ABB ACS880-17 - Safety Data and Block Diagrams

Introduction to the manual 27
STO Safe torque off. See chapter The Safe torque off function (page 199).
ZCU Control unit type. The drive contains two ZCU control units. One controls the line-side
converter, the other the motor-side converter.
See also Control unit, control board and Drive control unit.
ZMU The memory unit attached to the control unit of the drive
Term/
Abbreviation
Explanation