Hardware Manual

Table Of Contents
80 Planning the electrical installation
Connecting drives to a common DC system
See ACS880-01 drives and ACS880-04 drive modules common DC systems
application guide (3AUA0000127818 [English]).
Implementing the Emergency stop function
For safety reasons, install the emergency stop devices at each operator control
station and at other operating stations where emergency stop may be needed. You
can use the Safe torque off function of the drive to implement the Emergency stop
function. See chapter Safe Torque off function on page 229.
Note: Pressing the stop key on the control panel of the drive does not generate
an emergency stop of the motor or separate the drive from dangerous potential.
Implementing the Safe torque off function
See chapter Safe Torque off function on page 229.
Implementing the safety functions with the FSO module
The drive can be equipped with a safety functions module as factory installed (option
+Q973). The module is also available as a retrofilt kit. The safety functions module
enables the implementation of functions such as Safe brake control (SBC), Safe stop
1 (SS1), Safe stop emergency (SSE), Safely limited speed (SLS) and Safe maximum
speed (SMS).
The settings of the FSO-xx are at default when delivered from the factory. The wiring
of the external safety circuit and configuration of the FSO-xx module are the
responsibility of the machine builder.
The FSO-xx reserves the standard Safe torque off (STO) connection of the drive
control unit. STO can still be utilized by other safety circuits through the FSO-xx.
For the installation of the safety functions module, see section Installation of safety
functions modules on page 119. For wiring instructions, safety data and more
information on the option, see FSO-12 safety functions module user’s manual
(3AXD50000015612 [English]).
Declaration of Conformity
See page 202.
Implementing the ATEX-certified Safe motor disconnection
function (option +Q971)
With option +Q971, the drive supplies ATEX-certified safe motor disconnection
without contactor that uses the drive Safe torque off function. For more information,
see ACS880 ATEX-certified Safe disconnection function application guide