Use

In classic Kanban, the following are defined in the control cycle: the demand source (consumer), the supply source (supplier), the procedure to be used to replenish the material, the number of kanbans that circulate between the supply source and the demand source, and the quantity per kanban.

In classic Kanban, the kanban signal only ever triggers replenishment for the quantity per kanban defined in the control cycle. Moreover, you cannot have more kanbans in circulation than specified in the control cycle without changing the control cycle.