GMC-I Messtechnik GmbH
R2700–41
Correction with manipulating factor limiting
Y H
positive:
Pb I
multiplied by 100 %
/
Y H
Y H
negative:
Pb II
multiplied by -100%
/
Y H
Correction for step-action controllers in the event that T
I
or T
II
is smaller than
tY
:
t Y
t Y
t Y
t Y
Pb I
multiplied by
, if T
I
is smaller, or by
, if T
II
is smaller.
T
I
T
I
T
II
T
II
The value for
tu
is very inaccurate in this case. It should be optimized in the closed loop control mode.
Closed Loop Control Mode
The closed loop control mode is started after self-tuning has been completed:
– Configure the desired control algorithm with
controller type
(
Cout
).
– Adjust the
setpoint
to the required value.
– For 3-step, split range and step-action controllers, the dead band can be increased from
dbnd
= 0, if control of the switching outputs (or continuous
output) changes too rapidly, for example due to an unsteady actual value.
Summary of Contents for R2700
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