Installation and Commissioning
8-44 7SA6 Manual
C53000-G1176-C133-1
with an appropriately marked switching area. By double-clicking in an area,
components within the associated group can be turned on or off.
In the 6W DWXV column, the present (physical) state of the hardware component is
displayed. The binary inputs and outputs are indicated by the symbol of an open or
closed switch symbol, the LEDs by the symbol of a dark or illuminated LED symbol.
The possible intended condition of a hardware component is indicated with clear text
under the 6FKHGXOH column, which is next to the 6WDWXV column. The intended
condition offered for a component is always the opposite of the present state.
The right-most column indicates the commands or messages that are configured
(masked) to the hardware components.
Changing the
Hardware
Conditions
To change the condition of a hardware component, click on the associated switching
field in the 6FKHGXOH column.
Password No. 6 for Hardware Test (if activated during configuration) will be requested
before the first hardware modification is allowed. After entry of the correct password a
condition change will be executed.
Further condition changes remain possible while the dialog box is open.
Test of the Binary
Outputs
Each individual output relay can be energized allowing a check of the wiring between
the output relay of the 7SA6 and the plant, without having to generate the message
that is assigned to the relay. As soon as the first change of state for any one of the
output relays is initiated,
all
output relays are separated from the internal device
functions, and can only be operated by the hardware test function. This implies that a
switching signal to an output relay from e.g. a protection function or control command
cannot be executed.
q
Ensured that the switching of the output relay can be executed without danger (see
above under DANGER!).
q
Each output relay must be tested via the corresponding 6FKHGXOH–column in the
dialog box.
q
The test sequence must be terminated (refer to margin heading “Ending the
Procedure”), to avoid the initiation of inadvertent switching operations by further
tests.
Test of the Binary
Inputs
To test the wiring between the plant and the binary inputs of the 7SA6 the condition in
the plant which initiates the binary input must be generated and the response of the
device checked.
To do this, the dialogue box +DUGZDUH7HVW must again be opened to view the
physical state of the binary inputs. The password is not yet required.
q
Each state in the plant which causes a binary input to pick up must be generated.
Note:
As soon as the first condition change of a hardware component is initiated under the
Hardware Test, then all components in that group (BI, REL or LED) are separated from
substation, or device-side, functionality. This means, for example, that external
signals to binary inputs would be ignored by the device if their status conditions
change and the test procedure had not been closed.
Local control is re-established when the dialog box is closed.
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