Implementing The Safe Torque Off Function - ABB ACS880-17 Hardware Manual

82 Guidelines for planning the electrical installation

Implementing the Safe torque off function

See chapter The Safe torque off function
Implementing the ATEX-certified Safe motor
disconnection function (option +Q971)
With option +Q971, the drive provides ATEX-certified safe motor disconnection without
contactor using the drive Safe torque off function. Option +Q971 is available with options
+L537, +L513 or +L514.
For more information, see
•
FPTC-02 ATEX-certified thermistor protection module, Ex II (2) GD (option
+L537+Q971) for ACS880 drives user's manual (3AXD50000027782 [English])
•
ATEX-certified motor thermal protection functions for cabinet-built ACS880 drives
(options +L513+Q971 and +L514+Q971) user's manual (3AXD50000014979
[English]).
Implementing the Prevention of unexpected start-up
function
The drive can be equipped with a Prevention of unexpected start-up (POUS) function
either with an FSO-xx safety functions module (option +Q950) or with a safety relay
(option +Q957). The POUS function enables short-time maintenance work (like cleaning)
on the non-electrical parts of the machinery without switching off and disconnecting the
drive.
See the appropriate user's manual for the wiring, start-up and operation instructions.
Option
code
+Q950 Prevention of unexpected start-up, with FSO-xx safety functions module
+Q957 Prevention of unexpected start-up, with safety relay
Implementing the functions provided by the FSO-xx
safety functions module (option +Q972 or +Q973)
The drive can be equipped with an FSO-xx safety functions module (option +Q972 or
+Q973) which 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 connectors
of the module are pre-wired to terminal block X68. 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 motor-side
control unit. STO can still be utilized by other safety circuits through the FSO-xx.
For wiring instructions, safety data and more information on the functions provided by the
FSO-xx, refer to its manual.
Declaration of Conformity

See page 177.
(page 199).
User's manual
Manual code
(English)
3AUA0000145922
3AUA0000119910