110 Safety functions
Step Description
1 The SSE request is received (for example, from the I/O). The FSO activates the drive
STO function and starts a counter for time A. SSE active indication SSE output
(SSE.21) and STO output (STO.21) go on.
2 After time A has elapsed, the FSO activates the SBC and starts a counter for time B.
3 After time B has elapsed, the FSO module defines the motor as stopped and the SSE
completed indication goes on. The acknowledgement becomes allowed as soon as the
SSE request has been removed (step 4).
4 The SSE request is removed.
5 After the acknowledgement, the SSE, STO and SBC functions are deactivated and the
control is given back to the drive, which controls the brake from now on. The indications
SSE output (SSE.21), SSE completed output (SSE.22), and STO output (STO.21) go
off.
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