# Conveyors

Operation:

- Think of a Conveyor as a moving sidewalk or a conveyor belt.

- Material gets on the Conveyor, rides for a period of time, and then gets off.

- The transit time for a Conveyor can be either constant or variable.

- Operation of the Conveyor can be arrested.

- Multiple inflows to a Conveyor are allowed - Uniflows only.

- Both Capacity and Inflow Limit can constrain entry to a Conveyor.

- Leakage of Conveyor contents is possible.

Modeling Dialog Operations: The Conveyor's Modeling Dialog takes one of three forms, depending on the nature of the inflow(s) to the Conveyor:

1. If inflows to the Conveyor come from Reservoirs and/or clouds, the dialog will look like Figure 4-27.

2. If one or more inflows to the Conveyor come from Queues, and there are no inflows from Conveyors or Ovens, the dialog will look like Figure 4-28.

3. If one or more inflows to the Conveyor come from a Conveyor or an Oven, or if the Conveyor is the first stock in an assigned Sub-model stock/flow structure, the dialog looks like the one shown in Figure 4-29.

Figure 4-27 Conveyor Dialog - Inflows from Clouds and/or Reservoirs

Figure 4-28 Conveyor Dialog - Inflows from Queues, No Inflows from Conveyors and/or Ovens

Figure 4-29 Conveyor Dialog - Inflows from Conveyor and/or Oven

Special Note on Inflow Prioritization:

Whenever the Inflow limit or the Capacity constraint comes into play, the multiple inflows to the Conveyor will be prioritized. Flows will be allowed to enter the Conveyor in their order of priority. The inflows will show their priority number in their dialogs. Chapter 14 describes the inflow prioritization scheme used by the software.

Outflow Dialog Operations: A maximum of two outflows are allowed-both must be Uniflows.

The first flow created is designated as the flow-thru. To learn about:

- Basic flow-thru dialog operations, see Figure 4-30.

- Sampling of transit time, see Figure 4-31.

- Arresting the operation of the Conveyor, see Figure 4-32.

The second flow created is designated as the leakage flow. To learn about its dialog see Figure 4-33.

Figure 4-30 Conveyor Flow-thru Dialog - Basic Operations

Figure 4-31 Conveyor Flow-thru Dialog - Sampling Transit Time

Figure 4-32 Conveyor Flow-thru Dialog - Arrest Mode

Figure 4-33 Conveyor Leakage Dialog