Cpu Time Load With Sinamics Dcm - Siemens SINAMICS DCM Operating Instructions Manual

Descriptions of functions

10.29 CPU time load with SINAMICS DCM

10.29 CPU time load with SINAMICS DCM
The CPU time load of the SINAMICS DCM can be read out at r9976. Principally, the
following rules apply:
1. The cyclic DC closed loop control of the SINAMICS DCM generates a base load of
2. The use of peripherals (AOP30, Starter, TM15, TM31, SCM30, CBE20,...), certain
3. The CPU time load must not exceed a utilization of 100% at r9976.
The CPU time load must be taken into consideration when configuring and commissioning
the SINAMICS DCM.
Table 10- 35 Additional CPU time load through optional components
Component
AOP30 via PPI
1 TM31
2 TM31
3 TM31
1 TM15
2 TM15
3 TM15
1 SMC30
1 CBE20
Internal encoder (p50083=2)
Parallel interface
Peer-to-peer
Thyristor blocking voltage calculation
Is supported by the CCP
Memory Card inserted
460
approx. 70 % (can be read on r9976).
settings in the closed loop control and/or use of the free function blocks along with the
DCC technology option increases this base load. The additional CPU time load through
the main components is summarized in the table below.
WARNING
At a CPU time load of >100 % on r9976[1], the correct functioning of the drive is no
longer ensured.
Note
When the time load of the CUD is too high (r9976 >100 %) fault F01205 is output (time
slice overflow). In such a case, the drive needs to be switched off and then back on again
(POWER OFF / POWER ON).
Additional CPU time load
+4 %
+4 %
+5 %
+6 %
+1 %
+1.5 %
+2 %
+2 %
+1 %
+2 %
+4 %
+4 %
+3 %
+3.5 %
+1 %
SINAMICS DCM Control Module
Operating Instructions, 06.2010, C98130-A7067-A1-02-7619