Option Description; Contents Of This Chapter; Overview - ABB ACS880-07 User Manual

Option description 17

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Option description

Contents of this chapter

This chapter describes the +Q952 emergency stop option and its settings.

Overview

The option +Q952 corresponds to a controlled stop in accordance with stop category 1
(IEC/EN 60204-1). When the user gives the emergency stop command, the drive decelerates
the motor(s) to zero speed according to a preset ramp time. Then, the drive opens the main
contactor/breaker, which disconnects the input power from the drive.
For the option +Q952, ABB installs the FIO-01 digital I/O extension module (option +L501)
to the drive control board (Slot 1).
Note: Drives with the Prevention of unexpected start-up (POUS) option (+Q957): If the user
activates the POUS function during the emergency stop deceleration ramp, it overrides the
emergency stop function. This activates the Safe torque off (STO) function of the drive
immediately and the motor coasts to a stop. For more information on the POUS safety
function, see Prevention of unexpected start-up (option +Q957) for
ACS880-07/07LC/17/17LC/37/37LC drives (3AUA0000119910 [English]).
The drive main circuit is de-energized while the emergency stop is active and the main
contactor/breaker is open, but the auxiliary circuit stays energized. Note that activating the
emergency stop function does not isolate the drive or motor from dangerous voltages.
The design principles of the option +Q952 comply with EN ISO 13850.
For a list of related standards and European directives, see section Related standards and
directives (page 55).