Functions
2.49 Auxiliary Functions
SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
329
2.49 Auxiliary Functions
The general functions of the device are described in chapter "Additional Functions".
2.49.1 Processing of Annunciation
After occurrence of a system fault, data on the device response and the measured quantities are significant for
analysis purposes. For this purpose, the device provides annunciations processing which operates in a three-
fold manner:
2.49.1.1 Functional Description
Displays and Binary Outputs (output relays)
Important events and statuses are displayed using front panel LEDs. The relay also contains output relays for
remote signaling. Most indications and displays can be configured differently to the delivery default settings.
The SIPROTEC 4 System Description /1/ gives a detailed description of the configuration procedure. The allo-
cation settings on delivery are listed in the Appendix of this manual.
The output relays and the LEDs may be operated in a latched or unlatched mode (each may be individually set).
The latched conditions are protected against loss of the auxiliary voltage. They are reset
• Locally by pressing the LED key on the relay,
• Remotely using a binary input configured for that purpose,
• Using one of the serial interfaces,
• Automatically at the beginning of a new pickup (please observe the LED minimum hold time, see Section
2.2)).
Status messages should not be stored. Also, they cannot be reset until the criterion to be reported is remedied.
This applies to indications from monitoring functions or similar.
A green LED displays operational readiness of the relay („RUN“), and cannot be reset. It goes out if the self-
check feature of the microprocessor recognizes an abnormal occurrence, or if the auxiliary voltage fails.
When auxiliary voltage is present, but the relay has an internal malfunction, then the red LED („ERROR“) lights
up and the relay is blocked.
Information on the Integrated Display (LCD) or to a Personal Computer
Events and states can be obtained from the LCD on the front plate of the device. A personal computer can be
connected to the front interface or the service interface for retrieval of information.
In the quiescent condition, as long as no system fault is present, the display panel can display selected oper-
ating information (overview of operating measurement values). In the event of a system fault, fault information,
so-called spontaneous display indications, appear instead. After the fault indications have been acknowledged,
the quiescent data are shown again. Acknowledgement can be performed by pressing the LED buttons on the
front panel (see above).
The device is equipped with several event buffers, for operational messages, circuit breaker statistics, etc.,
which are protected against loss of the auxiliary voltage by a buffer battery. These messages can be retrieved,
at any time, using the operating keypad in the display field, or transferred to a personal computer, using the
serial operating interface. Readout of indications during operation is described in detail in the SIPROTEC 4
System Description /1/.
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