ABB ACS880-07 Series - Implementing the emergency stop function; Implementing the Prevention of unexpected start-up 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 nuisance faults in residual current devices.
Implementing the emergency stop function
You can order the drive with an emergency stop function (option).
See the appropriate option manual for more information.
Manual code
(English)
User’s manualOption
code
3AUA0000119895Emergency stop, stop category 0 (using main contactor/breaker)+Q951
3AUA0000119896Emergency stop, stop category 1 (using main contactor/breaker)+Q952
3AUA0000119908Emergency stop, stop category 0 (using Safe torque off)+Q963
3AUA0000119909Emergency stop, stop category 1 (using Safe torque off)+Q964
3AUA0000145920Emergency stop, stop category 0 or 1 (using main contactor/breaker and Safe
torque off)
+Q978
3AUA0000145921Emergency stop, stop category 0 or 1 (using Safe torque off)+Q979
Implementing the Safe torque off function
See chapter The Safe torque off function (page 245).
Implementing the Prevention of unexpected start-up
function
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.
Manual code
(English)
User’s manualOption
code
3AUA0000145922Prevention of unexpected start-up, with FSO-xx safety functions module+Q950
3AUA0000119910Prevention of unexpected start-up, with safety relay+Q957
Implementing an ATEX-certified motor thermal protection
With option +Q971, the drive provides ATEX-certified safe motor disconnection without
contactor using the drive Safe torque off function. To implement the thermal protection of
a motor in explosive atmosphere (Ex motor), you must also:
• use an ATEX-certified Ex motor
• order an ATEX-certified thermistor protection module for the drive (option +L357), or
acquire and install an ATEX-compliant protection relay
• do the necessary connections.
Guidelines for planning the electrical installation 101