MR ECOTAP VPD CONTROL PRO Operating Instructions Manual page 79

8 Operation
Maschinenfabrik Reinhausen GmbH 2018
Behavior with delay times T1 and T2
Delay time T2 can be used to correct major control deviations more quickly.
Ensure that you set a lower value in the "Delay time T2" parameter than in
the "Delay time T1" parameter.
If the measured voltage U
period , a control impulse is output to the motor-drive unit after the set de-
lay time T1 . If the measured voltage U
delay time T2 starts once delay time T1 is complete. Once delay time T2
is complete, a control impulse is again output to the motor-drive unit for the
tap change to return to the tolerance bandwidth.
Figure 59: Behavior of the regulation function with delay times T1 and T2
1 + B %: Upper limit
2 U : Desired value
desired
3 - B %: Lower limit
A U is outside the bandwidth. De-
actual
lay time T1 starts.
C Delay time T2 complete. Tap
change triggered.
Setting delay time T2
To set the delay time T2 proceed as follows:
1. Go to Settings > Parameters > Control > Delay time T2.
2. Set delay time T2.
3. Press the Accept button to save the modified parameter.
5252433/02 EN
deviates from the set bandwidth for a long
actual
is still outside the bandwidth,
actual
4 Set delay times T1 and T2.
5 U : Measured voltage
actual
6 B%: Tolerance bandwidth
B Delay time T1 complete. Tap
change triggered.
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ECOTAP
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VPD CONTROL PRO 79