Selecting/Deselecting Safely Reduced Speed - Siemens Sinumerik 840D sl Function Manual

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6.5.2

Selecting/deselecting safely reduced speed

Selecting SG
The following SGEs are used to select SG:
Table 6-11
SBH/SG
deselection
= 1
= 0
= 0
Note: x --> Any signal state
Note
The actual status of the function is displayed using the SGA "SBH/SG active" and
SGA "SBH active".
Before activating the SG function it must be ensured that the speed of the
axis/spindle is lower than the selected speed limit value. If it is higher, an alarm is
generated that causes the drive to be shut down.
The SGEs and SGAs are described in Chapter 7.1 "Safety--related input/output
signals (SGE/SGA)".
Selecting speed limit values
The maximum permissible speed of an axis/spindle in the setting--up mode is
defined for individual machine types in the C Standards (product standards). The
machine manufacturer is responsible for ensuring that the correct speed limit value
is selected depending on the operating mode and the application.
The required speed limit is selected as follows by combining the following SGEs:
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SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
Selecting/deselecting SG
SGE
SBH Meaning
deselection
x SBH and SG are deselected
= 0 SBH is selected
(see Chapter 6.2, "Safe operating stop (SBH)"
= 1 SG is selected
Safety functions integrated in the system/drive
6.5 Safely reduced speed (SG)
6-153