Parameters For The Sto Function - ABB ACS880 Series User Manual

46 Parameter settings
￭

Parameters for the STO function

These parameters are related to the STO function of the FSO module. With stop category
0, the FSO module activates the STO function in overtemperature situations. Also, the FSO
module can activate the STO function in fault situations.
Index Name
STO.02 STO acknowledge-
ment
STO.11 STO input A
STO.12 STO input B
STO.13 Restart delay after
STO
Example value Description
Automatic Sets the acknowledgement method used in the STO,
SSE and SS1 functions.
Automatic: The FSO module resets the STO function
automatically after the STO request is removed.
Manual: The FSO module reads the external acknow-
ledgement signal through the digital input defined by
parameter FSOGEN.42. In the safety functions de-
scribed in this manual, you can use this setting to im-
plement a manual reset for the motor temperature
protection function in the FSO module.
ACS880-07/17/37 and ACS880-17LC/37LC drives with
the option +Q978 or +Q979: The FSO module is con-
figured so that after the safety function activation, the
user must reset the FSO manually with the emergency
stop reset button (this parameter is set to Manual). In
this case, the user must reset the FSO module with the
emergency stop reset button also when motor overtem-
perature is reached. Do not change this setting.
None Sets the digital input that is connected to the primary
input of the STO function.
In the safety functions described in this manual, this
parameter has value None.
ACS880-07/17/37 and ACS880-17LC/37LC drives with
the option +Q978 or +Q979: 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.
ACS880 multidrives with the option +Q979: ABB has
connected the emergency stop safety relay to this digital
input at the factory. Make sure that the setting corres-
ponds to the circuit diagrams of the delivery.
STO: DI X113:4 Sets the digital input that is connected to the secondary
input of the STO function.
SS1: None
For the safety functions described in this manual, ABB
has configured the contacts of the PTC/Pt100 relay to
this digital input at the factory. Make sure that the set-
ting corresponds to the circuit diagrams of the delivery.
If you set this parameter to DI X113:4, set parameter
SS1.12
2000 ms Sets the time after which the drive can restart when the
FSO module has activated the STO function and
opened the drive STO circuit. With this parameter, you
can let the drive restart before the motor has stopped
(fly-start). This parameter is applicable 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 paramet-
er to the same value as parameter STO.14.
SS1 function: This value has no effect.
to None.