Lenze E94AYAE SM301 - Manual (Page 36)

3 Safe configuration
3.7 Safe inputs
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Lenze · SM301 safety module · Parameter setting & configuration · DMS 2.3 EN · 11/2013 · TD05
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Free assignment
If "Free assignment" has been selected as sensor function, the safety function selected via this
parameter is assigned to the safe input. The following safety functions can be selected:
• Safe torque off (STO) ( 44)
• Safe stop 1 (SS1) ( 45)
• Safe stop 2 (SS2) ( 46)
• Safely limited speed (SLS) ( 52)
• Safe direction (SDI) (from SM301 V1.3) ( 58)
Discrepancy time
Maximum time for which both channels of a safe input may have non-equivalent states without
the safety system detecting an error.
Input delay
Time between the recognition of the signal change and the effective evaluation of an input signal.
As a result, multiple and short signal changes due to contact bounce of the components are not
taken into account.

Note!
If "No function" has been selected, no safety function is assigned to the safe input. The
functional test and monitoring of the discrepancy time remain active and the status of
the input is transmitted to the control via the safety bus (if parameterised).