ABB ACS880 - Implementing the Emergency Stop Function; Cabinet-Installed Multidrives; Multidrive Modules; Implementing the Safe Torque off Function

Note: As standard, the drive contains capacitors connected between the main circuit and
the frame. These capacitors and long motor cables increase the ground leakage current
and may cause fault current circuit breakers to function.
Implementing the Emergency stop function
￭ Cabinet-installed multidrives
You can order the drive with an emergency stop function (option).
See the appropriate option manual for more information.
Manual code (Eng-
lish)
User’s manualOption code
3AUA0000119885Emergency stop, stop category 0 with opening the main contactor
or breaker with safety relays
+Q951
3AUA0000119886Emergency stop, stop category 1 with opening the main contactor
or breaker with safety relays
+Q952
3AUA0000119891Emergency stop, stop category 0 without opening the main con-
tactor or breaker with safety relays
+Q963
3AUA0000119893Emergency stop, stop category 1 without opening the main con-
tactor or breaker with safety relays
+Q964
3AUA0000145933Emergency stop, configurable stop category 0 or 1 with FSO-xx
safety functions module
+Q979
￭ Multidrive modules
For safety reasons, install the emergency stop devices at each operator control station and
at other operating stations where emergency stop may be needed. Implement the emergency
stop according to relevant standards.
Note: You can use the Safe torque off function of the drive to implement the Emergency
stop function.
Implementing the Safe torque off function
The safe torque off (STO) input is available as standard in all inverter units. See the inverter
unit hardware manual for implementing the Safe torque off function.
Implementing the Prevention of unexpected start-up
function
￭ Cabinet-installed multidrives
You can order the drive with a Prevention of unexpected start-up (POUS) function. The
POUS function disables the control voltage of the power semiconductors of the drive (inverter)
output stage. This prevents the drive from generating the torque required to rotate the motor.
POUS enables a short-time maintenance work (like cleaning) on the non-electrical parts of
the machinery without switching off and disconnecting the drive.
See the appropriate option manual for more information.
Electrical planning guidelines 37