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Problem Statement: Acid Gas Cleaning in Aspen HYSYS V8.3 | Solution: This article contains an overview of the new feature in Aspen HYSYS V8.3 for Acid Gas Cleaning. Along with the overview, you will find a set of instructions to perform simple tasks in the feature to learn more about its capabilities, supporting HYSYS.hsc files for the same purpose, and a video recording of th... |
Problem Statement: It is possible to use Aspen Simulation Workbook (ASW) in Excel to deploy an Aspen HYSYS Model? | Solution: Attached is a set of files showing you multiple ways to deploy an Acid Gas Cleaning Model to an End User Using Aspen Simulation Workbook. This example will show you how to send the HYSYS model summary grid or the HYSYS Process Data Table to Excel via Aspen Simulation Workbook. Additionally it has an example o... |
Problem Statement: This KB describes the best practice to install .NET Core updates without affecting GDOT components. | Solution: Updating .NET Core is not required by GDOT. The GDOT V11 media automatically sets up .NET Core 2.1.5 as part of the installation process. The GDOT Web Viewer can run without issues using this version.
However, if there is an IT or Cybersecurity policy which requires an update to .NET Core 2.1 on the GDOT Web... |
Problem Statement: When calculating blend using a single assay, one would expect the resulted blend would be identical to the assay. However, when viewing component breakdown composition of the blend and the assay, they appear to have some small differences. What is the reason for this inconsistency? | Solution: When you blend two or more assays, they need to be on the same cut range. If they are not, then the Aspen Physical Property System first converts the assays to the same cut range. This conversion uses points spaced at 1% intervals from 0% to 100% distilled. If you have points which are very closely spaced in ... |
Problem Statement: How to view the log of changes that had been made to the existing Aspen ONLINE project? | Solution: Aspen ONLINE has capabilities to track changes made to the online system. In many cases, a problem may be result of what happened to be a minor change to the system. By determining when the online system stopped working and looking for changes made at or just before this time, it may become apparent what caus... |
Problem Statement: How to create an initialization script in ACM? | Solution: Scripts are VB based programs that can be used to perform automated sequence of event like a Task.
Tasks are often preferred for automating sequence of events in dynamic mode and this is due to ACM language used in developing them.
One of the important uses of a script is to assign initial values to model var... |
Problem Statement: How to display specified value base on tag quality in Graphic.
For example: You may want to display -1 if tag quality is Bad , you may also want to display 9999 if tag quality is Bad Tag. | Solution: You can use ad-hoc calculation with If statement to achieve this.
For example:
=IF{tag01 IP_INPUT_QUALITY} =-6 THEN -1 ELSE IF{tag01 IP_INPUT_QUALITY} =-13 THEN 9999 ELSE tag01
IP_INPUT_QUALITY is maintained by the record QUALITY-STATUSES.
Key words:
Else IF
Ad-hoc
Calculation
Bad
Bad Tag
Keywords: None
... |
Problem Statement: Which aspenONE Supply Chain Management applications are supported on Azure and what are the best practices for deployment? | Solution: The following aspenONE Supply Chain Management applications have been certified on an Azure virtual machine (VM):
Aspen Collaborative Demand Manager™
Aspen Supply Chain Planner™
Aspen Plant Scheduler™ Family
Aspen Supply Chain Connect™
Best Practices
To deploy Supply Chain Management applications in Azure fol... |
Problem Statement: The following may be symptoms shown for this issue:
When trying to delete or update an application in Aspen Watch Maker, it fails with this message: The requested task was not performed. Error creating record: Current license state of IP.21 server does not allow this operation
The Run Status in Aspe... | Solution: If the above root cause is confirmed to be true, the database will need to be restarted when safe to do so. Please follow these steps to resolve the issue:
Make a backup copy of the snapshot file just in case. You can do so by opening InfoPlus.21 Administrator, navigate to the server name and right-click on i... |
Problem Statement: How can I review constraints and penalties in Aspen Unified PIMS V12? | Solution: In this video you can find information about the view Data Inspector, Constraints or Penalties functionality in Aspen Unified PIMS V12
Keywords: None
References: None |
Problem Statement: What is the calculated block duty of a convective dryer? Why doesn't it change when I change feed flowrates or temperatures? | Solution: The energy balance of a convective dryer can be described with the following diagram and formulas.
Details are also explained in article 00005005.
There are 2 types of heat transfer in a Convective Dryer:
Direct heat transfer: heat transfer from gas directly to solid, which is Q in the diagram
Indirect heat... |
Problem Statement: Is it possible to reassign the port number used by the ADSA Web Service protocol? | Solution: The ADSA Web Service uses the same port as that specified for the default web site on the ADSA server (80, by default). If the port number for the default web site is changed, ADSA clients can also be modified to connect using the new port.
The following example assumes that the user would like to use port ... |
Problem Statement: In the simulation import process of an Aspen Plus file, streams or certain data may not be transferred to ABE. what do I do to make this data available? | Solution: The reason for this missing data is because the necessary properties/property set has not been set up in Aspen Plus.
A property set is a collection of properties that can be used in stream reports. Selecting the property set will enable its list of properties to be reported in the Aspen Plus bkp file and thus... |
Problem Statement: You see the following error message in the CIMIO_MSG.LOG file when starting the Aspen Cim-IO for OPC-UA server (no Cim-IO client involved) with an interface to an OPC-UA server defined:
“Error converting device to service”
This Knowledge Base article shows how to resolve this error message. | Solution: The fix to the error “Error converting device to service” is to define the OPC-UA server as a logical device in the CIMIO_LOGICAL_DEVICES.DEF file.
Keywords: None
References: None |
Problem Statement: Aspen Mtell Maestro V11.1.2 quick deployment guide when there is no internet connection available in host machine. | Solution: This article will explain how to deploy Aspen Mtell Maestro V11.1.2 when there is no internet connection available on host machine.
Prerequisites:
Aspen Mtell Maestro host machine must meet the corresponding platform specifications (see V11.1 Containers in https://www.aspentech.com/en/platform-support).
Aspe... |
Problem Statement: Aspen Mtell Maestro quick installation and start up guide. | Solution: This article will explain how to install Aspen Mtell Maestro.
Note: For detailed information, please refer to Aspen Mtell Maestro V11.1.1 Installation Guide.
Prerequisites Installation:
1. Aspen Mtell Maestro host machine must meet the corresponding platform specifications (see V11.1 Containers in https://w... |
Problem Statement: What does the Interpolate using past data only checkbox do when training an Agent? | Solution: When training an Agent, the user has an option to interpolate the data for missing data points within the training date range.
Interpolate using past data only option will interpolate data point using the past value for the particular sensor. It will use Stair Step interpolation when interpolating the past ... |
Problem Statement: In the standard workflow of Simulation Importer, users often need to go to Material Ports tab to map process streams to the relevant equipment material ports so that information from the streams are also available in the equipment objects. For users whose workflow is creating and connecting Process F... | Solution: We will use a KB script to create the auto-map. When the simulation stream is mapped to the process stream in Simulation Importer, the stream-to-port mapping is created automatically, and the stream data will be transferred onto the ports after users run the transfer.
The KB module contains a demon that needs... |
Problem Statement: Some customers may want to display the tag value with commas in Graphic (i.e. 1,000,000 instead of 1000000). | Solution: 1. Go to Aspen SQL plus, open attached Commas_format.SQL
2. Modify the tag name “atcl101” to your tag name
3. Click on the Menu Record | Save As...
4. Type a name such as Commas_format , select QueryDef, click on Create
Select TSK_IQ1, click on OK
5. Go to Infoplus.21 Administrator, search for the recor... |
Problem Statement: Is it possible to trend with SQL server tags but not creating SQLA tags in Infoplus.21 ?
This KB article provides you an example on how to trend with SQL server tags using Aspen Process Data (RDBMS). | Solution: 1. In SQL Server Management Studio, create a database named PD_RDBMS.accept defaults for database creation
2. Run Create_RDBMS_Tables.sql from a database tool in MSSQL to create the required tables in the database; this will populate data for two RDBMS test tags:RAR_RDBMSTag1, RAR_RDBMSTag2
3. Create an AD... |
Problem Statement: What is the difference between IP_TREND_QSTATUS and IP_TREND_QLEVEL in a tag's repeat area? | Solution: In the Aspen InfoPlus.21 (IP.21) Administrator a selector record titled QUALITY-LEVELS defines three unique descriptors for quality (good, bad and suspect). Another selector record, QUALITY-STATUSES, defines 73 unique descriptors for quality. This same record also maps each of its 73 occurrences to one of the... |
Problem Statement: The following error is shown in the IO_DATA_STATUS within the transfer record:
Facility:77, Error: 77106
What does this mean?
According to the cimio_opc.def file (OPC errors) located in <drive>:\Program Files (x86)\AspenTech\CIM-IO\etc folder, the reason is unknown:
STATUS_NOSPECIFICREASON,77106,No s... | Solution: Error 77106 usually implies that something is wrong on the DCS or in the OPC server. This code means that the OPC server sends data to Aspen Cim-IO for OPC in a format that Aspen Cim-IO for OPC does not recognize. As a possibleSolution, try to read the same tag from another OPC client. If it fails, examine th... |
Problem Statement: You are not getting data in the InfoPlus.21 database from your Cim-IO interface and there are many messages in the cimio_msg.log file on the Cim-IO server machine like:
CIMIO_DAL_CONNECT_CONNECT, Error connecting to service
CIMIO_MSG_CONN_SOCK_CREATE, Error creating an outbound socket
CIMIO_SOCK_OUT... | Solution: This error generally means that either there is some type of problem with the services file or the DLGP for the Cim-IO Interface is not running. There is an entry in the services file on the Cim-IO server machine, located at
C:\Windows\System32\drivers\etc
for the DLGP Service name, the port number, and netwo... |
Problem Statement: How do I resolve Error 407: Proxy Authentication Required when trying to connect to aspenONE Exchange? | Solution: aspenONE Exchange requires your network to be configured to connect to external sites to retrieve information. The following Ports and URL's are required to be open for connectivity:
Ports:
· 443, 80, 9350 to 9354
URL's:
. *.servicebus.windows.net
. kbdocs.connect.aspentech.com
· ... |
Problem Statement: This article explains how to enable QP algorithm for DMC3 controller Steady State Optimization. | Solution: When user is defining the CV Ranks and SS ECE tuning parameters in DMC3 Builder, the controller will use LP optimization by default. If user would like to enable QP algorithm for different CV ranks, he/she can tick the checkbox of Show rank groups.
By enabling 'Use QP' column for different CV ranks, controll... |
Problem Statement: This article describes in details about the procedure to enable smart tune for the controller application that is imported from CCF (legacy based) to DMC3 builder platform.
As such, the CCF would be using the traditional optimization method.
After importing to the Aspen DMC3 builder, Smart Tune shoul... | Solution: Below procedure describes the steps to enable smart tune in Aspen DMC3 builder.
a. Open DMC3 Builder and navigate to Controller selection at bottom left hand side.
b. Once you select Controller, in DMC3 Builder, Import option will be available on top left hand corner.
c. Select Import -> Import application... |
Problem Statement: This | Solution: frames where you can find the Messages generated in PCWS.
Solution
There are basically two locations where the Messages generated from PCWS are saved.
The first one, is the eng. file created on each folder of every DMC applications under the path C;\ProgramData\AspenTech\APC\Online\app.
This log will show th... |
Problem Statement: How to change the location of a repository currently in use? For example, moving the current repository from the C drive to the E drive. | Solution: IMPORTANT NOTE: This procedure assumes that you do not have any unmounted filesets in your historian (i.e. no filesets with FS_STATUS_FLAG = None). If you do have any, delete or shift into them first.
1. Create a new folder on the E drive (e.g. E:\arcs). This will be the new location of the repository.
2... |
Problem Statement: What is the difference between using the CCF and the DBG file to run Aspen DMCplus Simulate? | Solution: The CCF file contains a snapshot in time of the controller (current values, tuning, calculation results, etc.) as well as the Cim-IO connection information. It contains no history, therefore no future predictions, and is therefore required to Initialize Controller on the first step. Using Simulate with a CC... |
Problem Statement: This knowledge base document provides a short description of the common tasks that are defined in the Aspen InfoPlus.21 Manager. | Solution: Task Name
Description
TSK_C21_WIN_INIT
Initializes/enables inter-process communications. Continues to run after startup.
TSK_H21_INIT
Creates and loads shared memory for the IP.21 historian. Runs and terminates during startup.
TSK_H21_ARCCK
Mounts, checks and verifies every repository and fileset during start... |
Problem Statement: After a hard restart of the online server, the IQ application seems to be running, but the calculated predictions are frozen even though the inputs are changing. Reloading the IQ application and/or deleting the history file does not help. No error files are created. | Solution: Turn ON the debug diagnostics for the IQ application (Debug Print Switch). Please refer to this KB 121401 on how to obtain debug files. Once the diagnostic information is generated, examine the iqp1_{IQ application name}.dbg. If the file is showing the following messages
03/10/16 13:03:33: P:XXXX: Applicat... |
Problem Statement: AspenTech distributes two different types of Aspen Manufacturing Suite (AMS) patches.
One is what we would call a Cumulative patch, whereas the other would be an Emergency patch.
In particular the Cumulative patch would typically be an 'msi' patch that can be viewed via the Aspen Update Center, where... | Solution: article discusses the situation of downloading a cumulative msi patch, invoking the installation by double clicking on the downloaded exe file, then after a few minutes getting an error message
Could not open cached msi file - 2147467259: open database, database path, open mode
Possibly followed soon afterwar... |
Problem Statement: If using S&F, the IO_ASYNC field must be set to YES in the Logical Device record and the transfer records. | Solution: The IO_ASYNC? field (located in records defined by IODeviceRecDef and by any of the transfer records such as IOGetDef) indicates if an asynchronous process is allowed. If 'Yes' is selected, the main client task sends data requests to the Cim-IO server tasks, but does not wait on a reply. Therefore, there is n... |
Problem Statement: How to import assays from an external source in assay manager | Solution: Following are the steps to understand how to import assay data from external source (eg. TOTAL website) using an example
1. Download the excel file from external library (in this case the TOTAL website)
2. Open Assay Manager
3. Characterize the existing assays
4. Go to Model Assays tab
5. ... |
Problem Statement: How can I set up flange configuration in the Relief Valve Editor? | Solution: You can model a source flange effect in the Relief Valve Editor.
When you specify the Relief Valve flange diameter under Conditions tab in the Relief Calve editor, Aspen Flare System Analyzer (AFSA) introduces an expander to perform the swage calculations using the settings in the Swage section under the Meth... |
Problem Statement: How to model columns with multiple overhead condensers. | Solution: The following diagram illustrates how to use RadFrac to model a column with two overhead condensers. The basic idea is to simulate the first condenser using stage 2 with a heat stream.
In the above configuration, the stages are treated as follows:
Stage 1 --- 2nd condenser
Stage 2 --- 1st condenser
Stage 3 --... |
Problem Statement: When trying to start the CIMIO to OPC Interface service, it fails with the pop-up message Error 1067 Process Terminated Unexpectedly. Similar information may also be present in the NT Event Viewer.
The 1067 error may be accompanied by the following message in the CIMIO_MSG.LOG.
Fri Mar 09 14:33:45 20... | Solution: There are two reasons that the error messages may appear.
The first is that the account used to start the interface may not have proper privileges. The following information comes from the CIM-IO for OPC User's Manual.
Before you install the interface, make sure that you determine the username and the passwor... |
Problem Statement: How is pipe wall temperature defined in Aspen FLARENET? | Solution: The Wall Temperature reported in the P/F Summary is the internal wall temperature, and the External Temperature is the outside wall temperature. External Temperature in Aspen FLARENET is not simply the metal pipe wall itself but includes the insulation thickness if there is insulation. The reported wall tempe... |
Problem Statement: How do I export data from Aspen FLARENET to Excel? | Solution: There are a couple of different ways to export data from Aspen FLARENET to Excel. The first method is to print the desired data to a file, and open this file in Excel. Follow the steps below to do this:
1. Open your Aspen FLARENET case and from the File menu, select Print.
2. Use the checkboxes to... |
Problem Statement: How to delete a stream? | Solution: Select the stream name under Data || Process Streams form then press Delete button.
Keywords: Delete, stream
References: None |
Problem Statement: When trying to specify a variable of assay components, one cannot find the assay component name in stream variables form. Is it possible to specify assay components as design spec variables? | Solution: Yes. User can access assay components in variable definition dialog box only when user specify pseudocomponents Generation and Naming Options.
The procedure is listed as below:
Create a new object under Components \ Petro Characterization \ Generation.
Select assay/blend ID(s) from drop-down list and enter a ... |
Problem Statement: Need to insert old data into an already existing record that contains a history repeat area. The repeat area contains existing history. | Solution: Use the INSERT INTO history method.
For example:
INSERT INTO atcai (ip_trend_value, ip_trend_time, ip_trend_qstatus)
VALUES (4.5, '30-NOV-99 12:30:00', 'GOOD');
When inserting a lot of historical data to many tags, it might be a good idea to use 2 queries where one passes parameters to the other. A text file ... |
Problem Statement: Determine the value of the Universal Gas Constant R in HYSYS | Solution: The value of Universal Gas Constant R can be calculated using the HYSYS Spreadsheet function.
In this example file(attached), the IDEAL fluid package is used from the Aspen Properties database. A stream is created for providing the variables that are required by equation PV=nRT.
It is also possible to calcula... |
Problem Statement: Unable to view AFW roles when a Domain User is Member of Local Group | Solution: When a Domain User is part of a Local Group and it’s been assigned to an AFW Administrator role. Then during login using Domain User account will not allow to fetch AFW Roles in AFW Security Client Tools.
gnLocalGroupsLevel variable in configured by default not to allow Local Group.
The following are th... |
Problem Statement: Upgraded from 5.0 to 5.4 and now gets an error message: USR_GET_CONNECT, ERROR CONNECTING DEV (error connecting to device) | Solution: This error can occur if you do not do a CIM-IO shutdown before upgrading. By running the upgrade without doing a shut-down a store file may be built. Immediately after the upgrade the store file will not be readable by the newer software. The user will see the above error message. Make sure to check the
C:\Pr... |
Problem Statement: I logged in with the wrong password and I can't get back into Aspen Retail after using the correct password. | Solution: Once the wrong password is typed, you are unable to connect to the database during the current session. This is normal behavior when you are running MapPoint. Since MapPoint does not shut down when you enter an invalid password for Aspen Retail, you are unable to log back into Aspen Retail again.
The workarou... |
Problem Statement: How can I save/print the Aspen FLARENET PFD in PDF format? | Solution: To save the PFD in PDF format, first ensure that the 'Use wire frame icons' check-box is activated on the File | Preferences | PFD tab, as this is the only type of graphical output that can be converted to PDF format.
After verifying the aforementioned check-box is activated, press the 'Save image as windows ... |
Problem Statement: What are the rating, design and debottleneck calculation modes in FLARENET? | Solution: ? Design: Calculate Diameter (D) of pipe, given flow rate (W), temperature (T), and Pressure (P) with constraint of Ps (MABP), Velocity, Mach number and noise
o Note: The pipe diameter will increase in the direction of flow
Rate: Calculates Ps (static pressure), Velocity, Mach, Noise, given W, ... |
Problem Statement: I'm getting a PH Flash Failure message when running my Aspen FLARENET case. What does this error mean and how do I correct it? | Solution: The PH Flash Failure message indicates that a flash calculation that Aspen FLARENET is attempting has failed for some reason.
This can occur for various reasons. Some things to check are:
- Ensure that your pipe segments are connected consistently, ie all of the connections are blue to red.
- ... |
Problem Statement: Why do the noise calculations performed by Aspen Flare System Analyzer give different results from the ones obtained per API 521? | Solution: The noise equation included in API 521 is applicable only for a point of discharge to the atmosphere (i.e. a Flare Tip). It calculates the sound pressure level generated by a relief load measured at a fixed distance of the observer from the source of the sound.
On the other hand, the noise equation used by As... |
Problem Statement: Is it possible to make Aspen Plus solve the flowsheet automatically every time that a change is made? How do I select the auto-run mode in Aspen Plus so that the flowsheet is solving continuously as every block specification is completed? | Solution: Aspen Plus has an auto-run mode so that the flowsheet is solving simultaneously when every block specification is completed. It is generally not recommended to use Auto Run because it can lead to issues with the forms updating slowly as the simulation is always running. The recommended setting is the default ... |
Problem Statement: How do you insert a conventional non-databank component in an Aspen Plus simulation? | Solution: If you have searched all available Aspen Plus databanks to find the component you need, and failed to find it, complete the following process:
1. Define the non-databank component. On the Components | Specifications form, define the Component ID and leave the formula and component name blank.
2. D... |
Problem Statement: How to preserve curve operations when moving a model between DMCplus Model project files (.dpp file)? | Solution: The following options can be used to preserve curve operations when moving a model from one .dpp to another.
1. The simple method to preserve the model curve options is to save the old .dpp file with a different name and edit the copy .dpp file in such a way that the unwanted contents are selectively remo... |
Problem Statement: This query displays all the transfer records defined by IOGetDef along with the logical device associated with the transfer record for a particular tag in the Aspen InfoPlus.21 database. | Solution: Local TagName;
TagName = 'ATCAI'; --Change this for the IP.21 tag name you want to search
select io_main_task->io_device as cimio_devName, Name, IO_VALUE_RECORD&&FLD, io_tagname
from iogetdef where IO_VALUE_RECORD&&FLD = TagName||' IP_INPUT_VALUE';
You can modify this query to search using an DCS/OPC ad... |
Problem Statement: Is there an Aspen SQLplus query to search for a specific tag (or string) inside a QueryDef record? | Solution: Below is an example query to do this. The query works by using the POSITION function to search for a substring within another string. In this case the tag name is the substring and the whole string is a line in the QueryDef repeat area. The POSITION function returns an integer > 0 if the substring exists.
-... |
Problem Statement: Where to I set the mass balance checking tolerance so that I get an error message when the block is out of mass balance greater than the convergence tolerance? | Solution: Mass balance checking is performed with a relative tolerance of 10-4. This tolerance cannot be changed.
Check mass balance error around blocks should be checked on the Setup | Simulation Options | Calculations sheet. If this option is checked a warning message will be printed if there is an imbalance along ... |
Problem Statement: I have a simulation file with only one component and the mixture analysis is greyed out. How can I use the mixture analysis with one component? | Solution: The pure component analysis is the typical tool for when users have only one component. It includes a list of typical transport and thermodynamic pure component properties. However, it has limited options compared to the mixture analysis.
If there is only one component in the simulation, the Mixture analysis ... |
Problem Statement: How do I uninstall Aspen PIMS? | Solution: The Aspen application installation comes with an uninstall program. This is always the first step to try. If this does not work, try to use the Windows Uninstall function from Control Panel | Programs and Features. If this is still not working, you can try the Windows Repair first, then try the Windows Uni... |
Problem Statement: How do I switch off the loop identification when designing a HX network? | Solution: In Aspen Energy Analyzer, when user tries to modify the exchanger network, the program may hang for a long time to identify the loops and paths.
In order to switch off this automatic loop identification, user can go to Topology View and uncheck the Always Run Topology box, see the screenshot below:
Keywords: ... |
Problem Statement: Should I heat integrate in the process simulator to get the base model or import it without heat integration? | Solution: It is a good idea to integrate as much you can in the process simulator (Aspen Plus or Aspen HYSYS) and then import it into Aspen Energy Analyzer. Then it becomes easier to analyze the heat exchanger network and make automatic or manual modifications.
Keywords: Heat integration, process simulator, HX-Net.
Ref... |
Problem Statement: How is it possible to use liquid heat capacity parameters directly in a simulation? | Solution: By default, Aspen Plus does not use the DIPPR liquid heat capacity polynomial parameter CPLDIP to calculate the liquid enthalpy. Instead, most option sets default to calculate liquid enthalpy using the ideal gas enthalpy and the heat of vaporization.
To calculate liquid enthalpy from liquid heat capacity poly... |
Problem Statement: Even if the BWR-LS (Benedict-Webb-Rubin-Lee-Starling equation-of-state) property method is not selected, the binary parameters BWRKV (Molecular Size Binary parameter for the BWR-LS equation of state) and BWRKT (Molecular Energy Binary parameter for the BWR-LS equation of state) appear on the Properti... | Solution: Some property methods use the BWR-LS equation of state method to calculate transport properties such as viscosity (MULMX) and thermal conductivity (KMX). These property methods include PSRK, RKSMHV2, PRMHV2, SR-POLAR, RKSWS amd PRWS.
These parameters on these forms can be deleted; however, the forms cannot be... |
Problem Statement: How does Aspen Plus calculate property sets for vapor and liquid heat capacity at constant pressure? What is the route or model used for the calculation of real gas or liquid heat capacities?
Also, what is the difference between CP and CPIG Prop-Sets? | Solution: You can report the mixture heat capacity using the Property set CPMX. The pure component property set is CP. The valid phase qualifiers are V, L, L1, L2, S (solid) and T (Total mixture). The units can be mole or mass based.
Property set CP is the real gas or liquid constant pressure heat capacity at the tempe... |
Problem Statement: How is flash point estimated? The properties FLPT-PM and FLPT-TAG can be accessed in a property set, but how are they calculated? | Solution: Flash Point is a measure of the volatility and the inflammability of liquid petroleum mixtures. It is the lowest temperature at which a combustible material will give off enough vapor to form an flammable mixture with air.
Aspen Plus provides several properties representing different methods of calculating th... |
Problem Statement: I have the experimental data of heat of melting or heat of crystallization, how do I put them into Aspen Plus so that the Crystallizer or RGibbs can use them? | Solution: In Aspen Plus, the heat of melting and heat of crystallization is calculated by the difference in enthalpies between the liquid phase and the solid phase. Thus the experimental data can not be used directly with Aspen Plus since by default Aspen Plus does not use heat of melting or heat of crystallization for... |
Problem Statement: When using RadFrac to simulate a reactive distillation column with electrolytes, does the RadFrac block use Chemistry, or must the Reaction stages in RadFrac be specified? | Solution: When using the TRUE approach, RadFrac will use the Reaction | Chemistry as a source of reactions if the Reaction stages are not specified on the RadFrac | Reactions | Specifications sheet. If the Reaction stages are specified with a Reac-Dist or User reaction, the Chemistry will NOT be used. The code only all... |
Problem Statement: An Aspen SQLplus query displays the error box: | Solution: This error can appear if a query tries to fetch historical information for a tag pointing to a repository that no longer exists. Verify that all tags referenced by the query point to valid repositories.
Keywords: None
References: None |
Problem Statement: What are the tuning parameters for DMCPlus | Solution: There are a lot of parameters for DMCplus controller but these are the tuning parameters.
Steady State Tuning
-Feasibility stage
CV/ET Ranking - determine the order of give up in case of feasibility (Smaller the rank, more importance the limit.
Steady state ECEs - weighting factor to amount of give up withi... |
Problem Statement: It has been noticed on 64bit Server installs that the AuthWrapperSvc 1.0 Type Library is missing from SQLplus | Solution: The references can be added to SQLplus by making a registry update on the SQLplus host to add the win64 key for the typelib similar to the existing one for win32.
Open the registry editor (regedit) and go to key:
Computer\HKEY_CLASSES_ROOT\TypeLib\{EF401451-CF55-11D3-827A-00C04F12B1D3]\1.0\0
Beneath this ther... |
Problem Statement: How do you delete history points from Aspen InfoPlus.21 using Aspen SQLPlus? | Solution: There is no way to delete history values in InfoPlus.21. This is true using SQLplus or any other tool.
If you have entered data that you wish to remove from the database, the only thing you can do is change the status of the unwanted points to bad using the UPDATE statement in SQLPlus. This way they won't be ... |
Problem Statement: The Aspen Exchanger Design and Rating (EDR) suite of programs have cost information to permit the cost of the exchanger to be determined. Instructions for changing the unit of currency are described below. | Solution: From the main menu, select Tools | Data Maintenance | Units of Measure.  Select the Units Maintenance tab and then from the “Select Category� set to currency and then from “Select a Unit� find the appropriate currency.
The default cost in the program are Dollars (US) $, so on the right hand side se... |
Problem Statement: I have a flash convergence failure. How can I provide the information to AspenTech support without having to send my complete flowsheet? | Solution: You can add the following debug paragraph to the input file:
DEBUG FLASH-MSG=1
Whenever a FLASH is called, the specifications will be echoed to the history file, including composition, temperature, pressure, flash specs, etc.
If you set FLASH-MSG=2, the inline-Fortran for a Calculator block which you can use ... |
Problem Statement: How do I change the Total Licensed Point count that a particular InfoPlus.21 database is licensed for? | Solution: 1. Stop the database.
2. In the IP.21 Administrator, right click on the node name and select Set Point Count item from the context menu.
3. Enter the number of points that the database is licensed for, click OK and restart the database.
In the IP.21 Administrator, right click on the node nam... |
Problem Statement: What is the difference between positive list ID (i.e. LISTID=1) and negative list ID (i.e. LISTID=-1) in the Cimio_T_API program? | Solution: A negative list ID (i.e. LISTID=-1) re-declares the tag list on the Aspen Cim-IO server. In other words, it forces the creation of a new tag list which is recommended when using the Aspen Cim-IO T-API test client.
A positive list ID (i.e. LISTID= 1) assumes there is already a tag list created and uses it.
If ... |
Problem Statement: This Knowledge Base article explains why a user is getting the following error message
Error 0xC0040007 (3221487623) The item is no longer available in the server address space.
when trying to connect Aspen Info Plus-21 DA Server through OPC Client? | Solution: This error message is common, if the Tag name (normally call it as item id in OPC terminology), you are using does not exist or is incorrect in the OPC server. ( In this case Aspen InfoPlus.21 server is a OPC server.)
Also make sure, if the tag name contains special characters, to use double quotes () for the... |
Problem Statement: What is the difference between a guaranteed truck and a bill by shipment truck in AFO? | Solution: If guaranteed is checked this transport is then viewed by Aspen as a unit that will ?cost? the client ?X? hours (whatever hours appear in the transport Schedule) multiplied by the Cost per Hour. Proprietary units also need to be guaranteed if the driver is paid for his full shift regardless of workload. Any u... |
Problem Statement: This Knowledge Base article explains why Graphics Editor displays *** when viewing BAD data from Aspen InfoPlus.21. | Solution: The Graphics Display uses the QSTATUS to determine whether or not to display a value.
For the Graphics Editor to display *** when viewing BAD data from InfoPlus.21, the Key Level has to be marked as QSTATUS_BAD or the sample has to be a NaN (not a number) value. Additionally the Graphics Display will show ***... |
Problem Statement: The Aspen InfoPlus.21 Administrator allows you to change the date format used by Aspen InfoPlus.21.
How can a query determine the date format used by an InfoPlus.21 server? | Solution: Use the function date_format.
The following example illustrates the use of date_format.
case date_format
when 0
then write 'The date format is DD/MM/YY';
when 1
then write 'The date format is DD-MMM-YY';
when 2
then write 'The date format is MM/DD/YY';
when 3
then write 'The date format is MMM-DD-YY';
when ... |
Problem Statement: Why do the results obtained from Aspen HYSYS and Aspen FLARENET not match? | Solution: The results obtained for Aspen HYSYS and Aspen FLARENET only match when the kinetic energy term is not taken into account in the energy balance in Aspen FLARENET (set via the Calculations | Options | Energy Balance menu item).
The reason for this is the way the valve model is implemented in Aspen HYSYS: it ... |
Problem Statement: How are noise calculations performed in Aspen Flare System Analyzer? | Solution: A sample noise calculation can be found in the attached MS Excel file.
Keywords: noise, calculation, equation
References: None |
Problem Statement: What is the Body field on the Calculations page of the Tee Editor ? How does this affect Tee calculations? | Solution: The Body option allows you to define upon which of the pipeline diameters the Tee pressure drop calculations are based. The available options are:
Run - diameter is that of the inlet pipe.
Tail - diameter is that of the outlet pipe.
Branch - diameter is that of the branch pipe on the tee.
Auto - Aspen FLARENE... |
Problem Statement: Using the Aspen InfoPlus.21 Administrator, you can delete file sets one at a time. The attached query allows you to delete a range of file sets at once from a repository. | Solution: Start the Aspen SQLplus query writer and enable Intermediate Output.
Next, download the text file DeleteFileSets.txt attached to theSolution, copy the contents of the file to the query writer, and execute the query.
The query asks for a case sensitive repository name.
After receiving the repository name, the... |
Problem Statement: How do you add a new repository using Aspen SQLPlus? | Solution: We have samples of Aspen SQLPlus scripts available on Aspen InfoPlus.21 Server under the folder
...\AspenTech\InfoPlus.21\db21\sample_programs\TestAtIP21HistAdminSQLPlus
The script TestAddRepAndFS.SQL shows how to create repositories and multiple file sets.
Keywords: New repository
new filesets
add
SQLPlus
sa... |
Problem Statement: AspenTech SQLplus ODBC driver (ip21odbc.dll) is not listed in the Windows Data Sources (ODBC) GUI. | Solution: The odbcad32.exe that is referenced in the Windows Control Panel is only for 64-bit drivers.
The default AspenTech SQLplus ODBC driver is a 32-bit driver so you have to run the odbcad32.exe in the c:\windows\syswow64 directory:
1. Go to c:\windows\syswow64
2. Double click on odbcad32.exe
3. It will open the O... |
Problem Statement: Aspen Shell & Tube Exchanger (Tasc+) can either produce a tube layout from the values entered in the input file, or an interactive technique can be used to draw/customize a tube layout. This | Solution: described how the interactive tube layout feature can be used to customize the tube layout.Solution
The steps are as follows:
1. The Tube Bundle Layout facility is available in Rating/Checking and Simulation modes but not Design mode. The options are directly underneath 'Tube Layout' section on Input |... |
Problem Statement: What are the options for supplying Molecular Weight Distribution (MWD) for Polyfrac. | Solution: Polyfrac is primarily set up to work with streams that possess a polymer molecular weight distribution (MWD). However, a stream can acquire a MWD in only one of two ways:
It can created by a RCSTR, RPLUG, or RBATCH for models that include free radical or Ziegler-Natta kinetics objects.
It can be put into a f... |
Problem Statement: How to get data from Aspen InfoPlus.21 into a C# application using a memory-resident DataSet? | Solution: By using the .NET Framework Data Provider for ODBC, data can be read from Aspen InfoPlus.21 into ADO.Net DataSet. The System.Data.Odbc namespace will need to be included in the using directive.
In the attached file (IP21DataSetExamples.zip), there are 2 examples, one being a Windows Forms application and anot... |
Problem Statement: How can I set stream composition via a spreadsheet? | Solution: See attached file Composition set via spreadsheet.hsc. Numbers in column B represent non-normalised composition. Data is normalised in column C and exported to a stream.
There are two important points to note:
data must be exported for ALL components in the model
composition must be normalised
Finally, once t... |
Problem Statement: This sample query shows how to calculate monthly averages for a list of tags. | Solution: For each month, the query determines the amount of time in the month and uses the aggregates table to calculate the averages for each of the tags in the list, in this case ATCL101, ATCL102, and ATCL103 from the demo database. The query uses a temporary table to store the averages for each tag for each month.... |
Problem Statement: How to display time and date independent of the database date format. | Solution: Use the cast function specifying a new format.
I.e. WRITE CAST(CURRENT_TIMESTAMP as CHAR format 'DAY DD MONTH YYYY HH:MI:SS.T');
Would output in the following format
WEDNESDAY 08 MARCH 2006 14:21:10.8
Keywords: timestamp
cast
format
References: None |
Problem Statement: Scanning IO addresses multiple times adds network traffic and introduces errors in some Aspen CIM-IO interfaces. For example, Bailey SEMAPI returns the error Fatal 5 (ICI): Block already established as another point when an address appears more than once in an IO transfer list. | Solution: The attached query FindDuplicateAddresses looks through all IOGETDEF records looking for duplicate addresses contained in the field IO_TAGNAME. The query then reports which occurrences in which IOGET records contains duplicate IO addresses.
To remove an occurrence with a duplicate address, first turn off reco... |
Problem Statement: The value from column FACTOR in table WSPECS is used to convert weight based property to volume based equivalent. Below is a description of exactly how it affects the matrix structure. | Solution: Assuming we have one specification blend B+C:
Two components can be blended to B+C:
We have max sulphur content expressed in weight% set to 2.5:
In table BLNPROP we have quality data regarding sulphur content expressed in pounds per barrel (SPB):
If we know correlation between SUL( weight percent) and S... |
Problem Statement: How do I display the status, number of file sets, and active file set number for each repository? | Solution: The attached query displays the status, number of file sets, and the active file set for each repository in an Aspen InfoPlus.21 server.
Keywords: Active file set
Number of file sets
Repository status
References: None |
Problem Statement: This Knowledge Base article provides examples of Process Explorer Ad-hoc calculations. | Solution: Attached PDF document on thisSolution provides syntax examples and formula construction rules for Ad-hoc calculation that can be used in Aspen Process Explorer.
For a detailed explanation of the Time-Based Functions, please consult Aspen Calc Help File.
For a list of Aspen Calc functions that can be used in P... |
Problem Statement: When calling GetObject in SQL script for an excel file, receive an error message as below.
''Get object from ''<filepath>\<filename>.xls'' failed: Access is denied at line <number>.'' | Solution: This is generally due to the permission setting of the DCOM object.
1. Click on Start and click on Control Panel
2. Click on Administrative Tools and double click to launch Component Services.
3. Expand the container Component Services.
4. ... |
Problem Statement: Sample Query to check for an existing value in ENG-UNITS | Solution: The following query that can be used to search for an existing value in ENG-UNITS:
SELECT select_description FROM Select8Def WHERE name = 'ENG-UNITS' AND select_description like 'degC';
Keywords:
References: None |
Problem Statement: In aspenONE Process Explorer, comments, annotations, and replies are stored in InfoPlus.21 and cross-referenced to an InfoPlus.21 tag. With this functionality, there is an entry in ADSA that may be added named aspenONE Process Explorer Comments. This article discusses how to use this service. | Solution: When added to ADSA, the aspenONE Process Explorer Comments service has an option for Default Data Source with a checkbox option next to it. There is no impact of adding this service to any data source if the checkbox remains unchecked. If the checkbox is unchecked for all data sources listed in ADSA, then any... |
Problem Statement: What are different calculation modes such as Design, Rating / Checking, Simulation and Maximum Fouling? | Solution: There are four calculation modes in Shell&Tube / Tasc+
1. Design
2. Rating / Checking
3. Simulation
4. Maximum Fouling.
Design Mode
Design mode identifies one or more exchangers that will perform a thermal duty you specify, subject to limits on the maximum pressure loss y... |
Problem Statement: Ad hoc calculations for tags that have special characters in the name, like -, . etc., fail to work in aspenONE Process Explorer, Aspen Process Explorer and Aspen Process Graphics Editor.
For example, let's consider an Ad-hoc calculation that involves a tag Test-ATCAI
=Test-ATCAI*100.
The above c... | Solution: The tag in question needs to be enclosed in curly braces in the ad hoc calculation.
For example:
={Test-ATCAI}*100
Once enclosed in curly braces { }, the calculations function as expected.
Keywords: A1PE
Special Characters
Invalid Tag in Formula
References: None |
Problem Statement: How are LHHW kinetic reactions specified in Aspen Plus? | Solution: A general example of specifying LHHW reactions was added to the Aspen Plus help for version 2006.
Consider a reaction W + X Y + Z.
In the general case, the rate expression is:
If the reaction is non-reversible, the kinetic constants can be combined into the main constant k with its temperature dependency sp... |
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