ABB ACS880-17 - Page 49

Parameter settings 49
STO.13 Restart delay after
STO
2000 ms Sets the time after which the restart of the drive is allowed
after the FSO module has activated the STO function and
opened the drive STO circuit. 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) or STO input B
(STO.12).
STO function
: 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 STO.13.
SS1 function
: This value has no effect.
STO.14 Time to zero speed
with STO or modoff
2000 ms Sets the time after which the acknowledgement is allowed
after coast stop in the STO and SSE functions. Set this
parameter value to the estimated time in which the motor
coasts to a stop from the maximum speed.
STO function:
This parameter sets the time after which the
STO function is completed. Parameter STO.13 defines the
time after which the restart of the drive is allowed. Adjust the
value when necessary.
SS1 function
: This parameter is used only when the motor
speed does not follow the ramp settings or the time
monitoring limit is exceeded and the FSO module activates
the STO function. Adjust the value when necessary.
When a safety encoder is used:
This parameter is relevant
only if an encoder or FSE module failure occurs. The FSO
module goes into the Fail-safe mode and activates the STO
function. For more information, see the FSO-21 module
user’s manual.
Note: The default value after factory reset is 3,600,000 ms.
Always check this parameter after factory reset.
SBC usage
SBC.11 STO SBC usage None Sets how the mechanical brake is used together with the
STO function.
In the safety functions described in this manual, this feature
is not used and this parameter has value None.
ACS880-07/17/37 drives with the option +Q978
: The SBC
function is used in the emergency stop implementation to
control the auxiliary safety relay(s) which is connected to the
main contactor/breaker. Make sure that the value is Delayed
brake.
Index Name Example
value
Description
00 ACS880 ATEX cabinet.book Page 49 Tuesday, May 28, 2019 10:25 AM