Kanban's place in Inventory Management tools 

Kanban is often linked to inventory management - and while is can definitely play a big role in that, kanban itself will not provide the stock levels, order quanities or most of your inventory management rules.
It's a system to physically and visually manage the stock that you have in your warehouse and provide the signals needed in your stock management system.
This video goes into the role of kanban cards in a typical warehouse and specifically discusses the 2-bin kanban system that greatly simplifies your stock replenishment.