8.3.2 Calculation of Performance Profile
P
DC_cont
Rated DC bus power (see Technical Data - DC Bus)
P
DC_max
,
P
DC_cont
Maximum allowed DC bus power (see Technical Data - DC Bus)
P
DC_base
Base load
P
DC_peak
Peak load
t Duration of peak load
T Cycle time
W
Cyc
Energy cyclically drawn from DC bus
Fig.8-2: Performance Profile in DC Bus
1. Make an overall profile which shows the added individual profiles.
The peak load P
DC_peak
in the overall profile may at no time exceed the
given data P
DC_max
.
2. From the profile data of the individual axes, determine the energy cycli‐
cally drawn from the DC bus
3. Add the determined values W
Cyc
and compare the result with the al‐
lowed value W
Cyc_max
The determined energy sum W
Cyc_max
mustn't be exceeded for in‐
dividual processes either.
4. Determine the DC bus continuous power P
ZWD
, it mustn't exceed
P
DC_cont
.
DOK-INDRV*-HCQ-T+HMQ-T-PR03-EN-P
Rexroth IndraDrive Drive Controllers HCQ, HCT
Bosch Rexroth AG 93/145
Notes on Project Planning
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