Objects of the value stream toolbox > Storage objects

Contents

1. Brief description

The object warehouse (inventory) represents an uncontrolled stock of products in a passive withdrawal warehouse.

Parts are conveyed into the warehouse by means of a push constellation in order to be subsequently requested or withdrawn by an order-controlled successor process.

An active forwarding without order reference does not take place, i.e. the warehouse must have an order-controlled process as successor (except special constellations for assembly).

(For an active part forwarding, see Inventory (Push)).

2. Procedure and control description

An Inventory receives products on a workpiece carrier, removes them, and stores the parts.

With storage, products are thus computationally compressed onto workpiece carriers, i.e. with workpiece carrier limitation, only the theoretical capacity of the forwarding quantity of the process predecessors is assumed.

If products are required for a subsequent process object, they are forwarded to the requesting process on workpiece carriers.

The workpiece carrier capacity is also reused by the preceding processes;

depending on the requested order quantity of the succeeding process, workpiece carriers from the warehouse towards the succeeding process may not be completely filled (according to the maximum capacity of the forwarding quantity from the preceding process).

If there are not enough parts stored for an order of a subsequent process, the requesting object must wait until parts arrive and have been stored.

After the product has been put away, all waiting objects will be notified for a new parts request. Note that it may happen again that not all part requests can be fulfilled and that the requesting parts have to wait again.

3. Parametrization

20230413_lager_parameter_EN

Figure 1 - Inventory

Process Parameter	Required	Description
Name	no	Name of the object
Products	no	Products of the object
Delay time before storage	yes	The parts are delayed for storage, so that the inventory posting is only made after the time posting. Subsequent processes can therefore only access the parts in stock once the time delay has expired.
Max. number carrier (storage)	yes	Maximum number of carriers
Comment	no	Custom notes and annotations

Product Parameter	Required	Description
Product	yes	Product to be stored
Initial stock	yes	Initial stock that has already been put away at the start of the simulation.
Max. number carrier (product)	yes	Maximum number of carriers within the inventory per product (can be deactivated). Calculated quantity of products in a carrier will be based on the transfer quantity of upstream processes in relation to the single product quantity (current number of carriers = number parts in storage / transfer quantity processes upstream)

4. Connection types

See chapter Possible connections to objects.