Flottweg TRICANTER Z 8E, Operating Instructions Manual

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Flottweg
Flottweg-SIMP-CONTROL®
Controller parameters (Xp, Tn, Tv):
The controller parameters Xp, Tn and Tv define the transient response characteristic of
the controller, i.e. how intensely and how quickly the controller responds to a torque
change.
Proportional range (Xp):
The proportional range Xp (P portion) is a reciprocal of the controller gain.
This parameter defines how intensely the controller responds to a torque change.
A high Xp value causes a weak response by the controller.
According to our experience, an Xp value of 20% ensures a stable operation of the
automatic control, therefore optimisation can be started with this setting.
Reset time (Tn):
The reset time Tn (I portion) defines how quickly the controller responds to a torque
change.
A high Tn value causes a slow response by the controller.
According to our experience, a Tn value of 80 s ensures a stable operation of the
automatic control, therefore optimisation can be started with this setting.
Derivative time (Tv):
Via derivative time Tv (D portion), it is possible to set a very quick response by the
controller.
According to our experience, the torque changes relatively slowly which means that
a long derivative time is not necessary, therefore always set the Tv value to 1s.
Optimisation of the controller parameters:
Problem: Cause: Remedy:
Controller oscillates, i.e.
the torque oscillates
regularly Controller intervenes
too much 1st step: increase Xp if
required
2nd step: increase Tn
Torque changes are not
sufficiently controlled Controller intervenes
too little 1st step: reduce Xp if
required
2nd step: reduce Tn
Note:
When changing the parameters (Xp) or (Tn), first double or halve the value until a
clear reaction can be noticed.
Then optimise setting in small steps.
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