Additional Function Blocks - Lenze 4800 Manual

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7.5

Additional function blocks

7.5.1 Process controller
Description
The process controller is designed as independent function block and is a PID
controller with a cycle time of 12 ms.
It can for instance be used as superimposed controller (dancer position control,
tension control, etc.).
FIG 7-26
Features
( P adaptation possible via an internal function (derived from set-value) or
( Ramp function generator in set-value channel
( Overlay of process controller output over ramp function generator
( Intregral action component to be switched-off via freely assignable digital
( Deactivation of the process controller via freely assignable digitale terminal (I
( Suppression of the process controller output via freely assignable digital
E v a l u a t i o n
S e t
A c t .
D e a c t i v a t i o n
p r o c e s s c o n t r o l l e r
I - c o m p o n e n t
s w i t c h - o f f
Process controller
external analog signal source; enable adaptation with C329 = -1-
terminal (I component = 0)
component = 0, output = 0)
terminal (output = 0 after time C335)
Configuration
O u t p u t
S u p p r e s s i o n
p r o c e s s c o n t r o l l e r
4900Str053
48XX/49XXSHB0399
7-67