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ENGLISH
9.1.11 AIDES FOR SETTING
Characteristic
Control
Process
Control Mode
Start-up
Procedure
P term higher decrease of
attenuation
stronger reaction
with overshoot
faster start-up
with overshoot
P term smaller increase of
attenuation
less reaction,
less tendency to
oscillate
slower startup
Fig. 9-4 controller operation with P-term too high
Characteristic
Control
Process
Control Mode
Start-up
Procedure
I term higher decrease of
attenuation
stronger reaction
with tendency to
oscillate
faster start-up
with tendency
to oscillate
I term smaller increase of
attenuation
less reaction,
less tendency to
oscillate
slower start-up
Fig. 9-5 controller operation with I-term too high
Characteristic C o n t r o l
Process
Control Mode S t a r t - u p
Procedure
D term higher decrease of
attenuation
s t r o n g e r
reaction
slower start-up,
earlier decrease
of power
D term smaller increase of
attenuation
less reaction faster start-up,
d e c r e a s e o f
power later
Fig. 9-6 controller operation with D-term too high
