Safety functions 151
SLS reaction if modulation is lost with Monitoring active
The operation of the SLS function in case the modulation of the drive is lost during the
deceleration ramp with Monitoring active selected (parameter SLSx.05 is set to
Monitoring active) is described in the time diagram and table below. For configuration,
see section How to configure SLS function behavior when drive modulation is lost on
page 376.
A SAR1 ramp monitoring
B Actual motor speed (coasting after modoff)
C SLS trip limit
DSLS limit
E Last valid speed estimate of FSO
STO active
Motor speed
Time
1 3 42
A
A
Drive modulation
SLS request
SAR1 monitoring
SLS indication
E
B
C
D
STO.14 delay
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