Functions
2.42 Monitoring Functions
SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
291
2.42.2.2 Malfunction Responses of the Monitoring Functions
Depending on the type of malfunction detected, an indication is sent, a restart of the processor system initiated,
or the device is taken out of service. After three unsuccessful restart attempts, the device is also taken out of
service. The operational readiness NC contact operates to indicate the device is malfunctioning. Also, the red
LED "ERROR" lights up on the front cover, if the internal auxiliary voltage is present, and the green "RUN" LED
goes out. If the internal auxiliary voltage fails as well, then all LEDs are dark. The following table summarises
the monitoring functions and the malfunction responses of the device.
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