3. Parameterize 4 evaluation factors for defining the setpoint limits
MD36933 $MA_SAFE_DES_VELO_LIMIT includes 4 values (indices 0…3). Using the axis-
specific PLC user interface, in the PLC program you can select which of these values is
active (DBX34.0…DBX34.1 in axis1 [DB31]…axis31[DB61]).
Bit 0
Bit 1
active setpoint limiting factor
= 0
= 0
SAFE_DES_VELO_LIMIT[0]
= 1
= 0
SAFE_DES_VELO_LIMIT[1]
= 1
= 1
SAFE_DES_VELO_LIMIT[2]
= 1
= 1
SAFE_DES_VELO_LIMIT[3]
Select the active setpoint limiting factor using DBX34.0..DBX34.1 in axis1 [DB31]…axis31[DB61]
4. Enter the 4 required evaluation factors.
To optimally set this MD, it is possible that several changes must be made in order to take
into account the dynamic response of the drives.
You can use 80% as recommended value, for example.
5. Reset the operator panel.
Result
The evaluation factors of the NC were parameterized, and are active after the operator panel
is reset.
During the runtime, the setpoint speed limiting of the drive (p9533) is evaluated with the
selected (in the PLC user program) evaluation factor of the NC, and issued to the interpolator
as setpoint limit.
The value in MD36933[0] becomes active if a specific value is not selected in the PLC user
program.
Commissioning and configuring
6.5 Configuring NC and drive-specific safety settings
Safety Integrated (with SINAMICS S120)
Commissioning Manual, 02/2020, A5E46305916B AB
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