190 Safety functions
SDI with ramp monitoring
This applies when the motor rotates into the forbidden direction when the SDI is
activated and the ramp monitoring method is used. The SDI positive function is used
as an example.
A Zero speed with encoder (parameter FSOGEN.52): Speed limit to define the motor as
stopped. The safety function is completed and the STO completed indication (parameter
STO.22) goes on. The STO acknowledgment becomes allowed.
Ramp monitoring limits
SDI state &
indication
SDI request
Motor speed
Time
A
1 2
4
2b
3b
SAR1
monitoring
STO state &
indication (2b)
3
- -> Safe torque off (STO)
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