question stringlengths 19 6.88k | answer stringlengths 38 33.3k |
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Problem Statement: Where can I find the Aspen Process Control Web Server What-If simulation files? | Solution: Go to :\ProgramData\AspenTech\APC\Performance Monitor\App\AppName folder where a *.ccf and a *.mdl file are listed*.
* The paths are for a Windows 2008 64-bits Server. If other OS is used follow the equivalent path.
Note: The What-If Simulation feature is available only for Aspen DMCplus controller applicatio... |
Problem Statement: What are some considerations when configuring an online server using a Process Data connection? | Solution: The Aspen Process Controller can read/write plant data using either Cim-IO, OPC-DA, or Process Data.
For Process Data to work properly, someone needs to logon to the APC online server as an administrative user (not a normal user) and configure the Process Data source (using the ADSA Client Config Tool). The P... |
Problem Statement: If you have both Aspen Simulation Workbook and PI Datalink software (version 3.x or earlier) installed at the same time, then date values retrieved by PI Datalink software from Excel can sometimes become corrupted. | Solution: Upgrade the PI Datalink software to version 4.x or later. This will resolve the conflict.
Keywords: PI Datalink Software Conflict
References: None |
Problem Statement: What is the best way to move or rename a simulation model associated with Aspen Simulation Workbook? | Solution: When a simulation variable is added to ASW, the choice of which simulation is associated with that variable cannot be changed.
If you delete the associated simulation from Variable Organizer, then the variable link to the simulation will permanently be lost and cannot be re-established.
Even if you later re-a... |
Problem Statement: When we install Aspen Process Controller Builder (APC Builder) using a stand alone license file for DMCplus desktop tools, we will be requested to install IP.21 client softwares and CIMIO as follows:
Aspen APC Builder requires Aspen Calc
Aspen APC Builder requires Aspen Calc Service
Aspen APC Build... | Solution: We can install APC Builder using DMCplus desktop tools stand alone license without Aspen Calc, Cim-IO and SQLplus client licenses.
Keywords: APC Builder, installation, Aspen Calc, Aspen SQLplus, Aspen Cim-IO, Aspen Process Data
References: None |
Problem Statement: How do I correct the runtime error 462 while simulating CCF and why do I get runtime error 462 (Remote server does not exist or is unavailable) while validating CCF file in Aspen DMC plus Builder?
In some situations, DMCINI Failed error-15122 also appears while validating CCF.
Or | Solution: In CCF file, the tag name is more than 16 characters. In such situation, we get the Run time error 462.
Also, in few scenarios, we may get a message Error DMCINI failed-15122.
To avoid/ overcome this problem, the length of the tag name should be kept within 16 characters.
Keywords: Run time error
Error 462
Er... |
Problem Statement: Missing results variables are a common source of problems in ASW. This can be especially confusing because the symptoms of this problem (unpredictable behavior by ASW) don't always make it obvious to many users that the results variables are the cause of the problem. | Solution: Results variables can cause problems because they don't always exist in a simulation.
When you run a simulation, a new set of variables is added for the simulation run results (e.g.output_temperature).
You can then add links to these variables in Variable Organizer.
If you then re-initialize the simulation or... |
Problem Statement: What are the pressure drop, mass transfer coefficient, heat transfer coefficient, interfacial area and hold up methods used when Sulzer packings are used in Rate-based simulation? | Solution: When Sulzer is selected as the Vendor in the Pack Rating Specification input form, the pressure drop is automatically defaulted to Sulzer's proprietary calculation. It is not necessary to select the pressure drop correlation and neither can it be over-written by other methods.
In Aspen Rate-based distillation... |
Problem Statement: When trying to add more output variables unto an existing table in Aspen Simulation Workbook, the finish button disappears. | Solution: The reason why the Finish button gets disabled is because there are conflicts in the table range in which the new variables would go. When adding more variables to a table, ASW checks to see if there is enough empty space on the spreadsheet to add these variables. If there isn't enough space it issues an err... |
Problem Statement: Is it possible to substract a transformed Vector in DMCplus Model? | Solution: When one tries to substract a transformed vector in DMCplus Model, one can see that the calculation is not done as expected. this is a a by-design behavior reported in CQ00564963
Why is not the calculation executed?
Transformation vectors are calculated on the fly for display purposes. Transformation feature ... |
Problem Statement: Jump Start: Aspen Simulation Workbook in Aspen Plus V8 | Solution: Aspen Simulation Workbook (ASW) is a powerful tool that allows Aspen HYSYS and Aspen Plus simulation experts to easily create a clean user interface for their models in Microsoft Excel. This makes it easy for other users to manipulate complex Aspen HYSYS and Aspen Plus simulations without being intimately fa... |
Problem Statement: Why do I get Error (-1) saving CCF to disk, while saving a controller configuration file (CCF) using Aspen DMCplus builder when selecting the option to not validate using DMCplus Simulate? | Solution: This error is related to permission of the folder C:\ProgramData\AspenTech\APC\Online\app\controller folder, where the CCF is always placed for loading a DMC plus controller online. The ProgramData directory in Windows requires that the user writing to this directory has Administrator privileges.
Hence, if yo... |
Problem Statement: Is it possible to import an existing DMCplus Model DPP file into APC Builder? | Solution: Currently there is no direct way of importing a DMCPlus Model project file (.dpp) into an APC builder project. Here is a list of recommended steps for converting a DMCPlus project file into a APC builder project.
1. Export items from a .dpp file and then import them into a APC builder project. The follo... |
Problem Statement: Sometimes, a user has distillation columns in Aspen HYSYS model, and need a way of checking the convergence status of columns from Aspen Simulation Workbook. Is there an indicator of convergence status for Aspen HYSYS subflowsheet? | Solution: For a column subflowsheet, you can access its Boolean attribute CurrentStatus from ASW Variable Browser. When a column is converged, its CurrentStatus has a value of 0 and status of Calculated. If a column is unsolved, the value is 1 and status is Calculated.
In the attached screen shot, the CurrentStatus f... |
Problem Statement: How is the Error vector calculated when running Predictions in an Aspen DMCplus Model? | Solution: The Prediction Error vector that is calculated by DMCplus Model is the differentiated version of the CV prediction error (Prediction - Raw Data). The Prediction Error vector there therefore represents the change in the prediction error with each passing cycle.
Most APC engineers called the difference between ... |
Problem Statement: Is it possible to preserve the case references/links in the model file edited using SmartAudit? | Solution: DISCLAIMER: ThisSolution requires a modification to the standard files created by the DMCplus products, which, of course is not officially supported. Please use this program at your own risk and keep a backup copy of any files modified.
This software is not supported by AspenTech. Please perform your own test... |
Problem Statement: What is the dot on the Aspen DMCplus model frequency domain uncertainty plot? | Solution: The dot shown in the Aspen DMCplus model frequency domain response uncertainty plot is an X-axis (frequency) indication for the first-order time constant, roughly 63.2% of the step response gain.
The time to 63.2 % of the step response is the time constant of first order response.A
The dot is the rough es... |
Problem Statement: The reinstall repeats itself several times before the Office document
(in this case, Excel) finally opens. | Solution: Update Microsoft Office 2003 at support.microsoft.com and install kb907417 or click on the link below.
This update fixes a problem that may prevent managed add-ins, smart documents, and smart tags that are created by using Visual Studio 2005 from working in Office 2003.
http://www.microsoft.com/downloads/deta... |
Problem Statement: Aspen DMCplus Modernization and Streamlined Workflow | Solution: V7.2 delivers full Aspen DMCplus Controller functionality in the new .NET control environment.
Drag and Drop Models (with transform information) directly from Aspen DMCplus Model
For large applications, Aspen DMCplus Model is still the recommended environment for building and archiving controller models. Mode... |
Problem Statement: What does the following error message mean, and how do I resolve it:
a??Build Error (-1) saving *.ccf to disk. Check the file and folder permissions as well as disk space. Try saving to a different file name or running this program As Administrator. Also make sure the file is not write protected or ... | Solution: This warning message appears in V7.3 CP4 and V8.0 when there are saving issues.
Check the permissions on the individual files as well as the directory folder (right click Properties, then General and Security tabs).
Windows 2008 allows you to set the privilege level for programs to have them Run as Administra... |
Problem Statement: What to do when DMCplus Model gives the warning message: Unacceptable system date formate. Use application default format? | Solution: DMCplus Model is particular about the format of the system date format. You can check the system date format in Region and Language settings from Control Panel.
It is suggested to use the default setting, which is the following:
In the case where the message is entered, the default time format of Model is use... |
Problem Statement: This MS installation is smart and will install these components to the drive which has larger available space.
DMCPlus builder is the one need VBA and MS office component. This happened on AMS products which need VBA component. | Solution: the workaround could be either
1. Make your c drive's available space bigger than others and install Aspen software.
2. Delete MS office component in other drive, make drives which has more available space then C drive to read-only, run DMCPlus builder. Then the office component will install to C Driv... |
Problem Statement: Is it possible to add ascii strings in the DMCplus Calculations Section? | Solution: No, the DMCplus Calculation engine does not support strings (text) in the calculations.
The following message error can appear when saving the ccf:
Checking the CCF with DMCplus Simulate.
Error in formula: Character variable not allowed: {variable type:variable name
Preceding error occurred in this Statemen... |
Problem Statement: SharePoint Foundation 2010, a free download from Microsoft, is a prerequisite for installing aspenONE.
SharePoint has its own prerequisites which are automatically downloaded if your server has internet connection.
The aspenONE installation and configuration guide provides a method to do the SharePo... | Solution: You can download the script from thisSolution.
Keywords: aspenONE SharePoint prerequisite installation internet
References: None |
Problem Statement: The interface for setting design specifications in Aspen Plus is different than for other types of variables. For a particular Aspen Plus object, the user can set none, one, or many design specifications. It is not obvious how to successfully set these design specifications from Aspen Simulation Work... | Solution: There are two scenarios that can be considered:
(1) There is a set group specific design specification values that you are going to be modifying from ASW
For example, consider if you want to change the mole purity of a column. In this case you need to:
(A) In Aspen Plus, add a Design spec to the column ... |
Problem Statement: How do I enable GMULTs for APC Builder controllers? | Solution: Follow this procedure:
- Right click on Model block and select Edit | Gain Multipliers to open the Edit Gain Multipliers window.
- Enable the check mark on the Use gain multipliers option located at the bottom-left of the window.
- Enable the check mark on the required columns and configure ... |
Problem Statement: How do I install and configure Aspen Remote Simulation Service for version 2006.5? | Solution: Quick Guide for installing Aspen Remote Simulation Service 2006.5
1. Installation
Please run the installation from DVD1 as with other Aspen Products.
When selecting the installation mode, choose standard installation.
Select Aspen Remote Simulation Service from the Products listing.
Please remember th... |
Problem Statement: Where are simulation files uploaded to the aspenONE Drive saved? Are these files saved on a server located in the user’s network or on a server provided by AspenTech? Can anyone else outside the company access to these files without the users authorization? | Solution: The simulation files are saved through the aspenONE Web Server environment (it has to be installed on any PC/server on the network, accessible via URL) which is a unified web and mobile environment for searching, sharing, viewing, interacting, and collaborating using the content produced by AspenTech’s Engi... |
Problem Statement: Aspen Simulation Workbook add-in defines two methods that can be invoked from your VBA code to run the simulation linked to ASW. The synchronous version, ASWRunSynchActive, will hold the execution of the calling thread until the solver finishes the calculations, while ASWRunActive will return control... | Solution: illustrates how it can be done. The example code refers to Aspen HYSYS but the concept is analogous in Aspen Plus as well. Solution
There are two options to check if the HYSYS case linked to ASW is still solving: using “SolverIsRunning� property directly from the ASW simulation object (OSESimulation.Solv... |
Problem Statement: I cannot click the Enable button because it is grayed out. Why? | Solution: If the Enable button is not available and the Organizer button is, this means that you do not have a Workbook open in your Excel Spreadsheet.
You need to have a Workbook open in your Excel Spreadsheet before the Enable button will become active.
To open a Workbook select the New command from the File menu.
Ke... |
Problem Statement: Failed to commute license SLM_XXX_XXXX because of error 77. Not enough commuter licenses available at this time to check out the requested keys. | Solution: Verify if the LServOpts environment variable -com percentage option is set and if the setting is preventing the user from commuting a license.
Commuter licensing uses the same license strings as other network licenses. To ensure that not all licenses are used up by commuters, the -com percentage option is s... |
Problem Statement: This Knowledge Base article provides steps to resolve an issue where a non-Admin IE user gets a white screen (Home tiles are not shown) when accessing aspenONE Process Explorer.
Details:
IE experiences an Access Denied when our aspenONE Process Explorer (A1PE) scripts access Local Storage by a non-Ad... | Solution: The issue is caused by a problem with the settings on the C:\Users\username\Appdata\LocalLow folder in the user profile.
Each folder on your computer has an integrity setting. More information about the purpose of this setting is here: http://msdn.microsoft.com/en-us/library/bb625964.aspx
The integrity sett... |
Problem Statement: How do I use conditional formatting in Aspen Simulation Workbook (ASW)? | Solution: One example user can use conditioning formatting in ASW is to automatically set the user specified value as blue color. Here are the procedures:
1. Procedures to create tables are described inSolution 135936.
2. Once the table has been created, go to Home ribbon, and under Conditioning Formatting, select New ... |
Problem Statement: I have selected a few variables from the Aspen Simulation Workbook to create a table. I have then tried to insert a row on the spreadsheet inside the table using the Excel Insert row command. After the change, the variables are no longer connected to the simulation. | Solution: You may only modify the Aspen Simulation Workbook table using the right mouse click menu, Simulation Workbook Tables. If you attempt to modify the table not using that command while Aspen Simulation Workbook is enabled, you will get the following notice to inform that the table is disconnected.
If the Asp... |
Problem Statement: User has installed Aspen HYSYS V8.3 and would like to use the corresponding version of Aspen Simulation Workbook. | Solution: There is no Aspen Simulation Workbook (ASW) V8.3. The users can use the ASW V8.2 with HYSYS V8.3. In order to use ASW V8.2 with HYSYS V8.3, users need to download and apply the patch ASW V8.2 CP1 fromSolution ID 137887.
Keywords: Aspen Simulation Workbook, ASW V8.3.
References: None |
Problem Statement: What's the meaning of the APC User Defined Entries Default IO Flags? | Solution: Find below further information:
DefaultIOFlags
IsInput
If true, the entry value is refreshed from an IO tag (if one is configured) at runtime. IsConstant and IsInput cannot both be true.
IsConstant
If true, the entry is not changeable at runtime. Can be used in conjunction with IsPublish. IsConstant and I... |
Problem Statement: APC Builder slices vs. DMCplus slices. What are the differences in each software? | Solution: Aspen Process Controller Builder (aka APC Builder) is the newest interface and technology developed by AspenTech. APC Builder wraps up legacy DMCplus products (Such as Model, Build, Simulate, Smart Audit; along with Extract and Collect commands and APC Manage for online deploying), making this product a singl... |
Problem Statement: Which EPA regulations are Pharmaceutical MACT equations based on? | Solution: Pharmaceutical MACT equations are based on subpart 40 CFR 63.1257(d)(2)(i), this section last 7 pages Here is break down of each equation with a more detailed subpart specification in the federal register. The pharma MACT is in the same subparts of the regulation, and each Batch Plus equation is correlated to... |
Problem Statement: User variables are missing when imported to Aspen Simulation Workbook. | Solution: To display User Variables in Aspen Simulation Workbook follow the steps below.
1. Create a spreadsheet in the HYSYS case.
2. Import the User Variables using the drag and drop method in the spreadsheet.
3. You can then copy the User Variables from the spreadsheet and paste them in Aspen Simulation Workbook org... |
Problem Statement: While installing aspenONE, the installation is interrupted by a Microsoft Windows warning dialog “Close Programs to prevent information loss – Your computer is low on memory. Save you files and close these program:”, followed by a list of programs. | Solution: Open the task manager to check how much physical memory is available. The hardware requirements to install aspenONE call for a minimum 8GB of memory.
If there is enough available memory, the memory dialog also appears when Windows detects that a program is using too much memory or it thinks it has a memory l... |
Problem Statement: How do I add a description column or customize column when creating table in Aspen Simulation Workbook (ASW)? | Solution: 1. Click on Column Customization in the Aspen Simulation Workbook Organizer
2. A Customization table will appear and user can select the Description column header to be added in the table by dragging and drop beside the other column header.
3. User can also remove the header by dragging the parameter name f... |
Problem Statement: How do I restart the Adaptive Modeling processes when showing Queued for a case?
Background
Adaptive Modeling uses IP.21 External Tasks TSK_ADAP, TSK_ADM1 and TSK_ADM2; each one runs a separate AutoModeling.exe process. Their associated IP.21 Definition Record is AW_ADAPMgmDef, which consists of su... | Solution: The following procedure is to perform a “clean restart” of the Watch (IP.21) processes related to Adaptive Modeling.
1. On the Watch server open InfoPlus.21 Manager.
2. In the Running Tasks section (bottom left) locate TSK_ADAP and stop it using the Stop Task button. Repeat for TSK_ADM1 and TSK_ADM2.
... |
Problem Statement: How do you use automation in Aspen SImulation Workbook (ASW)? | Solution: Attached is a guide to using automation in Aspen Simulation Workbook (ASW).
Aspen Simulation Workbook (ASW) enables you to create an Excel interface to your simulations. With ASW you can run your simulation, get/set variable values in Excel cells, and more. In some case, you might want to add some additiona... |
Problem Statement: How can I select which Aspen Plus version to use with Aspen Simulation Workbook (ASW)? I have multiple versions of Aspen Plus in my PC and I would like to select which one to use when running a simulation from the ASW. | Solution: From Aspen Simulation Workbook, one can control the version of the simulator to be launched.
Please go to the Aspen ASW Add-in in Excel and open the Organizer; then go to Configuration | Simulations. From Version Option in the pane on the right, it is possible to specify (please see the print-screen below):
`... |
Problem Statement: When changing the application mode of a DMCplus controller to Calibrate you might encounter one of these messages:
On the Online tab of PCWS: Test Agent Not available. Add this application on Aspen Watch to enable advanced features.
On the History tab of PCWS: “Application name” Does not support Adap... | Solution: 1. Open your ccf with Aspen DMCplus Build/Tools/Options and confirm that you have the STSTENB, AWENB and AMENB entries selected:
2. Go to APC Manage and view if the last time you loaded your controller it contained the above options if not you will need to reload your controller.
3. Confirm if you... |
Problem Statement: How do I resolve the error message ‘Select one of the cells in the existing scenario table to run all active scenarios’? | Solution: This error message appears when user clicks on the Control Button Macro set up to run scenario table.
To resolve this error, user needs highlight a cell in the scenario table to be run before clicking to the Macro Control Button.
Keywords: Scenario table,ASW, Macro, Control Button, cell
References: None |
Problem Statement: A backup feature is available in ASW V7.1 with CP2 or 2006.5 with CP5. This feature will allow user to save a backup file of the current working links. In the cases of unexpected loss of links, this backup file can be used to re-establish the links between ASW and the simulator, such as Aspen Plus or... | Solution: First, make sure that the proper accumulative patch is installed for the ASW installation your computer.
A couple of options are available for backing up your work in Excel. A convenient tool button is available in Aspen Simulation Workbook Design menu group. A user can save the current work by clicking on th... |
Problem Statement: Changes in Process DataA IO source for Aspen Process Controller V8.0. | Solution: Starting V8.0 there has been changes in the connection options for Process Data.
Here is a brief explanation for those changes:
A? Connect as
Here you choose to connect to the Process Data server anonymously (by selecting Local system account), or as a particular userid (by selecting This account).
Th... |
Problem Statement: Getting error message 'Failure to connect to Simulation', when activating Aspen Plus Simulation in Aspen Simulation Workbook | Solution: This issue can come up if multiple version of Aspen Plus is installed on your machine. Please follow the steps below to successfully activate the Aspen plus simulation in Aspen Simulation Workbook (ASW). There two parts to check this and activate the simulation.
Part I:
1.First of all try to open the Aspen pl... |
Problem Statement: How do I see the online calculations for an APC application? | Solution: There is a known issue with the ReturnValue parameter in the input / output calculations. ReturnValue should only be used in formulas since the validation silently fails if you are using this parameter on the calculation or mapped to an entry. “CQ00504292 Calculations do not appear online� is targeted for... |
Problem Statement: What is the significance of ECE in Engineering Units parameter for MVs in an Aspen DMCplus controller? | Solution: MV External Targets (ET) have ranks and ECEs just like CV ETs. The ECE and Rank parameters for an MV are only applicable when an ET is specified for the MV.Â
In case of an infeasibleSolution where the DMC engine is unable to meet an MV ET, the DMC engine uses the MV Rank and ECE to determine the extent of st... |
Problem Statement: How do I add a prop-set variable into Workbook Organizer?
What is the easiest way to add a variable or prop-set variable into Workbook Organizer in Aspen Simulation Workbook? | Solution: Copying the results of a variable, including prop-set variable, from the stream results and pasting it in the Workbook Organizer is the easiest way.
To include prop-set into stream results in Aspen Plus, go to Setup || Report Options || Stream (tab)|| Property Set (button) || take the prop-set(s) to the right... |
Problem Statement: What is the procedure to disable Test Agent on select variables in the controller? | Solution: Aspen DMC3 allows users to automatically monitor step test for the controller and generate alarms, reports and build model for the variables configured in Test Agent. By default, the software automatically selects all variables in the controller when Test Agent is enabled. However, if in the course of step te... |
Problem Statement: Running a Pressure Relief simulation I get the following error:
Pres-Relief PR-1
*** SEVERE ERROR
THE COMPONENT NAMED AS THE PAD GAS COMPONENT
CANNOT BE THE ONLY COMPONENT IN THE VESSEL
*** SEVERE ERROR
PRESSURE RELIEF ABORTING BECAUSE OF INVALID SPECIFICATIONS. | Solution: For a pressure relief you cannot have a single component that is both the vessel content and also the pad gas.
To avoid this error use a different component as the pad gas, such as Nitrogen
Keywords:
References: None |
Problem Statement: How are the Advanced Vapor Emission Model entries used in the Vapor Emission Model? | Solution: The three entries on the Advanced Vapor Emission Model tab are used as follows:
'The leak rate': This is only used by the Vacuum Operations or Vacuum Systems models and allow the user to specify the air leak rate into the system. The specification of leak rate in any other model will not result in any change ... |
Problem Statement: How to create a custom table template in Aspen Simulation Workbook? | Solution: Aspen Simulation Workbook allows to create quick table based on customized pre-configured template. Follow the steps given below to create your own template:
1. Open the Organizer, and then click Create Quick Table button
2. Select <Manage Templates...>
3. Click New on the Manage Table Templates form
4. Give ... |
Problem Statement: Sometimes, a user need to determine if an Aspen HYSYS solve has completed. How can this be done? | Solution: There are three cases to consider:
(1) Performing a Standard Aspen HYSYS Solve (not involving HYSYS Optimizer)
Use the ?SolverIsRunning? property of the simulation object to determine when the solve is completed.
See attached code for examples of how to do this: DetectWhenHysysSolveDone_20110228a.xls (V7.2 ... |
Problem Statement: Why does importing an Aspen DMCplus application (a .ccf file) into Aspen APC Builder V8 generate errors, but not from Aspen DMCplus Builder? | Solution: While importing a ccf, to APC Builder V8, the following errors were generated:
Error 1 --
This is remedied by declaring the variable in the ccf,
added the following line to the CCF under [IND:42FC201SV]:
.GMULT038~~~LOCAL~~~R4~~~1.0~~~
Error 2 --
There is no error when saving the .ccf in V8.0
After clicki... |
Problem Statement: What does the value (-9999) Bad Values - too long for interpolation mean in the Aspen Adaptive Modeling Bad Slices Summary log? My graphs seem to be okay. | Solution: To prevent this message, the data available for the Adaptive Modeling must be verified. Please refer to KBSolution 122675: Is there a way to generate a CLC or extract a list of vectors from Aspen Watch?
If the extraction is successful and shows data available for the period of time, the quality of that data h... |
Problem Statement: Is it possible to export future MV moves calculated by the engine for APC Builder applications? | Solution: It is not possible to look up the parameters associated with the future MV moves directly in APC Builder interface. However, it is possible to see the calculated values by generating a debug print file (.PRT) or using the PCWS plots when the controller is online.
This applies to all three types of APC Builder... |
Problem Statement: We have an Aspen Plus model that uses a .dll file (via an opt file specification in the .bkp file).
Aspen Simulation Workbook (ASW) can never find the .opt (or the .dll) file since they are not part
of the embedded .bkp file. How does one do this? | Solution: Embed the compound file (.apwz) when the Aspen Plus bkp model requires external files such
as Fortran objects (.obj), DLLs (.dll), apmbd (binary embedded component from Excel calculator
blocks), and exchanger design EDR files. The Aspen Plus compound file should have embedded
all the necessary files to run (d... |
Problem Statement: How do you import a dataset, in a text file format, to DMC3 Builder? | Solution: In order to import data from a text file in DMC3 Builder you have to put the information in a tab delimited format. The information in the text file should follow the following order:
(1) In the first line you can put a description of the data set.
(2) In the second line the name of the vectors (time and nam... |
Problem Statement: What is the behavior of the Save changes options available in the Configuration Workbook section of ASW organizer? | Solution: The behavior is the following:
1. Save Changes to Embedded Simulation Cases and Save Changes to Linked Simulation cases save automatically bkp, apw, apwz, hsc, etc., right before deactivating the simulation.
2. Since embedded simulations become part of the workbook, when saving ASW file, the changes a... |
Problem Statement: How to change the version of the simulator application (e.g. Aspen Plus, Aspen HYSYS) that is to be used by Aspen Simulation Workbook to open a model? | Solution: ASW by default will open latest version of simulation that you have installed, but if you have multiple versions of Simulation software (Aspen Plus or Aspen HYSYS) then you can decide which version of simulation you want to open by setting up an option in ASW Organizer.
You should change the value for ?Versio... |
Problem Statement: What does Path Substitution mean in documentation What's New in V7.3? | Solution: Go to the Model Variables page, and click on column customization. You will see the customization list pop up at the bottom. Look for ?Path?, select and drag it place on the column.
Refer to Knowledge BaseSolution 135937 to customize column in ASW.
Under Path, you will see Top.appModel.FlowSheetObjects.Stream... |
Problem Statement: Is there a simple way to add variables from Custom Tables to Aspen Simulation Workbook? | Solution: Variables selected in Aspen Plus Custom Table will not appear when the user wants to link these to Aspen Simulation Workbook after copying and pasting to the Organizer Table.
There is also the case when the user will select variables from the Browser in the ASW Organizer and notice that where a value was expe... |
Problem Statement: How do I assign a macro in Aspen Simulation Workbook (ASW) to run a Scenario Table? | Solution: User can set up a Macro in ASW to automatically run a scenario table when clicked. The steps below illustrate how to set up such a Macro.
1. Set up the scenario table in ASW. Refer to KbSolution ID 129929
2. Go to the tab for Developerà Insertà select the form Control Button
3.Place the Control Button i... |
Problem Statement: Jump Start: Aspen Simulation Workbook in Aspen HYSYS V8 | Solution: Aspen Simulation Workbook (ASW) is a powerful tool that allows Aspen HYSYS and Aspen Plus simulation experts to easily create a clean user interface for their models in Microsoft Excel. This makes it easy for other users to manipulate complex Aspen HYSYS and Aspen Plus simulations without being intimately fa... |
Problem Statement: I have created a design spec which is using some fortran statements to evaluate the target value. How can I display the value of the intermediate variables used in my fortran code? | Solution: You can add a WRITE statement in the fortran code to write the value to the control panel, i.e.:
C12345*
WRITE(*,*) X, Y, Z
This will write the values of X, Y and Z to the control panel. If you want to make the message more user-friendly, you can use a format Statement
C12345*
WRITE(*,10) X, Y, Z
10 FORMAT(... |
Problem Statement: I would like to review the NIST experimental data used to regress the NIST-TRC databank. Is it possible to do so from Aspen Plus? | Solution: The data used for the NIST-TRC databank is provided in the NIST ThermoData Engine (developed by the NIST Thermodynamics Research Center). AspenTech has provided the parameter regression results for much of this data in the NIST-TRC databank. However, users can use the experimental data to regress their own pa... |
Problem Statement: I have a Dry step that is not calculating the emissions out of the condenser correctly. I would like to use the MACT Air Drying model. When I choose this model, I get the uncontrolled emissions coming out as the total amount of liquid dried off, as expected. However, the amount coming out of the cond... | Solution: In general, the air dry models should not be used with control devices. The reason being that the emission models are not based on the saturation of non-condensables, but are instead a simple mass balance of the initial an final contents. The idea of a drying emission model based on mass balances comes from t... |
Problem Statement: When trying to edit the attribute SFRAC for a stream containing polymers, the following message is displayed:
`Cannot create spot to store value?.
The same problem occurs when trying to edit the attribute SFLOW.
How to avoid this problem? | Solution: The problem is caused by incorrect component specifications. You should first define the segments in the Components | Specifications tab before trying to enter the Component Attributes of the process streams. The segments in the Data browser | Components | Specifications | Selection should be specified as 'Se... |
Problem Statement: Is it possible to check the simulation time in Aspen Plus? | Solution: One way you can check the simulation time is by going to the History file. Go to the main menu and click on View/History or press Ctrl+Alt+H:
If you scroll down on the history file you will find the time it took for the simulation to run:
Keywords: CPU, model
References: None |
Problem Statement: Which physical and chemical solvents can be used for CO2 removal modeling in Aspen Plus? | Solution: Physical solvents
Methanol (Rectisol?)
DEPG (dimethyl ether of polyethylene glycol) (Selexol?)
NMP (N-methyl 2-pyrrolidone) (Purisol?)
PC (propylene carbonate)
Corresponding example files are available in below path
C:\Program Files\AspenTech\Aspen Plus V7.X\GUI\App\Physical solvents
? Chemical solvent sy... |
Problem Statement: Do we still publish the OLI documentation PDFs anymore? | Solution: No, the updated version of the content from these files exists in the Aspen OLI help file. The help is provided with the accompanying product from OLI when users install it. Alternatively, it can be downloaded fromSolution 132795.
Keywords: None
References: None |
Problem Statement: VB6 is being phased out from the AspenTech products. Does this have implications for the Excel VBA interfaces built as interfaces for Aspen Plus and ACM models? Will automation for V7.2 and beyond still support Excel VBA? | Solution: Not to worry, VBA and VB6 have very different applications.
All VBA scripting and automation will continue to run and continue to be supported.
In Aspen Plusr, we only support VB6 forms for customizing native Aspen Plus models.
In Aspen Custom Modeler (ACM), custom user forms using VB6 will not be offi... |
Problem Statement: There is no emission given even when the organic solids is heated over the melting point It is possible to calculate air emission for solids heated over the melting point? | Solution: Generally Batch Plus operations do not handle phase transitions. Therefore, even though the solid is heated over the melting point, the phase for the compound is still remains as solid. To workaround this, either change the Availability Conditions in the Pure Component dialog to Liquid, or specify that the so... |
Problem Statement: How is Available Phase for certain component determined? | Solution: There is Available Phase data under Availability Conditions in Pure Component Dialog. Before you bring any component into a Batch Plus project, this field is blank. You can confirm this by selecting a certain component and clicking the Info button to view the information. Once the component is added to a Batc... |
Problem Statement: What will Dis | Solution: in React operation do to solids in feed and products?
Solution
DisSolution in React affects materials that are either in the reactor or are fed to the reactor during the reaction. It does not dissolve products from the reaction. That is, solids fed to the React operation can be dissolved while solids produced... |
Problem Statement: Selected utility for emission control condenser, get warning about the utility not cool enough or temperature cross over. | Solution: The emission control condenser is assumed co-current, so to avoid the warning or error, the utility outlet temperature has to be below condenser outlet temperature - Delta T. Delta T is the temperature difference defined in the Preference/Global Default.
Keywords: Condenser
Utility
Emission Control
References... |
Problem Statement: I often lose track of how many Data Browser forms are open. Is there a way to show a tab for each one similar to Excel? | Solution: Use Workbook mode to help organize all of your open windows.
In Workbook mode, each window has a tab that appears at the bottom of the screen. This makes it easy to see which windows are open.
To use Workbook mode:
From the Window menu, click Workbook.
In V7.2, the following options are included in the Win... |
Problem Statement: How can I report a property-set in the profile results of blocks such as RPlug, Pipe and RadFrac? | Solution: To report a property as a profile variable you will need first to define a property set within the Prop-sets folder and then reference it on the appropriate block. The procedure is outlined below:
Navigate to Properties | Prop-sets folder within the data browser. Define a new property set by clicking the new ... |
Problem Statement: Sometimes there are multiple standard statements corresponding to one Batch Plus operation. For example, Charge operation might correspond to Visual Inspection, Weighing the Material and Charge. In such case, what modification can the user do to prevent the page break in Microsoft Word to break in be... | Solution: Clear the allow rows to break across pages box in Table | Properties | Row dialog, for each table in each standard statement.
If you highlight rows of a table and check Keep With Next in the Format | Paragraph... dialog, Word will keep those sets of multiple rows on the same page.
So, if you edit each standar... |
Problem Statement: Can Not Create New Project. | Solution: Check the following:
1. Is the working directory read-only? If it is, remove the read only status, if you still have problem go to next step.
2. Under Aspen Batch Plus install directory (by default, it is C:\Program files\AspenTech\Aspen Batch Plus 2004.1), there is a bin folder which store all th... |
Problem Statement: Why is the molecular weight of my stream containing a polymer or oligomer component calculated as if it only has one unit of monomer? | Solution: The Average MW displayed in the Stream Results is calculated from the parameter MW. The actual value can be reported by adding a Property Set with the property TRUEMW.
This will report the correct molecular weight considering the number of segments in the oligomer or polymer.
Keywords: segment, monomer
Refere... |
Problem Statement: How does the Energy Map button in the ConSep(Shown below) model work and when can we use this feature?
Is this option also available in the ConSep block in the new interface for versions V8.X? | Solution: The Energy Map button allows the user to select how to calculate the enthalpy of the lumped feed when component mapping is defined. It affects the quality of the lumped feed, and therefore the design results.
The quality of the lumped feed is defined as:
quality= (feed_enthalpy - v_enthalpy)/(l_enthalpy -... |
Problem Statement: Very large file crashes when opening in some machines. | Solution: It is possible that there are not enough resources.
By default Windows does not allocate enough resources, so some registry settings have to be modified. Here's a link to the article from Microsoft support:
http://support.microsoft.com/?kbid=126962
Here are the steps to fix the problem (BE SURE TO REBOOT ... |
Problem Statement: What Intellichem Synthesis Version Does Aspen Batch Plus Intellichem Interface Support? | Solution: Version 3.60 and 3.65.
The Interface format AspenTech and Intellichem has agreed upon is that
For recipes, it is BatchML
For materials, Aspen Batch Plus uses Intellichem's format.
AspenTech has been issuing Aspen Batch Plus/Intellichem interface according to this format from version 12.1. Intellichem supports... |
Problem Statement: The outlet stream mole flow is in lbmol/hr. Instead, I want mol/sec. My input for the stream mole flow is in mol/min, but I don't see a way to change the outlet stream mole flow units. | Solution: Follow the below steps to change the units of the outlet stream mole flow. This will change the units for ALL stream and block output.
1. Navigate to Data/Data Browser/ Setup/ Units-Sets, and double click Units-Sets folder.
2. Click New button to create a new set.
3. Enter an ID (Set1) and click OK.
4... |
Problem Statement: I have a simulation that is not using any external subroutine, however, after running I see the following error and the simulation stops.
*** SEVERE ERROR (FPFNDI.1) COULD NOT RESOLVE USER OR IN-LINE FORTRAN SUBROUTINE(S): SUBROUTINE ZZSENS IS MISSING
How can I solve this error? | Solution: This error happens in two situations:
i) If there is Fortran syntax inside a calculator block, design spec or a sensitivity analysis that cannot be interpreted by the engine, or
ii) If the program is forced to write all inline code in an external subroutine to be compiled.
The engine creates simple stateme... |
Problem Statement: How can a user access pre-defined petroleum Property Sets in Aspen Plus? | Solution: When opening a new simulation, select to open the Petroleum with Metric Units or Petroleum with English Units templates.
The templates can also be imported into an existing Aspen Plus simulation by going to File | Import. The templates can be found in the following directory:
C:\Program Files (x86)\AspenTec... |
Problem Statement: How can I delete a molecular structure in the Pure Components dialog after it had been accidentally imported from a *.mol file? | Solution: Since this is a situation rarely encountered, there is no Undo or Delete key available. The Delete button in the Pure Components dialog will actually delete the entire record of a given component.
To delete the molecular structure only, use Notepad (or any other editor of your choice) and create an emtpy *.mo... |
Problem Statement: How do I change the color of the unit operations in Aspen Plus? | Solution: There is no way to change the color of the unit operations that are already added to a simulation. To change the color of the icon you need to create your own icon library.
To create an icon library in Aspen Plus, go to the Library menu and click New. This will display a window to enter the library name and t... |
Problem Statement: What operations use use or change Particle Size Distributions (PSD) in Batch Plus? | Solution: Most of the secondary operations use or manipulate the particle size distribution:
Mix
Classify (separation)
Screen (separation)
Granulate (produce solid)
Mill (reduce size)
Pulverize (reduce size)
High-shear-Granulate (produce solid)
Extrude (produce solid)
Roller-Compact (produce solid)
Also, the following ... |
Problem Statement: How to navigate through the MS Access results database to find the material components (pure components and pre-defined mixtures) that make up the contents of a vessel at the end of each operation | Solution: When you open up the Microsoft Access database from the Results Menu/MS Access, there are 45 tables to choose from, and each one contains cross-refrences to one or more other tables.
To find the material components of a vessel at the end of an operation:
Start with EquipmentContents table. Within the Equipmen... |
Problem Statement: What is the effect of the Use the liquid reference state Checkbox on the Properties form in terms of Routes, Methods, and Models? | Solution: The route for DHL is set to DHL09 - no other changes take place.
Keywords: None
References: None |
Problem Statement: Could not lock file error message occurs when opening project. | Solution: It is common practice that a company restrict the normal user from accessing certain directories in the computer such as the drive where the application is installed. This might cause problems when opening a Batch Plus project.
This problem can be verified by:
Checking the attributes for the Batch Plus\bin fo... |
Problem Statement: What is the difference between On Demand and Automatic run? | Solution: On Demand runs are similar to Normal Interactive runs , with one main difference: In On Demand mode, you can run the simulation even when the flowsheet is not complete, as long as some part of the flowsheet is fully specified, and Aspen Plus will run the fully specified part.
In On Demand mode, Aspen Plus wil... |
Problem Statement: Can the insertion error polymerization kinetics be tracked in a simulation? | Solution: Insertion errors can be attributed from stereoisometric insertion and backwards monomer insertions.
Aspen Polymers does let you track atactic fraction (e.g., stereoisometric insertion errors) and head-to-head versus head-to-tail insertion (for monomers like styrene where the insertion can be backwards).
To re... |
Problem Statement: Total Volume is an attribute of a few equipment classes, such as tank, reactor, fermentor and crystallizer. Is the value used in simulation? How different is Total Volume from Capacity? | Solution: Tank, Reactor, Ferment, Crystallizer and Column equipment classes have an attribute called Total Volume. This attribute is interpreted to mean the sum of the capacity and the head volume.
IF it is non-NULL;
THEN it is used in the emission calculations;
Else IF this value is NULL;
THEN the attibute Capacity wi... |
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