Siemens SINAMICS DCM Operating Instructions Manual page 624

Descriptions of functions
10.33 CPU time load with SINAMICS DCM
Component
Calculating the thyristor blocking voltage
Is supported by the CCP
Memory card inserted
Technology controller
Free function blocks
DCC
Note
The additional CPU time load listed above for TM15, TM31 and TM150 apply for a sampling
time of 4 ms (p4099 = 4000). Setting faster sampling rates in the TM modules increases the
CPU time load in the SINAMICS DCM to values considerably higher than those stated
previously.
Note
The stated computing rules are to be understood as support during configuring and
commissioning. The theoretical CPU time load computed from these rules can deviate from
the CPU time load actually measured on the r9976[1] by several percentage points.
622
Additional CPU time load
+4.5%
+3.5%
+1%
+1.5%
Depending on the number of free function blocks
being used and their runtime groups, see Chapter
"Free function blocks (Page 625)"
Depending on the number of DCC blocks being
used and their runtime groups, see Chapter
"Drive Control Chart (DCC) (Page 627)"
SINAMICS DCM Control Module
Operating Instructions, 12/2018, A5E34888669A