7 Functions and settings
Maschinenfabrik Reinhausen 2014
67
222/08 EN
TAPCON® 240
If the measured voltage U
actual
deviates from the set bandwidth for a long
period
, a control impulse is output to the motor-drive unit after the set de-
lay time T1
. If the measured voltage U
actual
is still outside the bandwidth,
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 41: Behavior of the regulation function with delay times T1 and T2
1
+ B %: Upper limit
4
Set delay times T1 and T2.
2
U
desired
: Desired value
5
U
actual
: Measured voltage
3
- B %: Lower limit
6
B%: Tolerance bandwidth
A
U
actual
is outside the band-
width. Delay time T1 starts.
B
Delay time T1 complete. Tap
change triggered.
C
Delay time T2 complete. Tap
change triggered.
The following sections describe how to set the relevant control parameters.
Setting desired value 1...3
You can use this parameter to set up to 3 desired voltage values U
Ref
. The
desired voltage value is specified as a fixed value. The desired value
1
is the
default desired value. Desired values 2 and 3 are activated if there is a con-
tinuous signal at factory-preset control inputs IO-X1:31 or IO-X1:33 provided
you have programmed these previously. If there is a signal at several control
inputs at the same time, desired value 2 is activated.
7.4.1