MR TAPCON 250 - Page 142

9 Operation
Maschinenfabrik Reinhausen GmbH 2022142 8595028/00 ENTAPCON
®
250
The following requirements must be noted to set delay time T2:
▪ The delay time T2 must be greater than the switching pulse time.
▪ The delay time T2 must be greater than the maximum operating time of
the motor-drive unit.
▪ The delay time T2 must be less than the value set for delay time T1.
Behavior with delay times
T1 and T2
If the control variable deviates from the set bandwidth for a long period
, a control impulse is output to the motor-drive unit after the set delay time
T1 . If the control variable is still outside the bandwidth, delay time T2
starts to count down. Once delay time T2 is complete, a control impulse is
again issued to the motor-drive unit for the tap change to return to the tol-
erance bandwidth.
Figure72: Behavior of the regulation function with delay times T1 and T2
1 Upper limit of bandwidth 4 Set delay times T1 and T2.
2 Desired value 5 Control variable measured value
3 Lower limit of bandwidth 6 Bandwidth range
A Control variable is outside of the
bandwidth. Delay time T1 starts.
B Delay time T1 complete. Tap
change triggered.
C Delay time T2 complete. Tap
change triggered.