Malfunction Responses Of Monitoring Equipment; Description - Siemens SIPROTEC 7SC80 Series Manual

Functions
2.8 Monitoring Functions
2.8.2

Malfunction Responses of Monitoring Equipment

The malfunction responses of monitoring equipment are summarized in the following.

2.8.2.1 Description

Malfunction Responses
Depending on the type of malfunction discovered, an indication is sent, a restart of the processor system is
initiated, or the device is shut down. After three unsuccessful restart attempts, the device is also shut down.
The readiness relay opens and indicates with its NC contact that the device is malfunctioning. Moreover, the
red "ERROR" LED lights up and the green "RUN" LED goes out. If the internal auxiliary voltage also fails, all
LEDs are dark. Table 2-8 shows a summary of the monitoring functions and the malfunction responses of the
device.
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SIPROTEC, 7SC80, Manual
E50417-G1140-C486-A1, Release date 12.2011