Burkert Type 8635 - Manual (Page 147)

8635 - 145
G
ENERAL
R
ULES
(A
PPENDIX
)
1
Ti
I component
Function: Y = ∫ Xd dt
Ti is the integration or floating time. It is the time that expires until the controller output has run through
the entire correcting range.
Characteristic and step resonse of the I component of a PID controller
Characteristic Step response
Control range ∆Xc
Characteristics:
A purely I controller completely eliminates the effects of disturbances. It thus has a favourable static
behaviour. Because of its finite correcting speed, it works more slowly than a P controller and tends to
oscillation. It is hence dynamically relatively unfavourable.
Floating time
Control r
a
n
g
e