ABB ACS880-107LC Hardware Manual page 26

26 Operation principle and hardware description
Code Description
Q966 Safely-limited speed without encoder
Q971 ATEX-certified safe disconnection function
Q972 FSO-21 safety functions module
Q973 FSO-12 safety functions module
Q982 PROFIsafe with FSO-xx safety functions module and FPNO-21 Ethernet adapter module