Lenze E94A - Manual (Page 500)

5 Function blocks
5.132 L_SdProcessController - PID controller with limitation
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Lenze · 9400 function library · Reference manual · DMS 6.7 EN · 08/2014 · TD05
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5.132.1 Controller characteristic
The PID controller dynamics is parameterised according to the V
p
gain, the T
n
reset time, and the T
d
rate time.
• In the Lenze setting, the function block operates as a PI controller and the D component is deac-
tivated.
Gain (P component)
The controller gain is set in C04378.
• Setting "0.0000" resets the controller.
• The controller gain can be adapted via the dnGainAdapt_n input and a parameterisable charac-
teristic function.  Adaptation of the controller gain via characteristic function ( 501)
Reset time (I component)
The reset time is set in C04379.
• Setting "1000.000 s" deactivates the I component.
• By setting the bLoadIntValue input to TRUE, the I component of the controller can be set to the
value applied to the dnIntValue_n input.
Rate time (D component)
The rate time is set in C04380.
• Setting "0.000 s" deactivates the D component (Lenze setting). The PID controller thus becomes
a PI controller or P controller if the I component is deactivated as well.