Assign Transfer Instances

You can assign the specific transfer instances necessary for recipe construction. Instance names must be unique. The editor verifies the name to ensure validity and uniqueness.

Use the names defined for the instances while you are building a recipe and are assigning phases to an operation.

Multiple transfer instances are not required unless more than one process instance has been defined for a process class or if multiple connections require simultaneous allocation from the same transfer class during batch processing.

Note: If you are creating multiple transfer instances from process classes that contain multiple process instances, it is possible for a transfer instance to be defined for which a connection does not exist in the process model. Therefore, you must be sure that the physical process model contains a connection that is represented by the defined transfer instances.

The default transfer instance name is the same as the name of the transfer class. The source and destination instances associated with the default transfer instance correspond to the first process instances defined for the source and destination process classes. If you have defined multiple process instances for a process class, you must define multiple transfer instances so that the recipe builder can differentiate the transfer phases into and out of each process instance.

If your recipe procedure requires multiple transfer instance names, you should first change the name of the default instance, and then add the required instances.

If multiple transfer instance names are required, change the name of the default instance first, then add any other required instances.

Note: If you delete a transfer class instance, you must manually delete the phases that were previously assigned. The recipe becomes invalid until the phases are removed.

To assign transfer instances

1. Open the Equipment Requirements Editor.

2. Click Transfer Instances.

   The Transfer Class Instance Editor dialog box appears. All available transfer classes along with their source and destination classes defined in the process model are listed.

   

3. Select a transfer class item from the list.

4. Click Source Instance.

   The Source Instances dialog box opens.

   

5. Select the source instance from the list and click OK.

6. Click Destination Instance.

   The Destination Instances dialog box appears.

   

7. Select the required destination instance from the list and click OK.

Example Transfer Instance Selection

The following dialog box shows how you can use two transfer instances for the bulk-to-reactor addition example shown earlier in this section. After definition, the instances are available within the recipe procedure, which allow the recipe builder to select the appropriate transfer phase depending on the process instance operation being defined.