIn = arrayParamIn.Value
redim arrayOut(u... |
Problem Statement: How to get rid-off the application error about AspenSplash on the event viewer logs when trying to launch APEA or ACCE but with no response from the software? | Solution: When there is an application error about AspenSplash on the system, please try to register the AspenSplash on the machine as following:
1. Run Command line Prompt CMD as admin
2. Under the prompt, run >C:\Program Files (x86)\Common Files\AspenTech Shared\AspenSplash.exe /regserver
Then launch the application ... |
Problem Statement: Why Aspen OnLine V12 services does not appear in Task Manager Services window after installation? | Solution: First you need to check if the interactive service is working. Double-check the installation folder for AOL and see if the following file exist (AOLServiceInteractive3xx.exe).
C:\Program Files\AspenTech\Aspen OnLine V12.0\AOLServiceInteractive380.exe
If the file exists, double-click to launch this .exe - a w... |
Problem Statement: Does Aspen Mtell support TLS 1.2 security protocol? | Solution: Yes, Aspen Mtell supports TLS 1.2 security protocol in versions V12 and later. Instructions for configuring TLS 1.2 can be found in the Aspen Mtell TLS 1.2 Configuration documentation.
Keywords: Transport Layer Security
Certificate
References: None |
Problem Statement: I would like to change the password for the 'Admin' user which was set during initial configuration. | Solution: When security is enabled in Aspen Mtell, the 'Admin' username and the password created during initial configuration are available to be used as a last resort to login to Aspen Mtell if all other users are disabled or otherwise unable to access the application. The 'Admin' user will always be able to access A... |
Problem Statement: How to resolve “libmmd.dll” error messages when installing v12? | Solution: When installing the v12 Engineering Suite, you may experience error messages similar to these.
These errors is stating that the compliers that are used are not being initialized and found by the installer. To resolve this error message, follow these directions. It can be used for Manual or Silent Installatio... |
Problem Statement: You might get the following error when trying to import a data source or link a historian in Aspen Event Analytics: Validation Failed.
When you click on the Validation Failed message, you may see the error message Unexpected load failed exception. | Solution: This error is most likely due to tag names or descriptions with Non-Alphanumeric characters. It can be resolved by manually editing the Tag Names or Tag Descriptions to remove any special characters.
Users can also follow the instructions below to use VBA macros to remove all non-alpha numeric characters fr... |
Problem Statement: How do I restore a SQL database from backup using SQL Server Management Studio (SSMS)? | Solution: You can restore a database from backup to overwrite the one that already exists on your server, or you can restore a fresh instance of the database.
Restoring a database from backup to overwrite the one that already exists
Ensure that all your Aspen Mtell services are stopped and then follow the steps below... |
Problem Statement: How do you create an SLM silent installation? I am unable to record only the SLM tools portion of the installation. | Solution: AspenONE Installer does not support the record XML file option for the SLM Tools. Users who want to setup only the SLM Tools can follow this article to install SLM tools silently.
Please follow the below procedure to perform a SLM Server installation silently:
· Download the attached file Silent_SLM_... |
Problem Statement: The BatchSep block reports the Cumulative pot duty on the Results | Summary tab; however, it is different from the Net duty value on the Results | Pot tab. | Solution: The cumulative pot duty result reported on the Results | Summary sheet of the BatchSep block is the amount of heat added or removed from the reactor.
Cumulative Duty is defined by the following equation:
Cumulative_duty = H_reactor_contents - H_feeds_streams - H_initial
Net Duty is calculated by the equatio... |
Problem Statement: Installation of Microsoft SQL Server Express guide for aspenONE products. | Solution: As part of the aspenONE Suites the user maybe required to install Microsoft SQL Server Express as a prerequisite. AspenTech provides Microsoft SQL Server Express within the 3rd Party Redistributables folder on the aspenONE Media. Attached is a step by step guide to install the software.
Keywords: SQL Server ... |
Problem Statement: GDOT applications can access IP.21 data using OPC DA. Some additional configuration steps are required to enable that communication. Changes are required on both the IP.21 machine and the GDOT machine. This KB explains the procedure | Solution: Prerequisites
Be ready with a list of the userids that will be used to run GDOT applications. These users are referred to as the “GDOT application userids” in the rest of this document.
Changes to the IP.21 machine
You will need an account with Administrator privilege to perform these configuration changes. ... |
Problem Statement: What is the purpose of the Allow partial light ends input checkbox? | Solution: The Allow partial light ends input checkbox can be found on the Light-Ends Handling & Bulk Fitting Options window as shown below. This form is instantiated via the Assay view available in the Aspen HYSYS oil manager.
Activate the Allow Partial Light Ends Input checkbox to achieve a better fit between genera... |
Problem Statement: How can someone modify the correlations used to calculate the properties of the hypo components created by the Oil Manager? | Solution: HYSYS lets you choose from a wide variety of correlations to determine the properties of a generated hypocomponent.
1. Select the Oil Manager option from the Properties Environment Home Ribbon.
2. Select the Correlation SetsTab and Click on Add. Here you can define additional specialized correlat... |
Problem Statement: Customer is able to use the Legacy Add-in with no problem, but when he/she tries to use the MES COM Add-in, Current Value, Historical Value, Historical values, etc., receive an error:
Error: The server has rejected the client credentials
There's no Database security configured on the Aspen Info... | Solution: When the MES COM add-in using Process Data service to communicate with IP.21, it uses WCF that require user to be authenticated on the server. If the client and server are on different networks then there is a problem to authenticate the remote user. Process Explorer and the legacy add-in do not use WCF, ther... |
Problem Statement: After deploying a packaged | Solution: a Developers Community appears that should not be there.
Solution
Review the Definitions for Developer Communities with links to pipeline location/tree node security.
Remove the Developer Communities in Definitions
Remove any security set for Developer Communities in Pipelines.
Repackage theSolution.
Keywo... |
Problem Statement: When configuring the Aspen Mtell database through the Database Wizard, you might get the following error message:
Save Error
There was an error saving the database connection settings to the registry. Requested registry access is not allowed. | Solution: This error shows up when Aspen Mtell is not being run as an administrator. To resolve it follow the steps below.
1. Close the Database Wizard.
2. Right click on either Aspen Mtell System Manager or Aspen Mtell Agent Builder.
3. Select Run as Administrator.
4. Progress through the Database Wizard, then pres... |
Problem Statement: Is it possible to find and move to a block in the sequence of the Control Panel? The sequence is very long, so it is difficult to locate particular blocks. | Solution: Find in Sequence was available in earlier versions of the Control Panel in Aspen Plus; however, this feature was removed in V9. It has now been re-implemented in V12. If you right mouse click in the left hand pane of the Control Panel with the sequence (in a place where there is not a block name), it is poss... |
Problem Statement: How can a fuel cell be modeled in Aspen Plus? | Solution: Attached is a fuel cell example using User2 block with a Fortran subroutine. This example has two product streams to representing the anode and cathode outlet. An example of a fuel cell with only one product stream is given inSolution document 102568.
The User2 model has two feed streams (anode and cathode fe... |
Problem Statement: This example shows how to use BatchOp unit operation under Batch Model in Aspen Plus for the simulation of batch salt | Solution: preparation and buffer tank simulation for continuous process feed. Solution
The saltSolution will need to be prepared as one batch per day to fill up the buffer tank for the continuous process feed.
In this example, the BatchOp model will be used for both a salt DISSOLVE unit operation and a BUFFER tank un... |
Problem Statement: What is dividing wall column?. | Solution: The dividing wall column is a just a Petlyuk column in a single physical column, with the pre-fractionator embedded into the main column. Since the pre-fractionator is physically inside the main column, there will be some heat transfer between it and the main column. The user can model the influence of the he... |
Problem Statement: When simulating oil mixtures, users usually use Assay input to represent the composition. In Simulation environment, distillation curves could be included in stream summary table to report the results of streams that contain Assay type components. However, the default curves only contain limited pred... | Solution: Users are allowed to add additional points to enhance distillation curves. The steps are shown below with D86 curve as the example.
Add a new property-set in Property Sets folder.
Select D86T in Properties tab.
Input new cut points in Qualifiers tab.
In Stream Summary table, add the property set which was c... |
Problem Statement: Example for modeling LNG Exchanger in HYSYS Dynamics | Solution: In this model the two LNG exchangers are modeled in HYSYS Dynamics using the Heat Transfer Co-efficient's and other geometry data generated from the rigorous simulation models using Aspen Plate Fin Exchanger.
Keywords: LNG, dynamics, exchanger
References: None |
Problem Statement: In versions prior to V14, the Aspen Watch Maker Help File documentation on this procedure is not very clear for users so this document will provide a more comprehensive guidance. As part of Documentation Defect 603365, the Help File is targeted to be improved in V14 with the detailed procedure below. | Solution: SQL Procedure for Custom DCS Types
The SQL procedure for a Custom DCS Type is used to manage the different operations related to a PID record. The PID record name is the only argument that is needed for the SQL procedure to perform the supporting logic.
The procedure must perform the following logic:
First, ... |
Problem Statement: A procedure for copying a local security configuration from one local security server to another. | Solution: It is possible to copy the Local Security configuration, including the defined roles and applications, from one local security server to another. This would be helpful in a situation where a second security server is set up for redundancy purposes* or to migrate the server node to new hardware.
With Local Sec... |
Problem Statement: How do I upgrade the SLM Client on application machines? | Solution: AspenTech supports using a newer SLM Client version with machines running older versions of a product. You can standardize on a higher version of the SLM client to simplify the deployment of a patch, or if a higher version of SLM client is needed to use new functionality. The following conditions must be met ... |
Problem Statement: Aspen InfoPlus.21 failed to start at boot. However it can be start normally from Aspen InfoPlus.21 Manager.
One possible explanation could be because some dependent services have not fully started. | Solution: Windows will wait for 120 seconds for all services with startup type “Automatic” to startup completely before starting services with startup type Automatic (Delayed Start). This knowledge based article aim to provide instructions on how to extend or prolong the time taken to start services configured with sta... |
Problem Statement: When working in a DMC3 Builder APC Project for Nonlinear Models, it has been observed that sometimes the data plots in the Model view thumbnail do not all show up. For example in the image below, we are expecting to see 4 data plots (3 inputs, 1 output) but there are only 3 data plots in the thumbnai... | Solution: The root cause of this issue is that the thumbnail view is case sensitive, so unless the name of the vector in the dataset exactly matches the name of the model variable, the plot will not show up. In the example shown above, the reason FIC-2001SP is not appearing is because the vector name in the dataset is ... |
Problem Statement: How do you add a user-defined property to the Global Data shown on the flowsheet for a stream in Aspen Plus? | Solution: Up to six property set properties can be displayed for a stream on the flowsheet in addition to Temperature, Pressure, Molar vapor fraction, Mole flow rate, Mass flow rate, Volume flow rate, and Heat/Work. You can specify the label, property set, variable format, color, and box shape for each property. If the... |
Problem Statement: Why OptiPlant is giving an error message for equipment coordinates every time on opening the line list? | Solution: This error message is appearing because the decimal (.) value in the .LLS and .ELS file is getting replaced with a coma (,) because of OS regional settings. To resolve this issue, open Control Panel and Go to Clock and Region settings
Thereafter, Go to Region settings and open Additional Settings
From the a... |
Problem Statement: How do you create a Hot Link to a URL in the Aspen Process Graphics Editor? | Solution: Open the Aspen Process Graphics Editor and create a new (or open an existing) graphic. Create a Hot Link. Right-click on the Hot Link and go to Properties. In the File: text box, enter the path to Internet Explorer (in double quotes) followed by a space and the URL.
Example: C:\Program Files\Internet Explorer... |
Problem Statement: The IP_DC_MAX_TIME_INT field in an IP_AnalogDef record only works when the record is updated on a regular basis. If the record is updated on an irregular basis, such as values from a CIM-IO IoUnsolDef record, then this field does not always ensure that there is a value every IP_DC_MAX_TIME_INT interv... | Solution: TheSolution is to use an SQLplus script (see attachment) to check the records updated by the CIM-IO IoUnsolDef and to update the record if it has not been updated within the IP_DC_MAX_TIME_INT. This script should be run on a scheduled basis at a frequency of 10 minutes. If you have a large number of IoUnsolDe... |
Problem Statement: This Knowledge Base article provides the answer to the following question: How does IP_DC_MAX_TIME_INT work? The question is often asked when data is not being written to history at the specified time interval. | Solution: The common misconception is that you can configure the tag field IP_DC_MAX_TIME_INT to write data to history after a certain time period. It does do this, HOWEVER, you need to have two data points to compare for IP_DC_MAX_TIME_INT to be effective.
For example, if you have two values, and the second value does... |
Problem Statement: How should you set data compression parameters to record values for a discrete tag (i.e. tags storing integer data like records defined against IP_DiscreteDef) only when the tag changes? | Solution: The following data compression settings will cause values for a discrete tag to be written to history only when the tag changes:
· Set IP_DC_SIGNIFICANCE to 1
· Set IP_DC_MAX_TIME_INT to +000:00:00.0
· Set IP_STEPPED to Stepped
Keywords:
References: None |
Problem Statement: What is the numeric format of the IP_DC_Significance field in the IMS tagset? Is it a percent? | Solution: It is an absolute value based on the IP_Input_Value field. For example if the IP_Input_Value of a tag is 95 (which could represent a percent, a degree, etc), and the IP_DC_Significance is set to 1, then if the next IP_Input_Value is <=94 or >=96, it will bypass compression (i.e. value will be recorded.) The n... |
Problem Statement: As described in knowledge base | Solution: s 103093 and 103491, the field IP_DC_Significance is used in both Ip_AnalogDef and IP_DiscretDef records for controlling Data Compression. It is an ABSOLUTE value. What happens if you set that value to 0.0 ?Solution
It is as if Data Compression is turned off - ALL values will be stored in History.
Keywords: N... |
Problem Statement: Is there anything in AspenWatch to help understand the dynamic disturbance rejection rather than the steady state | Solution: .Solution
Two useful KPIs in the AW history are LSTRBI (TRI) for MVs and LSTRBD (TRD) for CVs. These are the contributions to the dynamic move plan. High values of LSTRBI tells you which MVs are contributing least to the dynamic move plan and high values of LSTRBD tells you which CVs are being controlled most... |
Problem Statement: A customer is seeing the following error in the Batch21Services_AtlServer log file:
(10092) 01/08/2021 17:50:01.632 AtApplicationInterfaceMonitor::DoWork() - Getting the reporting datasource failed - refreshing: E_FAIL
(10092) 01/08/2021 17:50:01.634 AtApplicationInterfaceMonitor::DoWork - refreshin... | Solution: The error message indicates that the reporting datasource name is wrong in the following file…
C:\ProgramData\AspenTech\Production Record Manager\Production Record Manager.Profile.xml
Check the <Reporting> section, correct the datasource name and save the file. The error should disappear after resta... |
Problem Statement: This KB article explains the basic Excel configuration for GDOT Model Update and GDOT Excel Add-In. This configuration is encouraged to assure proper functioning. | Solution: Excel settings are per-user settings, and so need to be set for each user that uses the GDOT Add-in or that is associated with a registered Model Update application in DCOMCNFG).
To change the settings:
First, open Excel to a new, empty workbook, The use the File menu and go to Options.
In the Options dialog,... |
Problem Statement: How can I track the velocity of a fluid in a pipe segment in dynamic mode? | Solution: In steady-state, it is possible to track the velocity profiles of the vapor and liquid phases of a fluid being transported through a pipe segment by going to the Pipe Segment | Performance | Profiles | View Profile… | Table (or Plot) form:
However, once in dynamic mode, the Performance tab of the pipe se... |
Problem Statement: A | Solution: is needed to manage the size and number of MESDXT log files
Solution
Aspen Batch and Event Extractor stores information, debug and error messages in the MESDXT.log file. The maximum size this file can grow to is defined by the maxFileSize parameter in the file C:\Program Files\AspenTech\Batch.21\Server\MESDXT... |
Problem Statement: How do I resolve error Prediction model execution period does not match the application execution period while updating the .iqf file in IQConfig? | Solution: IQR is the runtime file of model file which is generated from a IQM file. To prepare an IQM model file, two sets of data are required. One is the process data & the other is Lab data.
The data frequency of process data is the input data frequency for an .iqm file.
The prediction execution period (P1PERIOD) fo... |
Problem Statement: A Process Simulator File (PSF) file is a text file giving process and properties data, which can be read by both current Exchanger Design and Rating (EDR) programs and heritage HTFS programs, to provide inputs needed by those programs. Process data relates to stream flows and inlet and outlet conditi... | Solution: describes the format and structure of the file.Solution
A process block comprises
201 stream-name
202 stream-number flowrate inlet-X outlet-X blank blank
204 inlet-T outlet T blank blank blank blank
Where:
T refers to temperature
X to quality (vapour mass fraction)
The s... |
Problem Statement: The purpose of Future Trajectories is to configure the future movement of one or more feedforward, or disturbance, variables (DVs) according to any one of the following prediction algorithms: First Order, Ramp, or Piecewise Linear.
In this document, we will show some basics about enable and configur... | Solution: To Enable Future Trajectories, follow the next steps:
1.- On DMC3 Builder go to Options ---> Advanced Options and set Enable Feedforward trajectories to True
2.- On Controller Model go to Model Operations ----> Edit and select Future Trajectories
3.- Edit Required Parameter for the future trajectories on th... |
Problem Statement: During the Gain Update (V11) process after the switch is turned ON, the status does not change from Initializing (INIT) to (RUNNING) but there is no error message visible. | Solution: It is a situation that may occurs on V11. This problem happens because the Microsoft Excel software shows up a “Product Activation Failed” message and an activation message pops-up interrupting the communications between GDOT and Excel. It is required to count with the Microsoft Office license updated and the... |
Problem Statement: A license is required to install CIMIO and start it for the first time. Some CIMIO environments are not connected to a license server. This article provides an unlocked standalone CIMIO license so you can install CIMIO and start it without being connected to a license server. This license will work ... | Solution: This file contains instructions for installing the CIMIO unlocked license file on any machines
Licenses contained in the CIMIO unlocked license file:
CIMIO_BaileysemAPI
CIMIO_Core
CIMIO_Fisher_Chip
CIMIO_Fisher_RNI
CIMIO_FoxAPI
CIMIO_InfoPlus21
CIMIO_Measurex_ODX
CIMIO_OPC
CIMIO_PI
CIMIO_RSLinx
CIMIO_Westing... |
Problem Statement: Sometimes you could face the issue when PIMS model run results are different from AUP run of migrated model which caused by discrepancies in matrix structure. This workflow will help you to investigate. | Solution: Here’s a brief how-to for comparing matrices from PIMS and AUP:
Run PIMS and AUP and locate the “Xlp_new.xlp” files from each run.
Xlp_new.xlp is the pre-solve matrix. AUP and PIMS use the same solver, so it’s likely that differences in the solved state are caused by differences in the pre-solved state.
You c... |
Problem Statement: How is the Dynamic Unbiased Prediction (UAZ) calculated for an IQ with an FIR Model? | Solution: Attached Example: There is an Excel spreadsheet attached with a concrete example that you may find helpful in understanding the mechanism. It is a simple FIR model with input changes and IQ predictions calculated.
How UAZ is Calculated:
The dynamic unbiased prediction is calculated in the following way:
y(t... |
Problem Statement: By default, there is not an entry that can help reset the number of steps counter automatically, but this problem can be a workaround using a custom calculation. This article described the steps to set up this calculation. | Solution: Create an Input Calculation on DMC3 Builder with the follow logic:
if (stepsw=1 and mastersw=0) then
Nstep = 0
end if
where Stepsw is a user entry created for the general variables that will act as “Reset switch”. This user entry will have two states 1 meaning ON and 0 meaning OFF and will be triggerin... |
Problem Statement: This | Solution: explains briefly what happens when in Simulation Environment a Controller shows a Calculation error can only compare two strings, two numbers, or a numeric string and a number.
Solution
If a controller shows this error in the simulation environment is likely that the controller won’t be able to turn on even ... |
Problem Statement: Customer menus are one-click URL access that calls certain or specific pages from any APC applications, for example, the use of one specific History plots for Variable X. instead of going Controller X > Variable X > Open AspenWatch Menu > History Plots.
You can simply locate a custom Menu on the PCWS... | Solution: The Steps to create the Custom Menu are the following:
On PCWS go to Configuration, then Custom Menus, and click Add
This will pop up a new window with some information required.
On application, you can select any (it will do not matter if it is ACO, RTE , IQ, or composite). the page will be added to th... |
Problem Statement: It has been reported that after installation (or V10 patches installation) IQConfig fail to open and return an error “Unexpected error; quitting”. | Solution: This is a reported problem that may occur on V10 (the problem has not been reported or has been reproduced on V11 or V12). To fix the issue simply run the application as administrator. After that try to close IQ config and open the application with any user (it does not require Admin rights after that) this t... |
Problem Statement: How do I create a PSV Excel Datasheet in Aspen HYSYS or Aspen Plus V12? | Solution: Since V11, PSV datasheets are being created using Aspen Basic Engineering (ABE). In V12 there were major changes to the workflow and functionalities. Here are the steps to generate a Datasheet:
In Safety Analysis, go to Safety Datasheets ribbon.
Connect to a Server
For ABE Local Server configuration, choose U... |
Problem Statement: How to enable verbose logging to record issues related to the installation of aspen applications? | Solution: Verbose logging is a type of computer logging method that involves more information than the standard or typical logging process. In software, verbose logging is the practice of recording to a persistent medium as much information as you possibly can about events that occur while the software runs. Typically,... |
Problem Statement: How do I manually provide multiple heat curves in Aspen Heat Exchanger Design & Rating Program under user defined properties using heat loads? | Solution: If user wants to provide user defined properties for multiple heat curves/specified properties using the option set “user specified properties using heat load”. Then this option does not allow to provide multiple heat curves. User can provide only single set of value.
“There isn’t a way to have more than one... |
Problem Statement: How to map Plant Tags to Model Variables in Aspen Simulation Workbook? | Solution: Plant data tags can be mapped to model variables. This allows you to automate workflows and leverage the power of process simulation in the plant operations environment. You can:
Map tags to model variables (e.g., populate model inputs with measured data from the plant).
Map model variables to tags (e.g., sen... |
Problem Statement: What is petroleum BMCI value and how to calculate it within HYSYS simulation environment? | Solution: The petroleum BMCI (Bureau of Mines Correlation Index) is an index used to judge the suitability of heavy feedstock for the production of olefins, often refer to as petrochemical potential. The BMCI is based only on boiling range and density.
BMCI is specified for assay in properties environment, cannot be ... |
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