Selecting/De-Selecting Safely Reduced Speed - Siemens SINUMERIK 840D sl Function Manual

Safety Functions Integrated in the System/Drive
6.5 Safely-reduced speed (SG)
6.5.2

Selecting/de-selecting safely reduced speed

Selecting SG
The following SGEs are used to select SG:
Table 6-11
SBH/SG
de-selection
= 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 Section 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 defi-
ned for individual machine types in the C Standards (product standards). The ma-
chinery construction OEM 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:
6-138
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 03.2006 Edition
Selecting/de-selecting SG
SGE
SBH Meaning
Deselection
x SBH and SG are de-selected
= 0 SBH is selected
(see Section 6.2, "Safe operating stop (SBH)"
= 1 SG is selected
© Siemens AG, 2006. All rights reserved
03.06