Fast Payment Services: Allows you to set transaction limitations on the Swipe transactions. You can only set signature limits for swipe.
EMV Signature Limits: EMV transactions do not allow signature limits you either request a signature for ALL transactions or none.
EMV Signature: EMV is the most secure form of payment so if the merchant has EMV signature enabled and the receipt does not have a signature line this means the Bank does not require one. It is up to the Bank if they want to capture a signature or not on EMV transactions.