question stringlengths 19 6.88k | answer stringlengths 38 33.3k |
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Problem Statement: How to manage the FileCache created by Aspen Mtell | Solution: Aspen Mtell will create File Cache files on user machine when using Agent Builder to query SQL Server or Historian Server. The cache will be used when a user try to query same data from SQL Server or Historian.
User C:\ drive may get full if the Cache file size grows big. You can delete the FileCache content... |
Problem Statement: In the results database of a PPIMS model, we see the in PrInventory table (and some other tables as well), the column “Marginal Value” could not be interpreted the same way as marginal value in the full solution report. What does it mean?
In the above example, the Marginal Value is not 0 although ... | Solution: The “Marginal Value” in PrInventory doesn’t mean the marginal value of that stream. It represents the negative of the respective material balance row (either VBALXXX or WBALXXX, with “XXX” being the name of the stream) divided by the length of that period. Using the same example shown above, lets look at the ... |
Problem Statement: Is it possible to model in detail the condenser and reboiler in a column? | Solution: You can do a detailed modeling of a condenser or reboiler for a RadFrac column by connecting a heat exchanger to a column using pseudo streams. You need to define a pseudo stream on RadFrac to represent the fluid to the condenser and reboiler. Be careful to connect the pseudo stream to the correct connection ... |
Problem Statement: What are some of the key differences between PIMS-DR and PIMS-AO? | Solution: The core optimization algorithm is different in PIMS-AO than DR. PIMS-AO is generally faster, more accurate, and have less probability of running into local optima.
In PIMS-DR, the core optimization algorithm is called “recursion”. When calculating properties of different streams in a pooling submodel, PIMS-... |
Problem Statement: How do you use homogeneous nucleation for particle generation throughout the course of a polymerization? | Solution: Attached is an example of butylacrylate and vinylacetate emulsion with homogeneous nucleation and continuous addition of monomers which shows how the particle generation continues throughout course of polymerization which is a feature of the homogeneous nucleation.
The emulsion polymerization model is applic... |
Problem Statement: The value for DCPLS in PURE37 seems incorrect. The value in earlier versions seems reasonable. | Solution: DIPPR changed the liquid CP correlation for EG from equation 100 to 124, but the converter did not support this equation at the time we converted the data for PURE37. DCPLS is used only in predicting solid solubility of molecular species. If necessary, the value can be added on the Properties Methods | Parame... |
Problem Statement: After editing my backup (.bkp) file in text editor such as Notepad or Wordpad to remove an ADS section that was corrupt, the file crashes when opening in Aspen Plus. | Solution: We do not generally advise editing backup files directly, but this is sometime done to fix issues with the files. If you edit the file in Notepad, you must be sure to set the Encoding to ANSI on the Save dialog box. If it is set to a Unicode option such as UTF-8, this will render the file unreadable by Aspen ... |
Problem Statement: What are some steps you can follow to maximize your AspenTech support experience while working from home? | Solution: AspenTech Support is available to assist you while you are working from home with a variety of services, including but not limited to:
Access Technical Support via chat, phone, e-mail or web
24x7 Customer Care Service
Access to online Knowledge Base including product documentation
Assistance in resolving soft... |
Problem Statement: How to run Aspen Plus simulation from the command prompt (Aspen Plus Simulation Engine). | Solution: You can use the Aspen Plus user interface to develop the simulation model for a run and view the results, but when you have very huge flowsheet to run, you may consider to run the Aspen Plus simulation engine separately from the user interface. Doing this is one way to achieve maximum performance for large fl... |
Problem Statement: How do I obtain a license to run the Aspen HYSYS OLI Interface? | Solution: To use the Aspen HYSYS OLI Interface, you must first obtain the license directly from OLI Systems.
See (http://www.olisystems.com/contact) for more details.
Keywords: None
References: None |
Problem Statement: Getting “BATCH21_SP_GET_GENEALOGY has too many arguments specified.” while plotting Genealogy plot in AspenONE Process Explorer.
A new plot type, Genealogy, has been added to aspenONE Process Explorer V11 to perform Track and Trace analysis. However while trying to create a new plot, you encountered... | Solution: You need to upgrade the APRM Database to version 16 in order to use this new feature in v11.
Run Aspen Database Wizard.
Select Aspen Production Record Manager and click Next
Select Update the existing database and database objects and click Next
Click Next
Select Microsoft OLE DB Provider for SQL Server... |
Problem Statement: Why are my custom logos not displayed when using Web Datasheet? | Solution: The cause could possibly be due to ABE not able to copy the image file from "C:\AspenZyqadServer\Basic Engineering37.0\WorkspaceLibraries\Templates" to "C:\Program Files\AspenTech\Basic Engineering V11.0\SoloClient\wwwroot\Datasheets\images" for solo version, or to "C:\inetpub\wwwroot\AspenTech\aspenONEABE\Da... |
Problem Statement: Why am I not able to compare the loaded assay vs the existing Assay in the Assay data in APS? | Solution: This is a known issue in the existing versions of APS. The user is not able to compare the loaded assay vs the existing Assay in the Assay data. The steps are as follows:
* Open the demo model with the next login: User: ADMIN no password
* Go to Integration/PIMS to APS/Import Crude Assays
* Go to the Assay D... |
Problem Statement: Why do you see a “Script Error” when running the Results Window in V11 PSCP?
or | Solution: The script error occurs when you have a colorful map attached to the “Maps” section of your PSCP model. A colorful map means you are using the latest V11 map features, attaching maps including .bmp, .gst, .ptm, and .xml map files. The workaround is not to use colored maps but use greyscale maps instead. You c... |
Problem Statement: Why are ABE Windows strangely cropped and not displayed properly? | Solution: In some machines, ABE Windows may get cropped as shown below. Resizing the Windows does not help show more information on the right.
This is a known issue in ABE interface display compatibility with Windows. The current workaround is to adjust the scaling of Windows display. Reducing the scaling factor will ... |
Problem Statement: How to avoid the file missing when Office 2016 is installed on the system for Aspen V11 Media? | Solution: We need to manually check/add the registry key under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\ClickToRun\Configuration before the installation.
1) Right click the “Start” button and choose “Run” box.
2) Type “regedit” to the “Run” box and press Enter
3) Navigate to “HKEY_LOCAL_MACHINE... |
Problem Statement: Why is the Reload Simulator Automation not loading the changes in the beginning linefill? | Solution: If the user reloads the simulator manually, they can see the changes in the linefill. But, if we try to reload the simulator using automation, the changes are not loaded. For example, running the VBA code:
Private Sub ReloadSimulator()
Dim pss As Object
Set pss = CreateObject("Orion.Application")
Dim resu... |
Problem Statement: Why does liquid water (aqueous phase) occur in the vapor stream out of Sulsim condenser model? | Solution: This is a known problem with the current implementation of entrainment modeling in the condenser. There is no issue with vapor phase calculation inside the condenser. The condenser might have been specified with entrainment of liquid sulfur. The liquid sulfur is expected in this case, but not the aqueous phas... |
Problem Statement: In ABE V11 Drawing Editor, Gap/Ungap of connection does not work properly. | Solution: This is a known issue, and is addressed in V11 CP1. For urgent fix or alternative workaround, users can resolve this issue by following the below procedure:
Close any instance of the Drawing Editor.
Go to the installation folder where UserServices is located. The default location is C:\Program Files\AspenTech... |
Problem Statement: Attempt to enable FAST Aspen Fidelis Reliability (AFR) V11 Excel Add-in returns “license checkout failed” error. | Solution: When attempting to enable the FAST AFR V11 Add-in in Excel, AspenONE SLM Manager sends a pop-up message that says” License checkout failed”. Even though Aspen Fidelis Reliability main application launches without any issues and a valid license is available.
This is a known issue, in Aspen SLM Client V11, when... |
Problem Statement: How can I diagnose if my tags and database in an Aspen Online project are working correctly? | Solution: In an Aspen Online project, Tag validation should be performed:
During the configuration of a new project
When tag names, tag types and/or CIM-IO attributes have been modified in the AOL project
When changes occur in the historian, e.g. tag renaming or deletion
To run – Click the Validation button in the Diag... |
Problem Statement: How does Aspen Flare System Analyzer (AFSA) defines the composition when I specify the Molecular Weight? | Solution: For vapor only systems it’s often useful and fast to define the composition on each PRD by specifying the molecular weight of the fluid.
To define a composition from the Molecular Weight flare applies the following steps:
Scans for the selected Fluid Type.
Searches, from the available Components that match th... |
Problem Statement: Two issues are seen in the PCWS web page:
Under the Online tab, the Manage section is not visible to click on:
Under the History tab, although there is data visible for all other sections, when clicking on AW Maker, KPI Manager, or Tag Group Manager, the following “Permission denied” message is disp... | Solution: When configuring Manage, the software checks through all of the online applications APC data services provided under the Configuration tab. If there are no hosts identified, there will be none to check and thus, create permission issues for certain sections of the web page.
To solve this issue, add a running... |
Problem Statement: When using the HYSYS Line Sizing Manager, the calculated line Velocity doesn't match Stream Actual Vol Flow for certain streams. What causes this issue and when does it occur? | Solution: The Line Sizing Manager in Aspen HYSYS allows you to perform sizing calculations using stream data as reference and design/rate piping diameter based on certain criteria, such as maximum pressure gradient or maximum velocity.
However, the analysis that the Line Sizing Manager performs can provide incorrect r... |
Problem Statement: How does Model Scheduling works in Aspen Online projects? | Solution: In an Aspen Online project, Model execution scheduling is used so model calculations can be specified to be automatically performed at desired times of the day and/or at a desired frequency every day or based on the steady-state condition of the plant. This can be configured on the Models | Model name | Speci... |
Problem Statement: Which pre-requisites do I need to set up and install Aspen Online? | Solution: Aspen Online requires having an Existing Data Historian (e.g. IP.21) which serves as the DCS Input data. It can be on the same machine or a different machine
Server can be shared by multiple machines with Aspen OnLine installation
Existing simulation models (e.g. Aspen Plus simulation models(*.bkp), HYSYS sim... |
Problem Statement: Why the mass balance in the Delayed Coker is not accomplish? | Solution: The mass balance in the Delayed Coker is not the same as the outlet stream is not taking in count the coke formation in the reactor.
As shown below, the user can check the mass balance by taking in count the coke formation in a spreadsheet
Keywords: Delayed Coker, Mass, Balance, Formation
References: None |
Problem Statement: How to find the glass transition temperature in liquid? | Solution: There is this parameter in Aspen Plus/Properties.The glass temperature for polymers (and it's a rough approximation using Van Krevelen model , it's the average of the Tg of the segments).
The glass transition corresponds to the transition from the solid state to the liquid state (or the reverse one). It is b... |
Problem Statement: After creating Process tank in model and saving changes APS gives me an error below.
Then everything's fine, but after closing and reopening my process tank becomes crude.
Similar error can be observed with properties, when adding Properties to the model through the Model->Properties and trying to... | Solution: Entries were added manually to TANKS (or PROPRS) table so the X_SEQ number was incorrect.
You try to add a new tank on the flowsheet (or property in the model fromAPS interface) but as the X_SEQ is already there, it won't be possible.
To solve the issue please go directly to dbo.ATORIONKEY table and change th... |
Problem Statement: Do Acid Gas Fluid Packages support high concentrations of H2SO4? | Solution: Unfortunately, in Aspen HYSYS the Acid Gas fluid package can only treat H2SO4 as a trace component to model the effect of heat stable salts, so its concentration should be low (usually hundreds to thousands ppmw). High concentrations of sulfuric acid are not supported for this property package.
If the user w... |
Problem Statement: How do I set up and manage Aspen Online projects? | Solution: The Aspen Online product does not work with one single standard file, but with a folder structure containing several varying files. Firstly, in order to start using Aspen OnLine, the first step is to create a new project or open an existing project.
How to create New AOL Project:
Click “New” on Start Using As... |
Problem Statement: What do the checkboxes on the Run-Time ribbon of Aspen Online do? | Solution: The checkboxes on the Run-Time ribbon enhance and aid in the online run of the model. They can be seen as two different sections: the resolve Steady State section and the read/write section.
SSD print – generate steady-state detection report, checked by default
If Resolve SS is selected, the steady-state dete... |
Problem Statement: Why is there a grayed-out fin when using Plate-fin kettle? | Solution: When working with Plate Fin type exchangers, the exchanger types available are Standard axial flow, simple crossflow, multi-pass crossflow or Plate-fin kettle.
Plate-fin kettle exchangers are kettle reboilers, in which a crossflow plate-fin exchanger is used instead on a tube bundle. The parting sheets a... |
Problem Statement: Can I estimate missing properties of a new Database Component in Aspen Flare System Analyzer? | Solution: When you create hypothetical components in Aspen Flare System Analyzer (AFSA), the estimate button allows to calculate all the unknown properties that have not been manually entered.
However, if the user is creating a Database component (On the Navigation Pane | Databases | Components Database Editor) this Es... |
Problem Statement: Is it possible to set in APS that day of schuduler starts at 3 am? | Solution: Option Beg of Day Offset could be useful in that case. You can find it in Model Settings.
This is the number of hours that the refinery uses to move their schedule forward to the next day.
With default 0 value in the Beg of Day Offset field schedule starts at midnight.
Once you define 3, it denotes that... |
Problem Statement: We’ve installed Aspen Unified PIMS and can successfully log in, but not able to see icons on portal page. I can’t choose and migrate existing model | Solution: You need to log in AUP with the user, who performed the installation/configuration of AUP first. New user can’t give themselves rights, it has to be done under the administrative account.
You can verify which account is currently in use. To do that please use “User Info” button on the top right.
If you found... |
Problem Statement: Where are private and public Aspen SQLplus web reports saved? How can this location be changed? | Solution: Public and private reports are saved to XML files on the Web Server. The registry value that specifies the path of these files is the Reports value under registry key
HKEY_LOCAL_MACHINE\Software\AspenTech\InfoPlus.21\SQLplus\Report
The default path is:
C:\ProgramData\AspenTech\SQLplus
Modifying this registry ... |
Problem Statement:
When displaying a Data Point on a Graphic created with Aspen Process Graphic Editor or Aspen Process Graphic Studio, normally the Data Point showed is going to be retrieved from IP_INPUT_VALUE. Nevertheless, for some Data Points the values required to be presented must have already passed through th... | Solution:
1.- Open the Properties of the Data Point and go to the Data tab.
2.- In order to display values from the History Repeat Area, the following syntax must be used in Name: TagName 1 IP_TREND_VALUE, Where "TagName" is the name of the tag. And under Attribute select <VALUE>.
For example:
Note: For Aspe... |
Problem Statement: Why I can see Epsilon MAX iteration setting changes when loading model in V10/V11 PIMS AO
. | Solution: In PIMS AO versions before V10, the “Epsilon MAX Iteration Using Epsilon” default value is 30, while in V10 and beyond versions, Epsilon MAX iteration default values is changed to 10, since we found for many models having the default value at 30 delays unnecessarily convergence due to epsilon not being remove... |
Problem Statement: The Aspen Cim-IO Manager service will not start with “Error 1053: the service did not respond to the start control request in a timely fashion.” | Solution: This error can occur for different reasons including, the license server is not accessible, or the Cim-IO Manager service is not registered properly. In this case the Windows services file was not accessible because the name was changed to SERVICES.TXT. To resolve the issue rename the services.txt file to S... |
Problem Statement: We use SQL model and import events using Import Interface (Integration -> Import -> Events). APS will save 260 new imported events for more than one minute. Sometimes we need to import and save more than 500 events. Could you please suggest how to improve performance in that case? | Solution: Try to activate bulk events writing in CONFIG table. You can do it by entering “Y” in the column VALUE_ of row BULK_EVENT_WRITE (create it if necessary). It is N by default. In that case APS writes out each of the event tables one record at a time.
That option speeds up the writing of the event tables. Ins... |
Problem Statement: Is there any recommended procedure to distribute the heat loss in a FCC model? | Solution: It is unusual for users to provide heat loss estimates for entry in the Calibration Environment. Often, users leave all heat loss terms zeroed and allow any resulting heat balance error to be handled in the heat of cracking offset.
Recommendations:
The user may set a Flue heat loss term to account for an unu... |
Problem Statement: For some reason we see not the usual stream details in simulation mode, but a pop-up window "Combination Tank/Stream ... and property VOL is not in TREND_SCREENS" as below
All of my trends in the model are WGT. If I look in the TREND_SCREENS table, none of the trends are in VOL, only WGT. | Solution: Possible root of that issue could be that originally the trends were added in VOL, but later changed to WGT.
APS has in memory the previous data and it is not overwritten because it is a different property.
Please delete the TREND_BASE.DTA and TREND_BASE.DTAB from the working folder. These ones are Binary fil... |
Problem Statement: What type of reports can I generate from an Aspen Online project run? | Solution: Aspen OnLine has the capability of generating a number of log files, each of which focuses on different things to report:
Run Log: RunLog_0.log is located in the project folder. Contains information for all the input and output variables at the time of model execution.
Generally good first place to check to d... |
Problem Statement: What are the different tag types available on Aspen Online? | Solution: In the Aspen OnLine context, a tag is an identifiable and accessible collection of information. These collections hold:
Information originating from the plant,
Information being sent to the model and being returned from the model, and
Information entered by the user and being presented to the user.
Tags are u... |
Problem Statement: Why am I getting input error 1050 on Aspen Shell and Tube? | Solution: Aspen Online product can be run either from another Server (other machine different than the local one) or on the Local Machine. The first Aspen OnLine component to start is the Aspen OnLine service. If being ran on the Local machine, user requires to be logged in to a System account or using an Admin User.
... |
Problem Statement: When trying to connect the model using the Aspen Unified PIMS V11 Excel Add-in, the following error shows up: “Cannot link worksheet. Ensure the workbook is not in compatibility mode.” Error shows even when workbook is not in compatibility mode. | Solution: To solve this error, you will need to modify the file named AddinHome.cshtml in the next path: C:\Program Files (x86)\AspenTech\Aspen Unified\Web\Views\ExcelAddin
Remove the commented CDN lines in the file. The attachment in this article contains the modified file.
This issue will be fixed in V12.
Note: Pl... |
Problem Statement: APS crashes, when I click Model | Pipeline | Routs in some models without pipelines even. | Solution: It could be caused by corrupted PL_LOCATIONS table data. Please check if that table has ‘’ entries after db upgrade.
That should be corrected. Please change it due to the example from our DemoDSS model. You need to specify UNASSIGNED row. Then you should be able to use Pipeline menu without issues.
Keyword... |
Problem Statement: On Aspen HYSYS the pipe segment, the user can add the outside (external) insulation thickness and properties. Is there any way to add inner layer insulation properties for a Pipe Segment in Aspen HYSYS? | Solution: No, there is no way to add multiple inner and/or outer layers of insulation for a Pipe Segment in Aspen HYSYS.
To add multiple inner and/or outer layers of insulation for a Pipe Segment users will need to use the pipe segment or complex pipe within the Aspen Hydraulics subflowsheet.
Please follow these step... |
Problem Statement: How does #LIMITS work in APS? | Solution: In APS, keyword #LIMITS can be used in Units excel file to define modifications to tank limits.
It is a known issue that in the released versions #LIMITS keyword does not update MIN/MAX limits in property dialog box.
However, #LIMITS do work for the tank limits on trend screens. So that’s why we could see t... |
Problem Statement: What services are provided with the 24x7 Customer Care Service? | Solution: Customer Care Service:
Under the AspenTech Premier Plus support, customers can access Customer Care 24 hours a day, 7 days a week.
Our customer service mainly deals with non-technical issues such as:
User registration for AspenTech customer support website access
Support website usage issues and questions
So... |
Problem Statement: How to use #PL_DST keyword to set up Daylight Savings Time in APS? | Solution: In APS, keyword #PL_DST can be used to indicate that period lengths which are to be calculated using daylight savings time (DST).
To define period lengths as DST values:
1. Enter the keyword #PL_DST in cell A7. This keyword must be in cell A7.
2.
Keywords: None
References: the system generated value found in... |
Problem Statement: What services are monitored by the Aspen InfoPlus21 Health Monitor, AllIP21ServicesRunTest and how to add, or remove services? | Solution: The AllIP21ServicesRunTest monitors services listed in ..\AspenTech\InfoPlus.21\db21\etc\ServicesList.cfg. The Services List contains required Aspen InfoPlus21 services and optional services.
Example; Service Name;Display Name
Aspen Process Data Service;Aspen Process Data Service
Aspen InfoPlus21 ... |
Problem Statement: How to configure the correct driver in PIMS for a TLS 1.2 enabled database server?
When trying to connect to the database server, the user is getting the following error: [DBNETLIB]ConnectionOpen (SECDoClientHandshake().]SSL Security error | Solution: Aspen PIMS can connect to a database server with TLS 1.2 enabled. For this you will need to install "Microsoft OLE DB Driver for SQL Server". This driver supports TLS 1.2 security but you have to be using the correct version of the SQL server database driver. There are different versions of the "Microsoft OL... |
Problem Statement: Why do formulas inserted into an Aspen Calc formula have “.function” after them?
Problem Statement:
Some Aspen Calc formulas that include references to other Aspen Calc formulas include “.Function” after the name of the referenced formula. | Solution: Aspen Calc supports several formula types including, CalcScript, VBScript, Excel, COM Object, EXE. When creating a VBScript formula in Aspen Calc Insert Formula must be used to call another Aspen Calc formula so the bindings can be set correctly. Aspen Calc adds “.function” to a formula called from within a... |
Problem Statement:
How to perform custom calculation based on the attribute values within Aspen Basic Engineering (ABE)? | Solution:
Being able to perform custom calculations in ABE could be very useful as we often have plenty of equipment data imported to ABE that can quickly be used to produce preliminary sizing results. Users can define a calculation procedure in an Excel Spreadsheet and apply it to ABE through Bridge application. Alt... |
Problem Statement: If Regulatory Prop Constraints and Spec Targets are Defined at the Same Time, Which Property Will MBO Choose as the Bassline of the Optimization? | Solution: Using VOC as an example, If the setting is checked and if the spec targets are specified at the same time, regulatory spec is -27.5 (max) and a spec target is set at -28.5. Which one will MBO choose?
If the Regulatory Prop Constraints setting is checked, MBO will take that as the limit. So the max VOC will me... |
Problem Statement:
How to prepare a relief systems design documentation in the "Safety Analysis" for Hysys & Aspen Plus V11 | Solution:
Starting in V11, within the Safety Analysis environment, you can use ABE Datasheets to prepare documentation of the design basis for any PSVs, rupture disks, and storage tanks. The Safety Analysis environment provides standardized relief systems calculations and data consistency across the final report deliv... |
Problem Statement: How can I use Sensitivity Analysis to study the effect of mass/mole flow of a feed stream on the mass/mole fraction, activity coefficient and pH of a product stream? | Solution: This article demonstrates how to use sensitivity analysis in Aspen Plus and how to obtain properties such as mole fraction and activity coefficient for various components. As an example, a pure sulfuric acid stream and a pure water stream are mixed to obtain an acidic solution stream. The objective is to vary... |
Problem Statement: How to create and interact with a comment in A1PE | Solution: Comments and notes are useful when you want to keep a track of all the events happening on the plant for each tag.
Please find the following steps to create and edit comments inside AIPE.
1. Inside A1PE, on a plot expand the annotation panel and click the New (+) icon under Notes.
2. Choose the “Annotatio... |
Problem Statement: How to set up a sensitivity case scenario in a batch process? | Solution: In Aspen Plus the user can create different Model Analysis Tools such as Sensitivity Analysis, Optimization and Data Fit. For further information, refer to the following articles:
Using a sensitivity analysis to change the feed stream to a block
Optimization Example for Minimizing Steam Use
Using Data-Fit Cap... |
Problem Statement: Why is the Sound Power Level (SPL) value reported zero for certain pipes in my Aspen Flare System Analyzer flowsheet? | Solution: AIV/SPL calculations are done based on the vapor portion of flow only. The vapor criteria is based on upstream flow of the Pressure Relief Devices (PRDs). Hence, for the case of flashing liquid at the PRDs, SPL calculation for pipes downstream of these PRDs will show zero. This behavior can be changed in AIV ... |
Problem Statement: Why Sometimes Variable Bounds Defined in Non-Linear Equations are Not Considered in the Matrix Analyzer | Solution: This happens mostly with Q variables. The reason is because Q variables are often defined in multiple places in the model. For example, if the Q variable is referring to a quality of a stream, then they are generated from R rows. If the Q variable represents material composition, they are generated from compo... |
Problem Statement: What are the pre-requisite of using the setting “Build Crude Unit Swing Cut Quality Gradients” setting work in PIMS-AO? | Solution: First, the algorithm for this setting is proprietary to AspenTech. The math behind the scenes cannot be disclosed to anyone.
The setting is only available in PIMS-AO. It is in XNLP Settings -> Advanced.
This setting is defaulted to be turned off. In normal crude unit structure, PIMS will optimize how much o... |
Problem Statement: What database tables are updated when add/edit Products from Products Dialog box in MBO? | Solution: Here is an example below showing the DB table changes if you add a product through the product dialog box in MBO. Note this is when you don’t make any other changes to your schedule (no Gantt changes, events, etc).
1. Add a new product called “DUMMY”, and copy the specs from another existing product. Click O... |
Problem Statement: Is possible to create an Aspen Properties Database with hidden parameters, but unrestricted access? | Solution: When using the Aspen Properties Database Manager, in "Backup Database Wizard" for a security database just created, you can set the option “Give access to Aspen Plus/Aspen Properties Calculation Engine”.
This will hide parameters from GUI and Engine report for any user (inside or outside, including the user... |
Problem Statement: Why am I seeing different numbers in PIMS Submodel Calculator and APS SMC? For example, in PIMS I see coefficient is 2575.6102. When saving to SMC file and opening it through APS interface, coefficient appears as 2575.6104. The fourth decimal place is different in PIMS and APS. In this instance, this... | Solution: The numbers change due to conversion from float to double and double to float. Because of this, we expect numbers to change slightly in 6th to 7th significant digits. This behavior will not change a number of 0.0002 to 0.0004.
Keywords: Orion, SMC
References: None |
Problem Statement: When running a full project evaluation, the following error comes up: ERROR> 'STL- #' - COULD NOT SELECT BEAM OR COLUMN | Solution: A possible root cause of this errors could lie on extreme specifications entered fo the Civil elements, such as using an unrealistic value for the Horizontal acceleration (g) in the General Civil/Steel Specs in the Project Basis View. The subsequent errors let the user know that it is impossible to design ci... |
Problem Statement: Why do I see a flash failure error in Blowdown when modeling a full liquid pure component case? | Solution: This issue is specific to pure component systems modeled at full liquid initial condition.
Calculation for blowdown of pure component system with full liquid spec as initial inventory has been known for being difficult to solve. The convergence typically fails whenever the system reaches the line separating ... |
Problem Statement: How to solve "Output Error in OpenOutputDatabase for field" message in Aspen PIMS? | Solution: To solve this message, follow the steps:
Perform model cleanup. Model > Cleanup Model(s), select the model and click OK
Exit PIMS
Manually delete or rename Results.mdb in the model directory
Manually delete PMLOG11.mdb in the upper directory (above the model directory)
Relaunch PIMS
Keywords: PIMS, warning
Re... |
Problem Statement: Why Do We Not See the Full Decimal Places Shown in the Submodel Sections of PIMS Full | Solution: Report and SDMAP.xls?
Solution
Sometimes we don’t see the full decimal places reported in the full solution report and sdmap file. For example, you might see a value that should be “0.0005” but reported as “0”. This might cause problems if the report or file is going to be queries later. How do we resolve th... |
Problem Statement: Why does E608 Occurs when You Turn On Automatic Infeasibility Breaker in PIMS?
In V11, sometimes when you have a VPOOL table set up and modify some components in the virtual pool in a case, you will see the following error message stopping you from running the model:
*** Error E608. Only 81 of the... | Solution: As an example, if we declare a virtual pool VP1 in table VPOOL with 82 components. All these streams are purchased streams in table BUY. Then we proceed to a case to modify 81 out of 82 components except for 1 stream named HCS. Then you will see the above error message show up. Why is that?
When you set your... |
Problem Statement:
Why is specific gravity property not transferred from HYSYS to Aspen Basic Engineering (ABE)? | Solution:
ABE PipingSystem class contains attributes to hold density and specific gravity values as shown below
However, when viewing the values for these attributes after a simulation import or data transfer, we may find that SpecificGravity values are missing.
The corresponding HYSYS mass density property is re... |
Problem Statement: How to copy/paste PIMS AO internal tables from table grid? | Solution: In PIMS AO, internal tables are created based on corresponding model structures and they are listed in the model tree “Internal Tables” section to validate model structure or for users reference to add additional constraints according to the existing ones. It is not able to copy the internal tables from table... |
Problem Statement: What is the maximum tag name that can be entered into Aspen Cim-IO Transfer record IO_tagname field? | Solution: There are three groups of Aspen Cim-IO transfers Io, IoLong, IoLL with different IO_Tagname lengths.
The IoGetDef, IoGetHistDef, IoUnsolDef, IoPutDef, IoPutOnCosDef, have a 39 character IO_TAGNAME limit.
The IoLongTagGetDef, IoLongTagUnsDef, IoLongTagPutDef, IoLongTagPOCDef, have a 79 character IO_TAGNAME li... |
Problem Statement: The utility to create CIM-IO logical device CIM-IO IP.21 Connection Manager is not installed with APC Online, but only installed with InfoPlus.21. | Solution: Edit cimio_logical_devices.def to add or remove logical devices. This article introduces how to create CIM-IO interfaces and create logical devices with these interfaces.
1) Invoke the CIM-IO Interface Manager and click Create a new one link to add CIM-IO interface.
2) At step Interface, input the OPC DA ... |
Problem Statement: What are the compiler requirements for resolving “nmake” error in ACM V11? | Solution: ACM needs to access right compiler while generating procedure code for fortran subroutines.
If you receive an error “nmake ran with errors” message, then please make sure following compilers are present in the machine:
Visual Studio C++ 2017
Intel Parallel Studio XE 2017 Update 5 Composer edition for FORTRAN ... |
Problem Statement: Accessing a specific sub-flowsheet using VBA may throw some errors since the name may not be recognized | Solution: Sub-flowsheets in HYSYS are defined with two pieces of unique information – Name and Tag:
Users may call sub-flowsheets in VBA by making using of their tags with the following syntax:
Dim HySubFlowsheet As Flowsheet
Set HySubFlowsheet = HySubFlowsheets.Item(“Tag”)
Version
V11
Key words
HYSYS, Automation,... |
Problem Statement: If the node name defined for a device in the CimIO_Logical_Devices.Def file on the Aspen InfoPlus21 server does not match node name of the Aspen Cim-IO Server then Store and Forward will not forward data. | Solution: Follow these steps to determine is the node names are different;
1) Aspen InfoPlus21 server;
Open the Cim-IO\ETC\CimIO_Logical_Devices.Def file.
Identify the line that contains the details for the device.
The second column contains the node name of the Cim-IO server
EX: OPCDev1 NODE1 OPCDev1
Make a note of t... |
Problem Statement: How do I setup vessel pressurization and depressurization scenarios using Event Scheduler in HYSYS Dynamics? | Solution: HYSYS Dynamics can be used to study vessel pressurization and depressurization scenarios.
In this example, a feed stream composed of light hydrocarbon components including methane, ethane, propane, n-butane and n-pentane is fed into a tank. Peng-Robinson equation-of-state (EOS) is used as the fluid package t... |
Problem Statement: The Aspen InfoPlus.21 Administrator will not expand, or is slow to expand the Aspen InfoPlus.21 data source. | Solution: On the Aspen InfoPlus.21 server open a Command Prompt and verify that PING and NSLOOKUP return the correct Node Name and IP address.
If the node name or IP address are not correct then verify the following:
Check the C:\Windows\System32\drivers\etc\Hosts file and verify that all entries are correct.
Verify ... |
Problem Statement: Is the Aspen Calc AutoBinding setting in Options a system or user setting? | Solution: AutoBinding is a user setting that automatically binds CalcScript parameters to Aspen InfoPlus.21 tags when you create or modify calculations. Before you do so, you must ensure that the names of the parameters match the names of the tags and enable automatic binding before you create or modify a calculation.... |
Problem Statement: What to check if you encounter the error “XLP Case Stacking” in PIMS-AO? | Solution: XLP Case Stacking Error Message is one of the messages that could have multiple root causes. Here is a list of general guidelines you should try after you receive the error message:
1. Check if your PIMS is at the latest version. If not, please install the latest patch. This is a known issue that was fixed.
... |
Problem Statement: Aspen HYSYS Amines fluid package is no longer supported by versions V10 and V11, however version V10 is still capable of using it but it will recommend to change the fluid package to Acid Gas. Since version V8.3 the Acid Gas Cleaning functionality was introduced to Aspen HYSYS, which offers expanded ... | Solution: When the user tries to open a simulation that is using DBR Amines in HYSYS V10, the following message will appear.
If the user accepts to change the fluid package to Acid Gas, it will automatically convert the fluid package into Acid Gas Chemical Solvents fluid package, and everything that was using the DBR... |
Problem Statement: Triple steps is only applicable for Single-Step (V10.0 or ealier) and Test (V11.0) mode, but not for Multi-Step or Calibrate mode. The noted is missed for DMC3 Entries Dictionary in DMC3 Builder or PCWS help document. | Solution: There's a note for DMCplus Entries Dictionary of entry STMVPATTERN:
But the note is missed for DMC3 Entries Dictionary of entry, we'll update the note in V12.0 release.
Keywords: Step Pattern, SmartStep, DMCplus, DMC3, Triple Step
References: None |
Problem Statement: Sample Macro: Automation of BLOWDOWN with VBA | Solution: As with other parts of HYSYS, BLOWDOWN can be accessed and automated with VBA code. The following example shows how users can access variables and results of a BLOWDOWN unit.
Private Declare Sub Sleep Lib "kernel32" (ByVal dwMilliseconds As Long)
Public Sub TestBlowdownProfile()
'assumes that there i... |
Problem Statement: How to perform a pump speed variation controller? | Solution: Aspen HYSYS allows the user to control different outpouts based on process variables. To perform a pump speed variation controller, please follow these steps:
1. On the Curves ribbon of the Rating Tab, enable the "Use Curves" option and select the desire Gas Fraction basis
2. Click in "Add Curve" and ente... |
Problem Statement: Why does the Rating tab of a heat exchanger is grayed out in Dynamic mode? | Solution: When the user is working in a dynamic simulation, Aspen HYSYS will grey out the information in the rating tab and now the crucial geometry and/or heat parameters will now be located in the Dynamics Tab. So, the user can make all the necessary changes of the heat exchanger and evaluate different scenarios.
Key... |
Problem Statement: Is possible to have multiple simulations linked to the same Aspen Simulation Workbook (ASW) file? | Solution: Once you have enabled ASW on MS Excel, you can link as many simulations as you need, following two approaches:
From Excel ASW ribbon | Simulations,click on the “+” symbol and browse for the desired file.
From the ASW Organizer | Configuration | Simulations, click on the “+” symbol and browse for the desired f... |
Problem Statement: How to plot the Residue Curves for a ternary mixture? | Solution: A residue curve describes the change of the composition of the liquid phase of a chemical mixture during continuous evaporation at the condition of vapor–liquid equilibrium (open distillation). Multiple residue curves for a single system are called residue curves map.
Residue curves allow testing the feasibil... |
Problem Statement: How to set an intermediate or final equation of a calculator as the target variable in a Design Spec and how to access to the Design Spec Target in a Sensitivity block | Solution: To set an intermediate or final result of a calculator as the target variable in a Design Spec, the Design Spec cannot access as it can be a Fortran expression. So, set it as a value is the simplest expression possible by defining the expression as a Parameter type since by definition it is a value that could... |
Problem Statement: Is it possible to automap and transfer only material streams data from Aspen HYSYS to ABE using the Web Mapper? | Solution: It is not possible to automap and transfer material streams data to ABE using the Aspen HYSYS Web Mapper if the model only contains material streams and no unit operations; although after following the standard workflow to transfer data to ABE no warning / error message will pop up and the user will get a not... |
Problem Statement: How can I control the size of a text box in order to correctly fit the space of a text? | Solution: As mentioned in the article How can I add text to the PFD? the user can insert a description of the process in the PFD but in some cases the default size of the text box doesn't fit the text.
To size the text box, follow these next steps steps:
1. In the Flowsheet/Modify Tab, click Size
2. Click on the desir... |
Problem Statement: What are specific examples that are a good basis for employing custom attenuation for a device or fitting? | Solution: By default, the Override Standard Attenuation and Custom Attenuation check box is cleared.
The Custom Attenuation field provides additional flexibility for situations where the geometry of an unit operation is approximated / modeled in a way that does not fully capture the AIV attenuation for the actual con... |
Problem Statement: How to figure out the required tables in Aspen Petroleum Scheduler (APS) and Aspen Refinery Multi-Blend Optimizer (MBO) models in the version you run? | Solution: In APS/MBO, the required tables to construct a complete APS/MBO model are listed in TABLENAMES in OrionDBGen.mdb. To get the list of tables specifically for your version, you can go to C:\Program Files (x86)\AspenTech\Aspen Petroleum Scheduler and search for OrionDBGen.mdb.
V11 APS/MBO OrionDBGen.mdb>>TABLENA... |
Problem Statement: Are the new Column Analysis ‘Custom Trays’ for rating calculations available in Aspen HYSYS V11? | Solution: Custom trays for rating calculations are only available in Aspen Plus V11 for RadFrac columns and not available in Aspen HYSYS.
To know more about custom trays in Aspen Plus V11, please refer to KB Article: ‘RadFrac with Column Analysis now supports custom trays for rating calculations.’
Keywords: Custom Tra... |
Problem Statement: What generates the message "The required relieving capacity is less than 30% of the rated valve capacity" and how do I fix it? | Solution: This warning is caused by an over-sized relief valve (i.e. installing a valve that is significantly larger than it needs to be for a particular scenario) and this condition can result in the valve opening and shutting rapidly, which can damage the valve and/or valve piping. It is a common and well-accepted be... |
Problem Statement: When trying to use the workbook to see the composition of every single component, the compositions of some components are reported as XXX instead of showing a value as you can see in the following image: | Solution: By default in Aspen HYSYS, the Workbook groups all the component lists of all Fluid Packages in one general component list known as Master Component list. Therefore the workbook will report a composition as XXX for the components that are not loaded to the fluid package that is used by the stream.
If you loo... |
Problem Statement: Why does Petroleum Assay characterization result for FlashPoint not match with my Whole Crude input even though I select "Match Whole Crude Properties" option? | Solution: The algorithm to match bulk properties shifts the property curve up and down in order to find the solution. This can sometimes temporarily bring the values outside the predefined limits for the property. This issue often occurs because the Max. value used to indicate the property's upper limit is not high en... |
Problem Statement: Does AFSA calculate an adjusted Likelihood of Failure(LOF), etc. for "Custom Curves" & "Custom Attenuation" in AIV calculations? | Solution: LOF applies exclusively to Energy Institute calculations, all other calculations have a binary accept/reject choice based on an SPL threshold (fixed for API method, variable for Carucci-Mueller and custom curve). This applies for custom curve option as fixed threshold value which comes from the D/t vs. dB cur... |
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