Siemens siprotec 7SA6 User Manual page 32

Hardware and Connections
2-4
7. 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 output relays, as well as testing all of the LEDs.
9. Light emitting diodes (LEDs)
The function of the 7 LEDs can be programmed. There is a vast selection of sig-
nals from which to choose. Some examples are device status, processing or con-
trol information, and binary input 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.
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4.
7SA6 Manual
C53000-G1176-C133-1