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Problem Statement: Specific Enthalpy in EDR (Property Data--> Hot/Cold Stream Properties) is total enthalpy or enthalpy of pure component. | Solution: The Specific enthalpy in EDR under properties data hot & cold stream properties is the enthalpy of the stream (for the said compositions).
For example if the stream compositions is 40% Methanol & 60% Water, then the enthalpy is for this compositions & with respect to said temp & pressure conditions. (above s... |
Problem Statement: How to print process flowsheet in Aspen Adsorption V12? | Solution: In Aspen Adsorption, to print process flowsheet,
Click on the File | Page Setup menu option available on any flowsheet window to order multi-page printing of flowsheets.
Use the Page Setup dialog to specify:
How many sheets to use for the height and width of the flowsheet
Paper size
Orientation
Margin size
... |
Problem Statement: How to setup Chimney trays in Aspen HYSYS column? | Solution: In Aspen HYSYS, Chimney trays can be accessed through the sub-flowsheet of the column.
In the Column sub-flowsheet, double clicking on the column enters Tower: Main Tower window.
Select Ratings tab, Sizing page
Select Non-Uniform Tray Data
User should be able to scroll down in the Internal Type
Select Chimney... |
Problem Statement: What is causing inconsistency in result database error in Aspen PIMS and how to generate trace log file for Aspen PIMS machine that will help to investigate the issue of error Inconsistency in result database | Solution: The error of “inconsistency in result database” usually means that there is a problem in writing theSolution data to the output database. Since clustering is being used to run case executions, each child node needs to be checked that it can connect and write to SQL Server. This can be done in couple of ways... |
Problem Statement: How to resolve Matrix Generator error in Aspen Unified PIMS | Solution: When the above error occurs in Aspen Unified PIMS during model run then below workaround can we tried to fix this error.
Under the settings>>General settings>>Application>>Advanced>>Miscellaneous>>Uncheck the option Enforce RFG/CARB regulatory bounds.
Key Words:
Matrix Generator
Aspen Unified
Keywords: None
... |
Problem Statement: Two types of the license are available: Token and Non-Token (standard). Similarly, Aspen software is distributed in two separate installation media, one for token and another for standard. If the license file is for a token license, the token media must be used; similarly for standard license file. T... | Solution: To force AspenIQ to use the Non-Token type license, the user must not register their License server containing Token type license keys. This can be done as follows - refer to the screen shot below:
Launch the SLM License Manager from the Windows Start button on the server where AspenIQ is installed
Select Con... |
Problem Statement: Aspen Online gives error Failed to check out a license | Solution: In Aspen Online user may face such issue of “Failed to check out a license
The issue could be caused if the tokens are limited & not available to run the Aspen online model (in the background Aspen Plus or Hysys Model could be continuously closing & opening with certain time intervals)
if the user does not h... |
Problem Statement: How do I use “Heat Exchanger” tab available under home tab in Aspen Plus to transfer Heating/cooling curve data to EDR | Solution: This option is very helpful if user is working on the simulation in Aspen Plus & wants to study the detailed heat exchanger design in separate EDR, use this option to transfer heating/ cooling curve data like Aspen Properties, flowrate & other process conditions from Aspen Plus to EDR (Aspen Exchanger design ... |
Problem Statement: What is the significance of W908 warning message in Aspen PIMS? | Solution: The value in PGUESS can cause wide bound to be made wider if the current bound (determined by other model data) does not include this PGUESS value. Powers of 10 is used to widen the bound. The SCALE value will always win, but you may still see W908, since that logic is checked before SCALE is applied. If the ... |
Problem Statement: When deleting models from AUP, they disappear from the Users Interface, but stay in the Input DB. This can cause storage issues on the long run so, how can I purge deleted models from the Input DB? | Solution: First go to Microsoft SQL Server Management Studio and connect to the server that stores your Input DB. Expand the Databases section, look for your Input DB and take a look at the aumodel.Models table. There is a column named IsDeleted. When a model is deleted from the interface, this column will be equal to ... |
Problem Statement: How would you use Aspen Plus to model the Sulfuric Acid Process? | Solution: Attached is an example of modeling the Sulfuric Acid Process with Aspen Plus. To use the example download the .zip file and extract all the files to one folder. Double click on the .bkp file to open the simulation.
Note that this example includes a kinetic subroutine for the conversion reactors in the form of... |
Problem Statement: How to add RON and MON as a property in a stream result? | Solution: 1. Go to the properties environment/Customize/Type ROC-NO and MOC-NO as user parameters. Those are the parameter names for RON and MON respectively.
2. Go to Components, create a new Assay and enter the distillation curve data. The users can specify random temperatures since those will not be used for the ... |
Problem Statement: What stage is the Vapor Flow / Feed Flow (V/F) calculated for ConSep Column? | Solution: V/F is a ratio of vapor flow to feed flow. When a ConSep block solves for a feasible design, it will show the stripping and rectifying V/F results on the Results | Design page. The vapor flow rate for these sections is calculated at the stripping/rectifying boundary i.e. the feed stage. For the rectifying sec... |
Problem Statement: DMC3 Builder simulation allows to create customized columns settings through the column settings dialog box.
This mechanism relies on .xlm files that can be imported.
How do I export my own customized setting for the current column setting I have?. | Solution: You can set up your simulation column sets and this saves them into the SSCSimulationTemplateUser.xml file located in the C:\ProgramData\AspenTech\APC\Vxx\Builder\config directory.
You can then save a copy of this file and move it to a new machine and import it.
Remember that any time you made changes with c... |
Problem Statement: When a new CIM-IO logical device is created then registration of Miscellaneous tags and PID tags for the new device fails in Watch Maker. The following error message is displayed: Tagname not found in server database.
This happens when the logical device is added to the “Cimio_logical_devices.def” f... | Solution: If this logical device is newly added, the corresponding InfoPlus.21 task must be restarted from Aspen InfoPlus.21 Manager, before data collection can be started. This may be done as follows.
Please launch InfoPlus.21 Manager from the Windows Start button - refer to the screen shot below.
Find the correspondi... |
Problem Statement: After upgrading the APC software, we became to be unable to open Simulation file(.PSM) which was created before the upgrade in the DMCplus Simulate application.
Is this usual behavior? | Solution: Unfortunately, even if DMCplus Simulate is newer than the environment where “.PSM” was created, “.PSM file” is not compatible with different version of APC for now.
And this is not only applicable for the version difference but also for patch level difference.
(For example, .PSM file which is created in the C... |
Problem Statement: InfoPlus.21 Obsolete Tasks in V12.0 | Solution: The table below lists tasks that are generally not required by current versions of Aspen InfoPlus.21 systems (version 3.0 and later). Most of them do not appear in the InfoPlus.21 start task list that is distributed with the current versions of Aspen InfoPlus.21. However, they could still show up after an upg... |
Problem Statement: Before Version 12, some MES services were installed with an unquoted service path that contains at least one whitespace. A local attacker can gain elevated privileges by inserting an executable file in the path of the affected service.
For example, below are two MES services with untrusted path:
Cal... | Solution: The issue has been fixed on MES V12 if the software is a new install instead of an upgrade. If the MES software is below V12 or upgraded to V12, please use the below workaroundSolution to address the issue.
The workaroundSolution is adding a double quote to the ImagePath of vulnerable services in Registry Ed... |
Problem Statement: Does Aspen Cloud Connect need special license to be activated? | Solution: Yes, and it will depend on the destination servers that will be enabled. Aspen Cloud Connect include 3 different license models in V12:
Aspen Cloud Connect Express: No license key is required.
Aspen Cloud Connect provides the out of the box (OOTB) feature to work with all Aspentech products as destination.
A... |
Problem Statement: SOAP Exception - Unsupported response content type | Solution: The cause should be some other software is writing to port 8888 of this machine, therefore this error/warning message is shown to users.
Review that no other application is using this port.
Keywords: SOAP
References: None |
Problem Statement: Is it possible to see an aspenONE Process Explorer (A1PE) saved trend on Aspen Process Explorer? | Solution: It is not possible to transform a saved trend on A1PE to Aspen Process Explorer.
However you can open the saved trend on A1PE, select all the tags and then drag and drop them on the Aspen Process Explorer document.
Keywords: Trend
References: None |
Problem Statement: In order to add more entries to a Get Transfer it is required to turn OFF the field IO_RECORD_PROCESSING, then the data collection stops until you turn IO_RECORD_PROCESSING back to ON. | Solution: This behavior is expected, turning OFF the IO_RECORD PROCESSING will result in not having a TagList available on the Cim-IO Server, and therefore you can not get data from your OPC or DCS.
Once you turn ON the IO_RECORD_PROCESSING, a new TagList is created and new data will come.
In order to prevent the dat... |
Problem Statement: What to do when Apache Tomcat logs are taking much space on the server?
Located under C:\Program Files (x86)\Common Files\AspenTech Shared\Tomcat8.0.36 Bakup\appdata\scheduler\logs | Solution: 1.- The logs can be deleted when required as those are not required for Tomcat to be running.
2.- Unfortunately there is NO “Clean-Up” Option for the Logs, only the ability to change the Logging Level to reduce the amount of Logging that occurs (Apache Tomcat is a 3rd Party tool, so we are unable to add func... |
Problem Statement: How to temporary disable the switchover between Cim-IO Redundant Servers? | Solution: For just temporary disable the switchover you will only need to stop TSK_DETECT.
If there are other logical devices for which you do not want to temporary disable the switchover, then you will need to just turn OFF the occurrence related to that Logical Device from the TSK_DETECT record in the Administrator.
... |
Problem Statement: Aspen Production Control Web Server (PCWS) is working on the Microsoft IIS(Internet Information Services) platform.
There are multiple log files in the “C:\inetpub\logs\LogFiles\W3SVC1” directory (and other directories at the same level as W3SVC1). They end in .log and are usually named exNNNNNN.log,... | Solution: These files belong to Microsoft's Internet Information Service (IIS); this is the web server present on Windows server OS. More information can be found on Microsoft's website in Knowledge.
Whether or not to enable logging and how many of the logs to keep will vary depending on the needs of the site. Usually ... |
Problem Statement: After editing long CCF calc in the note pad, we pasted it on the one CCF calculation.
Then noticed that the end part of the pasted calculation is not reflected to the CCF.
Are there any limitation of the number of the characters for CCF calc? | Solution: There is max number of character limitation for CCF calc.
The maximum number is 1024.
You cannot enter additional character if the number of characters reaches to 1024.
If you encounter this situation, please consider to divide the calculation into two calculations.
Keywords: DMCplus Build
CCF
Calculations
Re... |
Problem Statement: DMC3 Builder shows Failed to transfer application when deploying RTE controller | Solution: The RTE service creates temporary files in C:\Windows\Temp with names such as ~91AE.tmp, tmp9D21.tmp, etc. These temp files should get cleaned up by the RTE service automatically once the operation completes. But there are instances where these files are not cleaned up properly. Once the number of files rea... |
Problem Statement: Model Switching is a utility on DMC3 equivalent to CCF Switch on DMCplus Controllers. It can be used to implement relationships and file replacements that enable applications to switch models and/or tuning sets while the DMC3 application is operating Online, Offline, or in Simulation Mode. | Solution: Requirements for using Model Switching:
1.- To use Model Switching it is necessary to have Engineer Permission
2.-It is necessary to have the mdl or mdl3 (in case the current project is DMC3) files and/or .tuningset file already exported and located in a known directory
3.- Changing the active tuning set m... |
Problem Statement: Cannot see options menu when clicking any variable in the Production Control Web Server (PCWS). | Solution: Double check the AW_HOSTNAME field in the AW_CTLDef record in InfoPlus.21 Administrator is the same as the host name shown in the PCWS area (top part of the Operations View).
Keywords: Production Control Web Server, PCWS, APC Web Interface, pop up options menu, InfoPlus.21 Administrator, Definition records, A... |
Problem Statement: The user gets one of the below error messages when trying to debug an Aspen Fidelis model in Visual Studio, and Fidelis shuts down.
System.BadImageFormatException: 'Could not load file or assembly 'Xceed.Chart.GraphicsGL.v4.3, Version=4.3.100.0, Culture=neutral, PublicKeyToken=ba83ff368b7563c6' or o... | Solution: This error message is typically caused when Use Managed Compatibility Mode is not selected. Please follow the steps bellow to select Use Managed Compatibility mode.
1. Open VstaProjects (you can do this by opening a model in Aspen Fidelis and clicking on Write Key Routines)
2. Click on Tools > Options
3. Cl... |
Problem Statement: What is the SLM License Profiler and how do you use it? | Solution: The SLM License Profiler allows you to obtain specific information about the licenses available on an SLM license server or license file. Typically, you will use the SLM License Profiler to verify licenses on a license server or license file and to diagnose license related problems. Non-administrators can als... |
Problem Statement: How does EDR calculate baffle cut if not specified in Rating/Checking mode? | Solution: For single segmental baffles, it is set so that free flow area in the baffle window is roughly equal to the crossflow area at the exchanger center line. The nominal value is rounded to the nearest 5%.
For both double and triple segmental baffles, the outer baffle cut is determined in the same way as the sing... |
Problem Statement: How to see the correct order and the units of the Results for a Front Head Cover in S&T Mech? | Solution: In Aspen Shell & Tube Mechanical the Rich Text output for the second panel of Front Head Cover Results|CodeCalculations|Cylinders/Covers are misaligned and so some values are associated with the incorrect labels.
For seeing the results and units in the correct order, run the simulation, go to the same panel ... |
Problem Statement: A compressor is specified with a single curve at reference speed. If the operating speed is changed, then the results are different. How does Aspen Plus calculate these results with only a single curve specified? | Solution: If fan laws are applicable, then Aspen Plus employs fan laws to calculate a new curve at the operating speed. Fan laws are only applicable for Head, Head Coefficient, Power and Efficiency curves.
Exph, Expp, and Expe are the fan law exponents, and N is shaft speed. The fan law exponent values are set on the... |
Problem Statement: What is the role of NIST Thermal Data Engine (TDE) in Aspen Plus? | Solution: The NIST Thermal Data Engine estimates pure and binary property parameters based on molecular structure
Drawing tool from Home ribbon Tools group
Retrieve experimental data for pure components or binary mixtures of pure components
It can be run from the Home ribbon Data Source group
Keywords: Aspen Plus, NIST... |
Problem Statement: What are the utility options available that Aspen Plus can calculate? | Solution: A Utility is an option in Aspen Plus that can be used to calculate:
Energy usage
Utility usage (for example, pounds of High Pressure steam/hr)
Energy/utility cost
You can assign a utility to any block where Duty or Power is either specified or calculated (except MHeatX)
To calculate the required utility flow ... |
Problem Statement: It is possible to export the master model of a DMC3 controller as a .gdm or .gda file using DMC3 Builder to then import the model into Aspen GDOT or Aspen Unified GDOT Builder. | Solution: To export the Master Model of your controller you need to go to DMC3 Builder, click on the Master Model and under the Model Operations ribbon click on Conversion.
This will prompt up the Convert Model window, here is where you can export models from a DMC3 controller to a GDOT model file or vice versa; in th... |
Problem Statement: How do the WEEK_NUMBER and ISO_WEEK_NUMBER functions work? | Solution: There are three main systems for calculating the week numbers of the year:
ISO system.
The first week of the year is the first week that contains Thursday. This is also sometimes stated as the first week having at least 4 days or the week containing January 4th.
USA system.
The first week of the year is the w... |
Problem Statement: What do Equipment Symbol Shape and Equipment Footprint mean and what are they used for? | Solution: Equipment Symbol Shape and Equipment Footprint are fields that are shown on the Spreadsheet Import/Export report generated from Aspen Capital Cost Estimator.
Equipment Symbol Shape
ACCE’s process equipment is divided into different categories. Each category is assigned an item symbol for identification purpo... |
Problem Statement: How can I share equipment data from Aspen Capital Cost Estimator into Aspen OptiPlant? | Solution: Both Equipment Shape and Equipment Footprint data are important pieces of information to transfer from ACCE into OptiPlant.
ACCE’s Spreadsheet Import/Export Report, namely the API Report, has the capability of printing Equipment Shape and Equipment Footprint when the Print equipment coordinates option is set... |
Problem Statement: When Importing the Spreadsheet Import/Export Report (or API Report) from ACCE, an error about the Equipment not having a valid “Equipment Symbol Shape” in the ACCE Worksheet shows up:
Equipment ID: ‘XXX’ does not have a valid Equipment Symbol Shape in the ‘XXX XX’ worksheet of ACCE file.
Why does t... | Solution: The reason is that the spreadsheet was imported without an Equipment Symbol Shape, which is used by Aspen OptiPlant to map the equipment from ACCE into an equipment from OptiPlant.
If an estimator generates the ACCE Import/Export Report (or API Report) WITHOUT selecting the Export data + plotplan results opt... |
Problem Statement: What is the server URL format for connecting to ABE server through Aspen Plus/HYSYS Datasheets or a web browser? | Solution: To use the datasheet functionality in Aspen Plus and Aspen HYSYS, you will need to either connect to an ABE enterprise server or have the ABE local server installed on their machine. If you do not know which configuration is being used, then contact your ABE administrator or IT.
For an ABE local server confi... |
Problem Statement: The out-of-the-box engineering data model was updated in ABE V12. Due to changes made to the data model, users who are moving from ABE V9 to ABE V12 are advised to run this migration script after restoring their workspace data. | Solution: We provide the attached migration script to facilitate the data model migration clean-up so that minimal user interaction is needed. Please refer to the guide in the attachments for steps on how to run this rule.
Note that the attached migration script should only be used after users have already completed t... |
Problem Statement: In order to publish a Process Unit simulation from Aspen Unified PIMS to GDOT you need to configure the simulation first from the Flowsheet page to be able to publish it using a site catalog and add the component on Aspen Unified GDOT. | Solution: Let us use as an example that we want to publish the process unit “Hydrocracker” that we are using on a Planning Model, for a newly created site catalog, if we go to Model Data -> Catalog -> Site Catalog we will not have the option to add it until the simulation is configured:
To configure the unit, first we... |
Problem Statement: When opening the Configure Online Server functionality in the APC Online server, an error message shows up with the next message:
“This Windows user account does not have privilege to update the ‘cimio_logical_devices.def’ file.
You cannot configure, enable, or disable this server.” | Solution: When you open the Configure Online Server functionality, the software attempts to open the cimio_logical_devices.def file of the computer, if the file is already open in a text editor (such as Notepad) or in the background by other AspenTech software, this error message will show up preventing the configurati... |
Problem Statement: It is a known issue that sometimes when we try to open DMC3 Builder the title screen displays and the program DMC3Builder.exe starts but after a few seconds the task ends, there are some troubleshooting steps that can be followed to solve this. | Solution: A corruption on the files that DMC3 Builder uses to start can cause the error of the program showing the title screen and the task DMC3Builder.exe starting but then crashing:
Looking on the Event Viewer under Windows Logs -> Applications we can find error messages that say that DMC3Builder.exe was closed due... |
Problem Statement: What versions of the compiler are supported? How do I troubleshoot problems setting up the compiler configuration? | Solution: Aspen Plus supports a variety of Intel Fortran compiler versions along with a variety of Visual Studio linker versions.
By default, the current versions of Visual Studio do NOT install Visual C++ (and associated tools). These are needed with Aspen Plus; hence, users must select the Custom installation option... |
Problem Statement: New V12.1 CP1 DMC3 Builder feature allows to override the deployed targets and operator limits | Solution: Starting V12.1 CP1 the user can change the values of the external targets and operator limits connected to DCS tags at redeployment.
Consider the following scenario where you have a running DMC3 controller connected to interface points for the operator limits. Due to a prolonged shutdown or interface initiali... |
Problem Statement: What is the meaning of “Device Unit” or simply “Unit” when configuring a Cim-IO connection to collect data either through Aspen Watch or collect.exe? | Solution: When configuring IO connections to collect data we can encounter the term “Device Unit”, “Unit”, or “Unit Number” for Cim-IO connections, what does this mean?
If we refer to the Cim-IO user guide, we can find a thorough explanation:
IO_DEVICE_UNIT
“Specifies the device unit number through which the values ar... |
Problem Statement: Sometimes, depending on the complexity and structure of a simulation, it can turn difficult to solve and get results. Equation Oriented is a useful way to converge simulations and other additional benefits in Aspen Plus. | Solution: The video attached to this animated tutorial explains what Equation Oriented (EO) is and how it is different from the default Sequential Modular (SM) mode. It is explained how to change a simulation from SM to EO mode and some basic characteristics and advantages of this run mode.
Main topics covered in this... |
Problem Statement: In real life, controllers have small delays between the read values of the Process Variables and the actual number in the equipment at that point in time. | Solution: In the following video, it is shown how to use a transfer function to create a delay between the PV values and the controller readings:
Basic steps:
1.- Set up a simulation with working PID controller(s)
2.- Add a transfer function, set up the PV ranges and check the Delay box.
3.- Set the controller PV sou... |
Problem Statement: How to create a custom group of variables for APC applications on PCWS, additional to the default “All Variables”, “Independents”, and “Dependents”. | Solution: On a situation where we have an APC controller with too many variables and we want to “filter out” the most important variables for better monitoring, we can create a custom group additional to the default “All Variables”, “Independents”, and “Dependents” on the Aspen APC Web Interface.
Let’s say we have the ... |
Problem Statement: Is it possible to model a solid-liquid-liquid-vapor electrolyte system? | Solution: Liquid-liquid (LLE) systems can be modelled with ElecNRTL, but there are several important steps that must be taken. SeeSolution 4402 for details. These systems can include vapor and/or liquid.
The attached file that can be opened in Aspen Plus V10 and higher uses the True Component approach to model a water ... |
Problem Statement: Configuration details for using the RDBMS data source component in conjunction with an Oracle database aren't clear. This | Solution: provides details for setting up this connection.Solution
On the Process Explorer client machine, check the Oracle client connection to the relational database:
Start | Programs | Oracle - OraHome92 | Configuration and Migration Tools | Net Configuration Assistant
On the Net Configuration Assistant: Welcome sc... |
Problem Statement: Is there a relatively quick and easy way to determine how many tags (as well as which ones) are in a specific Aspen InfoPlus.21 (IP.21) file set? | Solution: Yes! Open the Aspen InfoPlus.21 Administrator and do the following steps:
1. Select a specific History repository:
2. Right click a specific file set and choose 'Summary...':
3. On the Summary dialog, put a very large number (bigger than the expected number of tags, like '99999') in the No. of Tags to ... |
Problem Statement: I have a directory of templates (.apt) files. Is it possible for Aspen Plus to use this directory as the default?
The default directory is in a system folder:
C:\Program Files (x86)\AspenTech\Aspen Plus V8.x\GUI\Templates
This directory is not really suited because users need administra... | Solution: If you store your template files in this folder:
C:\ProgramData\AspenTech\Aspen Plus <version>\Templates
Then they will be available when you click My Templates when starting a new run from a template. This default location cannot be changed. If you want to point to some other network directory, u... |
Problem Statement: In Aspen HYSYS it is possible to enter the efficiencies of the column stages as individual inputs. However, it is also possible to create groups of stages to simplify the input of values. This is particularly useful for columns with many stages. | Solution: Go to the Column Parameters and select the Efficiencies section. Select Efficiency Type as “Overall” as this will allow to enter the efficiency of the stage as a whole and not of particular components. Then select “Grouped” on Efficiency Values. This will make a new section appear in the window specified as E... |
Problem Statement: How to download the Surface Jet Pump Unit Operation Extension from Aspen Hysys V12.0? | Solution: For downloading the Surface Jet Pump Unit Operation Extension, inside Hysys V12.0 and following versions follow the next steps:
1. Inside Aspen Hysys go to Resources and click on the Aspen Knowledge icon.
2. Internet windows will open, on that page look for the Surface Jet Pump Unit Operation Extension.
3. C... |
Problem Statement: How to modify the True Boiling Point (TBP) values shown in the Stream Properties to be shown in a different basis? | Solution: The TBP values available in the stream properties are shown by default in a volume basis and at specific percentage cuts, but this information can be adjusted to the user´s needs.
This can be done in the Correlation Manager, which can be launched by clicking the little arrow at the bottom right corner of the ... |
Problem Statement: How to use Aspen Custom Modeler model inside Aspen Plus? | Solution: The Aspen Custom Modeler (ACM) files need to be added to Aspen Plus in each computer that will use the Aspen Plus file. For adding the ACM models follow the next steps:
Open a new Aspen Plus file, in the Simulation environment go to Customize ribbon, select Manage ACM Models.
This should open the ACM Models... |
Problem Statement: How to modify the time communication in Aspen Plus Dynamics? | Solution: For modifying the communication time in Aspen Plus Dynamics follow the next steps:
1. Go to the Run menu.
2. Select Run Options...
3. In the pop-up window Time control/Communication modify the value that you want for having the communication enter the value of the communication intervals in Communication. Th... |
Problem Statement: How to add a correct name to a variable for declaring it in Aspen Plus Dynamics? | Solution: For declaring a variable in Aspen Plus Dynamics it needs to have a specific structure for the name, this structure contains the next rules:
1. Any name starting with a letter.
2. Up to 27 letters or numbers (it is not
case sensitive).
3. Variable type is one of the predefined variable types, which gives a de... |
Problem Statement: It is possible to find wrong results in the viscosities calculated in HYSYS for an oil manager composition attached to a stream. There is a possible workaround for this issue. | Solution: Depending on the fluid package selected in the Properties Environment of HYSYS, it is possible to select the viscosity calculation method in the Fluid Package Options. The default method that is used is HYSYS viscosity. If the viscosity results obtained when using oil manager are far from what is expected, it... |
Problem Statement: HYSYS shows the error message “How to solve the error message The CAPEOPEN 1.1 Link Extension is not registered. Please register it to gain access to this operation. | Solution: An extension needs to be registered to solve this issue.
The file to be registered can be found in the location C:\Program Files\Common Files\Hyprotech\CAPE-OPEN
The dll file that needs to be registered is found in this folder with the name of ActiveXtender11.dll
To find more details on how to register an ex... |
Problem Statement: An error is observed when attempting a test connection between the OPC HDA server and Aspen Mtell server through the Test button under Configuration --> Settings --> Sensor Data Sources on Mtell System Manager.
The following error is also observed when loading the HoneywellPHD adapter URL on the int... | Solution: To solve this issue, it is necessary to perform the next procedure:
Go to the Internet Information Services (IIS) Manager, click on the server and double click on ISAPI Filters.
Look in the Executable column for any executable path containing two backslashes. Right click on edit and find the double backslashe... |
Problem Statement: When editing a datasheet in Excel Datasheet Editor or the web Datasheet Editor (in HYSYS, Plus, or web Explorer) there is an Aspentech and ABC corp logos but there is no option to change them. | Solution: It is possible to easily customize a PSV datasheet with no experience with Aspen Basic Engineering (ABE) i.e. without using the ABE Datasheet Definer
TheSolution is to export the datasheet to Excel, this will detach the file to the ABE server, making it totally independent and ready to print, there are 2 pat... |
Problem Statement: Are there any third-party products that need to be installed for creating custom reports in the New Reporter? | Solution: SQL Server Management Studio is used to create and modify custom reports. 64-bit Microsoft SQL Server Version 2014 SP2 is the recommended choice to modify the database instance (Icarus_User120) installed by Economic Evaluation.
Microsoft SQL Server 2014 Service Pack 2 (SP2) Express can be downloaded from the... |
Problem Statement: Since Aspen Watch records have a different structure on their repeat areas compared to InfoPlus.21 analog records, when trying to extract information from the aggregates using a SQLplus query you need to specify the field you are looking for on Aspen Watch records, unlike with InfoPlus.21 records whe... | Solution: On the InfoPlus.21 analog record repeat areas, the main type of numerical data that is being stored are the IP_TREND_VALUEs.
If we wanted to extract some basic information from the aggregates (let’s say the maximum and minimum values every hour for the last couple of days), the simplest SQLplus query that we ... |
Problem Statement: Is it possible to define the unit material cost for a component using different currencies? | Solution: It is possible to set up multiple currency conversions for a project so that this can be used to enter the material cost of a component. To do so please follow the steps below:
In the Project Basis View go to the Currency form
In the External Currency window that will display, open the Specifications optio... |
Problem Statement: How are the Mach number and Rho V2 calculated in a valve? There are no results on the upstream side of the summary tab of a valve. | Solution: In Aspen Flare System Analyzer for a relief valve and a control valve the Mach Number and the Rho V2 are reported in the summary tab of each valve and calculated as follows:
Mach number: Includes columns for both Upstream and Downstream. The Mach number is calculated using the following equation:
The Mach ... |
Problem Statement: Each time I try to open an example file from Plus Dynamics I get the following error message:
Cannot load problem XXX, working directory is not writeable. If you are trying to load from a read-only location, try checking 'Allow setting of working folder location' on the Preferences tab of Tools/Setti... | Solution: Close the error message dialog, in the main menu go to Tools > Settings > Preferences tag and check the “Allow setting of working folder location” checkbox. Click Apply to save changes and then OK to close the window.
You should now be able to open any Plus Dynamics built-in example file.
Keywords: Example f... |
Problem Statement: How to create an input file for an Aspen Plus simulation? | Solution: Aspen Plus input files are compact summaries of the specifications for a flowsheet simulation. An input file can:
Be used as the input file for a stand-alone Aspen Plus engine run
Provide a compact summary of the input specifications for a simulation (for example, to be included in a report)
Provide the docum... |
Problem Statement: How to display Nozzle in OptiPlant Model. | Solution: Procedures
Go to View | Show/Hide | Nozzles.
When the option is selected, it show the nozzles on all the equipment having pipe connections.
The nozzles show up on the equipment for even those pipes that have failed to route.
To hide the nozzles, select the option Nozzles again to toggle the selection off.
N... |
Problem Statement: Why OptiPlant is throwing C++ Runtime Error upon exporting a 3D DXF file? | Solution: This error message will appear if there are any spaces or special characters present either in the project folder name or the project folder path leading to it. So, in order to get rid of this issue please make sure that the project folder name or path does not contain any spaces or special characters.
Keywor... |
Problem Statement: OptiPlant to AVEVA E3D/PDMS interface - On E3D/PDMS machine | Solution: OptiPlant shares a Bi-directional interface with AVEVA E3D/PDMS. This document showcases the procedure to transfer Equipment, Structure, and piping form OptiPlant to E3D/PDMS once you have all the files from OptiPlant.
On E3D/PDMS Machine:
This section highlights the pre-requisites and steps to import the Op... |
Problem Statement: OptiPlant to AVEVA E3D/PDMS interface- On OptiPlant Machine | Solution: OptiPlant shares a Bi-directional interface with AVEVA E3D/PDMS. This document showcases the procedure to transfer Equipment, Structure, and piping form OptiPlant to E3D/PDMS.
On OptiPlant Machine:
There are a few pre-requisites that the user must follow prior to use this interface. The pre-requisites are as... |
Problem Statement: How can I access HYSYS special parameters via VBA e.g. cricondenbar? | Solution: The given code helps user to access Cricondenbar Pressure/Temperature, Cricondentherm Pressure/Temperature & Solid/Ice formation temperature.
Dim hyApp As HYSYS.Application
Set hyApp = CreateObject(HYSYS.Application.V12.0, )
hyApp.Visible = True
Dim hyCase As SimulationCase
Set hyCase = h... |
Problem Statement: Why are the mole flows specified for a stream different from the ones appearing in results for my electrolyte stream? | Solution: It could be confusing at first sight to observe different values of the components´ molar flow rates in the input and results sections. This situation happens when using the true approach with Chemistry. The definitions of the reactions present is in the Chemistry folder from the Properties environment. Usual... |
Problem Statement: What is AspenTech’s policy about mixed versions and side by side installations of APC software? | Solution: Side-by-side installations of APC software (two different versions of the same product, like APC Desktop , installed on one server) is not supported.
Mixed versions of APC products (where the web server is a different version than the online server, for example) is allowed with certain conditions. However, f... |
Problem Statement: How to set up Cim-IO for IP.21 (Cim-IO for Set-Cim) to read tags from the IP.21 database into Aspen Watch as inputs for Custom Calculations? | Solution: Aspen Watch provides a default method of creating records in the InfoPlus.21 database and reading/writing from them via Miscellaneous Tags. By creating a Miscellaneous tag in Aspen Watch using “None” as the IO Get Record Type, there is a record automatically created by the same name under the Definition Recor... |
Problem Statement: Sometimes the startup of Aspen InfoPlus.21 fails with the indication of problems with one or more of the history filesets.
The normal procedure for solving the problem would be for the user to try to run the executable called h21arcckwizard.exe which is located in the directory...
drive:\.....\Aspe... | Solution: TheSolution is to open a Windows OS Command Prompt (formerly called the DOS Prompt).
Change Directory to
drive:\.....\AspenTech\InfoPlus.21\C21\H21\bin
Click on Enter after typing
h21init.exe
The cursor will just be blinking.
Leave the command prompt window open in that state.
Now open the Repair Archive Wi... |
Problem Statement: If you are upgrading your Aspen InfoPlus.21 database and at the same time migrating to a new server then you will undoubtedly need to use the h21chgpaths.exe utility to alter the history fileset paths to reflect the new location of the database.
If you do not adjust the fileset paths, you may be unab... | Solution: #000062839 for more information on how to properly move or upgrade an InfoPlus.21 database.Solution
!!!! SAVE A COPY OF CONFIG.DAT BEFORE USING THIS UTILITY !!!!
This file can be found in the following directory C:\ProgramData\AspenTech\InfoPlus.21\c21\h21\dat
The utility is called 'h21chgpaths.exe' and it ... |
Problem Statement: To fully secure an Aspen InfoPlus.21 database, it is desirable to give most end-users limited access to the records held within it. Nevertheless, if such users also need to make full use of features such as Statistical Process Control (SPC), Key Performance Indicator (KPI) or Golden Batch Profile (GB... | Solution: Given that we want end-users to have limited privileges within the database but open access to some records, it does mean that record level security must be used.
Consequently, the security role that these users belong to should be given (Read, Write, Create, Delete) Database level permissions.
To do this, se... |
Problem Statement: The capabilities of using SQLplus queries for a standard IP.21 database are exactly the same as with using them for an Aspen Watch IP.21 database. However, Aspen Watch adds additional records that are applicable specifically for APC applications, which may have different names for areas where data is... | Solution: Finding DMCplus / DMC3 Entries Records and Data in IP.21
The DMCplus and DMC3 Entry Dictionaries (part of Help Files) include the Aspen Watch record information to help the user locate where that value gets stored in Infoplus.21 Administrator. This information can then be used to construct SQLplus queries to... |
Problem Statement: In some scenarios, Aspen Recipe Explorer clients and MS SQL Server are all running in servers which are not in a domain but in a workgroup. Recipe Explorer requires Windows Authentication to login database, and this requires the interactive account all exist in SQL Server and Recipe Explorer clients,... | Solution: The steps to resolve this problem:
1. Create an account with the same name in Recipe Explorer and MS SQL Server, update them to have same password. In the Recipe Explorer client, this account can be in Users group or other group has permission to interactive and invoke Recipe Explorer; In the MS SQL Server, t... |
Problem Statement: How do I resolve access denied errors to Aspen Production Control Web Server with domain-based user groups? | Solution: If this is a role-based access configured for application, it will be mandatory to ensure the below:
- Make sure to Add or Select/Update the appropriate Host name in the top section of the Security page (Configuration Tab) in PCWS.
- When configuring role permissions, the Host name should be the name of the... |
Problem Statement: Is it possible to make unique | Solution: Id’s in Aspen PIMS (Merge 2 result.mdb database)? How we could identify the differentSolutions in multiuser environment using common database?
It was thought that theSolutionID is unique but it was found:
So different users on different machines can create the sameSolutionId but storing them in the same data... |
Problem Statement: You cloned a failure agent, but you cannot train the clone. When editing the cloned agent in Aspen Mtell Agent Builder, the failure the original agent was trained on does not appear as an option under Failure Work Items.
Example:
Original Agent
Cloned Agent | Solution: It is likely that this work order is no longer marked as a failure in the Failure Library. If this is the case, you should see circular arrows next to the original agent icon.
To train the cloned agent on this failure, you will need to remark it as a failure in the Failure Library.
In Agent Builder, navigate... |
Problem Statement: Trouble shooting problems with the Production Control Web Server | Solution: Utilize the following trouble shooting guide:
After upgrading PCWS, some web browsers show script errors or do not display the Navigation Bar
Solution Access the web page and dismiss any errors, then press Ctrl-F5 to force the browser to fetch all web page content from the server and refresh the browser cach... |
Problem Statement: Cannot see the Aspen Process Controller (APC) application on the Aspen Production Control Web Server (PCWS). | Solution: The Aspen Process Controller uses the RTE process to communicate with the Aspen Production Control Web Server.
If the APC application is running, then the the RTE service is running.
Go to the Configuration page of the PCWS and make sure the RTE application is checked and that the server name of the APC is li... |
Problem Statement: When Aspen InfoPlus.21 (IP.21) server(s) and aspenONE Process Explorer (A1PE) web server are installed in different geographical locations (on the Wide Area Network aka WAN), there is a chance that process trends and graphics may be significantly slower than if the servers resided on the Local Area N... | Solution: Please follow these steps:
Set <UseProcessDataService> in the AtProcessDataREST.config file to True; the AtProcessDataREST.config file is located on the web server in the C:\inetpub\wwwroot\AspenTech\ProcessData directory;
Add 'Aspen Process Data Service' to ADSA and make sure port number 52007 is open in the... |
Problem Statement: When writing user-defined routine for Aspen Plus (user block, user kinetic...) it might be necessary to call numerical routines provided by third-parties as LIB files (for example, the IMSL libraries). These files should be linked with Aspen Plus before the Aspen Plus run is executed. | Solution: To link the LIB files, the asplink.prl file as described below. Any LIB file can be included. In the following example, we want to include IMSL.LIB, IMSLS_ERR.LIB and IMSLMPISTUB.LIB from the IMSL libraries.
In Aspen Plus 10 and earlier:
The asplink.prl file is located by default in
C:\Program Files (x86)\As... |
Problem Statement: How to configure a remote connection to PostgreSQL for Aspen Multi-Case? | Solution: There are three steps to configure a remote connection to PostgreSQL for Aspen Multi-Case:
Test and troubleshoot connection to remote machine
Configure PostgreSQL for remote connection
Create aspenuser in host DB machine
Please see attached PDF for details on how to perform each of these steps.
Key Words:
A... |
Problem Statement: How can we fix below error message that occur during Aspen PIMS model run. | Solution: The above error appears when the model is run in Aspen PIMS, as Aspen PIMS is 32-bit application 32-bit access driver might be missing and needs to be installed.
Here are the very simple steps to follow and install the 32-bit access driver to fix this error:
1. Type in ‘Microsoft access database engine” in go... |
Problem Statement: Which functional groups does Aspen Plus use to fit a molecule's structure during a Property Estimation (PCES) run? Can the Graphical Structure on the Components | Molecular Structure | Structure and Functional Group sheet be used to determine the functional groups used in estimation. | Solution: Aspen Plus attempts to fit your entered molecular structure information using the functional group methods available. The Functional groups are documented in the help under Aspen Plus
Keywords: None
References: -> Physical Property Data Reference Manual -> Group Contribution Method Functional Groups.
The gr... |
Problem Statement: If you are modeling a convection section without a firebox Fire Heater, EDR gives you the option to enter the total mass flow of the gas at inlet to the convection section, in the Problem Definition | Process Data | Flue gas.
NOTE: You will also need to specify the flue gas temperature at inlet. | Solution: To enable this input you need to set your exchanger as follows:
Go to Problem Definition | Application Options | Application Options, select YES for Exclude firebox from calculation, and for Flue gas properties select form the options Provide as input.
Move to Fuel + Oxidant | Fuel | Fuel, and for the Numbe... |
Problem Statement: How are the initial and final boiling points used in the assay curve calculations? The end points specified in the assay are different than what is reported for the stream.
The final boiling points (TBP, D86 and other curves) generated by Aspen Plus for the bottom product and the feed differ up to 70... | Solution: When distillation curves are calculated for assays, the Aspen Physical Property System extrapolates from the first and last points in the assay to get the values for the 0% and 100% points. Options on the Petro Characterization | Analysis Options | Assay Procedures sheet affect this extrapolation:
Extrapolati... |
Problem Statement: In view of the overlaying of products, the steps to upgrade Aspen Watch to a new version on a new computer can be confusing. The attached pdf file should provide a guide through the process.
Though it will try to give hints along the way, the user should also be able to determine which steps can be o... | Solution: NOTE: For this KB Article, please Download and Refer to the PDF File Attachment Named,
Aspen Watch Upgrade Procedures for a new Computer v3.pdf
Keywords: AspenWatch, Upgrade, Migration
References: None |
Problem Statement: After opening a file in a new version and updating the databanks, the parameters still seem to come from the old databank when looking at the forms.
For example, after upgrading to V12.1, the databank should be PURE39, as seen on the Components | Specifications | Enterprise Database sheet.
However,... | Solution: These parameters are not USER entered parameters, but are the results from retrieving parameters in a previous version. The forms need to be refreshed after upgrading to a new version. Click on Retrieve Parameters in the Tools section of the Home ribbon to see the source and values of the parameters in the ne... |
Problem Statement: How can I use Aspen SQLplus to look at Aspen Calc information, such as calculation names, comments, inputs and outputs? | Solution: Knowing that Calculations, Formulae & Schedules, etc. are not stored in the database but in files, it would seem that SQLplus would not be the right tool for the task but SQLplus does allow access to COM objects. The COM object support in SQLplus is like COM object support in VBScript. This permits SQLplus to... |
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