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Problem Statement: How to purchase three Sweet Crudes in the ratio of 3:2:1 in Aspen PIMS? | Solution: At times, Refinery Planners / Procurement Committee might want to purchase different crudes in a specific ratio. This can be achieved in Aspen PIMS by following a very simple step of including Table Ratio.
Let us consider Volume Sample Model, where you can purchase three light crudes - Alaskan N Slope (ANS),... |
Problem Statement: How to identify if any of the tanks in an APS Model are breeching minimum / maximum capacity? | Solution: The users can identify the tanks breeching minimum / maximum capacity by the following ways:
Go to “Events” à “Inventory Problems” and see the entire log of tanks:
2. Apart from this, APS will highlight the value above Max (with red dots) and below Min (with green dots) on the tre... |
Problem Statement: Why do I receive Error code 18 after disabling TLS 1.0 and enabling TLS 1.2 settings in APS Application Server? | Solution: You might be receiving Error code 18 after disabling TLS 1.0 and enabling TLS 1.2 settings in your APS Application Server because you may be selecting “SQL Server” while creating the .dsn file.
This is happening while using TLS 1.2 settings because “SQL Server Native client” is supported whereas “SQL Server” ... |
Problem Statement: This video | Solution: outlines how to add a new Cim-IO logical device on the IP.21 server using the application Cim-IO Test API.
Solution
Keywords: None
References: None |
Problem Statement: How can we report the Catalytic Cracker Conversion for a FCCU unit in Aspen PIMS? | Solution: Most of the Refineries consist of a FCCU unit which will be modelled into your PIMS LP structure. Economists / Refiners are usually interested in calculating and reporting the Cat Cracker conversion. There might be different ways to calculate the same, this KB article outlines one of the methods.
• Usual... |
Problem Statement: How to control the Atmospheric Residue to Feed Ratio in a FCC unit in Aspen PIMS? | Solution: Most of the Refiners wish to control the Atmospheric Residue to Feed Ratio in their FCC units to control the Carbon content entering the unit. When too much carbon from the vacuum resid portion of the Atmos Resid enters the Cat regenerator, excessive heat is caused since more Coke is now burnt off. This cond... |
Problem Statement: How to accommodate the batch cycle time and what are the different ways in the Batch reactor? | Solution: For Batch process, aspen plus provides couple of unit operations in order to facilitate batch process environment.
BatchProcess
BatchSep
In the BatchOp, we have multiple ways to specify the Batch cycle. The options will be available in the specifications tab.
Start batch empty.
Batch Charge
Batch feed time... |
Problem Statement: Which AspenTech folders should be given exception for an Antivirus Software? | Solution: We recommend to give exception to all the below folders to allow AspenTech application as Antivirus software can falsely block AspenTech software. Antivirus software scanning AspenTech application can also affect the performance of our application.
Exclude executable files and folders in following AspenTech... |
Problem Statement: Is it possible to model Vinyle Acetate ( VAC) monomer production in Aspen Plus? | Solution: The attached example is a model of a process for the production of vinyl acetate from its raw materials acetic acid and ethylene. The model provides an example of how to model the different areas starting from set of components and physical property parameters.
The model is not intended for equipment design ... |
Problem Statement: What is the difference in between the Evaluation process of Aspen Plus User-Defined Components? | Solution: Aspen Plus provides an option in Components to define the custom (user-defined) components, in order to develop components which were not present in the current available databanks. During this process of creating components, user can find couple of options.
Evaluate using NIST TDE
Estimate using Aspen Proper... |
Problem Statement: What are the differences between Tables UPOOL and VPOOL? | Solution: In our Refinery PIMS model, we might sometimes use the tables UPOOL and VPOOL for creating different types of Pooling structures. This article outlines the different usages of both the tables.
1) Table UPOOL:
LP Modelers generally make use of Table UPOOL to set up a quick User Defined Pooling / Shorthand... |
Problem Statement: How can we blend one Gasoline Blend into another Gasoline Blend in Aspen PIMS? | Solution: In our refinery operations, there are instances where blending one gasoline/diesel blend into another blend (known as cascaded blending) becomes necessary due to real-time factors. This knowledge base article outlines the table setup needed in the Aspen PIMS model. For illustration, consider the following des... |
Problem Statement: How to simulate special baffle (partial baffle or ear baffle) for the vibration analysis in Shell and Tube heat exchanger? | Solution: In Aspen Shell and Tube exchanger rating and design, there is no direct option to select partial baffle or ear baffle. EDR is not capable of these baffles for vibration analysis.
However, as a workaround, we have special inlet nozzle support option available in EDR for vibration analysis as depicted in the f... |
Problem Statement: Detailed description of vulnerability CVE-2023-44487 as advised on the https://nvd.nist.gov/ website:
The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.
Thi... | Solution: CVE-2023-445487, AKA the Rapid Reset vulnerability is described as: The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.
To protect against vulnerability, concerned cu... |
Problem Statement: What is the difference in between Sensitivity Analysis and Design Spec | Solution: Design specifications and sensitivity analyses are various features used in various use cases. They both are part of manipulators in Aspen Plus and they can be available in model palette and navigation pane. Both options can be hidden and displayed on the flowsheet.
Design Specification:
The design specifica... |
Problem Statement: Quick Template to check the Freezing point for the | Solution: s using Sensitivity Analysis in Aspen Plus
Solution
This is a quick template to check the Freezing point for theSolutions using Sensitivity Analysis in Aspen Plus. The temperature point where the liquid changes its phase from liquid to solid at certain pressure (Atmospheric Pressure) is called as Freezing po... |
Problem Statement: What are the process template functions in Aspen HYSYS? | Solution: Process templates functions in Aspen HYSYS are:
Allow for the implementation of sub-flowsheets and template files into a given HYSYS simulation
Can build from a blank sub-flowsheet for modularized construction of a process model
Open template files or import flowsheet files (.hfl) to incorporate other process... |
Problem Statement: What is the LNG Exchanger functions in Aspen HYSYS? | Solution: LNG Exchanger can be used to represent heat transfer between multiple hot and cold streams
Allows for application of different Fluid Packages to the various sides of the exchanger
Overall material and energy balance is assured, but exchanger geometry is not accounted for
Outlet specifications can be specified... |
Problem Statement: What is the piping-specific unit operations available in Aspen Hydraulics? | Solution: The piping-specific unit operations in Aspen Hydraulics are:
- Pipe Segment
- Complex Pipe Segment
- Tee Junction Mixer
- Tee Junction Splitter
- Various Fittings
Keywords: Hydraulics, Piping, Aspen HYSYS
References: None |
Problem Statement: What are the hydrates structures in Aspen HYSYS? | Solution: Structure I Hydrate
Can hold only small gas molecules such as CO2, methane and ethane inside the lattice
Structure II Hydrate
Hold intermediate sized gas molecules such as N2 and O2 as well as hydrocarbons such as propane and iso-butane
Structure H Hydrate
Require two different types of molecules
Large specie... |
Problem Statement: How many approach available for saturating a dry gas with water in Aspen HYSYS? | Solution: There are two approaches:
Manually mixing the dry gas with sufficient water using a Mixer or Balance operation, separating out the excess liquids, then tuning with an Adjust operation
Using the Saturate unit operation extension to automatically saturate the gas stream with water
For the Manual Saturation App... |
Problem Statement: How many column options in Aspen HYSYS? | Solution: In Aspen HYSYS, there are:
Six standard templates:
Distillation Column
Refluxed Absorber
Absorber
Reboiled Absorber
Three phase distillation column
Liquid-liquid extraction
Short Distillation Column
Use for simplified calculation
Customer Column Template
Build a customized Column
Keywords: Column, Distillati... |
Problem Statement: How to get rid of the following error message “Please insert the desk: 1” while installing the ENG package? | Solution: Please insert the disk: 1 means the existing iso file has been corrupted or it might be blocked. In order to get rid of the following message:
Our suggestion for you:
1-) Please re-download ENG iso media from esupport.aspentech.com on your desktop.
After you complete downloading the media, please right-clic... |
Problem Statement: Clickjacking, also known as a “UI redress attack”, is when an attacker uses multiple transparent or opaque layers to trick a user into clicking on a button or link on another page when they were intending to click on the top-level page. Thus, the attacker is “hijacking” clicks meant for their page an... | Solution: Aspen Unified supports iframe by design, but to avoid Clickjacking attacks you may add a mitigation in IIS settings by adding X-Frame-Options header to responses with the “SAMEORIGIN” option value.
Steps for adding header:
Select Start, select Administrative Tools, and then select Internet Information Service... |
Problem Statement: On Aspen Unified Scheduling V14 CP1 or below, the events strategy table in the results database was flawed in that it did not allow a strategy with duplicate assets, for example a fixed series strategy where tanks are repeated. Additionally, the table also did not specify the sequence of assets in th... | Solution: If you want to upgrade Aspen Unified to CP2 and you have an active AUSResults DB which is used for Aspen Unified Scheduling (not an AUPResults DB, which is used for Aspen Unified PIMS), please open SQL Server Management Studio and expand your AUSResults DB, then expand tables, right-click aus.EventsStrategy t... |
Problem Statement: This article described the steps that can be taken to revert the collinearity fix of a Master Model | Solution: On the following example, we have a Master Model that has a Collinearity Fixed implemented. The following tables will show the differences between a Master Model with and without Collinearity.
AI-2020 AI-2021 AI-2022
FIC-2001SP -0.412672 -0.237160832 0.131835
FIC-2002SP 0.00547831 0.36489 -0.168775
FIC-20... |
Problem Statement: This article described what are the recommended steps to address connection problems from DMC3 when it shows error 10053 | Solution: Error 10053 can be related to different causes on the Server. One problem that seems to be consistent on DMC3 could be relating to the packages of information that CIMIO send from the Online Server.
The problem can be addressed in different scenarios:
1.- The communication does not happen on DMC3 multi–Test... |
Problem Statement: How to disable or enable automatic name generation for block or stream in utilities planner? | Solution: In Aspen Utilities planner, you can enable or disable automatic name generation for blocks or streams. To access this option, follow the below steps:
Select Tools | Settings | Check or uncheck the automatic name generation option for Blocks and Streams | Click OK or Apply
Keywords: Name, Block, Stream, Tools
... |
Problem Statement: What will happen when we assign Initial as the variable specification in Aspen Utilities Planner? | Solution: In Aspen Utilities planner, you can assign a specification to a variable either when you declare it, or after its declaration. Parameters do not have specifications, as their values are always known. You can also specify a value for a variable or parameter when you declare it or afterward.
There are three op... |
Problem Statement: How to add a water stream in Aspen Utilities Planner V14.0? | Solution: In Aspen Utilities planner, there are different types of streams available. (Air Stream, Steam Stream, Fuel Stream etc.). Steam stream is used to represent both steam and water.
Steam is the gaseous form of water. Steam is chemically the same as water. Steam differs from liquid water because it has more ener... |
Problem Statement: What is the significance of Area column while entering the demand and availability profile in Aspen Utilities Planner V14.0? | Solution: In Aspen Utilities planner, we can use the Profiles Editor option to enter data for utility demands and equipment availability. Profile data is grouped in cases. Each case contains an equipment Availability profile, a utility Demand profile, and a period set. A period set contains any number of periods, each ... |
Problem Statement: This | Solution: outlines how to perform a clean restart of an Aspen Cim-IO Interface with Store and Forward enabled.
Solution
The following are general guidelines for stopping and starting an Aspen Cim-IO Interface with Store and Forward enabled. The exact procedures may vary depending on the version of the Cim-IO, the inte... |
Problem Statement: This article described what are the Deployment Model Options on DMC3 Builder. | Solution: The different Model Options on the Deployment node of DMC3 Builder is a new feature that was included starting from V12.1. The main reason of having this deployment option is to decrease the size of the file when a snapshot of the controller is taken as well as reduce the memory used for DMC3 Builder when the... |
Problem Statement: How to check if there is idle user connection on the server
Versions
2006.5 CP3, V7.1 CP1 and higher | Solution: Idle Users Timeout
Some customers found that after ending all Aspen Basic Engineering sessions, the Administration tool showed that users were still connected - therefore the licenses were not being freed. At 2006.5 CP3 we have implemented an idle session timeout capability which checks for idle users on a wo... |
Problem Statement: Is it possible to model an oil shale retorting process in Aspen Plus? | Solution: Attached is an example of a model for a fluidized-bed oil shale retorting process. It is intended to:
Provide an example of how to model the various areas of this process
Supply a starting set of components and physical property parameters for modeling oil shale retorting processes
This model is not intended ... |
Problem Statement: What is included in the Aspen In Plant Cost Estimator cost base? | Solution: The Basis for Capital Costs includes:
Units of measure customization.
General mechanical design rules for equipment, piping (general, material and custom), civil, steel, instrumentation, electrical, insulation and paint.
Project costs for field supervision, domestic freight, taxes, permits, engineering, con... |
Problem Statement: How do I find the Cost Basis in Aspen Process Economic Analyzer (APEA) V14? | Solution: To find the Cost Base with which APEA works in V14.
It is necessary to open APEA and look in the Help tab, and then click on Show Cost Basis
You will get a table showing the Cost Basis for that version:
.KeyWords:
Cost Basis, Firs Quarter 2022, Show Cost Basis
Keywords: None
References: None |
Problem Statement: After performing a migration or an upgrade of the Aspen Watch server, when trying to delete an ACO controller application in Aspen Watch Maker, a message error shows up saying something like “The requested task was not performed. Error writing to IO_PUT_CBPUB_01 63 IO_VALUE_RECORD&FLD: Field is not c... | Solution: The error message points to a specific record we need to identify in IP.21. To do this, go to InfoPlus.21 Administrator, and using the ribbons of the top, click on Find > InfoPlus.21 Record, then search for the record as shown in the image below:
Then, the status of the IO_RECORD_PROCESSING value must be tur... |
Problem Statement: How to map the equipment that we miss in auto map and size in Economic Analyser tab of Aspen Plus? | Solution: For Economic Analyser, it is important to size the equipment. Sometimes, we miss to do sizing in simulation Environment. This quick work around helps us to do auto sizing for the equipment we missed during simulation in Aspen Plus.
For a good practice, always run the model before activating Economic Analys... |
Problem Statement: When the Windows operating system is upgraded from one version to another (for example, from Windows 10 to Windows 11) it could potentially impact the proper operation of any existing software, including AspenTech's. Does AspenTech support the continued normal operation of its software when the Wind... | Solution: No, AspenTech recommends the re-installation of its software. Here is the text of a note which is found in the Platform Specifications:
AspenTech does not support the in-place upgrade of the Operating System (for example:
upgrade Windows 7 to Windows 10) with AspenTech software already installed. Our
recom... |
Problem Statement: Unable to start an external task in Aspen InfoPlus.21 Manager with error message similar to below screenshots.
The output file (for example screenshot above, the output file is called TSK_U_CIMIO_1.OUT) of the task in question logged the following error message.
“EXTSKINI failure. ERRCODE = -26 Sy... | Solution: For external task, the checkbox beside External Task need to be ticked.
Launch Aspen InfoPlus.21 Manager.
Double-click on the task name which is unable to start under the Defined Tasks section.
Tick the checkbox beside External Task highlighted in above screenshot. (E.g. TSK_U_CIMIO_1)
Click on UPDATE button.... |
Problem Statement: A critical part of any Aspen InfoPlus.21 upgrade is the snapshot upgrade. Sometimes the snapshot may fail to upgrade successfully from one version to another, and the Upgrade.out file has messages like this:
Unable to write ' 939.091'
to the field: 'XB_6DI4E01 2 Q_SUBGROUP_VALUE '
** Invalid key ... | Solution: There are a couple of potentialSolutions.
Option 1
This particular Upgrade Wizard failure can be solved by first running the snapshot through the Wizard for its own version. For example, if upgrading a version 2006 system, and this failure occurs, first upgrade it from 2006 to 2006. This will not fix a corr... |
Problem Statement: On the Results | Thermal/Hydraulic Summary | Heat Transfer | Heat Transfer Coefficient Tab, there are two results for the film coefficient for the tube side, Tube Side Bare area (OD) / ID area. It is not clear on the difference between these two values and how are they calculated. | Solution: The overall coefficient for tubes is defined on the basis of the area using the outer diameter (OD) of the tube, following the next equation.
Based upon the outside area, then the overall heat transfer coefficient (U) becomes:
Where
The subscripts o, i and w refer to the outer, inner and wall respectively.
Th... |
Problem Statement: When modeling a highly non-ideal mixture that forms two liquid phases on some stages using a DSTWU model to get an initial estimate and RadFrac for more rigorous modeling, the results are vastly different between the two models. RadFrac provides a much poorer separation than DSTWU. What is causing th... | Solution: DSTWU is a short cut method used to calculate the minimum number of stages or the minimum reflux ratio. It is not recommended for highly non-ideal mixtures. It doesn't do mass balance or energy balance. It assumes that the liquid and vapor flow rates are constant throughout the column and the relative volatil... |
Problem Statement: How to see the assay created in the feeder block in Aspen HYSYS? | Solution: The Feeder block will only display the assays that use the same Fluid Package that the feeder itself is using. So if the assay uses a different fluid package than the rest assays, you won't be able to see it. You would need to either change the fluid package of the assay, or change the fluid package for the b... |
Problem Statement: How to resolve Aspen Simulation Workbook issue that is taking to so much time to link Aspen HYSYS model? | Solution: In order to resolve Aspen Simulation Workbook issue that is taking to so much time to link Aspen HYSYS model, you will need to change the setting following “Update Excel Functions When Open Workbook” to False, save the file and try again.
Keywords: Aspen Simulation Workbook, Aspen HYSYS, Link
References: None |
Problem Statement: How do I create a user-defined unit operation block? | Solution: The attached example shows how to develop a simple coal combustor User Model with CI, NC,and MIXED substreams. Illustrates use of IFCMNC, PQ FLASH, KFORMC, IRRCHK, ERRPRT, RPTHDR, IPASS, NRPT, CPACK, NCPACK, AVEMW, User Calculated HCOMB, HCOALGEN, NTHGEN.
The Fortran subroutines is attached. The original exam... |
Problem Statement: Checklist: everything you need to start your v14 aspenONE deployment today | Solution: The checklist below will assist you with adopting aspenONE v14. A PDF version of the checklist is attached to this article.
Review product documentation
Hardware and software requirements- AspenTech Platform Support Page
If deploying in the cloud, review AspenTech Cloud Support Portal
Product Release notes an... |
Problem Statement: When attempting to open the AspenAPC Webpage, http://<servername>/ASPENAPC, it shows the error:
Http failure response for http://<server>/AspenAPCService/Configuration/GetUserProfile: 500 Internal Server Error | Solution: Before trying these steps, check if you can access the Production Control Web Server Interface, http://<servername>/atcontrol. If the following error appears, please refer to KB 000099683 instead.
Server Error in ‘/ATControl’ Application.
Could not load type ‘System.ServiceModel.Activation.HttpModule’ from a... |
Problem Statement: How to edit the demand forecasting editor in Aspen Utilities Planner V14.0? | Solution: Demand profile / availability profile can be set by profile editor. Click on update.
Demand forecast editor allow user to set number of periods.
Change number of periods, and click calc, and then save. After that pop-up show, click ok.
When going back to profile editor, you can see the update demand/availa... |
Problem Statement: After setting up a subscriber IP.21 as a part of the tag replication process, when using Aspen Process Explorer to view the tag in a graphic, the tag value will appear for several seconds before changing to ***. | Solution: The map record for a tag’s definition record may be mapped to the incorrect field on the subscriber. Change the value of the map record field MAP_CurrentValue from IP_INPUT_VALUE to IP_VALUE.
The standard map records for tags created via IP_AnalogDef, IP_DiscereteDef and IP_TextDef are IP_AnalogMap, IP_Discr... |
Problem Statement: Reset IP.21 Historian repository configuration to help resolve unusual behavior in history repositories, such as having multiple active filesets as shown in the screenshot below. | Solution: Resetting the history repository via this process does not delete history. However, this process will temporarily remove the ability to access historical data until the procedure is fully completed.
1) With IP.21 database running, open IP.21 Administrator, expand the Historian object (screenshot below) and r... |
Problem Statement: Why is the vapor composition Y needed in the physical property monitor user subroutine calls for liquid fugacity as given below?
CALL PPMON_FUGLY (T, P, X, Y, N, IDX, NBOPST, KDIAG, KPHI, PHI, DPHI, KER) | Solution: The vapor composition (Y) was added years ago to accommodate user K-values routines (PPMON_KVL) which may require both X and Y in estimating the K-values. In Aspen Plus, the K-values (KVL) are calculated by the ratio of the fugacity coefficients KVL(i)=PHILMX(i)/PHIVMX(i). If the vapor fugacity coefficient is... |
Problem Statement: Reporting the upper and lower flammability data of pure components at specific temperatures is important since there are published temperature correction correlations for explosive limit data. How do you determine the explosive point for components in Aspen Plus? | Solution: The flammability limits for each component are available in the databanks as FLML (Lower Flammability Limit) and FLMU (Upper Flammability Limit).
FLML and FLMU can be retrieved in the graphical user interface (GUI) with the following steps:
On the Properties Customize | User Parameters form, add FLML and FLM... |
Problem Statement: Can I use the Aspen Plus reactor models for electrolyte systems? Are there any restrictions? | Solution: There are some restrictions applicable to the usage of reactors in electrolytic systems. In general, the apparent approach can be used for a wider range of reactor models.
Apparent Approach
RGIBBS can be used for vapor phase reactions only.
All other reactors can be used freely.
Reactions should be among ap... |
Problem Statement: The BIODIESEL databank has components with names such as TAG-AAL and TAG-LMP. What do these mean? | Solution: The components in the biodiesel databank are mostly glycerol derivatives. These are named based on the one, two, or three fatty acid groups attached to glycerol.
These fatty acids are used in these components:
Name Formula of isolated fatty acid Combining form Abbreviation in TAG
Lauric Acid CH3(CH2)10COOH... |
Problem Statement: What is the HTC Database in AEA? | Solution: The Heat Transfer Coefficient (HTC) Database view contains a list of default heat transfer coefficient (HTC) values from some common fluids.
By default, AEA calculates the Overall U based upon the stream side film coefficient (HTC), which in turn is calculated by using stream properties.
For further details, ... |
Problem Statement: Can I add utilities such as high pressure steam in Aspen plus? | Solution: In Aspen plus, users may tag and designate material and energy streams as utilities.
With this information Aspen Plus can calculate the utility consumption per utility type as well as total hot/cold utility consumption in the flowsheet.
Aspen HYSYS provides a number of built-in utilities with defined heat ca... |
Problem Statement: Is there anything that can be done if an .apwz is corrupted and does not open in Aspen Plus?
Sometimes there is a message: Unknown format for Aspen Plus Document. | Solution: Aspen Plus Compound (.apwz) files are essentially .zip files.
Often the files can be unzipped and the files can be recovered. Often there is a corrupt .apw files; however, there is usually a backup file that can be opened.
Steps:
Make a copy of the .apwz and rename it to .zip.
Open the .zip file using Winzip... |
Problem Statement: How to Bulk Close Stale Alerts in Aspen Mtell Using PowerShell
When to Use This Method
This method is ideal when you have a large number of open alerts in Aspen Mtell that are considered stale and need to be closed quickly and efficiently. It's particularly useful in scenarios where manually closing... | Solution: involves a PowerShell script that interacts with the Aspen Mtell API. This script allows users to close multiple alerts simultaneously by defining specific criteria such as time range and asset ID.
The script will be provided attached to this KB article as a file called Bulk close alerts script
How It Works
D... |
Problem Statement: When using ABE web explorer, the software communicates with a database on a server. But, this server connection can fail due to multiple reasons.
In this article, you will find a troubleshooting suggestions for the server connection for HTTP Error 503 | Solution: The HTTP Error 503 is occurring because the ABEAppPool is not running.
The following is recommended to check to solve these errors.
Open IIS (Internet Information Service Manager) from windows start page
Select the Application Pools node
You will see the ABEAppPool and the status is most likely Stopped
Right ... |
Problem Statement: Aspen Shell & Tube Exchanger can be linked to Aspen Plus to perform detailed analysis of heat exchangers. Calculations may be performed to determine a Design for a given duty, Check/Rate a given heat exchanger for a duty to see if it is over/under surfaced or perform simulation calculations for an ex... | Solution: describes how this may be changed for a file embedded in Aspen Plus.Solution
For a HeatX block within Aspen Plus, in the Setup | Blocks | Specification form, the Shell & Tube program can be used for different types of calculations (Design, Rating, Simulation, and Maximum Fouling).
When a Shell&Tube exchanger ... |
Problem Statement: How do I connect a stream from the main flowsheet to feed into the Hierarchy and transfer only a subset of the components into the hierarchy? I have tried creating a Component List (COMP-LIST), but there are parameter errors about some of the components not in the list. | Solution: It is possible to use a Component List to limit the number of components *displayed* in the input and results within the hierarchy. The Component List should include all of the components present. Component List is a feature in the User Interface and does not affect the engine calculations. This means that As... |
Problem Statement: This is a corollary to another KB article: https://esupport.aspentech.com/S_Article?id=000101141, where the error 1920 was caused by a port already being taken by a different service.
First, confirm that user performing the installer has administrator privileges.
Secondly, confirm that this issue i... | Solution: Open Services
Search for Net.Tcp Port Sharing Service > Right-click Start (or Restart if it is already running)
Right-click Net.Tcp Port Sharing Serivce > Properties > Change Startup type to Automatic
Go through the installer again and it should succeed
Keywords: None
References: None |
Problem Statement: Is it possible to turn off mass balance checking in a User unit operation block?
Sometimes the USER or USER2 unit operation block intentionally does not mass balance, and it would be nice to not have warnings every time that the block executes. | Solution: It is possible in the subroutine Fortran code to set the the USER_BALMAS integer variable in the PPEXEC_USER common block to a value of -1 to skip the mass balance check.
USER_BALMAS
Integer Variable in PPEXEC_USER Common
Whether Aspen Plus should perform a mass balance check on completion of user unit oper... |
Problem Statement: How to toggle between the default APM license type and token licenses in Aspen Fidelis?
When setting up Aspen Fidelis licensing it is required to specify the license type in order for the correct license to get checked out. In order to do these users will need to utilize the Fidelice License Declarat... | Solution: Open Fidelis License Declaration from within the Windows Menu
Select the correct License type
Open Aspen Fidelis and it will now checkout the correct License and no longer show the error message
Keywords: License failed
Wrong license
Buckets
SLM
References: None |
Problem Statement: How to clean the data in a historian before importing it into Aspen ProMV?
It is often required to clean the data available in a data historian before importing it into Aspen ProMV. Using Aspen One Process explorer ranges of undesired data can be excluded in order to import only the desired data into... | Solution: Open Aspen ProMV Online
Select AspenONE Process Explorer from the option in the top right corner visible when selecting the wrench icon
On the dashboard select the Process Explorer icon
Type the tag name into the tag selection filter and select all the required tags from the menu and the tag will be trended b... |
Problem Statement: When viewing agents in Aspen ProMV Online, all models show:
Calculation error. Read tag data failure
The RabbitMQ error logs show:
[Error] Executor.cs::PublishRunningState Failed to publish running state: RabbitMQ.Client.Exceptions.ChannelAllocationException: The connection cannot support any more c... | Solution: The lack of perceived disk space found by RabbitMQ causes it to block all connections due to lack of resources. In this case, this was due to a machine using a non-English machine with non-ASCII codes as paths. This issue was fixed in RabbitMQ V3.9.13 (https://github.com/rabbitmq/rabbitmq-server/releases/tag/... |
Problem Statement: For Mtell Alert Manager, the URL used to access the MAM dashboard is set during the configuration process, which is displayed in the alert emails. But for users who want both Mtell View and Mtell Alert Manager links in their emails, these two links may be different depending on how the server name is... | Solution: By default, Mtell View uses the Server Name defined under System Manager > Settings > System Settings > General. But different corporate networks may require extensions such as *.corp or other customized versions to be added onto the server name in order to access certain URLs. This is automatically done for ... |
Problem Statement: Often occurring after upgrades, you may see a dialog box after trying to login to Process Pulse which simply says 'Failure'. | Solution: This error typically occurs when a previous Process Pulse installation is uninstalled, then a new version is installed without going through the upgrade process. Part of the upgrade involves updating the SQL database which a clean installation bypasses.
You can verify if this database update took place by nav... |
Problem Statement: When configuring Mtell Alert Manager through the configuration app, you may see:
There was an error please try again: Exception of type 'APMSeeCommon.Exceptions.APMServicesNotRunningException' was thrown | Solution: This error means one or both of the MAM services are not running.
Open Services
Find APM See Data Collector Service and APM See Data Transformer Service
Right-click > Start if either is not running, or Right-click > Restart on both services
The configuration app should now complete successfully
Keywords: None... |
Problem Statement: The ENVI (Environment for Visualizing Images) format is the standard format for hyperspectral images in Aspen Unscrambler HSI. It contains general raster data arranged as a binary sequence. When opening the ENVI data files through Unscrambler HSI, they must be accompanied with an associated header fi... | Solution: It is recommended to first verify if the processing or instrumentation software used to generate the hyperspectral imaging data can output to ENVI format. However, if this is not an option, there are a number of available third-party software packages which may be capable of converting to ENVI. Note that Aspe... |
Problem Statement: Where can I find the Aspen Mtell Alert Manager logs? | Solution: The Mtell Alert Manager logs can be found in the directory:
C:\Program Files\AspenTech\Aspen Mtell Alert Manager\Logs
Here you should see logs from the different MAM services, such as the Data Collector, Data Provider, and Data Transformer logs.
Keywords: None
References: None |
Problem Statement: How do I uninstall PyCamo for Aspen Unscrambler? | Solution: Open Command Prompt as administrator, or open a code editor terminal
Execute pip uninstall PyCamo or py -m pip uninstall PyCamo if Python is not in the system PATH
Wait for command to complete and PyCamo is uninstalled
Keywords: None
References: None |
Problem Statement: When querying a tag either from Map Sensors in Mtell System Manager or quick SPC in Mtell Agent Builder, tag data will be in a loading state for a long time before it gets timed out. Live agents could not be processed and appears to be in a 'Awaiting Data Acquisition' status. When looking through the... | Solution: Firstly, the above connection timeout error message suggests that the query to the historian was made but no response was received. Both data source connection in System Manager and the Honeywell PHD adapter shows Connection Successful indicating that Mtell is able to communicate with the adapter, but does no... |
Problem Statement: Aspen Process Pulse uses .NET 4.8 as a dependency, and reinstalling it may help to resolve certain issues. However, on newer versions of Windows Server, where this particular issues was observed on Windows Server 2022, uninstalling .NET 4.8 and then reinstalling leads to the message .NET framework 4.... | Solution: Both Server Manager and Powershell depend on the .NET Framework 4.8, so uninstalling it leads to a dependency conflict, as trying to reinstall .NET 4.8 the system will try to launch Server Manager, which no longer has all of its dependencies.
In order to properly reinstall .NET 4.8 , download the offline ins... |
Problem Statement: What are the general performance benchmarks for running Aspen Mtell? | Solution: Guidance for Mtell servers:
Remove old log files every few months, especially the agent service log folder which generates the most log entries. Log files are created on a daily basis allowing deletion of older logs while preserving the latest.
Check the Message Retry section in the Aspen Mtell System Manager... |
Problem Statement: What is the purpose of these two CompQueryDef records, CooperativeQuery and TriggerChange? | Solution: These two records are used in the routine operation of the Aspen Enterprise IP.21 Historian (formerly the Collaborative). These would be present on a member of the Enterprise IP.21 Historian or on a system where someone has recloaded the cooperative.rld file.
Keywords: None
References: None |
Problem Statement: Error message when launching Aspen Process Explorer:
Security Initialization Error: Init Cache COM Error, Number: -2147467259 | Solution: To resolve this error, please check the following:
1. Make sure that the default web site is running within IIS. If the default website is not started, this could be the cause of the problem (check in IIS manager).
2. Enable WRITE access for all users to the following folder: C:\ProgramData\AspenTe... |
Problem Statement: Query example to change the Repository for an individual tag or all tags within a Definition Record | Solution: Before changing the repository of a Tag take a look to the following Kb article What are the consequences of moving a tag from one repository to another repository?
1.- Change Repository for all tags within a Definition Record:
UPDATE IP_ANALOGDEF SET IP_ARCHIVING = 'OFF';
UPDATE IP_ANALOGDEF SET IP_REPOSIT... |
Problem Statement: This Knowledge Base article provides steps to configure Aspen InfoPlus.21 Data and Tag Replication for V8.0 and above. | Solution: Following are the steps to configure the Replication SUBSCRIBER (Central IP.21 Database) & PUBLISHER (Plant-Level IP.21) machines.
PUBLISHER – Plant-Level IP21:
Before beginning this procedure, determine which Aspen InfoPlus.21 plant-based systems will replicate data and tag information onto the central Asp... |
Problem Statement: The need for creating a deployment package for installing Aspen Online and selecting a specific SQL Database instance for Aspen Online to use without manually intervening in that process.
When running the Aspen Online Service with the Local System account, you'll need to run the selectinstance.bat t... | Solution: Two arguments have been added to SelectInstance.bat to help automate for deployment packaging. When you run SelectInstance.bat, you can optionally add one of these arguments to the command to specify the SQL server instance, instead of selecting it in step 5. If you specify both, the first one specified will ... |
Problem Statement: This article describes how to create an animated gauge using the new AspenONE Process Explorer feature, Process View Authoring. | Solution: Open AspenONE Process Explorer on the web browser of your preference and go to the Process View Authoring page.
Click the plus sign (+) to create a new project and give it a new name on the Description field.
If you´d like to add a title for your dashboard, click on the text icon (A) under Basic Shapes. You m... |
Problem Statement: When working on an APC server it can be hard to figure out which Emergency Patch has been installed. | Solution: Version V14 and newer:
Starting V14, there is a new program called aspenONE Manager which contains a Installed Updates/Patches section where you can see which Emergency Patch or Cumulative Patch has been installed, this program can be accessed from the Windows Start menu, under the Aspen Configuration Folder:... |
Problem Statement: This document describes how to capture memory snapshots for finding memory leaks using Microsoft’s User-Mode Dump Heap (UMDH) tool.
WARNING !!! System reboot will be required. The process described in this document involves changes to the behavior of the Windows operating system which can lead to s... | Solution: Step 1: Install the Windows Debugging Tools
The latest Windows SDK can be found using this link: https://developer.microsoft.com/en-us/windows/downloads/windows-sdk/. When installing you only need to choose the debugging tools option.
Note: For Windows Server 2016/2019, please obtain Windows 10 SDK (the re... |
Problem Statement: After installing the Aspen Plus family V14 Cumulative Patch 1,document (.apw) files need to be re-run.
Aspen Process Definition Files (.appdf and .aprpdf) files no longer work. | Solution: The V14 Cumulative Patch 1 makes changed to the recdef system definition files.
This means that the Aspen Process Definition Files (.appdf and .aprpdf) files will be different and will need to be regenerated if they are referenced in other products such as Aspen Custom Modeler (ACM) or Aspen Utilities Planner... |
Problem Statement: How to use the Collection Server settings for the Auto Upload Tool and usage logs uploads. | Solution: The Collection Server Option allows you to collect usage log files by transmitting them to a shared collection server from multiple SLM servers within your organization. The collection server will then be configured to transmit usage logs from these servers to AspenTech.
This article will provide instructions... |
Problem Statement: Some customer wants to extract the HH (Hour), MM (Minute), and SS (Seconds) separately from the THISTM parameter for use in calculations. They only require the hour and minute values not the date for a particular calculation they perform. | Solution: To extract the hour, minute, and second values from THISTM, you can use the LSTDAY and LSTSEC parameters to perform the necessary calculations.
LSTDAY: The LSTDAY parameter represents the day for which the calculations are being performed.
LSTSEC: The LSTSEC parameter represents the integer number of secon... |
Problem Statement: This knowledge base article illustrates how to Configure CIM-IO Test API Software to Run as an Administrator | Solution: The CIM-IO Test API software is a valuable tool for testing and troubleshooting industrial control systems. However, sometimes users may encounter issues with the software prompting them to log in as an administrator. This can be due to insufficient privileges or permissions on the user's machine. To help res... |
Problem Statement: Aspen Production Control Web Server provides users with options to select how the final calculation result for the current custom calculation will be obtained and displayed in a KPI Plot. With multiple options available, users may face difficulty in choosing the appropriate option that meets their sp... | Solution: Aspen Production Control Web Server offers six calculation result options that users can choose from when determining how the final calculation result for the current custom calculation is obtained and displayed in a KPI Plot cell.
These options are as follows:
Average - This is the default option that displa... |
Problem Statement: The performance of the APC Performance Monitor on Windows can be impacted by several factors, such as inconsistent network time protocols, enabled screen savers, disk fragmentation, virus scanner interference, and enabled tracing in Data Sources (ODBC). These factors can degrade the server performanc... | Solution: Implement a Network Time Protocol (NTP)
Ensure all computers on the network use a consistent Network Time Protocol (NTP) to accurately obtain, analyze, and process data with consistent timestamps. Use the Windows Time service (W32tm.exe), which is included with the operating system, to accomplish this.
Disabl... |
Problem Statement: The APC DMC Controller has a low limit of -9999 for variables. However, this value is considered a bad value due to historical reasons, as it signifies an out-of-range value or a connectivity issue between the instrument and the DCS. This limitation poses challenges when dealing with instruments that... | Solution: To overcome the limitation of the low limit of -9999 and prevent the variable from being marked as bad, the following steps can be taken:
Scale the Variable: Try scaling the value of the variable so that it falls within the range of -9997 or higher. For example, you can divide the value by 1000 and use K-unit... |
Problem Statement: When running Aspen Watch Maker and attempting to execute the Install Database Configuration, some users are experiencing crashes. This issue prevents the successful installation of the Database Configuration, causing frustration and hindering workflow. | Solution: To overcome the crashing issue during the execution of the Install Database Configuration in Aspen Watch Maker, a workaround has been identified. Follow the steps below:
Open the Command Prompt (cmd) as an administrator.
To do this, right-click on the Command Prompt icon and select Run as administrator.
Navig... |
Problem Statement: This Knowledge Base article aims to provide insights into the user’s utilization of Aspen One Process Explorer and address common questions regarding user access. | Solution: Regarding the User’s utilization of Aspen One Process Explorer in IP.21, the number of tokens consumed depends on the Maximum Point Count that is set, each 4000 points equal to 1 token.
To check your IP.21 database maximum point count navigate to the following:
Open the Infoplus.21 administrator.
Expand the I... |
Problem Statement: Many customers want to implement animation on a text box object in Aspen Process Graphic Studio based on multiple conditions. | Solution: To achieve this animation effect, follow the steps below:
Open Aspen Process Graphic Studio and select the text box object you want to animate.
Enable animation for the text box:
Go to the Animation tab in the properties panel.
Check the Animation On checkbox to enable animation for the text box.
... |
Problem Statement: How to use the Miller Charts method for pressure drop calculation in a Bend? | Solution: Miller Charts method is not available for Bends in Aspen Hydraulics. Nevertheless, using a Tee block (which supports Miller Charts) and ignoring one of its tee branches can be a workaround.
In the image below the TEE-101 works as an elbow because PIPE-104 is ignored.
Note: We can not set zero flow in one of... |
Problem Statement: What can be done in this situation to get the entirety of the tag name to appear in the results? | Solution: TheSolution is to add a width nn command after the name field is requested. The nn would be equal to or greater than the longest tag name being requested. In this example the tag is 65 characters long and 65 is used for the width command (but IP_AnalogDef tags could be up to 256 characters long so a number ... |
Problem Statement: When aspenONE Process Explorer (A1PE) e-mail alerts are not working what are some troubleshooting steps that can be done? | Solution: --Make sure that the Aspen products are at least V12.2 or V14 or higher (versions older than that may not allow the e-mails to work).
--Start by reviewing thisSolution which includes basic configuration steps:
What is the procedure to configure alerts in aspenOne Process Explorer (A1PE) and send the alerts... |
Problem Statement: The definition of property sets for liquid-liquid equilibrium properties require careful definition by the user. In particular, the parameter KLL2 (Liquid-liquid K-value), and the mixture molar volumes are considered, as they are required for the calculation of the commonly reported ‘partition coeffi... | Solution: The partition coefficient is calculated from the distribution coefficient KLL2. Please seeSolution 85570 for details on this property. While KLL2 is based on activity coefficients (and through the equilibrium condition on molar fractions),
(1)
the partition coefficient is usually defined based on molar co... |
Problem Statement: What does Mat_cost.dat file contain in Aspen OptiPlant 3D layout? | Solution: Column 1, Material Name: This is the name of the material which is listed in the mat_prop.dat file.
Column 2, Cost: This is the relative cost factor for this material.
Keywords: Mat_cost.dat, Aspen OptiPlant 3D layout
References: None |
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