Specifications

sigmadue - IEC 61131-3 Function Block Library
98
•If DTRK (Track) is active, the outputs are set according to the value of the
analog input
TRK . This signal, with range [-100.0... 100.0], drives both
OUTH and OUTC through a phase splitter. When its value is in the range
[-100.0 … 0] it means that a Cool action must be taken; therefore,
OUTH is
set to 0, while
OUTC is set to the value of TRK , with the sign inverted.
Inversely, when it is in the range [0... 100.0]
OUTC is set to 0, while OUTH
is set to TRK . Please note that the tracking value is not affected by the
DEADBAND parameter or by the output limits.
•If the
DAM input is active (and DTRK is inactive) the output OUT assumes
the value of the analog input
AM_VAL .
•If
DAUX (Aux) is active (and both DAUX and DTRK are inactive), the
outputs are set according to the value of the analog input
AUX . This signal,
with range [-100.0... 100.0], drives both
OUTH and OUTC through a phase
splitter. When its value is in the range [-100.0... 0] it means that a Cool
action must be taken; therefore,
OUTH is set to 0, while OUTC is set to the
value of
AUX , with the sign inverted. Inversely, when it is in the range
[0... 100.0]
OUTC is set to 0, while OUTH is set to AUX . These values are
valid if the
DEADBAND of the phase splitter is set to 0, otherwise they
slightly change. Please note that the
AUX value is not affected by the
output limits.
Inputs M_RES and FFWD are used to set a fixed offset to add to the PID calculation.
The system does not add boot terms but select
FFWD if it is different from -100,
elsewhere the system add
M_RES .
Automatic Tune
This function block is able to perform tuning calculation. The FB select the EZ tune
method if ATB is greater than zero, elsewhere it use the FUZZY method. To
understand how these methods work refers to the documentation of the function
blocks
S2_EZ_HC_TUNE and S2_HC_TFUZZY .