Sls Trip Limit Hits - ABB FSO-21 User Manual

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SLS trip limit hits

If the motor speed goes above/below an SLS trip limit, the FSO activates the SSE
function. The operation of SLS and SSE indications in SLS trip limit hit situations are
described in the diagrams and tables below. For more information on the SSE
function, see section
SSE with immediate STO, without an encoder
This applies when the SSE function has been configured as "Immediate STO".
Motor speed
B
1 2
A SLS trip limit positive (parameter SLSx.14, SLSx.23,
B SLS limit positive (parameter 200.23, 200.33,
C Response time (depends on system configuration, see page 437)
D Time to zero speed (parameter STO.14)
SLS trip limit (A)
Safe stop emergency (SSE)
- -> Safe stop emergency (SSE)
C STO.14
D
3
4
on page 93.
A
5 6
SLSx.33
200.43 or 200.53)
Safety functions 133
Time
7
SLS request
SLS indication
SSE state &
indication
SSE completed
indication
or SLSx.43)