Example 5: Monitoring and modoff delay time disabled
In this example, parameter SLSx.05 is set to Monitoring and modoff delay time disabled.
The time diagram below describes the operation of the SLS function when modulation is
lost during the deceleration ramp.
SLS indication
Motor speed
Time
B
Drive modulation
SLS request
SLSx.04 time
delay monitoring
C
D
STO.14 delay
Actual motor speed (coasting after modoff)B
SLS trip limitC
SLS limitD
￭ SMS function
The FSO module includes two versions of the SMS function. This manual describes version 1.
Version 2 of the SMS function is similar to the SLS function except that it can only be
configured to be continuously on or off.
The user selects the version of the SMS function and sets the SMS maximum and minimum
speed limits at the start-up. For more information, see chapter Parameter settings and the
FSO module user's manual.
If the motor speed reaches the SMS trip limit positive or negative, the FSO module activates
the Safe stop emergency (SSE) function. Depending on parameter settings, the FSO module
activates the drive STO either immediately or after a deceleration ramp. The motor coasts
to a stop, or decelerates to zero speed.
28 Option description
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