Lenze E94AYAE SM301 - Manual (Page 43)

Lenze · SM301 safety module · Parameter setting & configuration · DMS 2.3 EN · 11/2013 · TD05
43
3 Safe configuration
3.9 Safety functions
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3.9.1.2 Restart behaviour
The restart behaviour of the drive after a stop function has been executed can be set via the
following parameters:
• "Restart behaviour - STO, SS1" ( C15300/1 )
• "Restart behaviour - SS2, SOS" ( C15300/2 )
Restart behaviour in the case of the "Acknowledged restart" setting
• After a standard stop the restart must be acknowledged (AIS) via terminal or safety bus.
• After an error stop, the error must be acknowledged first (AIE), before the restart is
acknowledged with AIS.
Restart behaviour in the case of the "Automatic restart" setting
The higher-level control must ensure that the drive only restarts after an acknowledgement. The
stop status of the drive is reported to the higher-level control via bit STO or SOS.
The following applies to SM301 from V1.1:
If the "Safe cascading" safety function is active, an automatic restart after STO is not permissible.
The plausibility check rejects such a setting.  Cascading (CAS) ( 57)

Danger!
If the request for the safety function is cancelled, the drive can restart automatically.
In the case of an automatic restart, you have to provide external measures which ensure
that the drive only restarts after a confirmation (EN 60204).
Acknowledgement via terminal via safety bus
AIS X82.3 or X82.4
(Positive signal pulse with a signal duration
of 0.3 ... 10 s)
PROFIsafe bit "PS_AIS" (positive edge)
 Safety bus ( 59)
AIE X82.2
(Positive signal pulse with a signal duration
of 0.3 ... 10 s)
PROFIsafe bit "PS_AIE" (positive edge)
 Safety bus ( 59)

Note!
The restart behaviour after an emergency stop corresponds to the restart behaviour
parameterised for the STO/SS1 stop function.