User's Manual

Automation and Drives - SCE
T I A Training Document Page 62 of 64 Module
Parameter Data Type Value Range Default Description
CYCLE TIME >= 1 ms T#1s SAMPLE TIME. The time between block calls
has to be constant. The input "Sample time"
indicates the time between block calls.
SP_INT REAL -100.0...+100.0% 0.0 INTERNAL SETPOINT. The input "Internal
setpoint" is used to specify the setpoint.
PV_IN REAL -100.0...+100.0% 0.0 PROCESS VARIABLE IN / Actual value input.
At the input "Actual value input", a startup
value can be parameterized, or an external
actual value can be wired in the floating point
format.
PV_PER WORD W#16#0000 PROCESS VARIABLE PERIPHERy / Actual
value Periphery. The actual value in the
periphery format is wired to the controller at
the input "Actual value Periphery ".
MAN REAL -100.0...+100.0% 0.0 MANUAL VALUE. The input "Manual value" is
used to specify a manual value by means of
the operator interface function.
GAIN REAL 2.0 PROPORTIONAL GAIN /Proportional
coefficient. The input "Proportional
coefficient" indicates controller gain.
TI TIME >= CYCLE T#20s RESET TIME / Integration time. The input
"Integration time" determines the time
response of the integrator.
TD TIME >= CYCLE T#10s DERIVATIVE TIME. The input "Derivative
time" determines the time response of the
differentiator.
TM_LAG TIME >=CYCLE/2 T#2s
TIME LAG OF THE DERIVATE ACTION /
Delay of the D-component. The algorithm of
the D-component contains a delay that can be
parameterized at the input "Time lag of the
derivative action".
DEADB_W REAL >=0.0 % 0.0
DEAD BAND WIDTH. The system deviation
is taken via a dead band. The "Dead band
width" determines the size of the dead band.
Preface Fundamentals Discontinuous Action Controller Controller Block (S)FB41 Setting the System Appendix
B3
Issued: 02/2008 Control Engineering with STEP 7