Override For Safely Reduced Speed - Siemens Sinumerik 840D sl Function Manual

Sinumerik safety integrated

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Override for safely reduced speed

General information

16 SG override stages for the limit values of safely reduced speeds 2 and 4 can be

entered using SGEs. This means that the limit values for SG2 and SG4 can be

more finely graduated.

Using the following machine data, an override stage can be assigned factors of

between 1 and 100%:

for 840D sl:

MD36932 $MA_SAFE_VELO_OVR_FACTOR[n]

for SINAMICS S120:

p9532[0...15] SI Motion SLS (SG) override factor (Control Unit)

Application example

For grinding applications, the limit value for the safely reduced speed can be

adjusted to the variations in the grinding wheel peripheral speed using the SG

The following prerequisites must be fulfilled before the function can be used:

S Function enable via MD36901 / parameter p9501

$MA_SAFE_FUNCTION_ENABLE, bit 5 / SI Motion enable, safety functions,

S The SBH/SG function is enabled via MD36901/parameter p9501:

$MA_SAFE_FUNCTION_ENABLE, bit 0 / SI Motion enable, safety functions

(Control Unit), bit 0

S The required SGEs "SG override selection bits 3, 2, 1, 0" have either been

completely or partially configured

S The SG override factors in the corresponding MD36932 / parameter p9532

have been entered: $MA_SAFE_VELO_OVR_FACTOR[n] / p9532[0...15] SI

Motion SLS (SG) overridefaktor (Control Unit)

S Safely reduced speed 2 or 4 has been activated

Changing- -over an SG override

SG override values are changed--over subject to the same conditions as those that

apply to speed limit values.

SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition

Safety functions integrated in the system/drive

6.5 Safely reduced speed (SG)

Sinamics s120