Control During Operation
7-51
7SA6 Manual
C53000-G1176-C156-2
7.4.2
Manual Overwriting
When using the Control with Feedback feature, the device checks the feedback in-
dications (i.e. 52-a and 52-b) before and after a control command is issued. If for some
reason, the physical connection from a circuit breaker auxiliary contact to the binary
inputs of the device is broken, inadvertently shorted, or disconnected, commands may
be blocked. If this situation occurs, and the affected switching device is to be operated,
the desired device position indication can be simulated through “manual overwriting”
(Input Tagging). The entered device position indication in the 7SA6 can be used to
simulate and check interlocking conditions.
To accomplish manual overwriting in the 7SA6 the binary inputs of the affected device
must be decoupled first. This decoupling of the system is accomplished by setting the
respective status. The decoupling is discussed in Sub-section 7.4.3.
From the
DeviceFront
To enter the desired position indication for a switching device:
With a 7SA6 ready for operation, first press the
key. The
MAIN MENU
appears.
Using the
key, select the menu item
Control
and go to the control functions with
the
key. The selection
CONTROL
appears.
By pressing the
key, the
BREAKER/SWITCH
sub-menu is entered (see Figure 7-
52).
Select the item
Man. Overwrite
using the
key
,
and move to the next selection
using the
key.
MAN. OVERWRITE
appears, as shown in Figure 7-52.
The actual position of each switching device is displayed. Move to the desired switch
using the
and
keys.
Figure 7-52
Manual Overwriting for Switching Devices from the Front Pane
l
Enter Password No. 2 (for unlocked switching) and acknowledge with the
key.
By pressing the
key, a selection window is opened for the marked switch, in
which manual overwriting can be done with the options
OPEN/CLOSE
. See Figure 7-
53.
Make the selection using the
and
keys, and confirm with the
key.
Figure 7-53
Selection Window for Manual Overwriting of a Switch Position, Front Panel
MENU
BREAKER/SWITCH 03/04
---------------------
Display —> 1
Control –> 2
>
Man. Overwrite –> 3
Set status —> 4
MAN. OVERWRITE 01/03
--------------------
52Breaker
>
OPEN
Disc.Swit. CLOS
GndSwit. OPEN
ENTER
ENTER
ENTER
MAN. O
01/03
------
>
OPEN -------
>52Bre
CLOS
>
OPEN
>Disc.
CLOS
Содержание siprotec 7SA6
Страница 2: ...Siemens Aktiengesellschaft Book No C53000 G1176 C156 2 ...
Страница 18: ...xviii 7SA6 Manual C53000 G1176 C156 2 ...
Страница 32: ...Introduction 1 14 7SA6 Manual C53000 G1176 C156 2 ...
Страница 82: ...Hardware and Connections 2 50 7SA6 Manual C53000 G1176 C156 2 ...
Страница 119: ...SIPROTEC 4 Devices 4 25 7SA6 Manual C53000 G1176 C156 2 Figure 4 20 CFC Logic example ...
Страница 190: ...Configuration 5 62 7SA6 Manual C53000 G1176 C156 2 ...
Страница 559: ...Control During Operation 7 45 7SA6 Manual C53000 G1176 C156 2 Figure 7 45 Circuit breaker trip test in DIGSI 4 ...
Страница 652: ...Installation and Commissioning 8 78 7SA6 Manual C53000 G1176 C156 2 ...
Страница 724: ...Technical Data 10 56 7SA6 Manual C53000 G1176 C156 ...
Страница 800: ...Appendix A 76 7SA6 Manual C53000 G1176 C156 2 ...
Страница 866: ...Appendix B 66 7SA6 Manual C53000 G1176 C156 2 ...