Safety Integrated Extended Functions
6.7 Safely-Limited Speed (SLS)
Safety Integrated
96 Function Manual, 05/2010, A5E03264275A
Restart after OFF2
If the drive has been switched off via OFF2/STO, the following steps must be carried out
before a restart can be performed:
1. scenario:
● State after switching on: SLS selected, STO selected, OFF2 active
● Deselect STO
● The drive enable must be given within 5 seconds via a positive edge at OFF1, otherwise
STO is reactivated.
2. scenario
● Situation: Run until standstill with SLS selected, then OFF2 activated
● Select STO
● Deselect STO
STO activated internally via OFF2: This activation must be undone by
selection/deselection.
● The drive enable must be given within 5 seconds via a positive edge at OFF1, otherwise
STO is reactivated.
3. scenario
● Situation: Run until standstill with SLS selected, then OFF2 activated
● Deselect SLS
● Select SLS
STO activated internally via OFF2: This activation must be undone by
selecting/deselecting SLS.
● After this the drive enable must be given by a positive edge at OFF1.
4. scenario
● Situation: All Safety Integrated Functions are deselected
● After this the drive enable must be given by a positive edge at OFF1.
Note
In the 4th case the motor is not reliably started.
Brake rampe for "Safely-Limited Speed"
p9581/p9381 and p9583/p9383 are used to set the steepness of the brake ramp.
Parameters p9581/p9381 determine the reference speed and parameters p9583/p9383
define the monitoring period. Parameters p9582/p9382 are used to set the time which
elapses between the switchover to a lower SLS speed level and the start of brake ramp
monitoring.
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