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Application Manual CDA3000
5 Software functions
5.2.6 _28 RS-Refe-
rence structure
Note: This section is intended only for users who are unable to find
their drive solution, or any suggested solution, in the preset
application data sets.
Function Effect
• By way of the reference
structure the two reference
channels are added
together. Each channel can
draw a reference source
from a predefined selection.
• The reference structure is
adjusted to the application by
the assistance parameters
such that no adaptation is
required for most applica-
tions.
• For special requirements, the
internal processing of the ref-
erence value can be adapted
by way of the flexible refer-
ence structure.
Explanatory notes to Figure 5.14
1. Reference channels: Reference selectors (B) RSSL1 and RSSL2
switch a reference source (A) onto the reference channel. The
selectors can additionally be switched by digital inputs.
After reference channel 1 has been influenced by parameter RF1FA
(0 ... 100%) reference channel 2 is added to it. The sum of the two
channels can then also be inverted.
At various points within the reference structure the current reference
value can be observed by means of parameters REF1 to REF6.
2. Driving profile generator: The driving profile generator consists of
a ramp generator and a smoothing generator (F and G). The ramp
generator can switch in operation between different ramp steep-
nesses from the two characteristic data sets (651-CDSSL).
Simultaneously setting inputs STR and STL presets the reference
0 Hz for the ramp generator (see also sections 5.2.7 “_26 CL-Con-
trol location” and 5.5.3 “_59 DP-Driving profile generator”).
3. Driving sets: Thedrivingsetsareactivatedbysettingoneofthe
reference selectors to FFTB. The ramps TACR0...7 or TDCR0 ... 7
as appropriate are used (see also section 5.5.5 “_60 TB-Driving
sets”).
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