Siemens Sinumerik 840D sl Function Manual page 37

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S Safe acceleration monitoring (SBR)
Monitors the speed characteristic. The speed must be reduced after a stop
request has been issued.
S Safe standstill (SH)
The drive pulses are suppressed, allowing the energy feed to be safely and
electronically disconnected.
S Safe operating stop (SBH)
Monitors the drives during standstill (to ensure that they remain stationary).
The drives remain fully functional in closed--loop control.
S Safely reduced speed (SG) including override
Configured speed limits are monitored, e.g. when setting--up without using an
agreement button.
S Safe speed range identification "n<n
This is used to detect the velocity range of a drive in a safety--related fashion.
S Safe software limit switches (SE)
Variable traversing range limits
S Safety software cams and safety cam track (SN)
Range detection
S Safety- -relevant input/output signals (SGE/SGA)
Interface to the process
S Safety- -related communication via standard bus
Distributed I/Os for process and safety signals are connected via PROFIBUS
and PROFINET using the PROFIsafe profile.
S Safety CPU- -CPU communication
Safety--relevant communication between safety--relevant controls to implement
hierarchic systems, e.g. transfer lines.
S Safe programmable logic (SPL)
All of the safe signals and internal logic are directly connected.
S Safe brake management (SBM)
Safety--related two--channel brake control (SBC) and cyclic brake test (SBT).
S Integrated acceptance test
Partially automated acceptance test for all safety--related functions. Simple ope-
ration of the test process, automatic configuration of trace functions and auto-
matic generation of an acceptance record.
© Siemens AG 2015 All Rights Reserved
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
2.2 Safety technology integrated in the system
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Brief description
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