ABB FSO-21 User Manual

Configuration 373
constant even if the scaling value is decreased further. Zero speed value is less than
the 5 rpm and has no effect to the trip limit scaling.
 Related safety functions
The Variable SLS function uses SAR1 parameters to monitor and/or define the
deceleration ramp (Variable SLS with ramp monitoring). See section Configuring SAR
on page 361.
The FSO module activates the STO function if the motor speed hits a ramp
monitoring limit during the deceleration ramp (Variable SLS with ramp monitoring).
See section Configuring STO on page 331.
The FSO module activates the SSE function if the motor speed hits a trip limit. See
section Configuring SSE on page 351.
A Scaled SLS4 trip limit
B Scaled SLS4 limit
C Zero speed value
D The difference between SLS4 limits is 10 rpm when the scaling factor is 100%
E The difference between the scaled SLS4 limits is 5 rpm if the scaling value is 50% or less
Speed
Scaling value (%)
100
0
50
A
B
C
D
75 25
E

ABB FSO-21 Specifications

General

Brand	ABB
Model	FSO-21
Category	Control Unit
Language	English