Lenze E94AYAE SM301 - Manual (Page 78)

Safety engineering
Safety functions
Safe operation mode selector
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78 EDS94AYAE EN 7.0
1.3.11 Safe operation mode selector
1.3.11.1 Description
Operation Mode Selector / OMS
The function provides a special operation of the drive. In the special operation the drive is
stopped (status 2). The drive can be traversed in the special operation via an enable switch
(status 3).
For the stop status in the special operation, the STO, SS1 or SS2 functions can be
parameterised.
For motion functions in the special operation, the SLS function (from V1.3 onwards
combinable with SDI) or free movement (from V1.4 onwards combinable with SLI
function) can be parameterised. The parameterised monitoring function will be
automatically activated with the transition to the special operation.
The special operation enables an override of the simple STO, SS1, and SS2 stop functions
by the enable switch.
Also in special operation, activated SMS, SDI and SLS monitoring functions are continued
to be executed. An error detected in the monitoring functions, also in special operation,
leads to the parameterised error stop function. Depending on the priority, the
parameterised stop function of the monitoring function or the stop function of the special
operation is executed without approval.
An active emergency stop function is also executed in special operation.
The special operation can also be selected via the safety bus by the F−PLC, unless a safe
input is parameterised as operation mode selector.
The return to normal operation is only possible in the stop status. Since the drive is stopped
in status 2, the AIS acknowledgement is required for restart. The parameters for the restart
STO/SS1 or SS2 are used.
)
Note!
When returning to normal operation, the automatic restart is not permissible.
If "automatic restart" is parameterised, this can be prevented by special
measures, e.g. programming in the higher−level control.
)
Note!
The "safe enable switch" function serves to directly cancel/complete the
stopping times assigned to the stop functions.
)
Note!
Monitoring of the safely limited increment (from SM301 V1.4 onwards) in
special operation is active if a value > 0 has been selected for C15203.