ABB FSO-12 User Manual page 68

68 Safety functions
With ramp monitoring (SS1-r)
The operation of the SS1-r function with speed limit activated SBC is described in the
time diagram and table below. For configuration, see section
with speed limit activated SBC
Motor speed
C
A
1 2
A SBC speed (parameter SBC.15): Speed limit below which the FSO activates the SBC
(brake) and drive STO functions while ramping.
B SBC time to zero (parameter SBC.13): Time from the SBC activation to the moment
when the safety function is completed and the SS1 completed indication (parameter
SS1.21) goes on. The acknowledgment becomes allowed. You must set this to the
estimated time in which the motor brakes to a stop from the maximum speed.
C Response time (depends on system configuration, see page 382)
Ramp monitoring limits
on page 240.
- -> Safe torque off (STO)
B SBC.13
3b 3
How to configure SS1
5 6
4
SS1 request
Drive STO state
& indication
SBC output
SS1 state &
indication
SS1 completed
indication
SAR1
monitoring
Time