Technical data
Safety Integrated Functions
8.5 Safety Integrated Extended Functions
Function Manual
Function Manual, 06/2012, 6SL3097-4AB10-0BP4
391
8.5.8 Safe Acceleration Monitor (SAM)
Safe Acceleration Monitor with encoder
The "Safe Acceleration Monitor" (SAM) function is used for safe monitoring of drive
acceleration. It is part of the Safety Integrated Extended functions SS1 and SS2 (or STOP B
and STOP C).
Note
For reasons of clarity, the abbreviation for this function has been changed from "SBR" to
"SAM" This change has no impact on the functionality.
Functional features
A STOP A is generated if any drive acceleration within the ramp-down phase exceeds the
tolerance defined in p9348/p9548. The monitoring function is activated after SS1 (or STOP
B) and SS2 (or STOP C) are set and is deactivated after the speed drops below the value
set in p9346/p9546.
NOTICE
If 0 is entered for p9368/p9568, the speed limit of the SSM function (p9346/p9546) is also
used as minimum limit value for the SAM function (safe acceleration monitoring). The SAM
is deactivated if the speed is below this limit.
This means the effects of safe acceleration monitoring are greatly restricted if a relatively
high SSM/SAM speed limit is set when using the SS1 and SS2 stop functions.
Note
SAM is part of the Safety Integrated Extended Functions SS1 and SS2. SAM cannot be
selected individually.
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Figure 8-11 Characteristics of the shutdown limit for SAM