Implementing The Prevention Of Unexpected Start-Up Function; Implementing An Atex-Certified Motor Thermal Protection; Implementing The Functions Provided By The Fso Safety Functions Module - ABB ACS880-37LC-0390A-7 Hardware Manual

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.
Option
code
+Q950 Prevention of unexpected start-up, with FSO-xx safety functions module
+Q957 Prevention of unexpected start-up, with safety relay

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 +L537), or
acquire and install an ATEX-compliant protection relay
• do the necessary connections.
For cabinet-built drives, an ATEX-certified motor thermal protection function is also available
(option +L513+Q971, or +L514+Q971). The drive is equipped with an ATEX-certified Safe
motor disconnection function and with ATEX-compliant protection relays for PTC or Pt100
temperature sensors.
For more information, see:
User's manual
ATEX-certified Safe disconnection function, Ex II (2) GD for ACS880 drives (+Q971)
application guide
FPTC-02 ATEX-certified thermistor protection module, Ex II (2) GD (option +L537+Q971)
for ACS880 drives user's manual
ATEX-certified motor thermal protection functions for cabinet-built ACS880 drives (options
+L513+Q971 and +L514+Q971) user's manual
Implementing the functions provided by the FSO safety
functions module
You can order the drive with an FSO-12 safety functions module (option +Q973) or FSO-21
safety functions module (option +Q972). An FSO 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).
Guidelines for planning the electrical installation 87
User's manual Manual code
(English)
3AUA0000145922
3AUA0000119910
Manual code
(English)
3AUA0000132231
3AXD50000027782
3AXD50000014979