Below shows the Kardex Solution - 3 Shuttle XP's processing orders. This is a working site and you can see delays at some of the picks to confirm and check orders.
The machines are ahead of the operator and the picks are timed as follows.
First pick is at 15 seconds - allowing for order setup.
1 minute - 4 items are picked - 240 lines picked per hour.
2 minutes - 7 items are picked - 210 lines picked per hour.
3 minutes - 11 items are picked - 220 lines picked per hour.
4 minutes - 15 items are picked - 225 lines picked per hour.