160 Safety functions
Step Description
1 The SLS request is received. The motor speed is above the SLS trip limit positive (A).
The drive starts to ramp down the motor speed.
The FSO starts the counter for the SLS time delay (C) (parameter SLSx.04)
The drive (parameter 23.13 or 23.15) defines the deceleration ramp until the speed
reaches the SLS limit.
2 The drive trips on a fault, there is a drive power loss, or user stops the drive by coast
stop.
SLS Modoff delay time starts (parameters SLSx.05 & SLSx.06).
3 Modulation of the drive returns before the SLSx.06 Modoff delay time has run out.
4 Modoff delay time limit. If the modulation would not return before this time, see previous
case.
5 Speed is below the monitoring limit and SLS monitoring is started.
6 The FSO starts the SLS monitoring at the latest here, that is, after the SLS time delay
has elapsed. The FSO starts the SLS monitoring when the motor speed is in the middle
of the SLS limit and the SLS trip limit (see also section How to configure mute time for
monitoring start on page 399). The SLS indication (parameters SLSx.15, SLSx.24,
SLSx.34 or SLSx.44) goes on.
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