The key variable in any kanban calculation or simulation is expected average daily demand. This quantity is determined for each item in a kanban circuit. You can enter the average daily demand manually or have the system calculate it automatically.
The possible demand sources are as follows:
If the system performs the calculation, it uses daily demands retrieved from either sales quotation/customer order, customer schedule/customer order, MS/MRP or production schedule. These quantities can be used in simulations to show the effects of demand fluctuations over time.
MS/MRP is the demand source for each kanban item that is planned using the conventional master scheduling/MRP planning tools but executed through kanban. If the item is master scheduled, demand is equal to master scheduled receipts. If it is MRP planned, demand is equal to net requirements.
Production Schedule is the demand source for kanban-controlled components or subassemblies that are pulled in support of a production-scheduled assembly line. By entering a value in the Supply To Line field on the Kanban Circuit page, you can select a specific production line from which to retrieve demand. If this value is not specified, the system will retrieve demand from all production lines.
The Sales Quotation/Customer Order is the demand source for finished goods that are not master scheduled. The demand is equal to the release-planned sales quotations and the customer orders which are not pegged to a supply order.
The Customer Schedule/Customer Order is the demand source for finished goods that are not master scheduled. The demand is equal to the planned customer schedules and the customer orders, which are not pegged to a supply order already.