7 Operation
Maschinenfabrik Reinhausen GmbH 2021
81
8209941/00 EN
ECOTAP
®
VPD
®
III 30D-24 / MD&C
6. Press
to confirm the selection.
7. Press
to save the setting.
7.4.3 Blocking function (P5)
The control unit is equipped with a blocking contact. You can use this to con-
nect a door contact switch or a temperature sensor, for example. If you
would like to use a temperature sensor, the temperature sensor must make
a signal in the form of a floating contact available. Observe the supplied con-
nection diagram and section "Connecting the control unit at the installation
site" [
Section 6.3.3, Page 57] for this.
You can use the blocking function (P5) parameter to set the device's re-
sponse if a blocking contact is closed:
▪ 0 = inactive: The status of the blocking contact does not affect the behav-
ior of the device. Use this setting if you have not connected a door contact
switch or temperature sensor to the device.
▪ 1 = active AUTO/EXTERNAL: If the blocking contact is closed, all switch-
ing operations in the operating modes AVR AUTO and EXTERNAL CON-
TROL are blocked by the device. Manual switching operations can still be
performed in the AVR MANUAL operating mode.
▪ 2 = active MANUAL/AUTO/EXTERNAL: If the blocking contact is closed,
all switching operations in all operating modes (AVR MANUAL, AVR
AUTO, and EXTERNAL CONTROL) are blocked by the device.
The
LED lights up if blocking is active.
To set the blocking function, proceed as follows:
ü
The AVR MANUAL operating mode is active.
1. Press
>
until the desired parameter is displayed.
ð
2. Press
to confirm the selection.
3. Press
or
to select the desired option.
4. Press
to confirm the selection.
5. Press
to save the setting.
7.4.4 Target position for loss of voltage (P6)
The control unit is fitted with an integrated energy accumulator so that a tap-
change operation that has been started can be reliably completed even if the
voltage fails. You can also use the energy accumulator to drive the on-load
tap-changer to a defined position in the event of a voltage failure. As a re-
sult, you can achieve a defined transformer transmission ratio once the volt-
age supply returns.
Summary of Contents for ECOTAP VPD 3 30D-24
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