Siemens SIPROTEC 6MD665, Manual

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2 Functions
18
6MD665 Manual
C53000-G1876-C103-3
2.2.2.1 Description
Operation using the
SIPROTEC
®
4
device
Commands can be initiated using the keypad on the local user interface of the relay.
For this purpose, there are three independent keys located below the graphic display.
The key
&
75/
causes the control display to appear in the LCD. Control of switching
devices only is possible within the control display, since the two control keys OPEN
and CLOSE only become active as long as the control display is present. The LCD
must be changed back to the default display for other, non-control, operational modes.
The navigation keys
▲
,
▼
,
t
,
u
are used to select the desired device in the Control
Display. The
,
key or the
2
key is then pressed to convey the intended control com-
mand.
Consequently, the switch icon in the control display flashes in setpoint direction. At the
lower display edge, the user is requested to confirm his switching operation via the
(
17(5
key. Next a security check takes place. After the security check is completed,
the
(
17(5
key must be pressed again to carry out the command. If this confirmation is
not performed within one minute, the setpoint flashing changes again to the corre-
sponding actual status. Cancellation via the
(
6&
key is possible at any time before the
control command is issued.
During normal processing, the control display indicates the new actual status after the
control command was executed and the message
´FRPPDQGHQGµ
at the lower
display edge. In case of control commands with feedback, the message
´)%
UHDFKHGµ
is displayed for a short time before this.
If the selected control command is not accepted, because an interlocking condition is
not met, then an error message appears in the display. The message indicates why
the command was not accepted (see also SIPROTEC
®
4 System Description /1/). This
message must be acknowledged with Enter before any further control commands can
be issued.
Operation using the
DIGSI
®
Control devices can be controlled via the operator control interface by means of the
DIGSI
®
operating program installed on a PC.
The procedure to do so is described in the SIPROTEC
®
System Description /1/ (Con-
trol of Switchgear).
Operation using the
SCADA Interface Control of switching devices can be performed via the serial system interface and a
connection to the substation control and protection system. Please check MLFB order
number to ensure that your individual relay has a SCADA interface module that sup-
ports this. Within the device also specific settings have to be made to the serial inter-
face (see SIPROTEC
®
System Description /1/).
Note
The switching commands (annunciations) listed in the following Information List are
examples preset. As they are only examples they may be deleted or overwritten by the
user.