19 function library – Lenze 8400 TopLine User Manual
Page 1608
19
Function library
19.1
Function blocks
1608
Lenze · 8400 TopLine · Reference manual · DMS 6.0 EN · 06/2014 · TD05/TD14
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Root function
• Lenze setting: "0: Off"
0
Off
The actual value at nAct_a is not
changed for further processing.
1
On
The square root of the actual value at
nAct_a is taken for further
processing.
Operating mode
• Lenze setting: "0: Off"
0 Off
The input setpoint nNSet_a is output
without any changes at the output
nOut_a.
1 nNSet + nNSet_PID
nNSet_a and nAct_a are used as PID
input values. The arriving nNSet_a is
additively linked to the value output
by the PID element.
2 nSet_PID
nSet_a and nAct_a are used as PID
input values. The input nNSet_a is
not considered.
3 nNSet_PID
nNSet_a and nAct_a are used as PID
input values. The input nSet_a is not
considered.
4 nNSet + nSet_PID
nSet_a and nAct_a are used as PID
input values. The arriving nNSet_a
setpoint is additively linked to the
value output by the PID element.
5 nNSet || nSet_PID
nSet_a and nAct_a are used as PID
input values. The setpoint nNSet_a is
output at the output nOut_a . The
PID output value is output at the
output nPIDOut_a.
0.000
s
999.999 Influence acceleration time
• Acceleration time T
ir
for the
influencing factor.
• Lenze setting: 5.000 s
0.000
s
999.999 Influence deceleration time
• Deceleration time T
if
for the
influencing factor.
• Lenze setting: 5.000 s
-199.99
%
+199.99 Display of PID output value
nPIDOut_a
-199.99
%
+199.99 Display of the internal PID input
value nAct_a
0
%
100 Window for comparison function
"Actual value = setpoint"
• Lenze setting: 2 %
• Hysteresis: 1 % (fixed)
Parameter
Possible settings
Info