￭ Parameters for the STO function
These parameters are related to the STO function of the FSO module. The Emergency stop,
stop category 0 option uses this function. The FSO module can activate the STO function
in internal fault situations.
DescriptionExample valueNameIndex
Sets the acknowledgement method used
in the STO, SSE and SS1 functions.
ManualSTO acknowledge-
ment
STO.02
Manual: The FSO module reads the extern-
al acknowledgment signal through the digit-
al input defined by parameter FSOGEN.42.
In the safety functions described in this
manual, the user acknowledges the safety
function manually with the emergency stop
reset button. Make sure that the value is
Manual.
WARNING! If the value is Automat-
ic, the FSO module resets the STO
function automatically after the
user has released the emergency
stop button and the drive can re-
start automatically (if automatic
start mode is used). This can
cause danger.
Sets the digital input that is connected to
the primary input of the STO function.
Stop cat. 0: DI
X113:1 & X114:1
STO input ASTO.11
Emergency stop, stop category 0: For the
option +Q978, ABB has connected the
emergency stop button to this digital input
at the factory. Make sure that the setting
corresponds to the circuit diagrams of the
delivery.
Stop cat. 1: None
Emergency stop, stop category 1: Make
sure that this parameter has value None.
(An external signal cannot start the STO
function.)
Note: The default value after factory reset
is DI X113:1&X114:1. Always check this
parameter after factory reset.
Sets the time after which the restart of the
drive is allowed after the FSO module has
activated the drive STO function and
opened the main contactor/breaker. With
this parameter, you can allow a restart of
the drive before the motor has stopped (fly-
start). This parameter is valid only if the
STO function is requested from STO input
A (STO.11).
2000 msRestart delay after
STO
STO.13
Emergency stop, stop category 0: Adjust
the value when necessary. If you do not
want to use the fly-start feature, set this
parameter to the same value as parameter
SBC.13.
Emergency stop, stop category 1: This
value has no effect.
46 Parameter settings
To Next Page
Loading...
Need help?
General