question stringlengths 19 6.88k | answer stringlengths 38 33.3k |
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Problem Statement: How to convert equilibrium stages to actual trays for distillation column (Design) before performing Column Analysis? | Solution: Distillation column internal hydraulic calculation must be carried out to real trays instead of equilibrium stage as equilibrium assumption is never satisfied. (like transfer rates limitation, foaming, entrainment, etc.) These uncertainties are accounted through efficiency, which accounts for the departure fr... |
Problem Statement: How to change the number format of the stream result displayed in flow sheet window? | Solution: If display of any of the pre-defined or user-defined stream result property is activated in the flow sheet window, then format of the displayed digits & its unit of measurement can be formatted based upon user requirement.
Open the Set flow sheet display option window from Flow sheet Modify window. Alternati... |
Problem Statement: How do I increase data import chunk size when importing data set from Historian? | Solution: By default, Aspen Mtell imports sensor data in chunks of seven days. Starting in V11.1 Version you can change the chunk size by following below steps.
Log into Aspen System Manager and click on the Configuration tab.
In the left side panel, click on Data Acquisition.
Use the up and down arrows in the Overrid... |
Problem Statement: When testing the connection between the PI adapter and Aspen Mtell in System Manager, the user gets an error message that says ‘Detailed Error - 404.0 - Not Found'
In addition, under Application Pools the PI adapter has 0 applications.
This can happen when a second PI adapter is configured by dupli... | Solution: The Test button in System Manager tests to confirm that System Manager is able to find and load the Historian IIS page, and the 'Detailed Error - 404.0 - Not Found' error means that the page cannot be found. One of the reasons for this error message is that the web application is not fully published.
Pleas... |
Problem Statement: How to give users admin access to the Aspen InfoPlus.21 database? | Solution: 1. Open AFW Security Manager on the Aspen Local Security server, right-click the Roles to add a new role and give it a name
2. Right-click the newly created role and select Properties
3. Choose Members tab and add | advanced | choose the right domain | add the user account
4. Open Aspen InfoPlus.21 Adminis... |
Problem Statement: Why does the calculation in Aspen Calc shows -1.#IND as a result? For example, in Aspen Calc V10.1, we have a calculation using TagAverage function to calculate the tag average input value during the last 30 mins. The calculation formula is AVG=TagAverage(tag,now()-00:00:30,now(),0,0)
If there is n... | Solution: The -1.#IND means that it's an indeterminate form (such as 0/0). For example, the TagAverage function is the total tag value divided by the number of values. If there's no value in the last 30 minutes, it's being divided by zero, which becomes an indeterminate form (0/0).
In Aspen Calc versions prior to V10.... |
Problem Statement: ProMV Online Deployment Failure caused by model variable name changes or incompatible variable names (Case sensitivity and Special character) | Solution: IP.21 does not count case-sensitivity or spaces as distinguishing characters in tag names; while ProMV Online does count spaces as distinguishing characters in tag names.
If the Tag name in IP21 and ProMV does not match then user will not be able to deploy the model online.
Case 1: Model variable name ch... |
Problem Statement: How to set up Aspen Mtell security | Solution: 1. Open Aspen Mtell System Manager and navigate to the Configuration tab
2. Select Security Settings
3. Ensure that Security Enabled is unchecked, and that Aspen Mtell is checked.
Note: Do not check Security Enabled box until an Administrator is configured
There are two security options available in Aspen ... |
Problem Statement: How to deploy a model built on earlier version of ProMV Desktop to V11.1 ProMV Online | Solution: In order to use the ProMV Online application, all models must be exported from the same version ProMV Desktop application (e.g. for ProMV Online V11.1, all models must be exported from ProMV Desktop V11.1). For any PMVX project files built on an earlier version, complete the following steps to re-export the m... |
Problem Statement: If a tag (data record) in Aspen InfoPlus.21 receives a value (perhaps a positive value indicates that a machine is running and a 0 (zero) indicates that it is not) and we want to test that value, report on it, and cause another different record to receive that value (but only if it is a positive valu... | Solution: This example uses tags defined against either IP_AnalogDef or IP_DiscreteDef. The record we read from is called 'RECSource' and the one receiving the values is called 'RECTarget'. Please substitute appropriate record names for RECSource and RECTarget when using the SQLplus code and in the QueryDef record th... |
Problem Statement: How to import asset hierarchy information in Aspen Mell System Manager? | Solution: 1. Open Aspen Mtell System manager
2. Select the Equipment Tab
3. Select the Import object button in the above bar
4. Select Enterprises
5. Navigate to the file where the equipment sets are stored
6. Make sure all import fields are processed with no error messages and then click ok
7. Click on the import o... |
Problem Statement: Mtell System Manager prompts the following error upon Login (Enabled Mtell Security)
Error Message:-
(Default Exception Handler) Application Exception: Number must be either non-negative and less than or equal to Int32.MaxValue or -1. Parameter name: dueTime | Solution: This error message will prompts when Aspen Mtell Security Timeout is configured above 35791 minutes.
1. Launch Aspen Mtell System Manager
2. Click Configuration tab and select Settings and click Security Settings
3. Set the Timeout After Value below 35791 Minutes
4. Click Save
The changes will take affect ... |
Problem Statement: Why do I sometimes get the message that the molecular weight (MW) for a component is different than the molecular weight calculated from the formula? Which one is used?
The message is similar to the following:
MW AVAILABLE FOR COMPONENT GE IS DIFFERENT FROM MW CALCULATED
FROM FORMULA (A... | Solution: By default, the molecular weight.is calculated from the atomic formula. Molecular weight is available in all Aspen Properties databanks. However, the databank MW value may not contain enough significant figures for certain applications for which atomic balance is important, such as reactor modeling. Calculati... |
Problem Statement: Getting Vectors from an Excel Spreadsheet into Aspen DMCplus Model | Solution: Getting Vectors from an Excel Spreadsheet into AspenDMCplus Model.
1. Save file from Excel as a Tab delimited text file.
2. Invoke Aspen IQModel, new a project and click Specify Data, accept the default choice by click OK button.
3. Select the file at dialog Select a file with input data and click Open but... |
Problem Statement: Is it possible to use an Extract block with a petroleum assay? | Solution: The Extract block is used to model the rigorous counter-current extraction of a liquid with a solvent.
The NRTL and UNIQUAC binary parameters for water and pseudocomponents are intended for use in LLE calculations, as water and hydrocarbons tend to form two liquid phases. These interaction parameters are est... |
Problem Statement: Users might want to import their .atcgraphic files into Aspen IP.21 Graphic Studio in order to edit them and publish them into aspenONE Process Explorer. | Solution: 1. Open the .atcgraphic file in Aspen Process Graphics Editor.
2. Go to File à Export XML and select a location that you can remember.
3. Open Aspen Browser Graphic Studio and create a new project or open an existing project.
4. Go to File --> Import --> Process Explorer Graphic… . And select the file fro... |
Problem Statement: When using the following VBA code to open MS Excel, the Aspen Process Data Add-in does not work and the function returns error message #NAME?.
Set objExcel = CreateObject(Excel.Application)
Set objWorkbook = objExcel.Workbooks.Open(c:\temp\Test.xlsx)
objExcel.Application.Visible = True | Solution: When using VBA code to open the Excel application, it does not load the add-in by default. You have to write code to load the Add-in. Here is a code sample that works.
Set objExcel = CreateObject(Excel.Application)
objExcel.Workbooks.Add
objExcel.AddIns(Aspen Process Data Excel Add-in Functions).Installed =... |
Problem Statement: The naming convention for a group of tags has been changed in my sensor data source (for example, all '.F_CV' suffixes have been changed to '.PR.F_CV'), and as a result, I need to rename these tags in Aspen Mtell. | Solution: Follow the steps below to rename tags simultaneously. It is strongly suggested that you run through this process in your Test/Development environment first and only repeat in Production after a successful test run.
1. Open Aspen Mtell Agent Builder.
2. In the Machine Learning tab, select the equipment set ... |
Problem Statement: By default, a new trend document will be opened when launching the Aspen Process Explorer. How to avoid it when launching Aspen Process Explorer on MES V11? | Solution: Here is the procedure to avoid opening a new trend document on Aspen Process Explorer V11:
1. Open Aspen Process Explorer V11, click Process Explorer Options
2. Uncheck the Open new trend document on startup option
3. No new trend plot will be open after launching Aspen Process Explorer V11
This method is... |
Problem Statement: When using the Aspen Production Record Manager Administrator to back up the database, getting an error message B21BSC- 50002: Relational Database Error -2147217915: object was open, ect.... How to eliminate this error message? | Solution: The error B21BSC- 50002: Relational Database Error -2147217915: object was open means some batch units are still processing, so the backup process was denied.
Please try the procedure below:
1. Open Batch BCU Administrator and for each area stop all the unit processing. If a unit is processing, wait for it t... |
Problem Statement: I am trying to write a Fortran subroutine that can write to the control panel, history file and report file. I am following procedures outlined on Aspen Plus User Models manual, but code does not work as expected. | Solution: In a user written subroutine, the unit number for the history file and the report file are defined in PPEXEC_USER as USER_NHSTRY and USER_NRPT respectively. To redirect the output of a WRITE statement in a Fortran subroutine to the Control Panel, the Common variables for these output streams must be included ... |
Problem Statement: When I am running the SQL query select statement on the Aspen SQLplus, why does it returns asterisk as the output? | Solution: The asterisk is caused by the output column width too short to display the full result. Please use the width function to adjust the output column width.
Here is an example, the asterisk has been eliminated after modified the width from 5 to 15.
Keywords: Aspen SQLplus
Asterisk
SQL query
Width function
Refere... |
Problem Statement: I get a consistency error when I add a pump around and specify the pressure drop however, there is no over-specification. How do I solve this problem? | Solution: This particular issue is addressed in the error message window. Here is copy of the message in this scenario.
The draw stream's enthalpy is calculated by the column subflowsheet and the pumparound. The difference that exists is not acceptable by the flash tolerance. The difference came through the gap of hea... |
Problem Statement: The following message will be displayed when using an older version of DMCplus Build to open a CCF file that was saved using a newer version of DMCplus Build:
The CCF file being loaded was last edited with a NEWER version of DMCplus Build (13.0). You are currently using DMCplus version 12.0. Saving c... | Solution: DMCplus Build does not allow backward compatibility when opening CCF files generated using a newer version of the software. While the older software can still open a CCF file generated in a newer version of the software, a warning message is used to notify the user of possible changes in the controller parame... |
Problem Statement: What steps should be taken prior to Aspen Mtell Upgrade? | Solution: To prepare for an Aspen Mtell upgrade you will need to take certain backups and screenshots in order to
i. have a point to return to if the upgrade is interrupted
ii. have a point of comparison to be sure your new settings after upgrade match the old.
To prepare for your Aspen Mtell upgrade please do the fol... |
Problem Statement: I am migrating assets from one Aspen Mtell server or database to another, how do I export the Work Orders from the Failure Library? | Solution: 1. Open Aspen Mtell Agent Builder
2. Select the Failure Library tab
3. In the ribbon select the Failure Editor button
4. Select the Asset for which work orders are being exported
5. Click on the Export Button in the Work Items Window
6. This will open a Work Items Export Window. Specify the desired Path... |
Problem Statement: HTRI is unable to link to Aspen HYSYS. Is there any investigation that can be performed from AspenTech's side on this issue? | Solution: HTRI links to HYSYS using COM/OLE, which is similar to how Aspen Simulation Workbook and other automation tools interact with HYSYS. If HTRI fails to link to HYSYS, the only investigation that AspenTech support can perform is to ensure that the HYSYS automation type library is correctly registered and working... |
Problem Statement: Change the repository of a group of records using a SQLplus Query. | Solution: Create a .txt file with the name of all the records that are going to change the repository, with this structure (1 column and several rows):
ATCAI
ATCL101
ATCL102
Save the .txt file in a known path, for example:
C:\Temp\Tags.txt
Run this Query on SQLplus:
For (Select Line as TagName from 'PATH_OF_TXT_FILE... |
Problem Statement: How to reset analyzer drift correction. | Solution: There is no good way to reset the analyzer drift value. However, here are a couple of suggestions:
Set the AZUDRIFTFRAC to 1 and enter a random lab value that matches exactly with the analyzer. Once the drift is reset to zero you can set AZUDRIFTFRAC back to its original value. Note that this will impact the ... |
Problem Statement: This Knowledge Base article provides guidance on how the different Windows file permission levels affect security of aspenONE Process Explorer plots and graphics. | Solution: Modifying plots and graphics
1. Modifying graphics is not a concern because there is no way to modify graphics in aspenONE Process Explorer (a1PE is just a viewer). In fact there is not even a Save option for graphics.
2. If a user only has READ permission to a plot or graphic file, then they will sti... |
Problem Statement: The following Fatal Error gets displayed when trying to Install Aspen Process Explorer and Aspen APRM (Batch.21) Client Tools:
Error 1935. An error occurred during the installation of Assembly Microsoft MSXML2.publickeytoken=6bd6b9abf345378f, version 4.1.0.0, type =Win32, processorArquitecture=x86 | Solution: Listed below are 3 possibleSolutions to this problem:
1.) Check if there is a Spysweeper service running. If there is, stop the service and try the installation again.
2.) The problem may be because the Pre-Requisite .NET Framework 4.x Components have Not yet been installed properly.
If an occurrence of Micr... |
Problem Statement: Occasionally Customers will experience this “Fatal Error” when trying to Install aspenONE Applications that Require .NET Framework and/or Visual C++ Libraries to be Installed.
For Example: The following “Flavors” of this Error have been Reported as follows for various aspenONE Product Installations... | Solution: and Troubleshooting Procedures:
1. Listing of the Basic Troubleshooting and ReSolution Procedures:
Make sure that when Installing the Applications that the Executing User Account has Local Administrative Privileges on the machine.
Check to Verify that a Supported Version of .NET Framework has been In... |
Problem Statement: How to resolve Error message “Aspen.DCOM Error Marshalling APServer interface”? | Solution: Aspen.DCOM Error message on “Error Marshalling APServer interface using file……Error loading type library/DLL” can be seen after an Aspen installation is removed/uninstalled from the machine (machine which had multiple Aspen ENG products), and while opening the other existing aspen application.
For example: I... |
Problem Statement: Excel has the ability to cast a timestamp consisting of a real number. Is there a way to convert an Aspen InfoPlus.21 timestamp into an Excel double timestamp? | Solution: To calculate a date as a real number Excel counts the date 1/1/1990 as day 1 and counts the number of days that have passed since 1/1/1990 until the current date.
Below there is a sample script that shows how an IP.21 timestamp can be changed into a real number.
LOCAL Date1, DayYear, NumDays, TotalDays, aT... |
Problem Statement: I am migrating assets from one Aspen Mtell server or database to another, how do I export my Equipment Sets? | Solution: 1. Open Aspen Mtell Agent Builder
2. Select the Machine Learning tab
3. From the Equipment Set Hierarchy, select the Equipment Set to be exported
4. Click on the Export Equipment Set button in the ribbon
5. This will open an Equipment Set Export window. Specify the desired path and File name (4) to save ... |
Problem Statement: Sometimes in Mtell you have problems when importing data or have database issues. | Solution: 1 – The Region settings for format and location should be United States.
2 – MS SQL Express allows database sizes up to 10GB. For larger databases you may need to consider MS SQL Server or MS SQL Express for developer edition. Both will need a valid license key and media to install on your PC.
Keywords: No... |
Problem Statement: Aspen Mtell View page not loading when launched on Aspen Mtell application server | Solution: To resolve this issue, IE Enhanced Security Configuration must be turned OFF. Below are the steps to do so:-
Open Server Manager
Click on Local Server
Check IE Enhanced Security Configuration to see if it is enabled
Turn off the Security Configuration as shown in the Image below
Restart IIS using command pr... |
Problem Statement: How to create Sensor Data Source in Aspen Mtell System Manager to connect with Aspen InfoPlus21? | Solution: 1. Open Aspen Mtell System Manager
2. Select the Settings tab
3. Select Sensor Data Sources in the settings menu
4. Click on the Add Data Source from the above bar
5. Type in the name you prefer to identity your historian with
6. Leave the source field set to plant historian and click on the historian box
7... |
Problem Statement: How do you display Calculator Parameter Results in Custom Tables? Sometimes I do not see the Units of Measure. | Solution: To manipulate the initial value of a Parameter, copy its Initial value field from the Define sheet into the custom table. This will become an editable value in the custom table. The units, if any, are not shown. If you do not intend to manipulate the initial value, it is better to copy a value from the Result... |
Problem Statement: How to pin the trend plot to aspenOne Process Explorer homepage for V11.0 and above? | Solution: Before V11.0, we need to modify the file inetpub\wwwroot\AspenTech\ProcessExplorer\WorkspaceDefault.json to customize the A1PE homepage.
After V11.0, there is a much easier way to pin the trend plot to A1PE homepage through aspenONE Process Explorer Admin.
Here is the procedure.
1. Run aspenONE Process Expl... |
Problem Statement: What port number is TSK_ACCESS_SVC using? | Solution: TSK_ACCESS_SVC uses port 20014. For more details about TSK_ACCESS_SVC, please refer to knowledge based article titled When choosing Show
Keywords:
References: s on a tag, this error occurs: Could not connect to NET.TCP://servername:20014/InfoPlus.21/Management. |
Problem Statement: Occasionally a Customer will get an Error 1935 Message when trying to install HYSYS or AspenPlus products on their laptops, which will prevent the Installation from Completing Successfully.
EXAMPLE: Error 1935. An error occured during the installation of an assembly component. { 303994BA-6487-47AE-A... | Solution: Error 1935 is often triggered and displayed when there is an issue with installing a .NET Framework Assembly.
And typically there are 3 common reasons for this Fatal Installation Error, which are listed below:
1.) The Pre-Requisite .NET Framework Software and Components have Not been previously installed cor... |
Problem Statement: Why the “Local Updates Only” option is grayed out when running the aspenONE Update Agent from the IP.21 Cumulative Patch? | Solution: The Local Updates Only option will gray out if the same patch has been installed on this machine before. Below is a sample test.
Before installed the IP.21 Cumulative patch:
1. Download the Cumulative patch to a brand new box with V11.0 MES installed.
2. The IP.21 version was 16.0.0.0 before applied patch ... |
Problem Statement: Why getting the error message “Type Library ‘AUTHWRAPPERVCLib’ not found” when retrieving the Aspen Security roles/members using Aspen SQLplus (the retrieving method introduced in KB #000053494)? | Solution: This error message indicates that the AuthWrapperSvc1.0 Type Library is not selected on the SQLplus
Keywords: Aspen SQLplus
SQLplus
References: s. After you select the AuthWrapperSvc1.0 Type Library and run the retrieving query, the error message will be eliminated.
However, there were some customers reporte... |
Problem Statement: Aspen SQLplus contains an option to generate web reports. These reports can then be sent to multiple people via e-mail, provided the e-mail server supports SMTP Protocol.
Please refer to Knowledge Base article 000065767 ( https://esupport.aspentech.com/S_Article?key=000065767 ) Sending emails using ... | Solution: The first part of the configuration is that you add an Aspen SMTP Configuration Component to your Public DataSource within Aspen Data Source Architecture (ADSA).
The above error could be an indication that this step was not performed or not completed successfully.
Keywords: SMTP
e-mails
ADSA
References: None |
Problem Statement: How to install and open CAPE-OPEN user models in Aspen Plus? | Solution: About CAPE-OPEN Interface:
The CAPE-OPEN interfaces allow the development of new unit operation models for use with any simulator that supports the CAPE-OPEN COM interface standard. Users interested in writing CAPE-OPEN unit operation models should apply for membership in the CAPE-OPEN Laboratories Network. I... |
Problem Statement: Test Failed. Server does not support secure connections when clicking Test Server while configuring Email Server | Solution: User may get this error message if ENABLE SSL(Secure Scokets Layer) option is checked.
1. Uncheck ENABLE SSL(Secure Sockets Layer) to resolve this issue.
Keywords: Secure connections
Mtell Email server
SSL
References: None |
Problem Statement: The user gets the “Http Error 503. The service is unavailable” error message when testing the Plant Historian connection from Aspen Mtell System Manager.
In Aspen Mtell Agent Builder you may also notice that the Data Set Date range is no longer being updated for live agents. | Solution: This error message when testing the Plant Historian connection in Aspen Mtell System Manager is usually caused by the adapter application pool being stopped.
To troubleshoot this issue, please try each section to address this issue.
Restart the Application Pool
Resetting Application Pool ID and Password
E... |
Problem Statement: How to generate links for Dashboards Layouts in aspenONE Process Explorer? | Solution: Follow these steps to generate a link for a Dashboard Layout that might be useful when linking it to a graphic.
Select the desired template.
Add the graphics to each window by clicking in the folder icon. You would have to navigate through your Public files and select your graphic.
Click on the green check ... |
Problem Statement: After installing Intel Fortran and Visual Studio, I still can not compile or link the Fortran program. How do I set up the compiler to work with Aspen Plus? | Solution: Aspen Plus supports a variety of Intel Fortran compiler versions along with a variety of Visual Studio linker versions. All version of Aspen Plus and Aspen Properties require a Fortran compiler AND linker tools for user and system generated routines. If there are any problems selecting or running a compiler, ... |
Problem Statement: How to use the CIM-IO Test API to add a logical device for the existing physical device? | Solution: Here is the procedure:
1. Run the CIM-IO Test API as administrator, and enter 2 for the initial selection. Then press the Enter key.
2. Enter the logical device name, we recommend to use the same name as the physical device name. Then press the Enter key.
3. Enter the CIM-IO server machine's node name or I... |
Problem Statement: I have a secondary control system created, how do I associate it with an area? | Solution: Go to the Project View, and in the Project View click on the area you want to have your secondary control system associated with, and choose Modify.
Choose “Area Instrument: and click Modify.
Under Secondary Control Center, click on the drop down arrow and choose your Secondary Control Center and click OK.
K... |
Problem Statement: What is the source of parameter values in ASPEN PLUS built-in pure component databanks? | Solution: Physical property models require parameters to calculate properties. After you have selected the property methods to be used in a calculation, you must determine the parameter requirements and ensure that all required parameters are available. The required parameters can be retrieved from databanks, entered d... |
Problem Statement: I want to create a new equipment set or migrate assets from one Aspen Mtell server/database to another, how do I import my equipment sets from a .csv file? | Solution: Follow the steps below to import an equipment set profile from an existing equipment set .csv file.
1. Open Aspen Mtell Agent Builder and click on the Machine Learning tab
2. In the ribbon, click on Import Equipment Set
3. Click Next to continue with the Equipment Set Import Wizard
4. In the Select File... |
Problem Statement: How to solve disappearing events issue with Oracle databases. | Solution: This explains how to solve disappearing events issue with Oracle databases.
When working with models archived from Oracle databases, it is possible to encounter issues when adding or changing events. Some of the rows in AtOrionEventxxx tables have X_SEQ contain null values, causing the events to “disappear”
A... |
Problem Statement: Microsoft Office 365, in a physical client machine, has upgraded the Office version, but after upgrading a message like this Cannot run macro TrendAggData Please make sure previous of Aspen Process Data Add-in Legacy -Excel2007(AtData.xlam) have been loaded appears when trying to use the Process Data... | Solution: The problem is on the legacy add-in. The legacy add-in is installed under a specific Microsoft Office folder. During the Office upgrade, the legacy add-in file needs to be manually copied to the new office version folder.
The legacy add-in file, atdata.xlam, is installed to C:\Program files (x86)\Microsoft O... |
Problem Statement: When using the Aspen Process Data Excel Add-in to extract the data from InfoPlus.21, what is the maximum number of output rows? | Solution: The maximum number of output rows for V11 (and above) of Aspen Process Data Excel Add-in is 1048576 rows.
The maximum number of output rows for V10.1 (and below) of Aspen Process Data Excel Add-in is 65536 rows.
Keywords: Aspen Process Data
Excel add-in
Maximum output rows
References: None |
Problem Statement: This knowledge base article describes the reasons that can cause Aspen Process Explorer to not function as expected when a Virtual Private Network (VPN) connection is used to connect to the Aspen InfoPlus.21 server.
This article applies to other AspenTech applications such as Excel Add-in or aspenONE... | Solution: Usually when Aspen Process Explorer (APEx) fails to connect to the Aspen InfoPlus.21 server through a VPN connection the cause is an underlying network problem. A basic requirement for Aspen Process Explorer to function properly is that the Aspen Process Explorer client needs to be able to NSLOOKUP to the Asp... |
Problem Statement: Can you explain the meaning of the solver messages when one changes in Run, Solver Options, Non-linear tab, Diagnostics, the values of Highest variable steps and Highest residuals? These messages are issued when running the attached simulation.
Solving steady state ...
Decomposition:
Total number ... | Solution: complete
Solution
Let's review this section by section.
The message below is issued when the non-linear solver diagnostics option Highest residuals is set to a non-zero value (we suggest a value in the range of 2 to 5, to show the top 2 or 5 highest residuals, that means the 2 to 5 equations that are usually ... |
Problem Statement: Regression of equilibrium constants with pH data set will not work in true component approach | Solution: Equilibrium constants of an equilibrium chemistry reaction can be regressed with the following data-sets:
TPX or TX ( for Salt Precipitation reactions)
TXY, PXY or TPXY
pH
When pH data set is used for regressing equilibrium constants for an equilibirum chemistry reaction, regression run case will fail while... |
Problem Statement: How do I create a pipe demolition item and remove the x-ray work items from it? | Solution: In order to generate the costs for a demolition item (DEML), the Economic Evaluation cost engine actually calculates the cost to design and install the item, then it backs out all those material costs, zeroes them out, and then the cost engine reports only the manhours and labor cost to demolish the item.
Fo... |
Problem Statement: There is a real-time MW tag in InfoPlus.21 database; we want to convert it to an hourly MWH tag and add the hourly MWH output to itself continuously. How to convert a real-time MW tag to an hourly cumulative MWH tag using Aspen Calc? | Solution: 1. Create a new IP_AnalogDef record called MWH in InfoPlus.21 database.
2. Create new function MWH=MWH+(TagAverage(MW, Now()-1:00 , Now(), 0, 0)) in Aspen Calc (MWH = MW * T. In order to calculate the hourly MWH, the MW here will be the average MW in one hour, and the T here will be 1 hour).
3. Bind the MW t... |
Problem Statement: Tutorial: How to perform constrained model identification for mass balance type constraints in DMC3 Builder V9.0 and V8.8? | Solution: Download the attached pdf document which contains a tutorial on how to perform constrained model identification for mass balance type constraints.
Also attached is a dataset .clc file which was used for the example provided in the tutorial.
Keywords: APC Builder, Constrained Identification, Mass balance
Refer... |
Problem Statement: I am migrating assets from one Aspen Mtell server or database to another, how do I export my machine learning agents? | Solution: To export a machine learning agent, follow the steps below.
1. In Aspen Mtell Agent Builder, click on the Machine Learning tab
2. Under the Equipment Set, in the left-hand panel, select the agent you would like to export
3. In the ribbon, click Export
4. In the Select Agents window, confirm that the corr... |
Problem Statement: I am migrating assets from one Aspen Mtell server or database to another, how do I import my machine learning agents? | Solution: You can only import a machine learning agent into an environment that already contains an equipment set and sensor group that match the agent. To import an agent, or agents, from an existing .mtell file please follow the steps below
1. Log into Aspen Agent Builder and click on the Machine Learning tab
2. Hi... |
Problem Statement: Why do I observe Error E072, Group XXX must also have MEMBER Stream GRO in Table PINV, even though there is no GRO stream in my model? | Solution: The problem is that column GROUP in table GROUPS in the CASE table is being truncated and processed as stream GRO. PIMS DR thinks that row XXX in table GROUPS includes member stream GRO and since group XXX is in PINV, all its components including GRO must also be in PINV.
This happens because group XXX is no... |
Problem Statement: Report Query Error (Error# - 2147467259) with the Aspen Economics Evaluation products reporter. | Solution: A Microsoft patch update may be causing errors for customers who use Economics Evaluation reporter in V10 or earlier. Click here to the relevant Microsoft Support site for more background information. Note: We are not seeing this issue in V11 as the old reporter uses MS Access whereas the New Reporter uses S... |
Problem Statement: The Column Hydraulic Analysis result variables accessed in a Define statement do not match the results in the RadFrac block.
For example, the Calculated maximum stage liquid holdup, MAX-PCT-JET, was copied from the RadFrac | Column Internals | OPT-R | Column Hydraulic Results form to the Define sheet... | Solution: The values for all accessible results variables are calculated by the engine. The corresponding results on the Column Hydraulic Results form are calculated by different routines in the Aspen Plus user interface. As a result, the numbers may not exactly match, but they should have similar values.
Keywords: Non... |
Problem Statement: Is there a way to change the units displayed on the strip chart in Aspen HYSYS Dynamics? | Solution: Yes, users can change the units displayed.
To change the units: Right click on the strip chart->Go to Graph Control->Go to Axes Tab->Change the units
However, it only changes the display units on the chart. To change the historical data units, user will have to define that via a custom Unit set.
Keywords: S... |
Problem Statement: How do I make a unique clone of a user-created P&ID? | Solution: First, close down all open projects. Go to the Libraries tab and open up the P&ID library. This will display the list of user-created P&IDs on the left.
In order to make a unique clone, right-click on the source P&ID and select Duplicate. This will generate a cloned P&ID which can then be independently re... |
Problem Statement: This | Solution: explains the reason why the error CIMIO_SOCK_GETSERV_FAIL, Error looking up service name is observed in the RTE based controllers.Solution
This error happens if there is a Comment character (#) on the same line of the cimio logical devices in the cimio_logical_devices.def file causing connection problems for... |
Problem Statement: A controller with a large list size may not write out to the DCS despite all indications that the writes are successful. This is observed on a Honeywell TPN OPC server running on an eApp. | Solution: The LISTSZ parameter (Condifure section) of a controller determines the list size for the PUT and WRITE requests to the CIMIO server. Each OPC server may react differently to the various size of the lists. On the Honeywell new eApp running with R410 software, a list size larger than 420 will cause the write... |
Problem Statement: AspenONE exchange launches without an issue when we click on the exchange button in Design | Parameters page. However, there is no content to show on exchange results as below: | Solution: It does not show results because There is no replace compressor indexed document.
Current, no alternative or workaround is available.
Keywords: None
References: None |
Problem Statement: I want to create a new equipment set or migrate assets from one Aspen Mtell server/database to another, how do I import my equipment sets from a .csv file? | Solution: Follow the steps below to import an equipment set profile from an existing equipment set .csv file.
1. Open Aspen Mtell Agent Builder and click on the Machine Learning tab
2. In the ribbon, click on Import Equipment Set
3. Click Next to continue with the Equipment Set Import Wizard
4. In the Select File... |
Problem Statement: How to solve disappearing events issue with Oracle databases. | Solution: This explains how to solve disappearing events issue with Oracle databases.
When working with models archived from Oracle databases, it is possible to encounter issues when adding or changing events. Some of the rows in AtOrionEventxxx tables have X_SEQ contain null values, causing the events to “disappear”
A... |
Problem Statement: How do I migrate Aspen Mtell assets, along with their agents, from one database to another? | Solution: When Aspen Mtell assets and their agents are being migrated, it is important to ensure that all additional dependent items - like the equipment hierarchy, work orders, equipment sets and sensor groups - are also migrated. This master knowledge base article breaks the process into two main sections - the expo... |
Problem Statement: Slow performances in Aspen SCM when Fair Sharing of Remote Desktop Services is enabled | Solution: When the Fair Sharing feature of Microsoft Remote Services is enabled, it may take longer to launch SCM or open the case file.
You can disable the Fair Sharing setting as follows.
■DISK
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\TSFairShare\Disk
Set the value as 0 (OFF)
■CPU
HKEY_LOCAL_MACHINE\SO... |
Problem Statement: How do I change the currency for a quoted item cost? The only available option is USD. | Solution: First, the currency needs to be added from the Project Basis View | Currency form. Click Add, set the country base as USD and then provide data for:
Currency symbol
Coversion rate
Currency name
Currency description
After providing this information and clicking OK, the new currency will appear as a selectabl... |
Problem Statement: ACM models crash, when trying to export to Aspen Plus, inconsistently. How do I fix the issue? | Solution: This issue can occur when the export of atmlz file is done to a folder inside cloud drive applications like dropbox, onedrive.
Make sure that the atmlz file is exported to a regular folder in the machine.
Keywords: Exported model, package model
References: : VSTS ID 512181 |
Problem Statement: How do I set the number of truckable modules in an area? Then, how do I assign components to the different modules? | Solution: After creating a new Module-type area, open the Area Specifications | Area Modules form. On this form you may provide the number of truckable modules, with a maximum limit of 4. Ensure the module type is set to truckable (TRMD). Further down in the form, you may provide the dimensions for each module.
Onc... |
Problem Statement: How can both the datasource and repeat area field of a tag be specified in an ad-hoc calculation? | Solution: The on-line help files provide the following two recommendations for specifying the data source and the field of a tag.
1. Specify a datasource using the following template: datasource:tagname
e.g. =TIGER:ATCAI+BANGOR:ATCAI
where the data sources in this example are TIGER and BANGOR.
2. Specify a particular t... |
Problem Statement: I would like to automate the Health Summary Report for a selected Aspen InfoPlus.21 system. | Solution: Before you start, please first follow the instructions included within the Aspen SQLplus Reporting help. Aspen SQLplus Reporting page can be accessed by following this URL in the IE browser on the Web server:
http://localhost/SQLplus/Report.aspx?IsPublic=true&ReportName=HealthSummary [localhost]
Before config... |
Problem Statement: The Aspen Process Data Excel COM Add-In, which was visible earlier, has disappeared from the Ribbon after Excel crashed.
This Knowledge base Article shows a possible | Solution: .Solution
In Excel 2010 (or later), go to File => Options => Add-Ins => Manage
From the drop-down select 'Disabled Items' and click on 'Go'
If the Aspen Process Data Add-In appears in this list then select it and click 'Enable'.
Now go back to File => Options => Add-Ins => Manage => Com Add-Ins and try to se... |
Problem Statement: The SQLPlus Reports Home Page is Not Initializing Correctly when Accessed.
All of the expected Default Button Text and Labels that are required to make the page
functional are Missing and Not getting Displayed, which makes the Web Page unusable.
NOTE: This Error Problem was Reported for a V11.0 ME... | Solution: 1.) Start by Checking the Account that has been Configured to Start the default “AspenAppPool” in IIS.
If that App Pool has Stopped or Crashed, then try Restarting the App Pool and then Retest, assuming it stays running.
If the App Pool cannot remain Running, then try changing the Service Account and make sur... |
Problem Statement: Is there any documentation of the syntax inputs in the Aspen Production Record Manager (APRM) REST API function calls available in the aspenONE Process Explorer Samples page?
This knowledge base article answers the above question and provides a procedure to install and view the latest description of... | Solution: Yes, there is such documentation. It is available in the attached file. Please note that this attached file will only work with Aspen software version 11 and above.
Installation instructions:
Please unzip the attached file and copy it into the following directory on the A1PE web server:
C:\inetpub\wwwroot\... |
Problem Statement: Why are the stresses at the reinforcement plate edge not evaluated when nozzle loads are considered? | Solution: The calculation method for external loads according to WRC-107 does not include the calculation of stresses at the reinforcement plate edge. This is because the method assumes that the reinforcement ring is going to be thick enough that all the stresses caused by the discontinuity will be dissipated when reac... |
Problem Statement: How do I correct the electrolyte molar and mass flows in a stream leaving a Tee? While the Tee does correctly split the overall component flows, the Electrolyte flows (Stream Worksheet tab | Electrolytes form | Composition radio button | Molar or Mass radio button | Molar or Mole Flow column) are no... | Solution: This is a known issue still being investigated. In the meantime, there is a workaround as described below.
In order to resolve this issue, send the incorrect stream through a mixer or a valve and then view the outlet Electrolyte flows. The downstream Electrolyte molar and mass flows will now be fixed. The... |
Problem Statement: How do I simulate a heat exchanger in Aspen HYSYS using the ACOL design model? | Solution: The ACOL design model was used with early versions of HYSYS to rigorously design an Air Cooled Heat Exchanger. The HTFS – ACOL functionalities have since been replaced by a more robust tool, Aspen Exchanger Design and Rating (EDR). Using EDR together with Aspen HYSYS, one can rigorously design and rate an a... |
Problem Statement: How do I extract the heating curve and other properties from Aspen HYSYS case in to MS excel? | Solution: ThisSolution is the extension ofSolution
How can I use MS Excel to retrieve the heating and cooling curve of a heat exchanger in user specified units? - https://esupport.aspentech.com/S_Article?id=000089201
The attached Excel file has VBA codes that allow extracting heating curves and other properties to a sp... |
Problem Statement: How do you model a gas-phase (UNIPOL) process to product linear-low density polyethene (LLDPE) or high-density polyethylene (HDPE)? | Solution: Attached is a model of a gas-phase (UNIPOL) process to product linear-low density polyethene (LLDPE) or high-density polyethylene (HDPE) in Aspen Plus. This model will run in Aspen Plus V10 and higher.
This configuration is known as a ‘swing’ reactor. It can make either product – butene or other alpha-olefin... |
Problem Statement: I noticed in Aspen Capital Cost Estimator (ACCE), Help, the option to Show Cost Basis for my current release. Where can I find all the previous indices? | Solution: The list of all indices is in the Icarus
Keywords: Indices, cost basis
References: Manual, Chapter 33, titled, Base Indices. You can get the manual from ACCE under “Help”, “Documentation”. |
Problem Statement: I have mixture viscosity data for different concentrations of polymer in a solvent, for different molecular weights of the same polymer. How can I regress the Aspen Polymer Mixture Viscosity Model binary parameters from this data? | Solution: The Aspen Polymer Mixture Viscosity model uses the pure component viscosities, which for the polymer components are calculated from the Modified Mark-Houwink/van Krevelen model. This model takes into account the dependence of the polymer's viscosity on the molecular weight:
On the other hand, the Aspen Polyme... |
Problem Statement: Is the ACM language similar to gProms. Is this true? Is there a quick way to translate from gProms to ACM for the isotherms implementation? | Solution: ACM is similar to gProms in a way they are all equation based solver, it is pretty similar, but ACM can use the Aspen Property database.
Aspen Adsorption is library we developed tailored on gas adsorption based on the framework of ACM. The language is ACM, but it already has the Adsorption library such that u... |
Problem Statement: Since Actual Volume Flow uses rigorous density calculations at the stream conditions, it can not be directly specified for a material stream. (For descriptions of different types of volume flows, refer to the following KB: https://esupport.aspentech.com/S_Article?id=000089966) | Solution: To specify an Actual Liquid Volume Flow, you must use an Adjust block. This operation will adjust an input flow rate until Actual Volume Flow reaches the correct value.
1) Fully specify a material stream with compositions, stream state, and a flow rate (Liq Vol Flow @ Std used in this case)
2) Add an adjust... |
Problem Statement: How can design gauge pressure impact the design and cost of column nozzles? | Solution: Design gauge pressure impacts the nozzle class predicted and, by extension, the equipment total and direct cost. A multiple diameter tower will be used to illustrate this impact. If there are two towers with identical heights and diameters, but one is at 15 psig while the other is at 3000 psig design pressur... |
Problem Statement: How to get component qualities blend by blend in MBO? | Solution: In Table _TANKS_MBO, users can get component qualities values by blend, which is the same as those in AB_TANK_QUALITIES. AB_TANK_QUALITIES is created after exporting blends while _TANKS_MBO is created when publishing results.
Users can also use GetAllValsForTankRStrmProp, GetTankProp or GetStrmProp automatio... |
Problem Statement: When clicking the About button in Aspen Mtell (System Manager or Agent Builder), the About window does not open even though other functions of Aspen Mtell work normally.
You may get the following error popup:
(Default Exception Handler) Application Exception: Retrieving the COM class for component... | Solution: Follow the instructions in this article to do a full uninstall of Aspen Mtell.
Install Aspen Mtell using the appropriate media from the Aspen Tech Download Center. Be sure to run the Setup file as an administrator. More information can be found in the Aspen Mtell quick installation and start up guide :
Apply... |
Problem Statement: When working in the submodels window of Aspen Petroleum Scheduler, after clicking on “Update Submodel | Solution: When working with submodels in APS, material balance rows (VBAL or WBAL) are mapped as product yields. If you have specified the APS stream in the Stream section of the Build ref tab, then it will be mapped to a material balance row, so it will display as an output.
To solve it you can go to the Summary tab ... |
Problem Statement: Are any recommendations how to switch from gProms to the Aspen Adsorption? | Solution: It is always good to decompose the model into pieces and steps for validation.
For example, firstly, user should start from validation of isotherm, then build the flowsheet for the process, but validate the first step. Finally, validate the whole flowsheet with whole cycle.
Keywords: gProms, Aspen Adsorption... |
Problem Statement: Can a column calculate backwards? | Solution: The column solver works independently from the HYSYS main solver; as a consequence, calculations take place only in the forward direction when solving a column subflowsheet. In other words, all feed streams must be fully specified in order for the column to solve. If you know the outlet streams and wish to fi... |
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