Example 1: Modoff delay time – modulation returns before modoff delay
The operation of the SLS function in case of the modulation of the drive is lost during the
deceleration ramp and the modulation returns before the Modoff delay time has run out with
Modoff delay time selected (parameter SLSx.05 is set to Modoff delay time) is described in
the time diagram and table below.
Motor speed
Time
A
A
Drive modulation
SLS request
SAR1 monitoring
SLSx.06 Modoff
delay time monitoring
SLS monitoring
SLS indication
B
C
D
SAR1 ramp monitoring
A
Actual motor speed (coasting after modoff)
B
SLS trip limit
C
SLS limit
D
Option description 23