Siemens SIPROTEC 7SJ62 Instruction Manual page 31

7SJ62 Manual
C53000-G1140-C121-1
Referring to the operating and display elements in Figure 2-1:
1. Display (LCD)
The LCD shows processing and device information as text in various lists. Com-
monly displayed information includes measured values (metering), counter values,
binary information regarding the condition of circuit breakers, status of the device,
protection information, general reports, and alarms.
2. Navigation Keys
These keys serve for navigation through operating menus.
3. MENU Key
This key activates the main menu.
4. ESC and ENTER Keys
These keys serve to escape from specific menues or execute changes (such as
setting changes).
5. Numerical Keys
These keys serve for entry of numerical values, such as protective settings.
6. Function Keys
Four function keys allow the quick and simple execution of frequently used actions.
Typical applications include, for example, jumping to a particular position in the
menu tree such as the fault data in the Trip Log (F1) or the metering values (F2).
The function keys are programmable, and may be used to execute control func-
tions such as closing (F3) or tripping (F4) circuit breakers. Next to the keypad, a
labeling strip is provided on which the user-specified key functions may be written.
7. Serial Communication Interface, 9-pin Female D-subminiature connector
This serial interface is for the connection of a local PC running DIGSI
8. LED Key
This key has the dual purpose of resetting latched LEDs and the latched contacts
of binary outputs, as well as testing all of the LEDs.
9. LEDs
The function of these indicators can be programmed. There is a vast selection of
signals from which to choose. Some examples are protective element status, relat-
ed to specific protective elements, processing or control information, and binary in-
put or output status. Next to the LEDs on the front panel, a labeling strip is provided
on which the user-specified LED functions may be written.
10.Operating Condition Indicators
The two LEDs "RUN" (green) and "ERROR" (red) indicate the operating condition
of the device.
11.Coverings for the screws that secure the front panel.
Hardware and Connections
®
4.
2-3