Ss1 With Time Monitoring (Ss1-T) - ABB FSO-21 User Manual

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SS1 with time monitoring (SS1-t)

The operation of the SS1 with time monitoring (SS1-t) is described in the time
diagrams and tables below. For configuration, see section
time monitoring (SS1-t)
Without an encoder
Motor speed
C
B
1
2
A SS1-t delay for STO (parameter SS1.14): Time after which the FSO activates the STO
function regardless of the motor speed.
B Zero speed (parameter FSOGEN.51): Speed limit for activating the drive STO function.
The safety function is completed and the SS1 completed indication (parameter SS1.22)
goes on.
C Response time (depends on system configuration, see page 437)
on page 273.
A SS1.14
3 3b
How to configure SS1 with
- -> Safe torque off (STO)
5
4
Safety functions 69
Time
SS1 request
Drive STO state
& indication
SS1 state &
indication
SS1 completed
indication