ABB FSO-21, User Manual

Page: 414 / 540

414 Parameters
SBC.13 SBC time to zero
speed
Sets the estimated time from the SBC
activation to the moment when the safety
function is completed and the STO
completed indication (parameter
STO.22 )
goes on (ie, motor has stopped and the
system can be set to a safe state).
Must be configured to the estimated time in
which the external brake decelerates the
motor to a stop from the maximum speed.
The total delay from the moment the FSO
module has activated the drive STO function
until the system is in safe state becomes:
STO SBC delay ( SBC.12 ) + SBC time to
zero speed ( SBC.13 ).
Note : If the value of SBC time to zero speed
( SBC.13 ) is less than 800 ms (the feedback
delay), the total delay becomes:
STO SBC delay ( SBC.12 ) + 800 ms.
When an encoder is used: This parameter is
relevant only if there is an encoder failure
and the FSO module activates the STO and
SBC functions.
3,600,000
ms
0…3,600,000 ms Time
SBC.14 STO SBC speed Sets the speed limit below which the FSO
module activates the brake (SBC) in the
STO function.
Requires that an encoder is
used and parameter SBC.11 STO SBC
usage is set to value Speed limit . If the value
is 0.0 rpm , this feature is not in use.
Note : This is the absolute value. The same
value is used in both positive and negative
directions.
0.0 rpm
0.0…1000.0 rpm Speed
SBC.15 SSE/SS1 SBC
speed
Sets the speed below which the FSO
module activates the brake (SBC) while
ramping in the SSE and SS1 functions. If the
value is
0.0 rpm , this feature is not in use.
Note : This is the absolute value. The same
value is used in both positive and negative
directions.
0.0 rpm
0.0…1000.0 rpm Speed
SBC.21 SBC output Sets the digital output that is connected to
the SBC output (brake relays). None
None No output connected
DO X113:7 & X114:7 Redundant output X113:7 & X114:7
Index Name/Value Description Factory
default