Auxiliary Functions
The auxiliary functions of the 7VE61 and 7VE63 relay include:
•
Processing of Messages
•
Measurements (including acquisition of minimum and maximum values)
•
Setting of Limit Values for Measured Values and Statistic Values
•
Date and Time Management
•
Commissioning Tools
Processing of Messages
After the occurrence of a system fault, data regarding the response of the relay and the measured values are
saved for future analysis. For this purpose, the device is designed to perform message processing:
•
LED display and binary outputs (output relays)
•
Information via display field or personal computer
•
Information to a control center
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 /1/ SIPROTEC 4 System Manual gives a detailed description of the configuration procedure. The allocation
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).
Condition messages should not be latched. Also, they cannot be reset until the criterion to be reported is
remedied. This applies to messages 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 informa-
tion, so-called spontaneous display indications, appear instead. After the fault indications have been acknowl-
edged, 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
2.14
2.14.1
2.14.1.1
Functions
2.14 Auxiliary Functions
120 SIPROTEC 4, 7VE61 and 7VE63, Manual
C53000-G1176-C163-3, Edition 10.2017
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