UNIFREM v.3.41x
10 May 2017
Page 100 from 180
SPECIAL SETTING PC
Group of parameters number [196]
Special setting of the process controller signals.
MENU \ SETTINGS \ FUNCTIONS \ PROCESS CONTROLLER \ SPECIAL SETTING PC
Name [ID]
Description
Def.
Setpoint signal
[419]
Selection of the parameter that represents the setpoint value of the process controller.
The value is applied if the parameter Source of PC setpoint [130] (page 98) is set to
"Special".
-
Signal
Selected parameter is automatically recalculated to the range of regulation of the process
controller.
Feedback
signal [408]
Selection of the parameter that represents the feedback value of the process controller. -
Signal
Selected parameter is automatically recalculated to the given range.
7.7.4 OPTIMIZATION
Group of parameters number [65]
Setting the parameters for the optimization block that is used to search for the extremum of any signal using
the change of a selected setpoint signal, which are connected to optimization output OPT Output [423]
(page 22).
Optimization searches for an output value, at which it reaches the criteria of the selected signal. If the
measuring conditions Opt. meas. signal [279] (page 102) and the operation condition Opt. reset signal [263]
(page 101) during the optimization are met, new output samples are calculated in defined intervals
Optimization step [742] (page 22). The found global extremum is saved to the memory.
START. POINT OPT
Group of parameters number [711]
Defines the initial conditions (starting point) of the optimization, when the scanning is turned off.
MENU \ SETTINGS \ FUNCTIONS \ OPTIMIZATION \ START. POINT OPT
Name [ID]
Description
Def.
Start. Point
OPT [710]
Defines the starting value of the optimization output, when the scanning is turned
off.
0,5000
0,0000
÷
1,0000
If the OPTSP source Start. point source [712] (page 100) is not selected, this fixed value will
be used.
Start. point
source [712]
Selection of a signal that can be used as an optimization starting point, when the
starting point storing condition is met.
-
Signal
Start. point
condition
[713]
Signal that is evaluated, if a starting point from the selected signal should be set or
not.
[709] OPT
State
Signal
For example, parameter Status word negated [547] (page 24) is selected and in OPTSP
active [714] (page 100) "Run" is selected, the starting value from Start. point source [712]
(page 100) will be stored, when the converter is not in START mode. When in START, the last
saved starting value is kept.
OPTSP
active [714]
Conditions for activation of starting point of optimization.
Measuring
Look choises of parameter's OPT State [709] (page 22)
OPTSP
inactive
[715]
OPTSP inactive: In case of a numeric signal if the signal value is lower than the
defined level.
Look choises of parameter's OPT State [709] (page 22)
Opt. signal
[80]
Selection of a parameter, whose value should be optimized according to the
criteria Opt. criteria [208] (page 100).
-
Signal
Most often, the optimization signal is selected as Produced or Consumed converter load
(MPPT algorithm - maximum power point tracking). Optimized signal can be externally
supplied via the analog inputs or derived from any other diagnostic quantity of the frequency
converter.
Opt. criteria
Setting the optimization criteria.
Signal min.
