Siemens SINAMICS Series Operating Instructions Manual page 669

10.37.3 Memory load through DCC
Along with the CPU time load, the memory load of the processor must also be considered
when designing a closed-loop control with the DCC technology option. A higher number of
configured DCC blocks and @parameters also more highly loads the internal memory
(ROM) of the CUD.
For using DCC, on the SINAMICS DCM, as compared with the maximum possible
configurations documented in the "Maximum configuration" chapter, depending on the size
of the diagram, one must omit optional components. The number of blocks and the
@parameters are decisive.
For one CUD without additional options, the following rules apply.
Table 10- 84 Maximum number of DCC blocks and @parameters
Drive object
CU_DC
DC_CTRL
Note
The specified maximum numbers for blocks and @parameters always apply for the entire
drive unit and should be regarded as guide values. The CUD is completely utilized with 800
DCC blocks and @parameters on the DO CU_DC or 600 DCC blocks and @parameters on
the DO DC_CTRL. Conserving @parameters has little effect on the quantity structure of the
blocks; the specified maximum numbers for the blocks should therefore not be exceeded.
On the DO DC_CTRL, due to the large number of drive parameters, fewer DCC blocks can
be computed than on the DO CU_DC.
In addition, the memory is loaded by optional components as follows:
Table 10- 85 Additional memory load through optional components
Component
AOP30
TM31
TM15
TM150
SMC10, SMC30
CBE20
The final limits are determined by the total memory available on the CUD. If the previously-
mentioned recommended maximum limits are exceeded, this can result in errors during
upload or download (e.g. fault F1105: CU memory insufficient) and the drive can no longer
be switched on; POWER OFF/ON must be performed on the drive unit.
SINAMICS DCM DC Converter
Operating Instructions, 12/2018, A5E34763375A
Number of DCC blocks and @parameters
800
600
Additional memory load
(expressed in DCC blocks)
- 200 blocks
- 150 blocks
- 150 blocks
- 150 blocks
- 25 blocks
- 25 blocks
Descriptions of functions
10.37 Drive Control Chart (DCC)
667