question stringlengths 19 6.88k | answer stringlengths 38 33.3k |
|---|---|
Problem Statement: How do you simulate feedforward control of a stream feedrate? | Solution: Attached is an example of how to set a stream flowrate as a function of another stream flowrate.
See file setfeed.bkp.
A Calculator block is used to set the feedrate of stream HX2 to equal 75% of the stream HX1.
For more information see the Aspen Plus Help topic Simulation and Analysis Tools -> Sequential ... |
Problem Statement: Is there a list of the units available in Aspen Plus? | Solution: Yes, there is a list. The file RCUNITS.DAT under C:\Program Files (x86)\AspenTech\Aspen Plus xxxx\Engine\Xeq defines all units for the simulation engine. The same information is also stored in the graphical user interface configuration files. This file is not very readable and should never be modified by the ... |
Problem Statement: Why different Advanced Process Control Collect methods could have a different timestamp?
The collect processes for APC Collect methods: DMCplus Collect, Inferential Qualities Data Collection (DC) module, Aspen Watch Miscellaneous Tags and Aspen Process Controller (APC) Builder Data Collection are dif... | Solution: The timestamp difference should be less than 1 minute between the different Collect methods; if it’s a greater value check the following:
Determine where runs the Cim-IO Interface (e.g. Cim-IO for OPC) and the timestamp (including Daylight Saving settings, if applies) of that machine. If the data source is re... |
Problem Statement: How do you import legacy databank files into the Aspen Properties Enterprise Database (APED)? | Solution: You can create your database in two ways: Either import legacy databank files or clone an existing database. In either case, begin by opening the Database Manager from Start | Programs | AspenTech | Process Modeling <version> | Aspen Plus | Aspen Properties Database Manager. Right-click the Aspen Physical Pro... |
Problem Statement: AspenONE Process Explorer is a HTML-5 based powerful tool in AspenONE MES Suites. Users can make the most of its functionalities by referring to its Online Help. | Solution: If users have AspenONE Process Explorer installed already, just log onto its home page and find the aspenONE Help on toolbar.
The Help file contains the introduction of usage for all A1PE can do. Bing Translator under the search bar can help translate current page to specific language.
If you do not find th... |
Problem Statement: In my project I have one MODULE Area; why am I seeing foundation costs for an electrical substation? | Solution: Areas and their components will require electrical for electrical items (motors, lights, etc) and Process Control systems. If you only have one area in your project, these project costs will be reported against that one area. If you add an area at the bottom of the project, then the project costs (like elec... |
Problem Statement: My simulation is failing to converge. Is there a simple way to isolate blocks from each other to analyse the problem? | Solution: One option is to disconnect the streams. The drawbacks with this approach are:
you need to change the specifications of the port variables (make them fixed)
you may mess up arrays declared using multiports
you may not remember where the stream was connected when you want to restore the simulation
The sugges... |
Problem Statement: When searching for tags to add to a trend plot in aspenONE Process Explorer, the application frame may pop up with a dialogue box reading:
Unable to validate server response.
Search Service responded with the following error:
HTTP Code: 407
Description: Proxy Authentication Required | Solution: This indicates that the server uses a proxy when attempting to connect to a website and that the credentials being used to connect to the website are being rejected. This can happen for companies that use a proxy server to allow or reject internet access. This issue can be fixed by having aspenONE Process Exp... |
Problem Statement: Modeling Feedwater Heaters with Aspen Shell & Tube Exchanger | Solution: The following tutorial can be employed to design each zone of a feed-water heater using Aspen Shell & Tube Thermal Program. Once designs are completed, condenser design can be transferred to Aspen Shell & Tube Mechanical Program adjusting the tube length as required to account for the desuperheating and drain... |
Problem Statement: Attached is file D86.bkp. This example has a stream containing hydrocarbons, it passes through a mixer with a single exit stream. This flowsheet is repeated for mixer units of different property methods. Find the D86 curve under Results Summary | Streams | Vol.% Curves. The D86 curve is identical for... | Solution: The ASTM D86 curve is intended to be used in conjunction with Assays and Pseudocomponents. In the event where there are no Pseudocomponents, what is Aspen Plus in fact calculating?
When components are not defined as petroleum assays, the ASTM D86 curve is calculated using a method dependent only on the compos... |
Problem Statement: Over time, the rescheduling times in Aspen Cim-IO servers for asynchronous transfer records with the same frequency may slip to the point where all the transfer records are processed on the Aspen Cim-IO server at the same time. Also, performing a clean restart causes all the asynchronous transfer rec... | Solution: This query staggers the scheduling of asynchronous transfer records defined by IOLongTagGetDef with the same frequency evenly across the whole scanning period.
You can run this query after performing a clean restart to stagger scanning.
In order to combat rescheduling slippage in the Aspen Cim-IO server, you ... |
Problem Statement: What are the differences between the Copy Values, Rewind and Advanced Copy in the Snapshot management tool? | Solution: Copy Values copies fixed, free and initial variables to the simulation fixed, free and initial variables.
Rewind copies fixed, free and initial variables to the simulation, and it also rewind the procedure workspaces and delay information, as well as setting the time.
Advanced Copy is a variant of the Copy Va... |
Problem Statement: How to change the sampling time of existing tags for Aspen Infoplus.21? | Solution: This article discussed the method to move the tags which users want to adjust sampling time to a new transfer record.
Turn off the existing transfer record (this is optional but we would recommend do so to avoid potential issue) and select Duplicate this record
Enter a valid name for the new transfer reco... |
Problem Statement: What is In-line Pass Partition Area in the Exchanger and why is it important. | Solution: Pass partition lanes are gaps between tubes where there is a pass partition. The pass partition is where the plate which divides the inlet channel into for instance two passes is located. This has to seal with the tubesheet reasonably well so there is a gap between the rows of tubes where this touches the tub... |
Problem Statement: What is the best way to model the CO2 Capture Process by amines and physical solvents in Aspen Plus? | Solution: In 2006.5, new Amines property packages for MEA and MDEA with H2S and CO2 were developed and delivered as application examples. With each release, these models are improved, updated, and extended to other amines (AMP, DEA, DGA, DIPA, K2CO3, NaOH, NH3, PZ, TEA, Sulfolane), amine mixtures (DEA-MDEA, MEA-MDEA, P... |
Problem Statement: Can I display Design-Spec, Transfer, and Calculator blocks connected to unit operations on PFD? | Solution: Starting in Aspen Plus V7, Design Spec, Calculator, and Transfer blocks can be placed on the flowsheet.
Dashed connection lines indicating the unit operation models affected by these blocks can also be added.
These options are accessed using the Display Options drop down on the Modify ribbon.
or by going to... |
Problem Statement: When modifying in the Feed Fuel block Carbon index, and specification is higher than some specific value (for example 1), the user may see infeasibility error in the message panel, which will look similar to the one as shown below:
Variable EQ_0025_S5.Inlet.CO2 (value 1.018868e+000) is outside uppe... | Solution: of group 261 is infeasible.
EQ_0025_S5.Inlet.CO2 is equivalenced to the following variables:
BOILER.AirOut(Fluegases).CO2
BOILER.CO2fluegas
S5.Inlet.CO2
S5.Outlet.CO2
Why Aspen Utilities Planner is showing infeasibility error when only changing Carbon Index specified in Fuel Feed block?Soluti... |
Problem Statement: When the date and time on a Distributed Control System (DCS) or Programmable Logic Controller (PLC) scanned by Aspen CIM-IO gets set to the future, or if the Aspen InfoPlus.21 server time is accidentally set ahead, the Aspen InfoPlus.21 archiver will write data with future time stamps to history. Aft... | Solution: There are three different ways to recover from this situation.
Method 1:
Ensure that the DCS/PLC/Windows system time is correct then wait until the Aspen InfoPlus.21 database time naturally catches up to the time stamp of the future data written to history. Data collection will then resume as normal. This met... |
Problem Statement: Why different Advanced Process Control Collect methods could have a different timestamp?
The collect processes for APC Collect methods: DMCplus Collect, Inferential Qualities Data Collection (DC) module, Aspen Watch Miscellaneous Tags and Aspen Process Controller (APC) Builder Data Collection are dif... | Solution: The timestamp difference should be less than 1 minute between the different Collect methods; if it’s a greater value check the following:
Determine where runs the Cim-IO Interface (e.g. Cim-IO for OPC) and the timestamp (including Daylight Saving settings, if applies) of that machine. If the data source is re... |
Problem Statement: How do you import legacy databank files into the Aspen Properties Enterprise Database (APED)? | Solution: You can create your database in two ways: Either import legacy databank files or clone an existing database. In either case, begin by opening the Database Manager from Start | Programs | AspenTech | Process Modeling <version> | Aspen Plus | Aspen Properties Database Manager. Right-click the Aspen Physical Pro... |
Problem Statement: This Knowledge Base article provides steps to resolve the following error:
Request Failed: 500
which may be encountered when testing Aspen Data Source Architecture (ADSA) Web Service Protocol. | Solution: To resolve the error message Request Failed: 500, there can be multipleSolutions based on root cause of the problem.
1. DCOM related errorSolution - Please click Start | Run, type Dcomcnfg and do the following:
- Click on the COM Security tab
- Both in Access Permissions and Launch Permissions in the Edi... |
Problem Statement: How can I change the default location setting in Activated Economics? | Solution: You change the location setting in Activated Economics by changing the template being used to another template using a different location. Templates can be change in Activated Economics by going to the Economics tab on the Ribbon, and choosing “Cost Options”. The “Costing Options” sheet will open up, and th... |
Problem Statement: How is the pressure drop across a swage fitting in a pipe segment calculated in Aspen HYSYS? | Solution: In Aspen HYSYS, the pressure drop computed for swage fittings in pipe segments is calculated with the equations shown in the Pipe Segment | Rating Tab | Swage Fittings section of the Help Menu.
First, with the mass flowrate flowing through the pipe (mass in = mass out) and the mass densities at the inlet a... |
Problem Statement: How to convert a Hetran file to an EDR file in V8.8 and later versions? | Solution: The Hetran file is saved as .btj file, this extension cannot be read in Aspen Shell and Tube Exchanger V8.8 and later versions.
Aspen Shell and Tube Exchanger V8.4 can read .btj files. The .btj file needs to be opened in V8.4 and saved it as .edr file.
Please follow these steps:
1. Open .bjt file using ... |
Problem Statement: How to ramp a variable without creating a task? | Solution: It is a very useful feature when you are experimenting with your dynamic simulation. This feature can only be used for variables with Fixed specification.
You can implement the steps below while the simulation is running or you can pause the simulation first and then resume the run once finished. If you choo... |
Problem Statement: How to handle changes of model time units? | Solution: It is possible to define the model time units in the Run, Run Options menu. You can select the units of TIME, the simulation time. This specifies not only the units of the predefined quantity TIME, the current simulation time, but also the time and delays used in DELAY function, in tasks, and the time derivat... |
Problem Statement: Security, whether Aspen Local Security, or full Framework Security, is based on applications and roles and users attached to roles. The administrator sets up roles such as Admin, Manager, User, etc, and then adds users to these roles. These users are defined by their NT Login ID. You then define whic... | Solution: You would get the higher permissions. The client software would ask the security system if person who logged with <login domain>\<user name> is able to perform a certain task. The system will return a yes if he or she is a member of a role that has that permission.
Therefore having a user in more than one rol... |
Problem Statement: This knowledge base describes how to fix Error 1320: The specified path is too long C:ProgramData\Document\AspenTech during Economic Evaluation installation. | Solution: To resolve this issue, please follow these simple steps:
1. Unhide all the hidden folders at Program File (x86) to see the ProgramData folder:
Open a Window Explorer | Click on C: drive | Click on the Organize from the menu tool bar | Select Folder and Search Options | Click on the View Tab | Uncheck Show... |
Problem Statement: How is the conduit length of a component calculated in Aspen Capital Cost Estimator (ACCE)? | Solution: For a component such as tower, conduit length is the sum of :
1. Tangent to Tangent (T-T) height of the component
2. The skirt height
3. The average distance of the component to the panel board ( area level spec)
For example, if you have a tower that has an 80 feet T-T height, a skirt height o... |
Problem Statement: In my project I have one MODULE Area; why am I seeing foundation costs for an electrical substation? | Solution: Areas and their components will require electrical for electrical items (motors, lights, etc) and Process Control systems. If you only have one area in your project, these project costs will be reported against that one area. If you add an area at the bottom of the project, then the project costs (like elec... |
Problem Statement: Excel Integration Utility is opening additional Excel Instances and it does not function properly | Solution: This TecH Tip provides a possibleSolution when you are observing that Excel Integration Utility is opening additional Excel Instances and it does not functions properly.
If you are observing that Excel Integration Utility is opening additional Excel Instances and it does not function properly, go to Task Man... |
Problem Statement: When I run the model using the XLP Matrix Generator, it failed, generating the error message:
Error in CreateMPIProcess: CreateMPIProcess failed with error 2: The system cannot find the file specified.
How can I resolve this error? | Solution: The cause of the error is that Windows Firewall is blocking some network connections.
To resolve the problem, you need to change Firewall settings. Go to Control Panel, Windows Firewall, Exceptions tab, Add Program and add the following executables.
1. C:\Program Files\AspenTech\Aspen PIMS\CaseParall... |
Problem Statement: What is Feasibility Objective Factor in the XSLP settings? | Solution: Feasibility Objective Factor identifies the user scaling for feasibility. The best way to describe this number is that this is the cost of a unit of infeasibility. For example, if a non-linear equation is an E-Row, the Infeasibility Breaker option allows you to buy a unit of non-zero, So, if the Feasibility... |
Problem Statement: The customer wishes to know how many Manipulated Variables (MVs) will be in the controller model. | Solution: This is relatively simple. When planning the Aspen Advanced Process Control Application two key source documents are the Process Flow Diagram and the Piping and Instrument Diagram of the process to be controlled.
To estimate the MV count for the controller, first determine the extent of the controller on th... |
Problem Statement: What causes Error 1067:the process terminated unexpectedly, while starting CIMIO Manager service? | Solution: While starting CIMIO manager service, it fails to start with error message - Error 1067:the process terminated unexpectedly.
There could be multiple reasons for this error to occur. One of the reasons is machine hosting CIMIO manager is not able to connect to or acquire license from License server.
Please fol... |
Problem Statement: When I add a Quoted Equipment item to my project, why is it only appearing in the TIC (Total Installed Cost), but the equipment cost shows zero? | Solution: Equipment costs are broken down in two basics categories; the cost of the equipment itself and the Total Installed Cost (which includes things like setting costs, civil, piping, instrumentation, etc). When you use the Quoted Equipment component, it needs three things: COA, “Material cost per unit”, and “Lab... |
Problem Statement: I noticed in Aspen Capital Cost Estimator (ACCE), Help, the option to Show Cost Basis for my current release. Where can I find the cost indices for all the past releases? | Solution: The list of all indices is in the Icarus
Keywords: Indices, cost basis
References: Manual, Chapter 33, titled, Base Indices. You can get the manual from ACCE under “Help”, “Documentation”. |
Problem Statement: After applying Windows updates from July-August 2018 release users may experience Error 429: ActiveX components can´t create Object. The Aspen ACP Web Provider Data Service may not be running or is not registered properly. This Error will not allow the user to login in PCWS.
On the other hand, the us... | Solution: These errors were introduced due to a Microsoft .NET framework security update that affects the PCWS. The following MS article explains theSolution
https://support.microsoft.com/en-us/help/4345913
The recommended approach is to allow Windows Update to detect and apply the August 2018 “2018-8 Security and Qua... |
Problem Statement: What does this error message Unhandled Exception Length cannot be less than zero mean when users are trying to print results in Aspen Exchanger Design & Rating tool? | Solution: When user tries to print some data from EDR file, it checks that the formatting of the Headings area is maintained like below:
Specifically, it uses the following strings to parse out the data the user may have entered in between:
Our
Keywords: Exception Length; Headings and drawings;
References: Your Referen... |
Problem Statement: Why is the system generating concrete costs when I have a MODULE Bargeable or Truckable area? How do I remove the concrete costs? | Solution: The system is generating the concrete costs because the default is to have the system set the Module on a pad at the delivery site. You can set the concrete thickness to 0 (zero) on the Module form and no concrete costs will be generated.
Keywords: Module, concrete, pad, Bargeable, Truckable
References: None |
Problem Statement: What affect does entering the duty have on my thermosiphon reboiler? | Solution: Entering the duty will not affect the reboiler equipment cost, but it will have an affect on the installation bulks such as piping and instrumentation.
The actual thermosiphon reboiler cost is determined by the heat transfer area and other inputs. The duty, and stream properties such as vaporization, specif... |
Problem Statement: Why is my Rental Equipment Report empty? | Solution: Check to make sure you have not entered either Rental as a percentage of DFL or an actual amount. You can have the system calculate the rental equipment types, durations, and cost, OR you can enter the rental equipment as a percentage of DFL or amount. If you enter a percentage or an amount, the system wi... |
Problem Statement: Is there a report that shows whether a piece of euqipment's pricing is system generated or a Quoted Price? | Solution: Yes. There is an Excel report under Other Reports | Project | List of Equipment - Source of Quote
Keywords: Quoted Equipment, Quoted, System Generated, Report
References: None |
Problem Statement: How to add Ductile Iron pipe in Aspen Capital Cost Estimator. | Solution: Ductile iron (DI) pipe is commonly used for water and wastewater applications. This model is available in Aspen Capital Cost Estimator V8.8.2 and onwards.
The new plant bulk model “BPIPDI PIPE� is added to the list of available piping plant bulks in all three Economic Evaluation products. The model is cat... |
Problem Statement: I would like to have my Scaffolding reported as a Direct Cost instead of an Indirect Cost; how can I do that? | Solution: You can not use the COA Manager to move an Indirect COA to a Direct COA. But for Scaffolding, it can be done using the Customer External Files | Indirects - Proratables. Here is how it is done:
1.) There is a Direct COA for Scaffolding under Civil. It is COA 405 but nothing is put there by the system. Yo... |
Problem Statement: How to add seamless steel tubes in Heat Transfer Equipment. | Solution: Starting in V8.8.2, Heat Exchanger tubes now feature a Seamless option with a symbol for the 2205 (duplex) seamless tube of 2205S. This tube material is available for all shell and tube heat exchanger models, reboilers, air coolers, furnaces and heating units. For ASME design code, the max. design temperature... |
Problem Statement: How do I remove module setting costs? | Solution: The setting COA 285 is for module setting. You can index an adjustment of 0 (zero) on that COA at the module area level to get specific module setting costs removed, or on the whole project to get all module setting costs removed.
Keywords: COA 285, module, setting
References: None |
Problem Statement: How to create a shared On-Demand calculation in Aspen Calc using Aspen SQLplus. | Solution: You can take advantage of the Aspen On-Demand Calculations.
Calculations can be executed at regularly scheduled time intervals, on user request, and for events such as AspenTech's InfoPlus.21 database changes. One feature of AspenTech's Aspen Calc involving user requests is On-Demand Calculations. This is a ... |
Problem Statement: How to use the BackDoorVariable method to get access to variables in Aspen HYSYS. | Solution: Some variables used in Aspen HYSYS have not been fully unwrapped and are not directly accessible as an automation interface. However, backdoor methods can be used to get access to them. We could think of monikers as URLs that we can input directly in the address bar of a web browser and give us access to cert... |
Problem Statement: What units of measure are used in Aspen Plus for Henry Constant? Also, how is it possible to use data from Environmental Chemistry literature to obtain the Henry constant? | Solution: There are various forms Henry's Law as you can see in Table I
Table I
equation:
dimension:
[dimensionless]
Aspen Plus use the form kH,px (Pressure unit).
There are multiple equations assessing the effect of temperature on the constant. A simple way to describe Henry's law as a function of temperatur... |
Problem Statement: In Aspen Mtell, For Tuning an Agent, what does the post Failure Interval time hold significance for? | Solution: The post-failure interval is an excluded portion of the data set. The machine learning algorithms usually don't consider the post interval failure time as a part of normal or abnormal behavior. Hence It is entirely excluded.
The reason this exclusion exists is because once a failure occurs, it typically takes... |
Problem Statement: I have a simple estimate where I am adding some equipment and piping, how can I turn off the Volumetric Modeling in Aspen Capital Cost Estimator (ACCE) to just get the added items cost? | Solution: You can turn the Volumetric Model Option off in ACCE by using either the M or N option in the General Project Data | Suppress default equipment/area/project bulks” form. M will suppress the equipment volumetric model bulks and most of the system developed area and project bulks, and N suppresses the equipmen... |
Problem Statement: Why am I not seeing Rental Costs in my Reports? | Solution: You are not seeing any Rental Costs because for your Workforces you have chosen, under Indirects:
“- Wage rates include all indirects”
One of the indirects included is the Rental Cost. So your Rental Costs are included in the wage rate.
Keywords: Rental Costs, Rental, Indirects, Workforce
References: None |
Problem Statement: When you open the Aspen InfoPlus.21 Configuration Wizard Excel addin and select the datasource, the fields are greyed out and not changeable. Shown below (fig 1):
Figure 1 | Solution: To resolve this issue go to a cell (A) and enter tag name or any character and then reselect the the Datasource in the Configuration Wizard. This will force the add-in to connect to the datasource and open the fields. Shown below (fig 2)
Please note: The addin cannot work unless there is data present withi... |
Problem Statement: Is it possible to get the K values calculated for each section of a Pipe model? | Solution: Pipe assumes that the pressure drop due to valves and fittings is distributed evenly along the specified length of the pipe. The total length Pipe uses in calculations corresponds to the specified pipe length, plus any equivalent pipe length due to valves, fittings, pipe entrance and exit, a sudden enlargemen... |
Problem Statement: Why might I see differences between a regular case stack and a parametric analysis changing the same variables? | Solution: Sometimes users try to replicate results of a Parametric Analysis by running a set of comparable cases and find there are small differences in the results. By design, Parametric Analysis runs are initialized differently than a regular case stack in order to speed up theSolution time. The different approach ... |
Problem Statement: What is the Planning Objective Function Formulation? | Solution: Use the Planning objective function formulation to consider the following factors during optimization:
· Product Shipment Revenue
· Component Shipment Revenue
· Product Receipt Cost
· Component Purchase Cost
· Inventory Buildup Value (excluding final blend debits if applicable)
· ... |
Problem Statement: How do I zero out Field Supervision” (COA 85) in my project? | Solution: You can zero out “Field Supervision” costs by going to the Engineering form, Engineering by Discipline. Choose F (Field Office Supervision), All Disciplines, and 0 (zero) and that will delete COA 85.
Keywords: Field Supervision, COA 85, COA, Engineering
References: None |
Problem Statement: Error database was created with non-FIPS validated cryptographic algorithms and is not accessible when FIPS compliant is enabled.
When trying to use Aspen Properties Custom database, user gets following error message:
SQLServer.com,1433.Custom_DB : (DataVersion - 23.0.0.0) OK
SQLServer.com,1433.Cus... | Solution: User will get this error message when the databases were created with non-FIPS compliant and later FIPS 140-2 Compliant was enabled on users machine. All new databases created with Aspen Properties Enterprise Database in version V8.8 or later are FIPS 140-2 compliant.
Databases created with V8.6 or earlier ar... |
Problem Statement: Several users have had difficulty setting up volume based purchases and sales in a global (M/XPIMS) model. The goal of this | Solution: document is to make it easier to set-up the model and to provide a couple of tips to avoid common problems.
This particularSolution document applies to MPIMS models in which the Global and all Local Models are WEIGHT based.Solution
Volume Based Purchases
There are a couple of key things to remember when setti... |
Problem Statement: What will prompt XLP to regenerate the matrix for a case? | Solution: Items that cause regeneration in XLP:
· GENERATE keyword
· EXPERT keyword
· MODEL keyword
· Current case modifies a case that uses the EXPERT keyword AND current case has changes
· Using keyword REPLACE or REPLACEALL instead of TABLE
· Adding an entire table
·... |
Problem Statement: How do I resolve the issue of “Unexpected file size increase” in Aspen Plus Version V10. | Solution: Most of the time the file size get increases while we save any file in Aspen Plus V10, which is difficult to re-open & might get crashed.
To resolve this issue, check below possibleSolutions:
1. Check whether the recent patch for: Aspen Plus V10.0 Family- Cumulative Patch 3 (CP3) is installed or not. This i... |
Problem Statement: モデルツリー上の全てのマトリックスファイルの違いは何ですか？ | Solution: MPSBCD - このファイルにはDistributive Recursion (DR)のモデルの計算結果が含まれます
MPSPROB - このファイルにはDistributive Recursion (DR)のモデルの初期値が含まれます。計算結果は含まれません。
Xmps001.xlp - このファイルにはXNLP やXNLP と XLPを使ったモデルで特定のケースの計算結果が含まれます
Xlp_new001.xlp 及び xmps_new001.xmps - このファイルはXNLP と XLPを使ったモデル用で同じファイルで二つの異なる形式があります。これらは生成された初期値で収束解の値とは一致しま... |
Problem Statement: AspenTech recommends setting the affinity of Aspen InfoPlus.21 processes to the same CPU regardless of whether Aspen InfoPlus.21 is hosted on a virtual or physical server. One reason is the length of time required to acquire a lock against the Aspen InfoPlus.21 database when accessing data. Some Mi... | Solution: Download the zip file attached to this article to a computer with multiple CPUs. The zip file contains a program named LockTest.exe that measures how long it takes to lock a resource 1,000,000 times using the same locking mechanism as the Aspen InfoPlus.21 API.
Also included in the zip file are several batch ... |
Problem Statement: EO | Solution: fails after giving a Measurement block variable a description
Solution
After adding a Description, users need to update the EO variable names where they are referenced.
To set up a measurement, you add a Measurement block to the flowsheet and configure the block. Measurement processing automatically creates... |
Problem Statement: When a Windows Installer (MSI) package is installed from removable media, such as a CD-ROM or DVD, and the MSI file doesn't reside on the root folder of the media, the following error message may appear:
Error 1706, No valid source could be found?
This occurs if the Installer needs to query the sourc... | Solution: Option 1: Copy the source media to a local or mapped drive and re-run the update.
Option 2: See https://docs.microsoft.com/en-us/windows/desktop/msi/mediapackagepath for information on modifying the registry to properly set the MEDIAPACKAGEPATH property. MEDIAPACKAGEPATH is a public property that enables yo... |
Problem Statement: How to specify when PPM, PPB or trace will be used for component fractions in stream results? What does trace mean for component flowrates or fractions? | Solution: It is possible to specify that PPM, PPB or trace to be used for values in the new Stream Results form available in V9 and higher.
PPM is used when a fraction is in the range of 10-3~10-6, PPB is used for the range of 10-6~10-9, and trace is used for the fractions less than 10-9. Fractions in the Stream Summ... |
Problem Statement: When we design Top Mounted condenser with one Vapour inlet from bottom with single liquid & vapour outlet respectively shows below error in V9, V10 & V11: | Solution: If you specify a normal condenser, program will issue a warning stating that inlet nozzle needs to be on the top. If inlet nozzle needs to be at the bottom, you can model it as knockback reflux condenser. See screenshot below.
Key Words:
Top Mounted Condenser; Knockback Reflux condenser
Keywords: None
Re... |
Problem Statement: There are two methods for trending a calculated tag, the Ad-Hoc method and the Stored Calculations method.
This Tech Tip addresses the Stored Calculations method which is used in conjunction with the AspenCalc client. | Solution: The Aspen Calc client must be installed onto the Process Explorer client node in order to use the Stored Calculations method.
Create an ADSA data source for the Aspen Calc connection. The only ADSA Service component that should be added to this data source is the Aspen Process Data (Calc) component. This ADSA... |
Problem Statement: The Aspen SQLplus task 'TSK_SQL_SERVER' will not start and exits without error. | Solution: This is usually caused by another program utilizing the default Aspen SQLplus port '10014'.
Check if the port is being utilized by another program by executing the command 'netstat -a'. Look for lines similar to the following;
TCP
<yourhost>:10014
0.0.0.0:0
LISTENING
Or
TCP
<yourhost>:sqlplus
0.0.0.0:0... |
Problem Statement: How do you create a Custom type reaction available starting in V10? | Solution: Attached is an example of how to create a custom reaction where the custom term is simply a power-law rate expression for comparison. Block RCSTR uses Reaction POWERLAW uses a forward and reverse power-law reaction. The Reaction GENERAL has the reaction specified as a reversible POWERLAW reaction class. Block... |
Problem Statement: Vapor Pressure for component C4H11NO-1 is incorrect when using Electrolytes. | Solution: The incorrect Vapor Pressure comes from the Antoine Vapor Pressure (PLXANT) parameters for C4H11NO-1 (C4H11NO, 2-AMINO-2-METHYL-1-PROPANOL) that are in the system definition files (SDF) for electrolytes. Note that even if ElecNRTL is selected and not used, the parameters in the SDF are retrieved and used. The... |
Problem Statement: This knowledge base article describes the various places where debug logging can be enabled for Aspen Production Record Manager. | Solution: There are three places where various types of debug logging can be enabled for Aspen Production Record Manager.
Through the Aspen Production Record Manager Administrator:
1. Open Aspen Production Record Manager Administrator
2. Expand your data source
3. Under the Server Administration section right click on ... |
Problem Statement: The data regression feature of Aspen Plus allows you to fit time-profile data in RBATCH or axial-profile data in RPLUG. Several data types are supported. Component attribute profiles are not one of the data types supported by the profile-data feature. | Solution: document 111707 Click this link to go to the download page:
http://support.aspentech.com/webteamcgi/SolutionDisplay_view.cgi?key=111707
Keywords: RPLUG
RBATCH
data regression
data fit*
Component attribute
comp-attr
user prop-set property
property profile*
attribute profile*
CAT
UPP
References: None |
Problem Statement: Is there a way to change unit sets without the steam and block inputs changing as well? I would like only the calculated results to change units. | Solution: When you change the Global unit of measure, all of the input units of measure change and values are converted. If you then go to a form and manually change a value and unit of measure, it will stay with that specified unit of measure unit there is a global change.
For output units, It is possible to specify t... |
Problem Statement: Error HTTP Error 403.14 - Forbidden The Web server is configured to not list the contents of this directory. when Launching Aspen Mtell System Manager
Detailed Error Information when browsing http://localhost:80/AspenTech/AspenMtell/InteropServer/MIMOSA/:
Module DirectoryListingModule
Noti... | Solution: This article outlines the instruction to address IIS Error HTTP Error 403.14 - Forbidden The Web server is configured to not list the contents of this directory. when Launching Aspen Mtell System Manager.
Enable Directory Browsing on IIS:
1. Click Start and type inetmgr to launch Internet Information Servic... |
Problem Statement: Properties for streams in an Aspen PIMS model are important data pieces in driving the optimization. There are multiple sources for properties in Aspen PIMS and multiple ways to handle properties.
Here is a summary of how properties are defined, what tables are used for that purpose and the order of ... | Solution: There are two main types of properties: static and calculated. The tables involved in property calculations of both types are summarized below:
Static Properties Tables
Calculated Properties Tables
BLNPROP
ASSAYS
BUY
UNITS
PGUESS
PCALC
INDEX and Property Calculation Formula facility
ABML (Aspen Blending Mod... |
Problem Statement: How do I model “sour water stripping with pump around system” in Aspen Plus without mass balance error? | Solution: To reduce convergence issue due presence of ions in the system, user may consider apparent component approach instead of true component approach (with this, the material balance will be done based on components & not on Ions) this will help in resolving the issues with material balances for ions in complex sy... |
Problem Statement: How to stop Aspen Plus from showing message You are opening a file from network drive, would you like to open a copy locally? when trying to launch a model from network location. | Solution: Users who do not want to see above message can click on Don't show this message again check box to stop seeing this message again when opening a model from network location.
To roll out this setting on all the users machine, please run below registry on all the users machine.
Windows Registry Editor Versio... |
Problem Statement: When trying to duplicate an existing record (or creating a new record based on a definition record), the ensuing dialog box has the Name field grayed out and an ID of zero. | Solution: The problem is most likely because there are no Undefined records available. To check this, right-click on the data source name in the Aspen InfoPlus.21 Administrator and select Properties. Then select the Record Utilization tab of the server Properties dialog. If the number of Undefined records is zero, incr... |
Problem Statement: Sometimes it may be necessary to view Aspen InfoPlus.21 history data that is older than the earliest on-line file set (and therefore not visible to tools like Process Explorer). For example, there may be 6 file sets available each holding 1 month of data and there is a need to view data from 8 months... | Solution: If there is a need to make historical data which is not currently online available to be viewed, it will be necessary to mark at least one file set as 'Reserved (and NOT 'Mounted'). This could be done to an existing file set or a new one could be created with those settings. Making it 'Reserved' and NOT 'Moun... |
Problem Statement: When running Aspen Production Record Manager (APRM) Excel COM Add-in on a client machine, users may sometimes receive the following error message:
Application Error in dlgSelectDataSource FillAreaList
This knowledge base article shows how to resolve this error. | Solution: Aspen Production Record Manager Excel COM Add-in relies on DCOM to be able to fetch data from the APRM server. The users running the Add-in on their client machines must be properly authenticated within DCOM. The authentication is achieved by adding Authenticated Users group to the Distributed COM Users group... |
Problem Statement: This Knowledge Base article provides steps to resolve the following error:
Connect Error: 0x800706BF
which may be encountered while using the Atpm Client Test Tool. | Solution: The above-mentioned error message may be related to DCOM permissions on the computer reporting the error.
In all recent releases of MS Windows operating systems Microsoft made a number of changes to enhance DCOM security:
1) The Windows firewall
2) Limits that can be configured to prevent a COM application fr... |
Problem Statement: How do the different License States impact the functionality of Aspen Production Record Manager V8 and higher? | Solution: This knowledge base article describes the various License States for Aspen Production Record Manager and the impact in functionality for each state.
License Granted: occurs when a license has been granted successfully. In License Granted state:
· Aspen Production Record Manager provides complete funct... |
Problem Statement: In some situations, it is may be desirable to determine the oldest allowable timestamps for InfoPlus.21 tags. | Solution: Aspen SQLplus can access the xoldestok utility to return the desired information. For more information on xoldestok consult knowledge base item 103040 using the link below.
http://support.aspentech.com/webteamasp/KB.asp?ID=103040
The following SQLplus query can be used to return the timestamp value used by xo... |
Problem Statement: Can Aspen Plus handle azeotropes of more than 3 components? | Solution: Yes, Aspen Plus can handle azeotropes of more than 3 components using Aspen Distillation Synthesis. A quick search on the internet uncovered the acetone-chloroform-methanol-ethanol-benzene system which has a number of azeotropes including one quaternary azeotrope. This will be used as an example. The file is ... |
Problem Statement: The Test API (sometimes called the T-A-P-I utility) is a valuable tool to assist in troubleshooting CIM-IO problems. This document explains the proper procedure for running the utility. | Solution: The utility can be found by typing Test API in Windows Search box.
If you have difficulty locating the utility, simply search for the cimio_t_api.exe file, and run it.
If you suspect a problem with CIM-IO (eg. data-loss, no new data coming in, etc.) first check if data is coming into the DCS or PLC. If no new... |
Problem Statement: This knowledge base article describes how to perform basic checks to ensure that Aspen InfoPlus.21 has been installed successfully. | Solution: Checklist to verify the successful installation of Aspen InfoPlus.21
1. Aspen MES Family installation should complete with no error messages.
2. Start Aspen InfoPlus.21 database from start menu. Verify that the InfoPlus.21 Started Successfully message appears as the bottom of the Aspen InfoPlus.21 Manage... |
Problem Statement: This Knowledge Base article explains new features available in Aspen Data Source Architecture (ADSA) V9.0. | Solution: This following dialog allows the user to configure the way ADSA information is accessed on a client computer.
The first tab, ADSA, contains the following User and System settings:
· Use Public Data Sources checkbox: When checked, Public Data Sources will be used. When unchecked, User Data Sources... |
Problem Statement: Is it possible to adjust some parameter to achieve a desired heat of reaction? | Solution: Attached is an example for adjusting the standard enthalpy of formation of a component to achieve a desired heat of reaction. It is possible to set the heat of reaction in an RStoic block (seeSolution 3025), but adjusting the heat of formation keeps all of the enthalpy values consistent since the heat of form... |
Problem Statement: How to upgrade an existing Aspen Petroleum Scheduler /Aspen Refinery Multi-Blend Optimizer/Olefins Scheduler Database (Access, SQL or Oracle) | Solution: Use this procedure to migrate an existing Aspen Petroleum Scheduler(APS) /Aspen Refinery Multi-Blend Optimizer(MBO)/Olefins Scheduler Database:
1. Before updating your existing model it is advised to make a backup of the current model.
2. Run DBUpdate.exe. This program is located in the fo... |
Problem Statement: How to verify Aspen InfoPlus.21 Desktop applications were installed successfully? | Solution: Checklist to verify the successful installation of Aspen InfoPlus.21 Desktop Application.
1. Validate Aspen Process Explorer
Launch Aspen Process Explorer.
Click on Trend button and trend for any historian tag.
Verify to make sure trend is visible and new values are plotted.
2. Validate Aspen Process Data E... |
Problem Statement: How can I efficiently edit numerous non-linear equations? | Solution: In Aspen PIMS-AO V11, users can now import and export their PIMS-AO non-linear equations from/to Excel. This allows for easy editing as Excel functions like “Find and Replace” can be used to quickly modify many equations.
To export existing nonlinear equations into Excel, Right click on Non-Linear Equations... |
Problem Statement: In PIMS-AO when a single case is run, the iteration details are shown in the execution log. However when multiple cases are run on multiple processors, I do not see these details. I just see the final objective function for each case. Where can I see the detailed iteration information for cases ru... | Solution: PIMS-AO creates files called XSLP_Control1.log, XSLP_Control2.log, etc. There is a file for each processor that ran cases. Inside those files are the iteration details for the cases run on that processor. These files are created in the model directory.
Keywords: None
References: None |
Problem Statement: How do I turn on the Swing Cut Gradients option and what does it do? | Solution: PIMS-AO has an option called Swing Cut Gradients that alters how PIMS handles crude unit swing cuts. Traditional structure allows PIMS to optimize how much of a swing cut goes up or down. The entire swing cut has one set of properties and those constant properties are used to adjust the stream above and bel... |
Problem Statement: In Aspen Plus, it is possible to select units such as Mcum/hr and Mcuft/hr. However, the M for the first one stands for Million, while for the second it stands for kilo, because million would be MM. How do you know whether M stands for million or thousand? | Solution: M is Used as a prefix meaning thousand with English units, such as Mlb (thousand pounds) and Mscf (thousand standard cubic feet). With metric/SI units, m and M prefixes have their standard metric/SI meanings.
For more information see the help topic Aspen Plus Units Abbreviations.
Prefixes and suffixes
Symb... |
Problem Statement: When specifying the Particle Size Distribution (PSD) for a solid component in an inlet stream, the Conventional Inert CI Solid tab still appears as incomplete and shows the error:
SUBS-ATTR not complete: SATTSUB = CIPSD
Upper limit of last interval of selected PSD mesh cannot be greater than upper ... | Solution: In some simulations, you might want to have two or more particle size distribution definitions, with different size ranges. This is useful if different sections in your flowsheet have very different particle sizes. You can add and modify particle size distributions using the Setup | Solids | PSD sheet, or dir... |
Problem Statement: How to calculate a Utility Balance that changes with the Total Feed Rate? | Solution: If working with PIMS -DR, there is an example in our Volume Sample PIMS model where the user has to calculate the consumption of Energy UBALKWH (Power, KWH) according to the total Feed rate in the Cat Cracking Unit (SCCUTOT), because this utility consumption changes with the amount of total feed to the unit. ... |
Problem Statement: How to verify Aspen InfoPlus.21 Desktop applications were installed successfully? | Solution: Checklist to verify the successful installation of Aspen InfoPlus.21 Desktop Application.
1. Validate Aspen Process Explorer
Launch Aspen Process Explorer.
Click on Trend button and trend for any historian tag.
Verify to make sure trend is visible and new values are plotted.
2. Validate Aspen Process Data E... |
Problem Statement: Electrolytes can be modeled with either the True or Apparent approach. How do I choose which to use? Where do I input my choice? | Solution: In terms of computed results (Temperatures, duties, phase equilibria, etc.), the two approaches give equivalent results. Both true and apparent compositions can be reported for streams and blocks regardless of the approach. Still, There are a number of reasons for selecting one approach over the other.
1. ... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.